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NTP Support

382

SSU-2000 User’s Guide

12713020-002-2 Revision D – April 2004

NTP Support

The Network Time Protocol (NTP) is used to synchronize the time of a computer
client or server to another server or reference time source, such as a GPS receiver
or local timing source.

The SSU-2000 implements the NTP v.3 (RFC 1305) version. It can run as a server
application and a client application. In addition, a broadcast mode may be
implemented as either a server or client. The NTP server always runs and the client
and broadcast modes are enabled independently by assignment of addresses and
setting of timers.

Server Mode

The NTP server application always runs at port 123 (default NTP port) of the unit IP
address and responds to requests for time in the NTP format. If the unit has time set
from GPS then it indicates it is a primary time source by a 0 in the LI field and a 1 in
the STR field. It the unit has time set by the client application then it indicates it is a
secondary source by putting a 0 in the LI field and the source server STR + 1 in the
STR field.

If the unit time has not been set by one of the above then it indicates that time is not
valid by setting the LI field to 3. Once the unit time has been set by either radio or
client then LI = 0. Setting time by the keyboard sets (or leaves) LI = 3, since this is
not an accurate time setting. If the time has been set, and the unit switches to a
non-radio reference, then the STR becomes the PQL value for the selected
reference input. If the unit enters holdover mode then the STR becomes the PQL of
the selected Clock. (PQL is an internal representation of the received or assigned
SSM value of the reference. See the SSU-2000 documentation for details.)

Client Mode

If a valid time server IP other than 0.0.0.0 (default) is assigned AND a client timer
other than 0 (default) is set AND no radio time is available, then the unit will request
time from port 123 of the assigned server IP at the designated time interval (32 to
1024 seconds). Once time is set by the client mode then the server will have LI = 0
and STR = the time source STR + 1. A second server IP may be entered and the
NTP protocol will check both servers and select the best source per the NTP
specifications. An NTP response received in the client mode overrides the time set
by keyboard and changes the LI field to 0 as indicated above.

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Summary of Contents for SDU-2000

Page 1: ...SSU 2000 Synchronization Supply Unit and the SDU 2000 Synchronization Distribution Unit User Guide Revision D April 2004 Part Number 12713020 002 2 ...

Page 2: ... 95131 1017 U S A http www symmetricom com Copyright 1999 2004 Symmetricom Inc All rights reserved Printed in U S A All product names service marks trademarks and registered trademarks used in this document are the property of their respective owners ...

Page 3: ...rce PRS Configuration 28 SSU 2000 Configured as a Monitor Only System 28 System Architecture 29 Input Section 30 Output Section 33 Clock Section 33 Communications Section 33 Alarms and Events 34 System Components 36 SSU 2000 Main Shelf Chassis 36 SSU 2000 Family of Modules 42 Clock and Communications Modules 43 Input Modules 44 Output Modules 45 Configuring Redundant Output Modules 46 Input and Ou...

Page 4: ...64 Making Ground Connections 65 Power Input 66 Making Connections 66 Making I O Connections 66 Installing Output Summer Adapters 68 Making Communication Connections 69 Making Ethernet Connections 70 Local Oscillator Outputs 71 Making Alarm Connections 71 Connecting Antennas 73 Connecting an SDU 2000 Expansion Shelf 73 Connecting a Single SDU 2000 Expansion Shelf 75 Connecting Additional SDU 2000 E...

Page 5: ...es 97 Saving the Provisioning Setup 98 Checking Alarm Status 98 Overview of the SSU 2000 Security System 98 Factory Default Basic Configuration 99 Changing Factory Defaults 100 Customizing Other Configuration Options 100 Restoring Factory Defaults 101 Chapter 4 Commissioning Readiness to Test Checklist 104 SSU 2000 Commands 105 Equipment Requirements 105 Commissioning Tests 106 Testing the Etherne...

Page 6: ...Overview 124 Functional Block Diagram 125 Status LED Indicators 126 Functional Specifications 127 Stratum 3E Clock Module 128 Functional Overview 128 Functional Block Diagram 129 Status LED Indicators 130 Performance Specifications 131 Type 1 Clock Module 132 Functional Overview 132 Functional Block Diagram 133 Status LED Indicators 134 Functional Specifications 135 Communications Module 136 Funct...

Page 7: ...9 Input Wire Wrap Adapters 171 Chapter 8 Output Module Reference Data E1 Output Module 174 Functional Overview 174 Functional Block Diagram 175 Status LED Indicators 176 Performance Specifications 177 DS1 Output Module 178 Functional Overview 178 Status LED Indicators 179 Performance Specifications 180 Composite Clock Output Module 181 Composite Clock Output Module Overview 181 Functional Block Di...

Page 8: ...nts 218 Buffer Module 219 Status Indicators 219 Output Adapter Panels 220 Balun Output Adapter Panel 220 DE9 Output Adapter Panel 221 High Density Wire Wrap Output Panels 221 Adapter Accessories 222 Chapter 9 Hardware Configuration Guide Configuring a Conventional SSU TSG System 224 Configuring a Primary Reference Source PRS System 224 Configuring a Monitor Only System 225 Configuring a Subtending...

Page 9: ...e 383 SNMP Protocol 384 SNPMP v2 Details 384 SNMP v3 Details 385 Management Information Base 385 Enabling SNMP 386 Adding a User 386 Adding a Manager IP Address 387 User and Manager Tables 387 Keep Alive Support 388 Shelf Information 388 Software Information 388 Communications Module Software Version 389 Appendix C Antennas Ordering Information 392 Antenna Kits and Accessories 392 GPS Antenna with...

Page 10: ...ult Settings 424 MTIE Limits for the DS1 Input Module 425 MTIE Limits for the E1 Input Module 426 GPS Input Module Default Settings 426 Line Retiming Module Default Settings 427 DS1 and E1 Output Module Default Settings 428 2048 kHz Output Module Default Settings 429 E1 2048 kHz Output Module Default Settings 429 Composite Clock Output Module Default Settings 430 RS 422 Output Module Default Setti...

Page 11: ...ide 11 Appendix G Reference Materials American National Standards Institute ANSI Documents 448 Generic Requirements 449 Technical Advisories and Framework Technical Advisories 449 Technical References 451 EIA TIA Documents 452 Other Reference Documents 453 ...

Page 12: ...12 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 13: ...DU Interface J8 and Backup Clock J9 Connectors 74 2 9 SDU Interface J17 and J15 and Backup Clock J16 Connectors 74 2 10 SSU Interface J8 Expansion Terminator 75 2 11 Wiring Diagram for a Single SDU 2000 Shelf 76 2 12 Wiring Diagram for Multiple SDU 2000 Shelves 78 2 13 SSU 2000 Power Fuses 84 3 1 Direct Connection Using the Serial Port 89 5 1 Alarm and Event Status Breakdown 117 6 1 Block Diagram ...

Page 14: ...he LRU 206 8 17 Block Diagram of the DS1 LRU Module 207 8 18 Front Panel of the DS1 LRU Four Port Module 208 8 19 SSU 2000 Recommended Slots for LRM Installation 210 8 20 SDU 2000 Recommended Slots for LRM Installation 211 8 21 Installing the Cut Through Assembly in the SSU 2000 213 8 22 Installing the Cut Through Assembly in the SDU 2000 214 8 23 Orientation of t he SSU 2000 I O and CTA I O Conne...

Page 15: ...3E Clock Module Status LED Indicators 130 6 4 Stratum 3E Clock Module Performance Specifications 131 6 5 Type 1 Clock Module Status LED Indicators 134 6 6 Type 1 Clock Module Specifications 135 6 7 Communications Module Status LED Indicators 138 6 8 Communications Module Alarms 140 7 1 E1 Input Module Alarm Modes 147 7 2 E1 Input Module Event Reporting 150 7 3 E1 Input Module Status LED Indicators...

Page 16: ...tending Operation 230 9 2 Files Required for Upgrading the Firmware 231 9 3 SSU 2000 System Components 233 A 1 Clock Module Alarm Messages 243 A 2 Communications Module Alarm Messages 245 A 3 Input Module Alarm Messages 246 A 4 LRM Alarm Messages 249 A 5 Output Module Alarm Messages 250 A 6 Clock Module Event Messages 254 A 7 Communications Module Event Messages 255 A 8 Input Module Event Messages...

Page 17: ...tings 422 E 2 Stratum 2E and 3E Clock Module Default Settings 422 E 3 Type 1 Clock Module Options Defaults 423 E 4 DS1 and E1 Input Module Default Configuration 424 E 5 DS1 Input Module MTIE Limits 425 E 6 E1 Input Module MTIE Limits 426 E 7 GPS Input Module Default Configuration Settings 426 E 8 Line Re timing Module Configuration 427 E 9 DS1 and E1 Output Module Default Settings 428 E 10 2048 kH...

Page 18: ...18 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 19: ...mat layout and purpose of this guide In This Preface Purpose of This Guide Who Should Read This Guide Structure of This Guide Conventions Used in This Guide Warnings Cautions Recommendations and Notes Related Documents and Information Where to Find Answers to Product and Document Questions What s New In This Guide ...

Page 20: ...guration instructions or details primarily intended for qualified maintenance personnel This User Guide is designed for the following categories of users Systems Engineers Chapter 1 provides an introduction to the SSU 2000 Cross references in this chapter direct you to detailed system information in other chapters as appropriate Installation Engineers Chapter 2 through Chapter 9 and the Appendices...

Page 21: ... Clock Module Reference Data Provides detailed information on the Communications module and the various Clock modules available for use in the SSU 2000 Chapter 7 Input Module Reference Data Contains detailed information on the Input modules available for use in the SSU 2000 Chapter 8 Output Module Reference Data Describes the Output modules available for use in the SSU 2000 and in the SDU 2000 Cha...

Page 22: ...to individual topics within this guide When text appears this way it means SSU 2000 User s Guide The title of a document SSU CRITICAL IOC1 An operating mode alarm state status or chassis label Select File Open Click the Open option on the File menu Press Enter Press A named keyboard key The key name is shown as it appears on the keyboard An explanation of the key s acronym or function immediately ...

Page 23: ...o equipment do not disregard ESD cautions All ESD cautions use this symbol ESD cautions are installation operation or maintenance procedures practices conditions or statements that if not strictly observed may result in possible personal injury electrostatic discharge damage to or destruction of static sensitive components of the equipment Electrical Shock Caution To avoid electrical shock and pos...

Page 24: ...ur Symmetricom representative or your local sales office You can also contact us on the web at www symmetricom com What s New In This Guide Revision D of this guide contains the following new information New format and typography to make the text easier to read New section for provisioning the SSU 2000 at startup see Initial Provisioning on page 92 New sections for the RS 422 Output module the 204...

Page 25: ...000 and provides a theory of operation for the unit The SDU 2000 expansion shelf is introduced and described In This Chapter Overview Typical System Configurations System Architecture System Components Communications Protocol Overview of SSU 2000 Operation Indicators and Controls SDU 2000 Synchronization Distribution Unit ...

Page 26: ...Unit SSU and Timing Signal Generator TSG The SSU 2000 allows for the integration of a variety of synchronization reference schemes including GPS and land line DS1 E1 The SSU 2000 meets or exceeds performance requirements for ANSI and Telcordia Technologies Bellcore Stratum 2 and ITU and ETSI Type II Transit Node clocks The SSU 2000 is designed to comply with the application flexibility and redunda...

Page 27: ...hich may indicate abnormal operation or a change in the unit s operational status For example an event may be a parameter which exceeds a user set threshold usually 2 thresholds are provided Each event can be assigned by the user to one of four modes including IGNORE REPORT ALARM or FAIL Typical System Configurations The modular design of the SSU 2000 permits a great deal of flexibility in configu...

Page 28: ...p to 24 external signals such as DS1 E1 composite clock and various clock frequencies Time of day functionality is available through an Ethernet port employing NTP Figure 1 3 SSU 2000 Configured as a Primary Reference Source SSU 2000 Configured as a Monitor Only System The SSU 2000 can also be configured as a monitor only system Figure 1 4 in which one of the inputs is designated as the reference ...

Page 29: ...signal on a priority basis System holdover and filtering performance is dependent on the quality of oscillators used in the SSU 2000 s internal clock modules Stratum 2E or Stratum 3E A selection of hot swappable modules and powerful software allows users to easily configure upgrade or expand the SSU 2000 shelf to meet a variety of telecommunications synchronization application requirements Modules...

Page 30: ...f the input signals Wander is reported in terms of Maximum Time Interval Error MTIE and Time Deviation TDEV The data is then stored for use in the SSU 2000 and reported through the Communications module You can install one or two GPS Input modules that use the satellite based Global Positioning System signals as a synchronization reference The Input signal types supported are DS1 Clock unframed E1...

Page 31: ...ive and Non revertive In the Revertive mode if an input used as the system reference is disqualified for any reason the reference switches to the next highest input and reverts to the initial input when that input is re qualified In this mode the reference switches two times once when the disqualifying event occurs and again when the initial input is re qualified In the Non revertive mode the syst...

Page 32: ...st slot has the highest priority the priority decreases to port 1 on the Input module in the rightmost slot Port 2 on the module in the leftmost slot has the next lower priority decreasing to Port 2 on the Input module in the rightmost slot Port 3 on the module in the leftmost slot has the next lower priority and Port 3 on the module in the rightmost slot has the lowest priority If the Input modul...

Page 33: ...ntrols clock frequency by adjusting the control value of the Direct Digital Synthesis DDS function in each Clock module The adjustments are processor controlled and based on measurements performed and computed in the Input module s Clock modules may be Stratum 2E and Stratum 3E Outputs are maintained by the active input reference signal if both clocks should ever fail or be removed from the system...

Page 34: ...fication test to verify operation If the module is installed in the SSU 2000 with power already applied and with other modules installed the Communications module reads the configuration of the modules in the SSU 2000 and the modules in all installed SDU 2000 expansion shelves This information is saved in nonvolatile memory in the Communications module If power is applied to the SSU 2000 after the...

Page 35: ...e event occurs and on demand but no alarm is generated For example the status of the SSM at each input port and at the output ports is reported when it changes and when the user sends an inquiry but no alarm is generated Report Mode The REPORT mode option is used to report alarm indications only An ALARM command is available in the SSU 2000 that allows a user to view the current status of alarm in...

Page 36: ...example a FAIL event detected in Clock A causes a switchover from Clock A to Clock B effectively removing Clock A from the system The FAIL event is reported on all communications ports and an alarm is generated System Components A fully expanded SSU 2000 installation contains the following physical components SSU 2000 Main shelf populated with various combinations of Clock Input Output and Communi...

Page 37: ...nents in a Typical SSU 2000 Installation Module Assignments All SSU 2000 modules are equipped with card ejectors and plug in from the front of the shelf Each module is secured in the shelf with captive fasteners The module assignments for the SSU 2000 main shelf are listed in Table 1 1 and are shown in Figure 1 7 ...

Page 38: ...the front of the shelf The first or left most slot A1 is assigned to the primary clock module Clock A Slot A2 is assigned to the Communications module and slots A3 through A11 are assigned to various combinations of input modules and output modules Slot A12 is reserved for the secondary clock module Clock B Table 1 1 Slot Assignments for Specific Modules Slot Module A1 Clock Module A A2 Communicat...

Page 39: ... the SSU 2000 Each I O connector is associated with a specific I O module slot I O adapter panels are available to convert the 50 Pin Micro D female connectors to telecommunications standard Balun balanced unbalanced or DE9 connectors see Appendix D Connector Pinouts for additional details Dual set of power terminals and dual set of grounding lugs for connecting external power and grounding to the...

Page 40: ...nputs when the shelf is configured with plug in modules as a monitor only Two antenna connectors used to attach radio receiver antennas The A antenna connector J6 connects to slot 1A3 the B antenna connector J7 connects to slot 1A5 Interface connector for the optional SDU 2000 Synchronization Distribution Unit output signal expansion system Up to four expansion shelf can be connected in daisy chai...

Page 41: ...ation of Power Fuses on the Rear Panel Antenna Connectors The SSU 2000 contains two TNC connectors to allow for connection of a radio antenna Connector J6 is wired into I O slot A3 and connector J7 is wired into I 0 slot A5 the only slots that can be used for installing a Radio input module A variety of GPS antennas are available as accessories for the SSU 2000 see Appendix C Antennas Communicatio...

Page 42: ...e of 37 to 72 vDC Each power input to the main shelf is accomplished using a 2 connection terminal strip with the negative side fused Both connections are isolated from frame and signal grounds In the event of the loss of either the A or B input the system senses the loss of power reports the loss of the power input and continues normal operation on the remaining power input If both power supply i...

Page 43: ...ubidium oscillator and meets the requirements of ANSI and Telcordia Industries Bellcore for Stratum 2 clocks This clock also meets the ITU T and ETSI specifications for Type II Transit Node clocks The module reads measurement data from the input modules provide frequency control of its oscillator through DDS circuitry and generates a reference signal used by the input and output modules The clock ...

Page 44: ...they occur For more information see Communications Module on page 136 Input Modules 1 Port and 3 Port DS1 E1 Input Modules The DS1 and E1 Input modules are available with both 1 Port and 3 Port configurations These modules receive signals and perform phase measurement comparisons with the Clock modules that are installed in the SSU 2000 The Clock modules use this information to phase and frequency...

Page 45: ...te clock input reference signal Output Modules E1 Output Module The E1 Output module uses one of three 4 kHz clocks from the SSU 2000 main shelf backplane to generate a phase locked signal of 2 048 MHz If the unit is inserted into an SDU 2000 expansion shelf a fourth 4 kHz clock D clock is available The phase locked 2 048 MHz signal is used to generate a set of 20 output signals for distribution t...

Page 46: ... independently of other ports relays on each output disconnect the driver output from the output pins A squelch feature turns off selected ports when the input signal falls below predetermined quality levels See RS 422 Output Module on page 198 Line Retiming Unit LRU The LRU is comprised of a Line Re timing Module LRM and a Cut Through Assembly CTA The LRU is available in both a two port Dual and ...

Page 47: ...nput Output Connectors Input and Output Adapter Panels All Input and Output module signals connect to from the rear panel of the main shelf and expansion shelf using 50 pin SCSI II type connectors To adapt signals from 50 pin SCSI connectors to conventional BNC Balun and 9 pin D sub connections you use Input and Output Adapter panels I O Adapter panels that install in the rack either directly abov...

Page 48: ... O adapter for Output modules 75 ohm Balun Outputs one adapter panel accommodates one output module non redundant or one pair of redundant modules Output I O adapter for Output modules D9 outputs one adapter panel accommodates one Output module non redundant or one pair of redundant modules These adapter panels are shown in Figure 1 11 and described in greater detail in Chapter 7 Input Module Refe...

Page 49: ...ICS commands are designed in a more readable interface for users with an instructional help facility Refer to Interactive Command Set on page 315 for more information NTP Network Time Protocol The Network Time Protocol NTP is used to synchronize the time of a computer client or server to another server or reference time source such as a GPS receiver or local timing source The SSU 2000 implements t...

Page 50: ... more information Software Versions There are six different versions of software available for the SSU 2000 as indicated in Table 1 2 The functionality and commands that are available vary from one version of software version to the next depending on the specific features of the software package and are described in Appendix B Communications Protocol Graphical User Interface SynCraft is a software...

Page 51: ...cillators on any installed Clock modules have warmed up the SSU 2000 enters the ACQUIRE mode to phase lock the oscillators to the external references After the SSU 2000 reaches the LOCKED mode on at least one of the Clock modules any change of state is reported as an Event Synchronization Status Messages SSMs The SSU 2000 supports input and output SSMs SSMs provide a method for providing clock qua...

Page 52: ...munications status alerting users of any Events that exceed alarm thresholds SDU 2000 Synchronization Distribution Unit Up to four SDU 2000 Synchronization Distribution Units expansion shelves can be attached to the SSU 2000 for output expansion Figure 1 12 and Figure 1 13 Each expansion shelf contains two Buffer modules and 14 output modules can be a combination of output modules Four expansion s...

Page 53: ... is designed to be compatible with international environmental safety and electromagnetic compliance EMC standards for 48 60 vDC powered telecommunication transmission equipment installed in telecommunication centers with inside telecom signal connections The farthest Expansion shelf may be located up to 200 feet 61 meters from the SSU 2000 main shelf Figure 1 13 Rear VIew of the SDU 2000 Expansio...

Page 54: ... shelf for status and firmware downloading purposes Each expansion shelf extends the expansion bus and D clock to the next shelf in the daisy chain The last expansion shelf uses a set of termination plugs on the Expansion Bus Connector and the Backup Clock Connector Each expansion shelf can support any combination of up to ten 2048 kHz Composite Clock CC or framed 2048 kbit s E1 or DS1 modules eac...

Page 55: ...12713020 002 2 Revision D April 2004 SSU 2000 User s Guide 55 Product Overview SDU 2000 Synchronization Distribution Unit Figure 1 14 SDU 2000 Block Diagram ...

Page 56: ...ource is usually connected to J15 SDU Backup Clock For redundancy a backup clock is supplied to each expansion shelf to allow it to continue operating if the main expansion bus cable is accidently disconnected or dislodged The SSU 2000 provides a backup clock Clock D to the SDU Backup Clock terminal labeled J16 Using a Tee connector Connector J16 feeds an additional SDU 2000 shelf When installing ...

Page 57: ...h the motherboard to the Output modules Other common module features include Any module can be inserted or removed while power is applied without affecting the operation of other modules in the system All modules are individually fused to protect the system in case of a short circuit on any one module The SSU 2000 and the SDU 2000 share common Output modules All modules have front panel LED status...

Page 58: ...t connections All modules plug in from the front of the shelf Controls and Indicators All modules installed in the SDU 2000 expansion shelf contain LED status indicators for displaying status Any faults from the installed modules are sent to the SSU 2000 Communications module through the buffer modules the appropriate alarm relays are set and communication status is sent to alert users of any even...

Page 59: ...Synchronization Supply Unit In This Chapter Unpacking and Inspecting the Shelf Preliminary Procedures Rack Mounting the SSU 2000 Grounding and Power Input Making Connections Making Alarm Connections Connecting Antennas Connecting an SDU 2000 Expansion Shelf Remote Reset Handling Modules Installation Checklist Powering Up the SSU 2000 Normal System Indications During Turn Up After Turn Up ...

Page 60: ...nd Materials on page 61 Ensure that the system location does not cause electromagnetic interference with other equipment in the area see Electromagnetic Interference EMI Considerations on page 61 Ensure that adequate ventilation space is available in the rack or equipment cabinet to safely operate the shelf see Ventilation Considerations on page 62 Ensure that the mounting rack or equipment cabine...

Page 61: ...e instrument can adversely affect the operation of nearby equipment To prevent the SSU 2000 from interfering with other equipment it must be installed and operated as described in the following paragraphs All cables connected to the SSU 2000 should be shielded with metal connector shells The connectors on the rear panel of the shelf are shielded with the shields connected to frame ground Follow lo...

Page 62: ... 7 cm from the front of the rack An SSU 2000 rack mounting diagram is shown in Figure 2 1 1 Attach a mounting bracket to each side of the shelf by aligning two columns three holes per column of the bracket with the holes on the side of the shelf Use suitable screws for attaching the mounting bracket Ensure that both brackets are attached at equal distances from the front of the shelf 2 Mount the i...

Page 63: ...nting the SSU 2000 Figure 2 1 Shelf and I O Adapter Rack Mounting 3 If not using expansion shelves verify that the Bus Termination Assembly is inserted into J9 on the rear panel of the main shelf Recommendation When possible install the shelf at eye level to aid in viewing and connecting cables ...

Page 64: ...2 position 6 terminal block in the upper left corner of the rear panel and the B BUS connection is a 2 position 6 terminal block in the upper right corner of the rear panel The terminal positions are labeled 48V and RTN The 48V side of each bus is fused with a 5 Amp fuse The 48V power inputs are DC Isolated from frame ground and logic ground Both the A BUS and B BUS are fed to the individual modul...

Page 65: ...These connections are labeled LG and are located next to the FG studs and are strapped together with a jumper as shown in Figure 2 2 The jumper strap can be removed to isolate the frame and logic grounds Logic ground is AC bypassed to frame ground by capacitor C1 on the backplane 2 Using a digital voltmeter measure between the ground and chassis and verify that no voltage exists between them Figur...

Page 66: ...o the B BUS screws Symmetricom recommends that you use a 6 spade lug termination for each power lead Figure 2 3 Power Terminal Blocks Making Connections Making I O Connections The SSU 2000 shelf has I O interface connections for connecting the SSU 2000 to the corresponding I O adapter panels Refer to Chapter 7 Input Module Reference Data and Chapter 8 Output Module Reference Data for information r...

Page 67: ...he relationship between the I O slot and the rear panel connector Connectors J10 through J18 are labeled I O 1 through I O 9 The signal connections on these I O connectors are set up in differential pairs as Tip and Ring connections Figure 2 4 SSU 2000 Rear Panel Table 2 1 I O Module Slot to I O Connector Relationship Label Name Chassis Slot I O Connector I O 1 A3 J10 I O 2 A4 J11 I O 3 A5 J12 I O...

Page 68: ...utput Summer connectors The pinout of the Output Summer adapter is the same as the I O interface connectors see Table D 7 To install the Output Summer adapter 1 Remove the two retaining screws on each connector that the Output Summer adapter is to be installed on 2 Install Output Summer adapters on all I O connector pairs that require redundancy see Figure 2 5 3 Tighten all Output Summer adapters ...

Page 69: ...s use a shielded direct connect cable with the shield connected to pin 1 Note A third EIA 232 serial port may be connected to the Communications module Refer to Communications Module on page 136 for more information Table 2 2 Communications Port Assignments Port Function Protocol Serial Ports EIA 232 A J4 User selectable as either an ICS or a TL 1 interface The port defaults to ICS upon initializa...

Page 70: ...and handshaking disabled To change these settings connect the SSU 2000 to a terminal device or PC using a serial communications program protocol See Communicating by Serial Port on page 88 for more information Table 2 3 shows the EIA 232 Connector pin assignments for the SSU 2000 DE9 communications connectors Making Ethernet Connections The Ethernet 10 Base T connection is located on the rear pane...

Page 71: ...to frame ground Making Alarm Connections The SSU 2000 has two alarm terminal blocks located on the rear panel for attaching external circuits to the SSU 2000 and are shown in Figure 2 7 Both blocks are nine position 6 filtered terminal blocks The local connections are made on TB1 and the remote connections are made on TB2 The terminal blocks are labeled Alarm Closures Local and Remote The connecti...

Page 72: ...wing steps to ensure proper alarm connections to the SSU 2000 1 Remove both fuses from the rear panel 2 Locate the ALARM terminal blocks connectors labeled MAJOR ALARMS TB1 and MINOR ALARMS TB2 on the rear panel 3 Connect office alarms to the REMOTE and LOCAL terminals with 18 AWG wire 4 Verify that correct wiring connections have been made 5 Reinstall both fuses Table 2 4 Alarm Relay Connections ...

Page 73: ... part number 12013050 xxx 0 and the Backup Clock cable 12013115 xxx 0 These connections are made through connector J8 a DB25S female connector with locking post labeled SDU INTERFACE and connector J9 a BNO connector labeled SDU BACKUP CLK These connectors are on the rear panel of the SSU 2000 and are shown in Figure 2 8 The corresponding connectors on the rear panel of the SDU 2000 are shown in Fi...

Page 74: ...and Backup Clock J16 Connectors If you are not installing an SDU 2000 Expansion shelf you must install the Expansion Terminator on J8 on the rear panel Figure 2 10 shows the SSU 2000 Expansion Terminator Install the SDU 2000 Expansion shelf using the procedure described in Rack Mounting the SSU 2000 on page 62 Then install power and ground connections using the procedure described in Grounding and...

Page 75: ...ch the other end of the Expansion Cable to either J17 or J15 on the rear panel of the SDU 2000 If you are installing only one SDU 2000 then attach the Expansion Terminator to either J15 or J17 whichever is available 4 Attach one end of the Backup Clock cable part number 12013115 xxx 0 the xxx indicates the length of the cable to J9 on the rear panel of the SSU 2000 5 Install a BNO tee connector pa...

Page 76: ...e Expansion Cable part number 12013050 xxx 0 the xxx indicates the length of the cable to either J17 or J15 on the rear panel of the first SDU 2000 shelf whichever is available 3 Attach the other end of the Expansion Cable to either J17 or J15 on the rear panel of the second SDU 2000 shelf If you are not installing a third SDU 2000 then attach the Expansion Terminator to either J17 or J15 of the s...

Page 77: ... S2 on the rear panel of the second SDU 2000 to the 120 Ohms position 10 Set the Shelf Address switch S1 on the rear panel of the second SDU 2000 shelf to the 3 position Remote Reset The SSU 2000 shelf has a remote reset input which can be used to remotely initiate system firmware reset if the need should arise The remote reset connections are made via connector J19 which is a BNO connector labele...

Page 78: ...Installing the SSU 2000 Remote Reset 78 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 Figure 2 12 Wiring Diagram for Multiple SDU 2000 Shelves ...

Page 79: ...e by using a grounded protective wrist strap and normal equipment grounding Two ground connectors are provided on the side of the unit to connect these straps to frame ground one on each mounting bracket 2 Avoid touching component leads and edge connectors 3 Avoid placing the module on an ungrounded surface 4 Avoid allowing the module to come in contact with insulated surfaces Installing a Module ...

Page 80: ...t The example commands are for slot 3 in the main shelf 1 Connect to the SSU 2000 using one of the methods described in Establishing a Connection With the SSU 2000 on page 88 The system prompts for a user name 2 Log in to the system using your user name and password 3 Disable the module using either ICS or TL1 commands The example commands are for slot 3 in the main shelf ICS command Type CONFIG 1...

Page 81: ...egistry All outputs from the disabled module will turn off unless a summer adapter is installed on the I O connector on the rear panel of the shelf The example commands are for slot 3 in the main shelf 1 Connect to the SSU 2000 using one of the methods described in Establishing a Connection With the SSU 2000 on page 88 The system prompts for a user name 2 Log in to the system using your user name ...

Page 82: ...ABLE then press Enter TL1 command DISC MODULE S1A3 123 4 Loosen the captive screws located at the top and bottom of the module front panel 5 Pull up on the top extractor and down on the bottom extractor to unseat the module from the connector on the backplane 6 Slide the module out of the shelf 7 Install a blank filler panel to cover the empty slot 8 Remove the module from the registry using eithe...

Page 83: ...dules and filler panels in designated slots Use proper handling technique 9 Connect primary power to A BUS screws and secondary power to B BUS screws 10 Measure voltage at POWER A and POWER B if used and verify it is 38 to 72 vDC 11 Insert the A BUS and B BUS fuses into the holders on the rear panel of the SSU 2000 12 Verify all modules are receiving power and generating regulated DC outputs by ch...

Page 84: ...is as shown in Figure 2 13 To power down the shelf remove both fuses Figure 2 13 SSU 2000 Power Fuses Table 2 5 Communications and Buffer Module LED Indications LED State Indication Power On At least one 48V Power Supply is connected Power Off No 48V Power Supply A or B connected 48V Power Supply A or B On Green Power Supply is connected 48V Power Supply A or B Off No 48V Power Supply connected to...

Page 85: ... installed modules go through a sequence as follows Stratum 2E Clock Module The POWER LED turns green and stays green when the fuses are installed in the Main chassis The STATUS LED blinks green and amber for approximately 10 to 15 seconds and then stays green The WARMUP LED turns amber for approximately 30 seconds to 5 minutes it then turns off and the ACQUIRE LED turns green The ACQUIRE LED stay...

Page 86: ...links for approximately 5 to 10 seconds and turns green for the reference input and off for the others The INPUT LED blinks for approximately 5 to 10 seconds and turns green for every valid input or amber for not valid inputs Output Module The POWER LED turns green when power is applied to the unit and stays green The STATUS LED blinks green and amber for approximately 10 to 15 seconds and then st...

Page 87: ... instructions and software provisioning procedures for the SSU 2000 system In This Chapter Controls and Indicators Establishing a Connection With the SSU 2000 Adding An Administrator Level User to the System Adding Users to the System Initial Provisioning Checking Alarm Status Overview of the SSU 2000 Security System Restoring Factory Defaults ...

Page 88: ...e SSU 2000 The DCE position is for connection to a PC and the DTE position is for connection to a modem Reset RST switch on the Communications module All other controls on the SSU 2000 are software based To provision the settings you must first connect to the SSU 2000 using a serial port or the Ethernet port Establishing a Connection With the SSU 2000 You can connect to the SSU 2000 using either a...

Page 89: ...ty 1 stop bit and 9600 baud rate 4 Start the terminal emulation software and press Enter The system prompt should appear If it does not recheck each step in this procedure 5 For the initial installation create an Administrator level user as described in Adding An Administrator Level User to the System on page 91 before proceeding with the Ethernet setup Figure 3 1 Direct Connection Using the Seria...

Page 90: ...k and press Enter 4 Type ip gate followed by the IP address of the gateway expressed in dotted decimal notation for example 192 168 0 1 and press Enter 5 Type restart 1A02 and press Enter to restart the Communications module 6 The system responds with Are you sure Type YES and press Enter 7 Type ip and press Enter to verify that the information is correct 8 Type bye and press Enter to log off the ...

Page 91: ... for the first time system login otherwise enter your password and press Enter The system prompt appears 4 Type user add and press Enter The system prompts you for a user name 5 Enter a username and press Enter The name you enter will be the log in name for the system administrator The system prompts you for a password 6 Enter a password and press Enter The password you enter will be the log in pa...

Page 92: ... s password and press Enter The system prompts for an access level 7 Enter the appropriate access level 0 through 4 and press Enter Refer to Overview of the SSU 2000 Security System on page 98 for more information 8 Type bye and press Enter to log off the system 9 Log back in using the new user s username and password to verify that the account exists 10 Type bye and press Enter to log off the sys...

Page 93: ...ppropriate mode ICS command Type REF MODE PRI then press Enter TL1 command Type SET INPUT REF 123 port PRI where 123 is an arbitrary ctag value and port is the selected input port in the format S1Ax z where x is the slot number 3 12 and z is the channel number 1 3 Repeat this command for all inputs 4 Provision the clocks to enable auto return revertive mode Symmetricom generally recommends that au...

Page 94: ...slot 3 and slot 5 of the main SSU 2000 shelf Set the priority level for each module ICS command Type INPUT 1A3 PRI 1 then press Enter Type INPUT 1A5 PRI 1 then press Enter if a module is present in slot 5 TL1 command SET PRMTR INPUT S1A3 123 ON 1 enables the module in slot 3 and sets its Priority to 1 SET PRMTR INPUT S1A5 123 ON 1 enables the module in slot 5 and sets its Priority to 1 Provisionin...

Page 95: ... Priority to the value 1 10 indicated Repeat this command for each CC Input port and each slot 3 Disable all slots and or ports with no connected input signal to prevent spurious alarms ICS command Type INPUT xAy DISABLE then press Enter where x is the slot number and y is the port number Repeat this command for each unused port and slot TL1 command SET PRMTR INPUT S1Ay z 123 OFF where y is the sl...

Page 96: ... bit position Type INPUT xAy SSM 4 8 then press Enter TL1 commands SET PRMTR INPUT S1Ay z 123 ESF D4 CCS CAS 1 1 544 2 048 5 10 ssm zs crc bit where y is the slot number and z is the port number the numbers indicate the input frequency in megaHertz ssm zs and crc are ON or OFF as appropriate Bit indicates the position 4 8 of the SSM in E1 signals SET PRMTR CCINP S1Ax y 123 zs for Composite Clock I...

Page 97: ...on the output module as appropriate ICS command Refer to the OUTPUT command description in Interactive Command Set on page 315 for details on all command options TL1 command Refer to the SET PRMTR OUT commands for the various Output modules in TL1 Command Interface on page 266 3 DIsable unused output ports to prevent spurious alarms ICS command Type OUTPUT xAy DISABLE then press Enter where x is t...

Page 98: ... the procedure in Establishing a Connection With the SSU 2000 on page 88 The SSU 2000 prompt appears 2 Log in to the SSU 2000 ICS command Type login followed by the administrator s user name and press Enter The system prompts for a password Type the administrator s password and press Enter The system prompt SSU 2000 appears TL1 command Type ACT USER uid 123 pwd where uid and pwd are the administra...

Page 99: ...0 ships with a factory default basic configuration set and often does not require further configuration Refer to Appendix E Default Settings for a list of the factory default settings and the default Priority Quality Level PQL values Table 3 1 User Access Security Levels Level ID Description Idle 0 Security level 0 is available when no user is logged in This level allows Idle users to view a list ...

Page 100: ...rator s user id and password respectively 123 is an arbitrary ctag value 3 Type alarm 1A12 03 1 shelf 12 slot 03 alarm number and press Enter 4 Type alarm 1A12 and press Enter to verify that 03 changed to major 5 Type bye and press Enter to log off the system Customizing Other Configuration Options The SSU 2000 allows you to change any or all configuration settings Use the following procedures to ...

Page 101: ...uter to the SSU 2000 using the procedure in Establishing a Connection With the SSU 2000 on page 88 The SSU 2000 prompt appears 2 Log in to the SSU 2000 ICS command Type login followed by the administrator s user name and press Enter The system prompts for a password Type the administrator s password and press Enter The system prompt SSU 2000 appears TL1 command Type ACT USER uid 123 pwd where uid ...

Page 102: ...Provisioning and Operating the SSU 2000 Restoring Factory Defaults 102 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 103: ... completion of installation system turn up and provisioning to verify that the system is correctly installed configured and operating properly At this point the system is ready to be placed in service Record the results on the data sheet provided in Commissioning Test Data Sheet on page 110 In This Chapter Readiness to Test Checklist SSU 2000 Commands Equipment Requirements Commissioning Tests Com...

Page 104: ...ter panel is installed above the SSU 2000 and cabled to the corresponding I O connector on the rear panel of the SSU 2000 7 If using the optional GPS Input module it is installed in slot A3 or A5 and a Radio antenna is attached to the corresponding Radio antenna connector on the rear panel of the shelf 8 At least one Output module is installed in chassis slot A4 through A10 unless the monitor only...

Page 105: ...unications analyzer to check for correct framing Sync Status Messaging SSM and line coding Oscilloscope with correct load terminations and cables to verify outputs PC or laptop with serial port and TCP IP connectivity and terminal emulation software such as Microsoft HyperTerminal or ASCII terminal If testing stability and accuracy of output against another primary reference source PRS a phase rec...

Page 106: ...terface If an Ethernet connection to a network has been installed use the following procedure to test the connection 1 Telnet from the PC to the IP address assigned to the SSU 2000 The system prompts for a user name 2 Type your assigned username and password and press Enter The system prompt appears 3 Type bye and press Enter to log off the system Testing the EIA 232 Ports To test the EIA 232 port...

Page 107: ... that a MINOR alarm was logged in the event log ICS format EVENT ALARM TL1 format RTRV EVENT S1A2 6 Replace the fuse to restore Power A to the unit 7 Verify that the alarm clears is reported and logged Testing the MAJOR Alarms To test the MAJOR alarm relay closures and software 1 Set the Power A alarm level to MAJOR ICS format ALARM 1A02 MAJOR TL1 format SET PRMTR ALARM S1A2 02 MAJOR 2 Remove Powe...

Page 108: ...7 Verify that the alarm clears is reported and logged 8 Type ALARM and press Enter to restore Power A to the original alarm level Testing the Reference Signals and Selection To test the reference signals and selection 1 Type INPUT to verify each input signal is present with no alarms Each reference input will be listed by module position and port number status phase A and B readings input PQL sign...

Page 109: ...ck type of ST2 or ST3E The PQL should be the level the clock is supplying to the output modules dependent on the reference input when in lock mode The frequency offset will be dependent on the clock type typically less than 2E 10 for ST2 and 1E 6 for ST3E This only indicates the uncorrected frequency offset of the oscillator which is being removed by the clock DDS circuitry The sigma value indicat...

Page 110: ...ollect sufficient data to verify the system output meets specifications 2 Process the collected 24 hour data and verify that the frequency and stability MTIE and TDEV meet the specifications This completes the commissioning tests The system is ready to be placed in service Commissioning Test Data Sheet The following test data sheet should be completed as an indicator of operational readiness of th...

Page 111: ...eshooting This chapter provides preventive and corrective maintenance procedures equipment re ordering return procedures and troubleshooting procedures for the SSU 2000 In This Chapter Responding to SSU 2000 Alarms Preventive Maintenance Corrective Maintenance Troubleshooting Re ordering Information ...

Page 112: ...e unit require cleaning the exterior chassis may be wiped off using a soft cloth dampened with mild soapy water Caution To avoid damage to the unit under no circumstances should the interior chassis of the SSU 2000 be allowed to come in contact with water Caution To avoid damage to the unit never attempt to vacuum the interior of the SSU 2000 Caution To avoid the possibility of the lithium battery...

Page 113: ...ng near high voltage lines In particular Use extreme caution when installing the GPS antenna near under or around high voltage lines Follow local building electrical codes for grounding the antenna system that is used with the SSU 2000 Caution For continued fire protection fuse the interface A power feeds at the power distribution source for 5A vDC This unit must be grounded Refer all servicing to...

Page 114: ...inputs for a tripped breaker or blown fuse on the input power control panel e Replace module f If unable to correct the problem contact Symmetricom Global Services All Modules Module Replacement Communications Module 2E Clock Module 3E Clock Module Type 1 Clock Module 1 Port DS1 Input Module 3 Port DS1 Input Module 1 Port E1 Input Module 3 Port E1 Input Module CC Input Module GPS Input Module DS1 ...

Page 115: ...endix A Alarms and Events details event and alarm descriptions default event and alarm levels status messages and corrective action Table 5 2 SDU Corrective Action Table Component Corrective Action Part Number Motherboard or Main Chassis Fault Contact Symmetricom Global Services 25413023 000 0 Defective Cable Replace defective cable 805SCSI 0050 1 m cable other lengths available Module Fault s a C...

Page 116: ...onfigurations Regardless of the cause hardware seldom needs to be replaced If corrective action has been taken and the problem persists call Symmetricom Global Services When a Comms module is installed and functioning properly it monitors the SSU 2000 and logs unit events into non volatile memory for user inspection at a later date Events are conditions within the unit or at the interfaces of the ...

Page 117: ...ssages and corrective action Since a no fault alarm requires no action the Corrective Action category applies only to fault messages requiring user intervention Event Messages Table A 6 lists event messages categorized by module Each section lists status messages associated with each module and an event description of each message Figure 5 1 shows the structure of a typical Alarm and Event report ...

Page 118: ...eral device configuration Check that communication device is properly configured refer to Establishing a Connection on page 116 for more information Improperly installed or faulty Comms module Re seat the Comms module Press the RST button located on the front panel of module If problem is not rectified call Symmetricom Global Services Software emulator is configured to Com1 but cable is physically...

Page 119: ... firmware Press RST on Comms module front panel Faulty Comms module Replace Comms module Alarmed module is faulty Replace module Loss of power from Expansion shelf No power to unit Check to ensure that UPS if applicable is operating correctly Both A and B fuses on Expansion shelf are blown Remove fuses and replace Loss of ground Re attach ground wires Loose power cabling to Expansion shelf Check t...

Page 120: ... not connected to the Input module Connect the I O adapter panel to the Input module No output signal on the output panel Port is not turned on Use the appropriate command to turn the port on The I O adapter panel is not connected to the Output module Connect the I O adapter panel to the Output module Note If fault isolation and corrective action have been performed and the problem persists contac...

Page 121: ...ures for products being returned for repair to protect the equipment during shipment Connectors should be protected with connector covers or the equipment should be wrapped in plastic before packaging Ensure that the front and rear panels are protected when packaged Indicators on any module are not illuminated No power to unit Verify that there is power to BUS A and BUS B and that the power inputs...

Page 122: ...for future reference 2 Provide a description of the problem product item number serial number and warranty expiration date 3 Provide the return shipping information customer field contact address telephone number and so forth 4 Ship the product to Symmetricom transportation prepaid and insured with the Return Material Authorization RMA number and item numbers or part numbers clearly marked on the ...

Page 123: ... Chapter 6 Clock Module Reference Data This chapter contains reference information for the Clock and Communications modules available for use in the SSU 2000 In This Chapter Stratum 2E Clock Module Stratum 3E Clock Module Type 1 Clock Module Communications Module ...

Page 124: ...onization with the redundant Clock module Its hardware and software also provides for temperature compensation an initial offset adjustment and frequency adjustment resolution of 1 x 10 13 or better With redundant Clock modules one is selected as the master and the other as backup with automatic switching on module removal or failure The master Clock module controls the operation of the Input and ...

Page 125: ...SSU 2000 User s Guide 125 Clock Module Reference Data Stratum 2E Clock Module Functional Block Diagram A simplified block diagram of the Stratum 2E Clock module is shown in Figure 6 1 Figure 6 1 Block Diagram of the Stratum 2E Clock Module ...

Page 126: ... 6 1 Figure 6 2 Front Panel of the Stratum 2E Clock Module Table 6 1 Stratum 2E Clock Module Status LED Indicators Indicator Color Description Power Green On The Clock module is receiving power Off No power present Status Green Amber On Green No faults detected On Amber blinking Clock module Is downloading firmware On Amber Unknown Clock module status or fault detected Selected Green On Module sel...

Page 127: ...curacy Within 5 x 10 10 the first year Within 5 x 10 9 after 10 years Holdover Stability Rubidium LO 0 to 24 hrs 10 to 50 C 0 to 24 hrs 0 to 50 C 30 days 10 to 40 C 30 days 0 to 50 C 9 x 10 11 1 x 10 10 1 5 x 10 10 1 7 x 10 10 Numeric Controlled Oscillator NCO PLL lock range 5 x 10 4 Tuning Resolution Locked Mode 1 x 10 13 Warm up Time Warm up Mode 20 minutes Wander Output Holdover Includes effect...

Page 128: ...odule communicates with the Communications module and the Stratum 2E Clock module to maintain phase synchronization with the redundant Clock module The Stratum 3E Clock module s hardware and software provides for temperature compensation aging compensation for the Quartz oscillator an initial offset adjustment and frequency adjustment resolution of 1 x 10 13 or better When serving as the master cl...

Page 129: ...U 2000 User s Guide 129 Clock Module Reference Data Stratum 3E Clock Module Functional Block Diagram A simplified block diagram of the Stratum 3E Clock module is provided in Figure 6 3 Figure 6 3 Block Diagram of the Stratum 3E Clock Module ...

Page 130: ...ratum 3E Clock Module Table 6 3 Stratum 3E Clock Module Status LED Indicators Indicator Color Description POWER Green On The Clock module is receiving power Off No power present STATUS Green Amber On Green No faults detected On Amber blinking Clock module is downloading firmware On Amber Unknown Clock module status or fault detected SELECTED Green On Module selected for providing outputs Off Modul...

Page 131: ... Performance Specifications Performance Characteristic Specification Free Running Accuracy Within 2 5 x 10 7 the first year vendor spec Within 3 7 x 10 6 after 20 years vendor spec Holdover Stability 0 to 24 hrs 10 to 50 C 0 to 24 hrs 0 to 50 C 5 x 10 9 1 x 10 8 Numeric Controlled Oscillator NCO PLL lock range 5 x 10 4 Tuning Resolution Locked Mode 1 x 10 13 Warm up Time Warm up Mode 20 minutes Wa...

Page 132: ...also provides an initial offset adjustment and frequency adjustment resolution of 1 x 10 13 or better With redundant Clock modules one is selected as the master and the other as backup with automatic switching on module removal or failure The master Clock module controls the operation of the Input and Output modules and downloads module configuration information to all modules except for the Commu...

Page 133: ... 2004 SSU 2000 User s Guide 133 Clock Module Reference Data Type 1 Clock Module Functional Block Diagram A simplified block diagram of the Type 1 Clock module is shown in Figure 6 5 Figure 6 5 Block Diagram of the Type 1 Clock Module ...

Page 134: ...ble 6 5 Type 1 Clock Module Status LED Indicators Indicator Color Description Power Green On The Clock module is receiving power Off No power present Status Green Amber On Green No faults detected On Amber blinking Clock module Is downloading firmware On Amber Unknown Clock module status or fault detected Selected Green On Module selected for providing clock signals for output generation Off Modul...

Page 135: ...f operation Off Clock module is not in Holdover mode Table 6 6 Type 1 Clock Module Specifications Performance Characteristic Specification Holdover Stability 0 to 24 hrs 5 to 45 C 2 x 10 9 after 30 days operation Numeric Controlled Oscillator NCO PLL lock range 5 x 10 4 Tuning Resolution Locked Mode 1 x 10 13 Warm up Time Warm up Mode 20 minutes Wander Output Holdover Includes effects of all SSU 2...

Page 136: ...s installed it performs an initial software verification test to verify operation If the module is installed in the SSU 2000 with power already applied and with other modules installed the Communications module reads the configuration of the modules in the main shelf and in all installed expansion shelves This information is saved in nonvolatile memory on the Communications module If power is appl...

Page 137: ...04 SSU 2000 User s Guide 137 Clock Module Reference Data Communications Module Functional Block Diagram A simplified block diagram of the Communications module is shown in Figure 6 7 Figure 6 7 Block Diagram of the Communications Module ...

Page 138: ...at convey visual status to the user as shown in Figure 6 8 and described in Table 6 7 Figure 6 8 Front Panel of the Communications Module Table 6 7 Communications Module Status LED Indicators Indicator Color Description Power Green On The module is receiving power Off No Power Present Status Green Amber On Green No faults detected On Amber Blinking Module is downloading firmware On Amber Module fa...

Page 139: ... the last generated event output last Using one of the available communication ports a user can request the following List of events by a given type of REPORT or ALARM List of events based upon a start and stop time Clear the event log Interactive mode ports can request Latest event logged A number of last events be displayed All information currently logged in the history buffer 48vDC Power A and...

Page 140: ...efault is 86 400 seconds or one day The elevation time is kept in each module The user can select delay periods for software alarms from 0 to 86400 seconds Changing the delay period generates an event The setting is stored in each module Note if the original value is set to IMMED 1 it means this error delay is not allowed to change and will happen immediately Table 6 8 lists the Communications mod...

Page 141: ...in chassis One local port Tied to the connector on the front panel of the Communications module Backplane communications port Used to communicate with other modules in the system Ethernet Port The Communications module implements one Ethernet port 10 BASE T that is routed to an RJ 45 connector on the rear panel of the main chassis For more information on Ethernet settings see Communicating by Ethe...

Page 142: ...Clock Module Reference Data Communications Module 142 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 143: ...ut Module Reference Data This chapter contains reference information for the Input modules available for use in the SSU 2000 In This Chapter 1 Port and 3 Port E1 Input Modules 1 Port and 3 Port DS1 Input Modules GPS Input Module Composite Clock Input Module Input Adapter Panels ...

Page 144: ...also be used for monitoring the frequency of incoming signals The modules accept either one or three of the following signals sine or square wave with a frequency of 1 1 544 2 048 5 or 10 MHz or framed communication type E1 If the input signal is a communications type the module monitors for Alarm Indication Signaling AIS Bipolar Violation BPV Loss of Signal LOS and Out Of Frame OOF errors In addi...

Page 145: ...t module maintains averages of past phase measurements including 7000 100 second averages 700 1000 second averages 70 10000 second averages To account for momentary jumps in phase the Input module uses a phase buildout algorithm for phase jumps greater than or equal to 1 microsecond per tenth of a second To prevent confusing frequency offsets with phase jumps the phase build out algorithm does not...

Page 146: ... falls more than three sigma above or below the mean is considered erroneous MTIE Calculation MTIE is a measurement of the relative noisiness of an input signal The Input module automatically without user intervention calculates MTIE for its inputs in accordance with the specifications in ANSI T1 101 and reported on demand for a 24 hour period MTIE data is retrieved on hour boundaries though the s...

Page 147: ...mine the traceability of inputs This traceability information is then used by the Clock modules in selecting a reference signal and embedded into the system s outputs For E1 inputs an SSM is valid if three consecutive matching SSMs are received SSM Selection Criteria If the E1 Input module is configured for provisioned mode it will use the provisioned SSM If configured for automatic mode the Input...

Page 148: ...als LOS AIS OOF BPV and CRC Unframed signals LOS Error and Clear Counters The E1 Input module maintains a count of the number of consecutive errored seconds for each error type for each port Once this error count exceeds a user set limit the input signal which has experienced the errors said to be in episode Refer to Changing Factory Defaults on page 100 for more information on setting the error c...

Page 149: ...Alarm Signals LOS AIS OOF BPV CRC The Input module does not report alarms below the level of an active alarm Cesium Fault Facilitates compatibility with older Hewlett Packard units Only valid if port one is configured to receive an unframed input signal User can select high or low logic level as alarmed If the hardware indicates that the cesium fault level matches the alarmed setting log an AIS al...

Page 150: ...odule and incoming signal status These LEDs are shown in Figure 7 2 3 port model illustrated and described in Table 7 3 Table 7 2 E1 Input Module Event Reporting Event Parameter One Parameter Two Module installed Module enabled Module disabled Module restarted Delay before restart in s Input Signal Episode Alarm and Faults Hardware Faults Received SSM Changed New PQL Old PQL Phase Buildout Phase v...

Page 151: ...een Unit is in Normal mode of operation no faults Amber Fault condition detected PORT 1 REF Green Amber On Green Selected On Amber Not good and ignored Off ignored or good and not selected PORT 1 INPUT Green Amber On Green Selected On Amber Not good and ignored Off ignored or good and not selected PORT 2 REF Green Amber On Green Selected On Amber Not good and ignored Off ignored or good and not se...

Page 152: ...ing Enabled On On Off On Off Input Frequency for unframed signals 10 MHz 1 MHz 1 544 MHz 2 048 MHz 5 MHz 10 MHz Framing Type CCS CAS or CCS Zero Suppression On On Off CRC Off On Off SSM Off On Off Provisioned PQL 3 4 3 1 16 Priority 0 0 to 10 0 Monitor E1 Bit Position 8 4 to 8 Cesium Fault Nominal Low Low High Off Input Signal Error Limit 10 seconds 1 to 100 for LOS and AIS 1 to 10000 for BPV CRC ...

Page 153: ...requency of 1 1 544 2 048 5 or 10 MHz or framed communication type DS1 If the input signal is a communications type the module monitors for Alarm Indication Signaling AIS Bipolar Violations BPVs Loss of Signal LOS and Out Of Frame OOF errors In addition the module extracts Synchronization Status Messages SSMs from the incoming data MTIE T10000 Limit 1 1100 2835 1100 0 to 100000 MTIE T10000 Limit 2...

Page 154: ...firmware input signal ports and other support circuitry The primary function of these modules is to perform time interval measurements on Clock module A and Clock module B using the reference input signals These measurements are used to adjust the frequency of the oscillators on the two Clock modules Functional Block Diagram A simplified block diagram of the 1 and 3 Port DS1 Input modules is shown...

Page 155: ... reading which falls more than three sigma above or below the mean is considered erroneous MTIE Calculation MTIE is a measurement of the relative noisiness of an input signal The Input module automatically without user intervention calculates MTIE for its inputs in accordance with the specifications in ANSI T1 101 and reported on demand for a 24 hour period MTIE data is retrieved on hour boundarie...

Page 156: ...used by the Clock modules in selecting a reference signal and embedded into the system s outputs See For a DS1 input signal an SSM is considered valid only after seven of the last ten received SSMs match For DS1 signals the Input module logs an alarm user set level if 10 seconds elapse and no SSM is detected SSM Selection Criteria If the Input module is configured for provisioned mode it will use ...

Page 157: ...ng or content Errors Tracked Framed signals LOS AIS OOF BPV and CRC Unframed signals LOS Error and Clear Counters The Input module maintains a count of the number of consecutive errored seconds for each error type for each port Once this error count exceeds a user set limit the input signal which has experienced the errors is said to be in episode The Input module maintains a count of the number o...

Page 158: ...ts Only valid if port one is configured to receive an unframed input signal User can select high or low logic level as alarmed If the hardware indicates that the cesium fault level matches the alarmed setting log an AIS alarm against port 1 Clear the alarm when the hardware s cesium fault level no longer matches the alarmed level Input Measurement Problems If the MTIE values for a selected clock e...

Page 159: ...Figure 7 4 and are described in Table 7 7 Table 7 6 DS1 Input Module Event Reporting Event Parameter One Parameter Two Card installed Card enabled Card disabled Card restarted Delay before restart in s Input Signal Episode Alarm and Faults Hardware Faults Received SSM Changed New PQL Old PQL Phase Buildout Phase value being built out Corrected phase value Configuration Changes New Value if necessa...

Page 160: ...reen Unit is in Normal mode of operation no faults Amber Fault condition detected PORT 1 REF Green Amber On Green Selected On Amber Not good and ignored Off Ignored or good and not selected PORT 1 INPUT Green Amber On Green Selected On Amber Not good and ignored Off Ignored or good and not selected PORT 2 REF Green Amber On Green Selected On Amber Not good and ignored Off Ignored or good and not s...

Page 161: ...led On On Off On Off Input Frequency for unframed signals 10 MHz 1 MHz 1 544 MHz 2 048 MHz 5 MHz 10MHz Framing Type ESF D4 or ESF Zero Suppression On On Off CRC Off On Off SSM Off On Off Provisioned PQL 3 4 3 1 to 16 Priority 0 0 to 10 0 Monitor Cesium Fault Nominal Low Low High Off Input Signal Error Limit 10 seconds 1 to 100 for LOS and AIS 1 to 10000 for BPV CRC and OOF MTIE T10 Limit1 325 1000...

Page 162: ...ications module Time of day from the Radio is transferred to the Communications module for distribution to clients connected to the same network The Communications module s internal 1PPS is synchronized to the 1PPS from the Radio The GPS Input modules monitor and report the status and performance of the module and the received radio signals Each module type communicates with the Communications mod...

Page 163: ...pril 2004 SSU 2000 User s Guide 163 Input Module Reference Data GPS Input Module Functional Block Diagram A simplified block diagram of the GPS Input module is shown in Figure 7 5 Figure 7 5 Block Diagram of the GPS Input Module ...

Page 164: ...f the GPS Input Module Table 7 9 GPS Input Module Status LED Indicators Indicator Color Description POWER Green On The module is receiving 5 vDC STATUS Green Amber Green Unit is in Normal mode of operation no faults Amber Fault condition detected firmware timed out ACQUIRE Green Amber On Green Selected as the clock reference Off Not selected as clock reference TRACKING Green Amber On Green Radio i...

Page 165: ...s the phase of the composite clock signals generated by Composite Clock Output modules This signal ensures that the phase of the composite clock output signals follows the phase of the composite clock input reference signal The module consists of a micro controller and firmware SRAM for data storage FLASH memory that contains the firmware and other support circuitry Table 7 10 GPS Input Module Con...

Page 166: ...for Loss of Signal LOS and Bipolar Violation BPV density Each module communicates with the Communications module to receive user configuration commands and to report status and performance for the Clock modules for frequency control Functional Block Diagram A simplified block diagram of the Composite Clock Input module is shown in Figure 7 7 Figure 7 7 Block Diagram of the Composite Clock Input Mo...

Page 167: ...k Input Module Table 7 11 Composite Clock Input Module Status LED Indicators Indicator Color Description POWER Green On The module is receiving 5 vDC STATUS Green Amber Green Unit is in Normal mode of operation no faults Amber Fault condition detected Blinking Disabled or firmware upgrade in progress REF Green On Selected as the input reference Off Not selected as input reference INPUT Green Amber...

Page 168: ...r type Switchable input termination impedance Switch selected link between signal and frame ground when a frame ground is connected to the lug on the rear panel 1 m SCSI connection cable is included with the Adapter The Input Adapter part number 22013069 001 0 used with a 1 Port Input module is shown in Figure 7 9 Each port has a switch selected BNC and a DE9 connector and the input termination im...

Page 169: ...ontains four SCSI II type connectors that connect to each Input module connection on the rear panel of the shelf via a supplied 1 m input cable A frame ground lug is supplied to connect a frame ground connection The pinout for the DB9 connector is listed in Table 7 13 Input Adapter Panel for 3 Port Input Modules Symmetricom offers three Input Adapter panels for use with 3 port Input modules Each p...

Page 170: ...ens 1 6 5 6 mm connector and a DE9 connector the input termination impedance is switch selectable between 50 75 100 120 or 2 2 kΩ The Input Adapter part number 22013066 003 0 has a switch selected Siemens 1 0 2 3 mm connector and a DE9 connector the input termination impedance is switch selectable between 50 75 100 120 or 2 2 kΩ The rear panel of the Input adapter contains three SCSI II type conne...

Page 171: ...an example of which is shown in Figure 7 11 These adapters connect directly to the I O ports on the rear panel of the SSU 2000 or SDU 2000 shelf Figure 7 11 Input Wire Wrap Adapter Table 7 15 Input Wire Wrap Adapters Part Number Description 22013186 000 0 Bridging 22013186 001 0 133 Ω impedance 22013186 002 0 120 Ω impedance 22013186 003 0 100 Ω impedance 22013186 004 0 75 Ω impedance 22013186 005...

Page 172: ...Input Module Reference Data Input Adapter Panels 172 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 173: ...er contains reference information for the Output modules available for use in the SSU 2000 and SDU 2000 In This Chapter E1 Output Module DS1 Output Module Composite Clock Output Module E1 2048 kHz Output Module 2048 kHz Output Module RS 422 Output Module Line Retiming Unit LRU Buffer Module Output Adapter Panels ...

Page 174: ...l of 2 048 Mbps If the unit is inserted into an SDU 2000 expansion shelf a fourth 4kHz clock D clock is available The phase locked 2 048 Mbps signal is used to generate a set of 20 output signals for distribution to large networks A microcontroller unit on the E1 Output module communicates with other boards in the main shelf and performs Output module configuration The module s memory subsystem EE...

Page 175: ...pril 2004 SSU 2000 User s Guide 175 Output Module Reference Data E1 Output Module Functional Block Diagram A simplified block diagram of the E1 Output module is shown in Figure 8 1 Figure 8 1 Block Diagram of the E1 Output Module ...

Page 176: ...1 E1 Output Module Status LED Indicators Indicator Color Description POWER Green On 5 vDC power available on the Output module Off 5 vDC not present on the module STATUS Green Amber On Green Module functioning correctly Blinking Amber Output module is downloading firmware On Amber Output module failure SOURCE A Green Amber On Green Clock A in slot 1 is the selected source clock On Amber Faulty or ...

Page 177: ... D is the selected source clock The module is in an Expansion shelf On Amber Faulty or missing Expansion clock Off Expansion clock is ignored or good and not selected OUTPUT FAULT Amber On Module has detected one or more faulty outputs Off All output signals are good Table 8 2 E1 Output Module Performance Specifications Performance Characteristic Specification Signal Alternate Mark Inversion AMI W...

Page 178: ...iew The DS1 Output module generates a phase locked signal of 1 544 Mbps using one of three 4 kHz clocks from the backplane of the SSU 2000 main shelf A B and C clocks If the module is inserted into the SDU 2000 Synchronization Distribution Unit expansion shelf a fourth 4 kHz clock D clock is available The phase locked signal generates a set of 20 output signals for distribution to large networks A...

Page 179: ...odule s memory subsystem EEPROM RAM and serial EEPROM stores the executable image the PLD image and other configuration and temporary information for an on module microprocessor The DS1 Output modules may be used individually or configured for operation as redundant pairs in the shelf Status LED Indicators The DS1 Output module status LED indicators are shown in Figure 8 4 and are described in Tab...

Page 180: ... clock On Amber Faulty or missing Clock B Off Clock B is good and not selected SOURCE C Green Amber On Green The Bypass clock Clock C is the selected source clock See Bypass Clock Clock C on page 32 On Amber Faulty or missing Bypass clock Off Bypass clock is ignored or good and not selected SOURCE D Green Amber On Green The Expansion clock Clock D is the selected source clock The module is in an E...

Page 181: ...y cycle 50 50 or 62 5 37 5 and phase delay from 0 to 3 4 µsec in 8 or more steps Refer to Changing Factory Defaults on page 100 for more information on duty cycle settings The outputs are byte and polarity phase aligned with the selected 4 kHz clock Each output signal is monitored for a failed output on an independent basis An output is said to be failed when either the polarity pulse falls below ...

Page 182: ...tput Module 182 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 Functional Block Diagram A simplified block diagram of the Composite Clock Output module is shown in Figure 8 5 Figure 8 5 Block Diagram of the Composite Clock Output Module ...

Page 183: ...le Status LED Indicators Indicator Color Description POWER Green On 5 vDC power available on the Output module STATUS Green Amber On Green Module functioning correctly Blinking Amber Output module is downloading firmware On Amber Output module failure SOURCE A Green Amber On Green Clock A in slot 1 is the selected source clock On Amber Faulty or missing Clock A Off Clock A is good and not selected...

Page 184: ...r Faulty or missing Expansion clock Off Expansion clock is ignored or good and not selected OUTPUT FAULT Amber On Module has detected one or more faulty outputs Off All output signals are good Table 8 6 Composite Clock Output Module Performance Specifications Performance Characteristic Specification Signal Bipolar Return to Zero Alternate Mark Inversion AMI Waveshape Per Bellcore GR 378 CORE Table...

Page 185: ...n zero suppression is on HDB3 encoding is used Provisioning the Signal Type You use software commands to set the signal type on each port of the E1 2048 kHz Output module To view or provision the output frequency using ICS commands see OUTPUT on page 356 To view the output frequency setting use the TL1 command RTRV PRMTR OUTE12048 described in Retrieve Commands and Responses on page 275 To provisi...

Page 186: ...ions Signal P 1 2048 P 2 2048 P 3 2048 P 4 2048 P 5 2048 P 6 2048 P 7 2048 P 8 2048 P 9 2048 P 10 2048 P 11 E1 P 12 E1 P 13 E1 P 14 E1 P 15 E1 P 16 E1 P 17 E1 P 18 E1 P 19 E1 P 20 E1 Squelch P 1 3 P 2 3 P 3 3 P 4 3 P 5 3 P 6 0 P 7 0 P 8 0 P 9 0 P 10 0 P 11 0 P 12 0 P 13 0 P 14 0 P 15 0 P 16 0 P 17 0 P 18 0 P 19 0 P 20 0 When the System PQL transitions to a PQL that crosses the user defined Output ...

Page 187: ...o the 5 in Digit 2 16 corresponding to the 1 in Digit 4 and 17 through 20 corresponding to the F in Digit 5 Use the Alarm command to display the alarm information for a given module the display includes all E1 2048 kHz Output module alarms including Alarm 10 Squelching Use the ALARM command described in ICS Commands on page 319 or the SET PRMTR OUTE12048 command described in TL1 Set Commands on pa...

Page 188: ...CLK C used by the E1 2048 kHz Output module you must install one of the following Input modules and connect an input signal to the module DS1 E1 or CC If the SSU 2000 has only GPS Input module s then set the Bypass mode to OFF to prevent the Output modules from generating the CLK C alarm alarm 4 Output Fault Handling When an output fault occurs a port fault alarm occurs Fault recovery is automatic...

Page 189: ... service The following example shows port 5 with an internal port fault port 7 with an external port fault and ports 10 11 and 12 disabled SSU out OUT STATUS Clk Clk Stat Port Status 1 1 1 1 1 1 1 1 1 1 2 Loc Type Sta Sel A B C D Redt PQL 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1A06 E12M Ok A N N 4 I E N N N Functional Block Diagram A simplified block diagram of the E1 2048 kHz Output module is sh...

Page 190: ...le 8 8 Figure 8 9 Front Panel of the E1 2048 kHz Output Module Table 8 8 E1 2048 kHz Output Module Status LED Indicators Indicator Color Description POWER Green On 5 vDC power available on the Output module Off 5 vDC not present on the module STATUS Green Amber On Green Output module functioning correctly Blinking Amber Output module is downloading firmware or the module is disabled On Amber Outpu...

Page 191: ...e selected source clock The module is in an Expansion shelf On Amber Faulty or missing Expansion clock Off Expansion clock is ignored or good and not selected OUTPUT FAULT Amber On Module has detected one or more faulty outputs Off All output signals are good Table 8 9 E1 2048 kHz Output Module Specifications Signal 120 Ω 75 Ω E1 Specification ITU T G 703 9 10 98 ITU T G 703 9 10 98 Signal AMI or ...

Page 192: ... non redundant configuration a failed output will not be turned off as some equipment may tolerate a wide range of level and still be operating In redundant operation a failed output will be turned off in one module at a time to try and isolate the source of the problem The outputs meet the criteria set forth in ITU T G 703 for signal type amplitude and waveshape Output Squelching A new feature av...

Page 193: ...4 3 P 5 3 P 6 0 P 7 0 P 8 0 P 9 0 P 10 0 P 11 0 P 12 0 P 13 0 P 14 0 P 15 0 P 16 0 P 17 0 P 18 0 P 19 0 P 20 0 When the System PQL transitions to a PQL that crosses the user defined Output Squelching PQL threshold the SSU generates an alarm The alarm message for Alarm 14 Squelch indicates which port s are in alarm due to the PQL threshold being crossed In the example Alarm message below Port 20 of...

Page 194: ... alarm information for a given module to display all 2048 kHz Output module alarms including Alarm 14 Squelching Use the Alarm command to provision these alarms to be Ignored or to generate a Report Only Minor Alarm Major Alarm default or a Critical Alarm Refer to the SSU 2000 User s Guide for more information on using the Alarm command Table 8 10 Identifying Failed Ports from the Hex Digit Hex Va...

Page 195: ...Level Ok Major 2A10 07 Clk Selected Ok Major 2A10 08 VCXO Ok Major 2A10 09 PLL Ok Major 2A10 10 Configuration Ok Major 2A10 11 IntPortFlt Ok Major 2A10 13 Hdw Config Ok Major 2A10 14 Squelch Below Prov Major 00001 SSU Provisioning the Squelch Parameter To view or provision the squelch using ICS commands see OUTPUT on page 356 To provision the squelch using TL1 commands see TL1 Set Commands on page...

Page 196: ...odule Table 8 11 2048 kHz Output Module Status LED Indicators Indicator Color Description POWER Green On 5 vDC power available on the Output module Off 5 vDC not present on the module STATUS Green Amber On Green module functioning correctly Blinking Amber Output module is downloading firmware On Amber Output module failure SOURCE A Green Amber On Green Clock A in slot 1 is the selected source cloc...

Page 197: ...is the selected source clock The module is in an Expansion shelf On Amber Faulty or missing Expansion clock Off Expansion clock is ignored or good and not selected OUTPUT FAULT Amber On Module has detected one or more faulty outputs Off All output signals are good Table 8 12 2048 kHz Output Module Specifications Performance Characteristic Specification Frequency 2048 kHz Waveshape Per ITU T G 703 ...

Page 198: ...les are installed and the frequency is changed on one module the redundant module turns its output off changes to the new frequency and locking in phase with it and then turns its output Provisioning Output Frequencies You use software commands to set the frequency of each port on the RS 422 Output module Commands are available in both ICS and TL 1 modes To provision the output frequency using ICS...

Page 199: ...me SSU Module Name Output RS 422 OUT STATUS Clk Clk Stat Port Status 1 1 1 1 1 1 1 1 1 1 2 Loc Type Sta Sel A B C D Redt Pql 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 2A10 Ok A Y Y N Y 4 S S S S S OUTPUT SETUP Loc Type ZS MinClk Bypass 2A10 NA ACQ Off Output fault action Leave On Squelch Level P 1 3 P 2 3 P 3 3 P 4 3 P 5 3 P 6 0 P 7 0 P 8 0 P 9 0 P 10 0 P 11 0 P 12 0 P 13 0 P 14 0 P 15 0 P 16 0 P 17...

Page 200: ... corresponding to the 5 in Digit 2 16 corresponding to the 1 in Digit 4 and 17 through 20 corresponding to the F in Digit 5 Use the Alarm command to display the alarm information for a given module the display includes all RS 422 Output module alarms including Alarm 14 Squelching Use the Alarm command to provision these alarms to Ignore Report Only Minor Alarm Major Alarm default or a Critical Ala...

Page 201: ...ajor 2A10 04 Clk C Ok Major 2A10 05 Clk D Ok Major 2A10 06 Clk Selected Ok Major 2A10 07 VCXO Ok Major 2A10 08 PLL Ok Major 2A10 09 PortFlt Active Ok Major SSU Provisioning the Squelch Parameter To view or provision the squelch using ICS commands see OUTPUT on page 356 To provision the squelch using TL1 commands see TL1 Set Commands on page 304 Functional Block Diagram A simplified block diagram o...

Page 202: ...14 RS 422 Output Module Status LED Indicators Indicator Color Description POWER Green On 5 vDC power available on the Output module Off 5 vDC not present on the module STATUS Green Amber On Green Output module functioning correctly Blinking Amber Output module is downloading firmware On Amber Output module failure SOURCE A Green Amber On Green Clock A in slot 1 is the selected source clock On Ambe...

Page 203: ...clock The module is in an Expansion shelf On Amber Faulty or missing Expansion clock Off Expansion clock is ignored or good and not selected OUTPUT FAULT Amber On Module has detected one or more faulty outputs Off All output signals are good Table 8 15 RS 422 Output Module Performance Specifications Performance Characteristic Specification Frequency 8 kHz to 4096 kHz in 8 kHz increments Format lev...

Page 204: ...mer provides 3R Re shape Re amplify and Re time for the DS1 signal to a client Network Element When the LRU receives a DS1 data stream it re times the data with the transmit clock signal The clock signal is inserted into the DS1 line route between two DS1 path terminating elements Side one is the direction in which timing is applied Side 1 contains the DS1 line performance reporting and AIS genera...

Page 205: ...LRU Figure 8 16 Recommended Installation Schematic for the LRU Functional Overview The Line Re timing Module LRM consists of the following functional blocks Power input regulation Microcontroller unit Memory FLASH and RAM LED indicators module and port status Figure 8 17 is a block diagram of the DS1 LRU module ...

Page 206: ...U The micro controller unit MCU supports the Motorola Serial Peripheral Interface SPI protocol and performs interface functions with the other boards in the shelf via the SPI bus configuration of the LRM and monitoring The SPI allows module provisioning and generates events based on module status clock reference status and port status An internal MCU one shot watchdog timer monitors the MCU for ac...

Page 207: ...mory used to store the program code and configuration information for the FPGA Status Indicators Eight LEDs on the front panel of the module show the current operating status of the module The front panel LEDs are shown in Figure 8 18 and are described in Table 8 16 Figure 8 18 Front Panel of the DS1 LRU Four Port Module Table 8 16 DS1 LRU Module Status LED Indicators Indicator Color Description P...

Page 208: ...e 8 19 Using only the specified slots allows you to maintain redundant configuration options on other modules PORT 1 2 3 and 4 Green Amber On Green Selected On Amber Not good and ignored Off Ignored or good and not selected FAULT CTA Green Amber On Green CTA connected On Amber CTA not connected or CTA mismatch Off CTA not connected and alarm set to ignore FAULT REF Green Amber On Green Clock refer...

Page 209: ...he plastic card guides of the selected slot 2 Slide the module into the chassis until it seats fully into its rear panel edge connector 3 Tighten the captive screws located at the top and bottom of the module front panel Caution To avoid possible damage or intermittent failure ensure that you have completely inserted the module into the shelf and that you have securely tightened the captive screws...

Page 210: ...slots allows you to maintain redundant configuration options on other modules Figure 8 20 SDU 2000 Recommended Slots for LRM Installation Use the following steps to install a Line Re timing Module in an SDU 2000 1 Align the module card edges with the plastic card guides of the selected slot 2 Slide the module into the chassis until it seats fully into the edge connector Note Modules can be removed...

Page 211: ...e CTA and to the adapter panel using the appropriate cable Connectors J10 through J18 on the rear panel are labeled I O 1 through I O 9 each connector is associated with a specific I O plug in module slot Symmetricom recommends using connectors J13 through J16 which correspond to module slots A6 through A9 respectively see Figure 8 21 Caution To avoid possible damage or intermittent failure ensure...

Page 212: ...A I O connector pin functions and to Figure 8 23 for pin orientation 1 Remove the two screws on each I O connector that a CTA is to be installed on 2 Install CTA connectors on all outputs corresponding to installed LRMs 3 Tighten all CTA connector screws securely 4 Connect 50 pin Micro D output cables as required for your application Caution To avoid possible electro static discharge problems afte...

Page 213: ...ough the CTA and to the adapter panel using the appropriate cable Connectors J1 through J14 are labeled OUT 1 through OUT 14 and each connector is associated with a specific I O plug in module slot Symmetricom recommends using connectors J5 through J12 which correspond to module slots A5 through A12 respectively see Figure 8 22 Figure 8 22 Installing the Cut Through Assembly in the SDU 2000 Use th...

Page 214: ...nnected 2 3R ITIP 1 3R ITIP 1 27 3R IRING 1 3R IRING 1 3 Not Connected Not Connected 28 Not Connected Not Connected 4 3R OTIP 1 3R OTIP 1 29 3R ORING 1 3R ORING 1 5 2R ITIP 1 2R ITIP 1 30 2R IRING 1 2R IRING 1 6 2R OTIP 1 2R OTIP 1 31 2R ORING 1 2R ORING 1 7 RELAY SINK PORT 1 Not Connected 32 RELAY SINK PORT 2 Not Connected 8 3R ITIP 2 3R ITIP 2 33 3R IRING 2 3R IRING 2 9 3R OTIP 2 3R OTIP 2 34 3R...

Page 215: ...ire wrap pins see Figure 8 24 21 2R ITIP 4 2R ITIP 4 46 2R IRING 4 2R IRING 4 22 2R OTIP 4 2R OTIP 4 47 2R ORING 4 2R ORING 4 23 Not Connected Not Connected 48 DO NOT CONNECT Not Connected 24 CTA 2 4 PORT Not Connected 49 5vDC Not Connected 25 FRAME GROUND Not Connected 50 FRAME GROUND Not Connected Note The label must be installed before you make the wire wrap connections Table 8 17 SSU 2000 and ...

Page 216: ... groups 3 Carefully push the label over the pins until it is flush with the panel The label is secured in place by the physical wire wrap connections and is not glued to the panel Figure 8 24 Wire wrap Identification Overlay Specifications Table 8 9 lists specifications for the Line Re timing Module Table 8 18 Line Re timing Module Specifications Performance Characteristic Specification Power 38 v...

Page 217: ...elf 3 set the line build out to 399 feet and set the slip error threshold to 6 LRM 3A8 2 ENABLE then press Enter LRM 3A8 2 LBO 399 then press Enter LRM 3A8 2 SLIP 6 then press Enter SET PRMTR LRM S3A8 2 ON 399 6 The following ICS commands enable port 3 of an LRM in slot 11 of shelf 2 and enables a FAULT strategy LRM 2A11 3 FLT AIS then press Enter SET PRMTR LRM S2A11 3 ON AIS The following ICS com...

Page 218: ...shelf The Buffer module buffers the backplane and clock signals sent from the main shelf the modules are installed in slots 15 and 16 of the SDU 2000 Symmetricom recommends a minimum of one Buffer module in each expansion shelf a second Buffer module provides redundancy Status Indicators The Buffer module indicators LEDs are shown in Figure 8 25 and described in Table 8 19 Figure 8 25 Front Panel ...

Page 219: ...he Balun Output I O Adapter panel part number 22013068 002 0 uses Siemens 1 6 5 6 mm connectors The Balun Output I O Adapter panel part number 22013068 003 0 uses Siemens 1 0 2 3 mm connectors Figure 8 26 Balun Output I O Adapter Panel for Output Module Table 8 19 Buffer Module LED Indicators Indicator Color Description POWER Green On Receiving 5 vDC power Off Loss of 5 vDC power STATUS Green Ambe...

Page 220: ...o connect the Adapter panel to the shelf Figure 8 27 Output I O Adapter Panel DE9 Outputs High Density Wire Wrap Output Panels Symmetricom offers two high density wire wrap panels that can be used for any of the Output modules You need one Output cable see Adapter Accessories on page 221 for a list of available cables to connect the Adapter panel to the shelf Figure 8 28 illustrates the two high d...

Page 221: ...m long 805SCSI 0150 Cable 50 pin SCSI 1 1 m long 805SCSI 0250 Cable 50 pin SCSI 1 2 m long 805SCSI 0350 Cable 50 pin SCSI 1 3 m long 805SCSI 0450 Cable 50 pin SCSI 1 4 m long 805SCSI 0550 Cable 50 pin SCSI 1 5 m long 805SCSI 0650 Cable 50 pin SCSI 1 6 m long 805SCSI 0750 Cable 50 pin SCSI 1 7 m long 805SCSI 0850 Cable 50 pin SCSI 1 8 m long 805SCSI 0950 Cable 50 pin SCSI 1 9 m long 805SCSI 2050 Ca...

Page 222: ...Output Module Reference Data Output Adapter Panels 222 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 223: ...hapter describes how to configure the SSU 2000 into a variety of telecommunications configurations depending on which modules are installed In This Chapter Configuring a Conventional SSU TSG System Configuring a Primary Reference Source PRS System Configuring a Monitor Only System SSU 2000 Configuration Chart ...

Page 224: ...responding number of Output I O adapter panels and SCSI output cables Seven 1 0 inch wide filler panels and one 3 1 2 wide filler panel Configuring a Primary Reference Source PRS System In a Primary Reference Source PRS configuration the SSU 2000 meets the specifications defined in American National Standards Institute ANSI T1 101 1994 ANSI defines a Primary Reference Source as equipment that prov...

Page 225: ... Panel and I O cable One Output Adapter Panel and SCSI Output cable Seven 1 0 inch wide filler panels and one 3 1 2 wide filler panel Configuring a Monitor Only System In a monitor only configuration no output signals are required One of the inputs is designated as the reference and the SSU 2000 Clock module is locked directly to this signal All remaining input signals are then compared to the pha...

Page 226: ...U 2000 configured as a Subtending Synchronization Supply Unit SSU provides remote phase synchronization and holdover capabilities to telecom network elements such as digital switches Digital Access Crossover Systems DACS and channel banks for customers with very large equipment offices For further information on Subtending SSUs refer to Section 7 of Telcordia Specification GR 378 CORE The Subtendi...

Page 227: ...e proper DS0 phase alignment throughout the office If both CC reference inputs fail the shelf provides Stratum 3E holdover stability If both 3E Clock modules fail the Subtending SSU uses the CC reference input for clock bypass operation Input Reference Signals The Subtending SSU configuration requires at least one CC input signal for phase alignment of the CC output signals The selected CC input p...

Page 228: ...s required when starting the Subtending mode in order to align the phase of the CC outputs Selecting Input References and Switching References In the Subtending mode the unit selects the highest priority valid CC input available If the selected input is lost the unit switches to any alternate CC input as specified by priority assignments the phase and frequency of the CC outputs follow the new ref...

Page 229: ...able the Subtending mode For additional information on general syntax and usage refer to Appendix B Communications Protocol OPERMODE This command allows you to view and change the operating mode of the SSU 2000 Level 0 Not applicable Level 1 Not applicable Level 2 Not applicable Level 3 OPERMODE SUBTENDING NORMAL If you do not specify a parameter the system displays the current mode SUBTENDING Set...

Page 230: ... 9 1 Required Hardware The Subtending SSU mode requires the following modules in the shelf CC Input module CC Output module All other available modules can be used in the Subtending SSU mode The shelf must contain the appropriate Clock module s Communications module and Input and Output modules Table 9 1 Minimum Software Versions for Subtending Operation Module Minimum Revision Level Communication...

Page 231: ...The system prompt appears 2 Type opermode normal and press the Enter key The system responds with 2002 08 15 T15 57 56Z ID SSU2000 Name SSU_2000 The SSU2000 is in Normal Mode 3 Type bye and press the Enter key to log off No hardware changes are necessary Table 9 2 Files Required for Upgrading the Firmware Item Number to be Upgraded Description File for Module Firmware Upgrade File for Module PLD F...

Page 232: ... 5 shows the SDU 2000 Synchronization Distribution Unit output expansion shelf used with the SSU 2000 Table 9 3 contains a listing of all SSU 2000 components provides the associated Symmetricom part numbers and provides other configuration data required to procure a custom system Figure 9 4 SSU 2000 I O Adapter Panels I O Adapter for 3 Port DS1 or E1 Input Module I O Adapter for 1 Port DS1 or E1 I...

Page 233: ...l and 8 Filler panels including one wide panel If an Expansion shelf SDU 2000 is not installed SSU Expansion Terminator part number 12013049 000 0 must be installed on J8 on the SSU 2000 chassis Otherwise the terminator must be installed on the last Expansion shelf in the system 2 Bracket rack ear 19 00413102 000 1 Two each provided with the main shelf 3 Bracket rack ear 23 2 each required 0041302...

Page 234: ...bling 8 3 Port DS1 Input Module 23413013 002 0 1 Accepts up to 3 DS1 or Clock signals 2 Requires use of 3 Port I O adapter one per 3 Port Input module 9 1 Port DS1 Input Module 23413013 001 0 1 Accepts one DS1 or Clock signal 2 Requires use of 4 Port I O Adapter one adapter can handle up to four 1 port DS1 or ES1 Input modules 10 3 Port E1 Input Module 23413014 002 0 1 Any combination of three G 7...

Page 235: ...ls 50 and 75 Ω termination for 2 048 MHz or sine wave signals 4 Includes 1 m SCSI cable for connection to SSU 2000 16 3 Port SSU I O Input Adapter Panel 22013066 003 0 1 Use with 3 port DS1 or E1 Input module 2 Each port has DE9 and Siemens 1 0 2 3 mm connectors switch selectable and selectable termination 50 75 100 120 or 3 3 kΩ 3 Typically 100 Ω termination for DS1 signals 120 Ω for E1 signals 5...

Page 236: ...mens 1 0 2 3 mm connectors switch selectable and selectable termination 50 75 100 120 or 3 3 kΩ 3 Typically 100 Ω termination for DS1 signals 120 Ω for E1 signals 50 and 75 Ω termination for 2 048 MHz or sine wave signals 4 Includes SCSI cable for connection to SSU 2000 20 SCSI Cable 1 m 805SCSI 0050 Connects I O Adapter to rear panel of the shelf Output Module Output I O Adapter Panels and Output...

Page 237: ...uires one Output I O adapter panel 4 Each two redundant Output modules require one Output Summer connector part number 22013070 000 0 24 Composite Clock Output Module 23413158 000 0 1 Minimum of one Output module of any type required 2 Each Output module provides 20 single byte and polarity phase aligned independently configurable duty cycle 50 50 or 62 5 37 5 and phase delay from 0 to 3 4 msec CC...

Page 238: ...2 Requires separate I O cable 50 pin SCSI see item 30 3 Optional ears for 21 inch or 23 inch rack 29 Adapter 9 pin to wire wrap 22013085 000 0 One DE9 I O connector to wire wrap adapter for each DE9 I O connector optional 30 I O Cable 50 pin 1 m I O Cable 50 pin 1 1 m I O Cable 50 pin 1 2 m I O Cable 50 pin 1 3 m I O Cable 50 pin 1 4 m I O Cable 50 pin 1 5 m I O Cable 50 pin 1 6 m I O Cable 50 pin...

Page 239: ... termination plug shipped with Main shelf 34 Buffer Module 25413022 000 0 1 or 2 required per SDU 2000 expansion shelf install in slots A15 and A16 Blank Filler Panels 35 Clock Module Filler Panel 3 2 in wide 10913022 000 0 Filler panels are required in all unused clock slots 36 Standard Module Filler Panel 1 in wide 10913021 000 0 Filler panels are required in all unused SSU 2000 and SDU 2000 I O...

Page 240: ...Hardware Configuration Guide SSU 2000 Configuration Chart 240 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 241: ...s Guide 241 1 1 Appendix A Alarms and Events This appendix describes the alarms and events that the SSU 2000 generates and provides some troubleshooting information for dealing with these alarms and events In This Appendix Alarm Messages Event Messages ...

Page 242: ...e an event not every event is an alarm For example a login is recorded as an event but is not considered to be an alarm In this case no action is required by the user The following sections list all alarm and event messages by their designated numbers a description of each and any corrective action to clear the alarm or condition if necessary Figure A 1 shows the structure of a typical Alarm messa...

Page 243: ...k PQL value When the Input reference recovers the alarm clears Frequency mode degradation 2 Minor Ok Holdover Invalid reference input causes Holdover Verify input setup Frequency control parameters within specification 3 Major Ok Out of Range The reference input frequency is over the clock pull in range Output frequency status within specification 4 Minor Ok Degraded Output exceeded pull in range ...

Page 244: ...inor Ok Not Locked Only available with Stratum 2E Rubidium module If alarm persists re seat module Status of the hardware configuration 9 Minor Ok Failed Call Symmetricom Global Services Return to factory Table A 1 Clock Module Alarm Messages Continued Alarm Description Alarm Number Default Alarm Level Status Messages Description Corrective Action ...

Page 245: ... that the fuse for Power A is properly installed and not OPEN Verify that Power Bus A is providing 48 vDC to the unit If no power is connected to the Power A input and there is no plan to connect power issue the command AL 10 1 IG at the prompt Status of Power B 3 Minor Ok Lost Verify that the fuse for Power B is properly installed and not OPEN Verify that Power Bus B is providing 48 vDC to the un...

Page 246: ...signal is good CRC error fault status 4 Minor Ok Active Verify port CRC is off Verify signal is good MTIE fault status limit 1 5 Minor Ok Exceeded MTIE limit 1 has been exceeded MTIE fault status limit 2 6 Minor Ok Exceeded MTIE limit 2 has been exceeded Received PQL below provisioned PQL status 7 Minor Ok Below Prov Received SSM PQL is below provisioned PQL No SSM status 8 Minor Ok Lost Set port ...

Page 247: ...ntenna is placed correctly Antenna condition fault 3 Minor Ok Shorted Ring out the cable to ensure that the center conductor is not shorted to the sleeve then verify that The antenna cable is connected properly The cable and connectors are not damaged GPS Engine hardware fault 4 Minor Ok Bad Reseat module If problem persists call Symmetricom Global Services Engine system fault 5 Minor Ok Bad If al...

Page 248: ... Symmetricom Global Services Composite Clock Input Module Loss of Signal LOS 00 Major Ok Active No CC signal Bipolar Violation BPV fault 03 Major Ok Active Invalid BPV density Hardware configuration fault 05 Major Ok Failed Call Symmetricom Global Services Return to factory Clock PLL fault 06 Major Ok Not Locked One of the clock PLLs is not locked Phase hardware fault 07 Major Ok Bad The phase mea...

Page 249: ...port Ok Fault Ignore Report Minor Change frame type D4 ESF Side 1 Bipolar violation signal fault status 3 Report Ok Fault Ignore Report Minor Verify port ZS is on Verify signal is good Side 1 Slip signal fault status 4 Report Ok Fault Ignore Report Minor Accumulated slip value exceeded threshold setting Side 2 Loss of signal fault status 5 Report Ok Fault Ignore Report Verify signal on side 2 is c...

Page 250: ...roblems Loss of clock source C 4 Major Ok Lost Reference signal is in LOS and both clocks have been removed or are in warm up Clock below minimum clock level 5 Major Ok Below Clock A or B is below output module setting Clock not selected for output 6 Major Selected Not Selected No clocks no output Output port fault displayed as hex value 7 Major Ok Active Indicates which output port is in fault ty...

Page 251: ... in SDU Loss of backup clock Check cable Clock below minimum clock level 6 Major Ok Below Clock A or B is below output module setting Clock not selected for output 7 Major Selected Not Selected No clocks no output VCXO status 8 Major Ok Lost VCXO problems re seat or replace module Output PLL status 9 Major Ok Lost No clocks or VCXO Re seat and check clocks Configuration status 10 Major Ok Failed R...

Page 252: ... warm up Loss of clock source D 5 Major Ok Lost Only in SDU Loss of backup clock Check cable Clock below minimum clock level 6 Major Ok Below Clock A or B is below output module setting Clock not selected for output 7 Major Selected Not Selected No clocks no output VCXO status 8 Major Ok Lost VCXO problems re seat or replace module Output PLL status 9 Major Ok Lost No clocks or VCXO Re seat and ch...

Page 253: ...her problems Loss of clock source C 4 Major Ok Lost Reference signal is in LOS and both clocks have been removed or are in warm up Loss of clock source D 5 Major Ok Lost Only in SDU Loss of backup clock Check cable No clock selected 6 Major Ok Below No clocks or no clock output VCXO status 7 Major Selected Not selected VCXO problems re seat or replace module Output PLL status 8 Major Ok Lost No cl...

Page 254: ... loop Soft PLL Acquire Lock Hold 145 Software Phase Lock Loop in Acquire Lock or Holdover status Inp Select 1A04 02 146 An Input has been selected as Reference Output Pql 2 PQL value 1 to 5 ST2 or 8 ST3 147 The Output PQL has been set to the value shown CLK C Sel 1A04 02 148 A reference Input has been selected as an output source Warmup Chg 1800 sec COML 194 The user has changed the Oscillator war...

Page 255: ...The Comms module has been disabled Restart in 5 seconds COML 133 Module reboot Warm boot Log In JAY COML level 2 144 User at indicated level has logged in on indicated port Log Out JOHN COML level 2 145 User at indicated level has logged out from indicated port Auto Out SMITH COML level 3 146 System automatically logging out a user Msg HELLO USER COML 147 Message sent from a user Not Acknowledged ...

Page 256: ...er Administrator modified user database Del User TESTUSER COML 195 Administrator deleted user from user database Pql Table DS1 pql 5 ST2 COML 196 PQL database has been modified Pql Table Dflt COML 197 PQL database has been set to factory defaults Unit Name AUSTIN COML 198 The SSU name has been changed NTP Peer Add 192 5 41 40 Client COML 199 A NTP client was added at the IP address shown NTP Peer ...

Page 257: ...31 The Input module has been enabled Disable Input Module COML 132 The Input module has been disabled Restart in 5 seconds COML 133 Module re boot Cannot Enable Input Module COML 134 Internal firmware conflict Restart module if the problem persists call Symmetricom Global Services Zero Phase B COML 144 User has forced the phase to be cleared Rcv Pql Chg 3 145 Input has received a different PQL Pha...

Page 258: ...k A 800 210 The frequency clear limit settings have been changed MTIE Clr Limit T100 L1 500 COML 211 The MTIE error limit settings have been changed MTIE Limit DS1 COML Setting 212 The MTIE clear limit settings have been changed PBO Report COML Disable Event Report None 213 Phase Build out system response has been changed to the indicated setting Freq Tau Clk A 400 COML 214 The frequency TAU limit...

Page 259: ...sitioning mode has been set Pos Set by Rec Information Locked COML 200 User specified GPS positioning mode has been set to Calc and the position has been recalculated and locked in Engine Set Time GPS 201 System time has been set to UTC by the GPS module PDOP 2 COML 203 User has changed the PDOP on the GPS input module to the setting shown CDMA FREQ 882 750 MHz COML 204 User has changed the CDMA f...

Page 260: ...as changed the BPV clear threshold IoName Chg 224 User has changed the port name Err Delay 0 10 sec COML 251 User has changed the alarm delay time Alm Level 2 Maj COML 252 User has changed the alarm level Elevate Time 86400 sec COML 253 User has changed the alarm elevation time Setup Save COML 254 User defaults have been set and saved Table A 9 LRM Event Messages Event Message Event Event Descript...

Page 261: ...t Module COML 131 Output module has been enabled Disable Output Module COML 132 Output module has been disabled Restart in 5 seconds COML 133 Module re boot Cannot Enable Output Module COML 144 Output module cannot be enabled Frame Mode ESF COML 193 Output framing type change ZS On COML 194 User changed output framing type DS1 LEN 0 5 len 133 ft COML 195 User changed output line length DS1 only CR...

Page 262: ...ult recovery strategy has been changed Alm Level 0 Maj COML 252 An alarm level change Elevate Time 86400 sec COML 253 An alarm elevation time change Setup User Default COML 254 User defaults have been set and saved Table A 10 Output Module Event Messages Continued Event Message Event Event Description ...

Page 263: ...formation about the Transaction Language One TL1 Interactive Command Set ICS NTP Network Timing Protocol and Simple Network Management Protocol SNMP control languages that are used to communicate with the SSU 2000 In This Appendix SSU 2000 Control Languages TL1 Command Interface Interactive Command Set NTP Support SNMP Protocol ...

Page 264: ...Command Set ICS control language also called the ASCII command set can be used to control the SSU 2000 from a terminal connected to one of the SSU 2000 EIA 232 serial ports SNMP The Simple Network Management Protocol SNMP protocol is based on a client server query response mode and is supported by Ethernet only There are six main executables software versions available for the SSU 2000 as shown in...

Page 265: ...Name Software Revision Level Hardware Revision level 23413013 001 0 DS1 1 Port Input Module B B 23413013 002 0 DS1 3 Port Input Module B B 23413014 001 0 E1 1 Port Input Module B B 23413014 002 0 E1 3 Port Input Module B B 23413019 000 0 GPS Input Module A A 23413279 000 0 CC Input Module A A 23413016 000 0 Clock Module STR 2E B A 23413015 000 0 Clock Module STR 3E B A 23413015 001 0 Clock Module ...

Page 266: ...sword 2 Set port A B or L to TL1 mode For example to set the local port COML to TL1 mode at the system prompt type COMM L MODE TL1 The communications mode settings for the COMM A and COMM B ports located on the rear panel are stored in non volatile RAM and remain in effect even after restarting the SSU 2000 Table B 2 Communications Module Software Versions Part Number Version TL1 ICS NTP SNMP v2 S...

Page 267: ...ers for the four types of operations application messages Input Command Message This message determines the action that the SSU 2000 will take For a detailed description of input command messages and conventions see Input Command Message Conventions on page 268 In Process Acknowledgment The in process acknowledgment IP response message is sent in response to a command that the SSU 2000 is unable t...

Page 268: ...line terminator and may be used separately or combined The ASCII cancel code character hex 18 can be used to cancel a partially sent command and clear the input buffer Input Command Message Conventions Command messages entered and sent by the user determine the action that the SSU 2000 will take Command messages are input messages and are always followed by an acknowledgment or output response mes...

Page 269: ...o indicate aid1 and aid2 Use a double ampersand to indicate a range from aid1 to aid2 The y or z part of the aid also uses the ampersand ctag Correlation Tag field is a six digit alpha numeric message identifier code that is received with the command and returned in the response for correlation of message and response within the operating system The ctag can be any combination of six alpha numeric...

Page 270: ...00 in the 24 hour format HH MM SS IP is the in process response message that the SSU 2000 sends in response to a command only if the SSU is unable to respond to the command within two seconds The SSU sends the requested response in full when the data is available ctag Correlation Tag field is a six digit alpha numeric message identifier code that is received with the command and returned in the re...

Page 271: ...he complied message response message is the response message The response message line for complied messages always begins with 3 spaces followed by the response message enclosed in quotation marks and terminated by cr lf Multiple lines of response messages are allowed Each command response is terminated by a semicolon following the last cr lf DENY Output Response Message Conventions The DENY resp...

Page 272: ...and is one of the following defined codes other error codes may be defined and used if required Autonomous Report Conventions The SSU 2000 sends autonomous reports in response to a detected alarm condition or status change You can select one of two formats for autonomous messages GR 831 or GR 833 Use the RTRV PRMTR TL1FORMAT command to select which format is generated These reports are similar to ...

Page 273: ...ent REPT Report indicates an autonomous report AIDTYPE indicates the cause for the report such as input signal fault INP or T1 or module hardware faults EQPT response message is the response message The format for the response message line is aid ntfcncde condtype srveff ocrdat ocrtm condscr cr lf where ntfcncde Notification Code is an optional field that further describes the alarm or event in an...

Page 274: ...n cleared SC indicates that a standing condition is raised TC indicates a transition of a condition If any alarm listed in Appendix A Alarms and Events is set to Not Alarmed NA then condeff is set to SC when the alarm becomes active and CL when the alarm is cleared Other terms are identified in this section User Access Levels The SSU 2000 system software allows you to set up a list of users with o...

Page 275: ...ls 0 through 1 functions and can read or set all installation functions Supervisor 3 Supervisor level users can execute all commands at levels 0 through 2 and can read or set all functions Administrator 4 Administrator level users can execute all levels of commands they can view and set software configurations they can also add delete or modify the user table or log off any user from any port Tabl...

Page 276: ... or more additional message lines are returned with the following format aid svcdat svctim mandat userdat cr lf aid cnt revstr cr lf where svcdat in service date for the module in the format YY MM DD year month day svctim in service time as determined from when the module was installed in the system in the format HH MM SS hours minutes seconds mandat manufacture date of YY MM DD reported by the mo...

Page 277: ...CQ acquiring signal RTRV DATA GPS tid aid ctag Valid aid code S1A3 or S1A5 for a GPS module This command returns the current tracking data for the specified GPS input If the input specified is not a GPS module a DENY response is returned The format for the valid response message is up to 8 lines in this format aid chan prn snr status cr lf Each line displays information for one of the satellites c...

Page 278: ...hy azimuth and elevation calculated orientation of the satellite RTRV DATA FREQ tid aid ctag Valid aid code ALL S1Ay z This command returns the current frequency measurements for the specified input s The format of the response message is aid freqa freqb cr lf where freqa frequency of the port versus clock A freqb frequency of the port versus clock B RTRV DATA INPUT tid aid ctag Valid aid code ALL...

Page 279: ...es how much time integer in seconds since the last BPV Clear command was issued 60srate BPV error rate float value per second in a 60 second window 24hrate BPV error rate float value per second in an 86400 second window es indicates integer that the BPV accumulates BPV Errored Seconds BPV ES when any seconds have a BPV error ses indicates integer that the BPV accumulates BPV Severely Errored Secon...

Page 280: ...a given in seconds The maximum tmper values for MTIE are 0 05 0 1 1 10 100 1000 10000 and 100000 monval data value for the time period given in nanoseconds start start time specifies the start date and time for data in the format MM DD HH MM If the date is null but followed by a time the command defaults to the current date If the start time is null but preceded by a date the command defaults to t...

Page 281: ...of day s of MTIE history to be retrieved from the current day day 0 If no clock source CLK A CLK B is specified the current output clock will be used The response will be the complied message followed by the requested data The format for each response message line is aid ocrdat ocrtm MTIE clksrc monval1 monval2 monval8 cr lf where ocrdat and ocrtm beginning date and time the data was collected clk...

Page 282: ...the start date and time for data in the format MM DD HH MM If the date is null but followed by a time the command defaults to the current date If the start time is null but preceded by a date the command defaults to the current time If the start date and time are null the command defaults to the start of the data The comma must be present to indicate a null start time stop stop time specifies the ...

Page 283: ...data value for the time period given in nanoseconds The maximum tmper values for TDEV are 0 1 0 3 0 6 1 0 3 0 6 0 10 0 30 0 60 0 100 0 300 0 600 0 1000 0 3000 0 6000 0 and 10000 0 start start time specifies the start date and time for data in the format MM DD HH MM If the date is null but followed by a time the command defaults to the current date If the start time is null but preceded by a date t...

Page 284: ...be retrieved from the current day day 0 If no clock source CLK A CLK B is specified the current output clock will be used The response will be the complied message followed by the requested data The format for each response message line is aid ocrdat ocrtm TDEV clksrc monval1 monval16 cr lf The ocrdat and ocrtm is the beginning date and time the data was collected The clksrc is the clock used for ...

Page 285: ...e CR MJ MN CL NA condtype Condition Type event number srveff service affecting flag SA service affecting NSA non service affecting ocrdat occurrence date ocrtm occurrence time condstr condition description string start start time specifies the start date and time for data in the format MM DD HH MM If the date is null but followed by a time the command defaults to the current date If the start time...

Page 286: ...e null the command defaults to the start of the data The comma must be present to indicate a null start time stop stop time specifies the stop date and time for data in the format MM DD HH MM If the date is null but followed by a time the command defaults to the current date If the stop time is null but preceded by a date the command defaults to the current time If the stop date and time is null t...

Page 287: ...position When the positioning mode is set to Calc the elevation mask setting for positioning is sent to the engine the engine is set to positioning mode and 10 positions are averaged and compared to the configuration setting If there is a greater than 300 meter error the unit recalculates the position based on the averaging count If there is not such an error the unit uses the stored position The ...

Page 288: ...helf are returned in the following format aid desc hw_part hw_rev hw_serial sw_part sw_rev cr lf where desc is the text name of the module hw_part is the hardware part number hw_rev is the hardware revision level hw_serial is the hardware serial number sw_part field is the software part number i e 141xxxxx xxx x sw_rev field is the software revision level The aid reported is the shelf address The ...

Page 289: ...the erred and cleared second thresholds for the signal faults The format for each response message line is aid prmtr errcnt clcnt cr lf where prmtr signal fault LOS AIS OOF BPV or CRC errcnt setting for the error threshold clcnt setting for the clear threshold RTRV PRMTR ALARM tid aid ctag Valid AID codes SxAy z This command returns the alarm settings for the specified module or ALL alarms if no a...

Page 290: ...se compensation 1 through 7 When no port is specified by the aid then the response is four lines as follows aid mode level bypass cr lf aid pstate1 pstate2 pstate3 pstate20 cr lf aid duty1 duty2 duty3 duty20 cr lf aid pcomp1 pcomp2 pcomp3 pcomp20 cr lf Line 1 contains aid module access identifier mode CC level minimum clock level to enable outputs on the module WARM ACQ LOCK bypass allow Clock C s...

Page 291: ...s for the clock designated by the aid or both clocks for ALL The format for each response message line is aid warmup mintau maxtau clkar cr lf where warmup warmup delay time mintau starting time constant maxtau final time constant value in seconds for the clock clkar current setting for the clock Auto Return mode OFF ON Table B 5 TL1 Retrieve Commands Continued Command Description ...

Page 292: ...value 0 1 16 where 0 disabled If the reference clock PQL exceeds this value then the output is turned off When no port is specified by the aid then the response is two lines as follows aid mode level bypass fltmode cr lf aid pstate1 pstate2 pstate20 cr lf aid squelch1 squelch2 squelch20 cr lf where Line 1 contains mode CLK level WARM ACQ LOCK for the clock level where outputs are turned on bypass ...

Page 293: ...s aid tout cr lf RTRV PRMTR ELTIME tid aid ctag Valid aid code SxAy This command returns the time for alarm elevation from 60 seconds to 500 000 seconds A setting of 0 zero means no elevation for the alarm When an alarm has been at MINOR or MAJOR level continuously for elevtime seconds then it is elevated to the next level Delay may be set for each module or ALL modules and applies to all alarms c...

Page 294: ...ponse message is aid pstate pri pql mode ssm zs crc gain csflt bit cr lf where aid port aid pstate port enabled state ON OFF pri priority 1 highest through 10 lowest or MON for monitor pql provisioned priority quality level of 1 through 16 mode framing type or clock frequency in MHz ESF D4 CCS CAS 1 1 544 2 048 5 10 ssm zs crc and gain ON OFF csflt HI LO OFF NA bit bit number 4 through 8 of the Ti...

Page 295: ...here aid of the port enable ON OFF to enable or disable a port lbo Line Build Out length setting of 133 266 399 533 655 feet for DS1 outputs slip slip error threshold in any 24 hour period flt AIS SQUELCH It defines side 1 output generation when the LRU has a loss of signal on side 1 input loss of all reference sources PLL unlock or if the input signal s frequency has exceeded the LRU s ability to...

Page 296: ...always four lines returned for each input port one for each limit RTRV PRMTR NTP tid ctag Valid aid code None This command returns the current network timing protocol settings for the unit The format of the response message is ip1 mode interval cr lf ip2 mode interval cr lf ip3 mode interval cr lf Where ip is the server ip used by the client or broadcast client or broadcast server Mode is the oper...

Page 297: ...he port output is disabled Zero indicates the function is disabled When the aid does not specify a port the response is aid mode bypass zs cr lf aid signal1 signal2 signal20 cr lf aid pstate1 pstate2 pstate20 cr lf aid squelch1 squelch2 squelch20 cr lf where Line 1 contains aid aid for the module mode CAS bypass ON OFF for allowing Clock C selection zs zero suppression OFF ON Line 2 contains aid a...

Page 298: ...f 133 266 399 533 655 for DS1 outputs When the aid does not specify a port the response is aid mode level bypass zs crc bit cr lf aid pstate1 pstate2 pstate20 cr lf aid len1 len2 len3 len20 cr lf Line 1 contains aid module access identifier mode outputs signal mode ESF D4 CCS CAS level clock level WARM ACQ LOCK when outputs are turned on bypass allow Clock C selection ON OFF zs zero suppression ON...

Page 299: ...Valid aid code none This command returns the current SNMP mode The format for each response message line is mode trap_filter cr lf Values for mode are as follows ENA Enables SNMP operation in the system DIS Disables SNMP operation in the system Values for trap_filter are as follows ALM Only alarms cause Traps to be transmitted ALL All events and alarms cause the transmission of Traps RTRV PRMTR SN...

Page 300: ...s displayed RTRV PRMTR SNMPV3 MANAGER tid ctag Valid aid code none This command returns the SNMPv3 Manager list The format for each response message line is ip username cr lf where ip and username are the assigned SNMPv3 Manager IP address and username RTRV PRMTR TL1FORMAT tid ctag Valid aid code None This command returns the setting for the format of autonomous reports The format of the response ...

Page 301: ...mat for each response line is aid mstat mode tau pql cr lf where aid which clock module status is being displayed mstat module status OK SEL DIS FLT clock mode WARM ACQ LOCK HOLD tau current time constant in seconds for the clock control loop pql Stratum Level of the clock RTRV STATUS INPUT tid aid ctag Valid aid code ALL S1Ay z This command returns the condition current operating mode and reading...

Page 302: ...nctioning correctly CUT indicates that this port is in cut through mode and DIS indicates that this port is disabled and not in cut through mode frame D4 ESF NONE los ais lof bpv and slip are the current second error condition F OK where F indicates an error has occurred slipcount indicates the slips in a 24 hours period los_side2 the LOS of Side 2 is F OK where F indicates an error occurred RTRV ...

Page 303: ...ulted Multiple message lines are returned if aid specifies one or more output modules as follows aid mstat red clksrc pql cr lf aid p1 p2 p3 p20 cr lf where The first line contains the module aid mstat module status is OK DIS FLT where OK normal operation and DIS or FLT all outputs are turned off red NA SxAy where NA non redundant and SxAy redundant module aid clksrc clock generating the output CL...

Page 304: ...lid or the clock is not available for use or clock A R is on the DENY response is returned Empty fields leave parameters unchanged SET CLK AR tid ctag ar Valid aid code none The command sets the clock mode of returning or not returning after faults are cleared The ar parameter changes the current clock selection mode to ON OFF for revertive or non revertive operation Empty fields leave parameters ...

Page 305: ...t port is not a valid reference then the DENY response is returned SET MTIE MASK tid aid ctag mask Valid aid code ALL SxAy z This command will set the MTIE mask for the given input to predefined settings such that mask can be set to PRS DS1 G811 G823 The MTIE mask settings include both Limit 1 and Limit 2 and set and clear thresholds For user defined thresholds use the SET PRMTR MTIE command SET N...

Page 306: ...ay 0 100000 before reporting the condition for OOF BPV and CRC input errors When aid is set to ALL the specified parameters are set for all inputs SET PRMTR CCOUT tid aid ctag pstate mode level bypass duty pcomp Valid aid code ALL SxA y z pstate sets the output port ON OFF mode ignored level the condition where outputs are turned on WARM ACQ LOCK bypass allow Clock C selection ON OFF duty set duty...

Page 307: ...ER SET PRMTR ELTIME tid aid ctag elevtime Valid aid code SxAy This command sets the time for alarm elevation from 60 seconds to 500 000 seconds A setting of 0 zero means no elevation for the alarm When an alarm has been at MINOR or MAJOR level continuously for ELTIME seconds then it is elevated to the next level This may be set for each module or ALL modules and applies to all alarms created by th...

Page 308: ...m input HI LO OFF bit bit number 4 8 of the Time Slot 0 word used for the E1 SSM For DS1 input the bit value is ignored With an aid of ALL or null the specified parameters are set for all inputs Empty fields leave parameters unchanged If mode is set to a framed type then frequency is set to correct frequency for type DS1 1 544 or E1 2 048 SET PRMTR IP tid ctag addr mask gate Valid aid code None wh...

Page 309: ...ces PLL unlock or if the input signal s frequency has exceeded the LRU s ability to retime data SET PRMTR LRMCID tid aid ctag cid Valid aid code ALL SxA y z This command sets the LRM port circuit id CID CID is a 0 to 43 character string with all ASCII printable characters SET PRMTR MTIE tid aid ctag EL1 EL2 CL1 CL2 t10 t100 t1k t10k t100k Valid aid code ALL S1Ay z This command sets the input MTIE ...

Page 310: ...will be broadcast by the server The del mode deletes the specified ip from the list of peers up to 3 ip s can be assigned for all peer modes combined Clrall deletes all peer addresses If 3 ip s have been defined and a 4th ip is defined the system returns a DENY message you must delete one of the 3 ip s prior to adding the new ip SET PRMTR OUTE12048 tid aid ctag pstate bypass zs signal squelch Vali...

Page 311: ...PBO function The PBO event is displayed but the event is not stored in the COMM module event buffer NONE enables the PBO function The PBO event is neither displayed nor stored in the COMM module event buffer SET PRMTR SETUP tid aid ctag factory user save Valid aid code ALL SxA y z This command sets or saves the configuration of the specified module Factory restores the module configuration to fact...

Page 312: ... a username to delete the user from the table MOD requires a username a new password and new user level INIT requires no additional parmeters and clears all entries in the table SET PRMTR SNMPV3 MANAGER tid ctag mode ip username Valid aid code none This command allows changes to the SNMPv3 manager table entries mode ADD DEL MOD INIT where ADD requires an IP address and username DEL requires an IP ...

Page 313: ...eld is ignored Users cannot modify the authentication algorithm To change the authentication algorithm delete the user first and then add the user again using a different authentication algorithm INIT requires no additional parameters and clears all entries in the table SET PRMTR TL1FORMAT tid ctag mode Valid aid code none This command sets the format of autonomous messages mode GR831 GR833 where ...

Page 314: ... off the TL1 user and returns to security level 0 DISC MODULE tid aid ctag Valid aid code SxAy This command disconnects disables a module not a specific port EXIT tid ctag Valid aid code None This command logs off the user and returns an EIA 232 port to ASCII mode or disconnects an Ethernet session to end TL1 communication RMV MODULE tid aid ctag Valid aid code SxAy This command removes module con...

Page 315: ...Options within braces are separated by a pipe Brackets indicate that the enclosed information is optional Italics indicate variable options The variable xAy z z indicates the aid or access identifier This variable specifies the shelf and slot location for hardware components in this format xAy z z where x Shelf number of the unit 1 the SSU 2000 main shelf 2 5 the SDU 2000 expansion shelves numbere...

Page 316: ...uirement If the user list is empty and no passwords have been set for default users logon is not required and the software defaults to the Administrator user After a user name has been added or a password has been entered for the Administrator user a user name and logon password is required While communicating with the SSU 2000 using an EIA 232 C connection if the communications port requires a us...

Page 317: ...otes to uppercase Command Separator is a semicolon The interface responds to any input line terminator Possible terminators are CR LF or CRLF When the interface receives any of these terminators the input is terminated and the entered command line is processed The ICS interface uses the following single character commands executes the previous command if it is used as the first character on a line...

Page 318: ...port An EIA 232 C Telnet or Ethernet TL1 communications port Module selection follows these conventions Each module selection in a unit is defined as xAy where x Shelf number starting from 1 A Place holder indicating the slot separator y Slot number starting from 1 left to right defined by each shelf Port selection follows these conventions Each port of a module is addressed as xAy z where xAy sam...

Page 319: ...port TL1A Ethernet TL1 session one TL1B Ethernet TL1 session two The interface uses ISO 8601 Date and Time Format Date and Time format yyyy mm ddThh mm ss example 1998 02 19T11 03 03 Date format yyyy mm dd Time format Thh mm ss ICS Commands This section provides an alphabetical listing of all ICS commands For each command the section provides the following information Command name as it appears in...

Page 320: ...m identification a text description of the alarm the current status the current alarm level elevated alarms are indicated with an asterisk and the delay time for the alarm Example SSU_2000 alarm 1A2 2003 05 24T18 23 38Z ID SSU2000 Name SSU_2000 Input Alarm Status Level Elev Delay 1A02 00 Communication Ok Minor 5 sec 1A02 01 Mastership Ok Minor 30 sec 1A02 02 Power A Ok Minor Immed Level 2 Same as ...

Page 321: ...ay times are in seconds Valid delays are 0 to 86 400 seconds 1 day If the original value is set to 1 Immediate for this command delay time cannot be set by the user IGNORE Sets the alarm status level to IGNORE This means that no action is taken for an alarm condition REPORT Sets the alarm status level to REPORT This means that a report only message occurs for an alarm condition MINOR Sets the alar...

Page 322: ...nd to log off the system If passwords are enabled the logon header displays and you are prompted for a user name Level 2 Same as Level 1 operation Level 3 Same as Level 1 operation Level 4 Same as Level 1 operation Remarks This command implies that the operator has completed the session and wants to return the SSU 2000 to an Idle state Related LOGIN Restrictions None ...

Page 323: ... Concise setup information Minimum tau maximum tau Clk Freq clock switching method such as AutoReturn or Not input switching method AutoReturn On AutoSwitch On or AutoSwitch Off input selection mode Priority or PQL and Local Oscillator output is On or Off Detailed setup information Same as concise setup information with the following additions Freq Offset limit warm up time minimum tau limit and m...

Page 324: ...e manual holdover state SELECT Allows the operator to specify the clock reference Level 3 Same as Level 2 operation with the following additions CLK AR ON OFF CLK xAy WARMUP value CLK xAy MINTAU MAXTAU value Options are AR ON OFF Enables or disables the clock autoreturn mode see Input Section on page 30 for information on autoreturn WARMUP Sets the clock warm up time in seconds MINTAU Sets the min...

Page 325: ... Interactive Command Set CLS Use this command to clear the terminal screen Level 0 Not applicable Level 1 CLS Level 2 Same as Level 1 operation Level 3 Same as Level 1 operation Level 4 Same as Level 1 operation Remarks This command is for aesthetic purposes only ...

Page 326: ...se this option to change the setting for the port over which you are communicating If your security access level is Level 1 the setup changes are not stored in non volatile RAM Options are BAUD Sets the current baud rate setting Only the baud rates shown are valid ECHO Enables or disables character echo on the terminal EOL CR LF CRLF Sets the current End Of Line termination for output line CR Sets...

Page 327: ... are MODE ASCII TL1 Sets the current mode to either ASCII interactive or TL1 TIMEOUT Sets the communications port automatic logout time out value Values are in seconds NEVER disables automatic logout Level 3 Same as Level 2 operation Level 4 Same as Level 3 operation Remarks None Related None Restrictions BAUD ECHO AND EOL are only applicable to EIA 232 The communications port must be specified to...

Page 328: ...l number If shelf address is 1 5 it displays shelf description and shelf part number 254xxxxx xxx x Detailed information Includes all the concise information described above It also includes configured revisions if supported by module in service time if supported by module and the feature list if supported by module for example the COMM Module returns NTP and SNMP features If the xAy is 1 5 the sh...

Page 329: ...SSU_2000 CONFIG 2001 06 21T15 10 34Z ID SSU2000 Name JWANG Loc Name HW Part HW Rev Date Serial 1 SSU 2000 25413020 000 0 1A01 Clock Stratum 2E 23413016 000 0 A 30NOV99 990705398000615020 1A02 Communication 23413012 000 0 A 03NOV99 990705398000614573 1A03 Input GPS 23413019 000 0 A 18DEC99 1234567890005 1A05 Input GPS 23413019 000 0 A 29FEB00 990705398000728324 1A06 Input E1 3Port 23413014 002 0 B ...

Page 330: ... 20OCT00 1A07 Input DS1 3Port 14113013 000 0 B 04 20OCT00 1A08 Input DS1 1Port 14113013 000 0 B 04 20OCT00 1A09 Input DS1 3Port 14113013 000 0 B 04 20OCT00 1A10 Output DS1 14113017 000 0 A 06 19APR01 1A11 Output DS1 14113017 000 0 A 06 19APR01 1A12 Clock Stratum 3E 14113015 000 0 B 06 20JUN01 2A01 Output E1 14113017 000 0 A 06 19APR01 2A02 Output E1 14113017 000 0 A 06 19APR01 2A03 Output DS1 1411...

Page 331: ...icable Level 1 DATE Use this command to view the current date set within the unit The date format that displays is yyyy mm dd Level 2 Same as Level 1 operation Level 3 Same as Level 2 operation with the following additions DATE yyyy mm dd Use this option to set the current date Level 4 Same as Level 3 operation Remarks None Related TIME DOY Restrictions None ...

Page 332: ...rns the day of the year and the current year Level 1 Same as level 0 operation Level 2 Same as level 0 operation Level 3 Same as level 0 operation Level 4 Same as level 0 operation Remarks This command displays the current day of the year and the year in the unit Related DATE LOGIN USERS Restrictions This command is always hidden and does not display in the online Help ...

Page 333: ...equired to elevate MINOR and MAJOR alarms to the next level after a user settable time period Time is in seconds and can be from 60 seconds 1 minute to 500 000 seconds Level 4 Same as Level 3 operation Remarks The default value for the elevation time is 86 400 seconds 24 hours Related ALARM SETUP Restrictions None The following is an example of the ELEVTIME command message format SSU_2000 ELEVTIME...

Page 334: ...ad and set the current elevation masks for the GPS engine The masks change to avoid attempting to track satellites that are below a portion of the sky that might be blocked by the terrain PMASK Use this option to set the positioning mask level Lower mask levels provide the unit position with a better PDOP TMASK maskUse this option to set the mask level to be used when not in survey mode This is us...

Page 335: ... in degrees Azmth Azimuth of the satellite in degrees Hlth Health of the satellite either H or U Unhealthy can also mean that the user has set the receiver to ignore the satellite PDOP Sets the current Position Dilution of Precision or pdop mask 1 through 10 Pdop is a measurement that indicates the geometry of the GPS satellites that the SSU 2000 is tracking Lower values indicate better geometry T...

Page 336: ...osition is being recalculated and the position is recalculated and updated in the NVRAM Similarly setting the AVG time puts the unit back into survey mode which generates an event that the position is being recalculated TDATA Engine reports are asynchronous outputs which means they can occur at any time not necessarily at the time the command is issued Related None Restrictions None The following ...

Page 337: ...to show the maximum number of events to display Zero returns all events ALL Use this option to show all the events stored in the buffer startdate starttime Use this option to specify the start time and date for displaying events within a time period stopdate stoptime Use this option to specify the stop time and date for displaying events within a time period Use this option to display the event co...

Page 338: ... LOS Active 2001 05 24T18 27 29Z 1A01 Rep Soft PLL HOLD 2001 05 24T18 27 29Z 1A01 Min Freq Mode Holdover Level 2 Same as Level 1 operation Level 3 Same as Level 2 operation with the following additions EVENTS CLR This option clears the event list Level 4 Same as Level 3 operation Remarks Events are stored in non volatile memory They are retained on startup Related ALARM Restrictions None ...

Page 339: ...t provide a parameter frequency measurement on the selected clock to all inputs displays Options are A B Clock A or Clock B Level 2 Same as Level 1 operation Level 3 Same as Level 1 operation Level 4 Same as Level 1 operation Remarks None Related INPUT PHASE Restrictions None Example SSU_2000 FREQUENCY 1A04 01 FreqA 2001 06 18T20 54 19 0 1A04 02 FreqA 2001 06 18T20 54 19 1 1A04 03 FreqA 2001 06 18...

Page 340: ...u displays only commands that are valid for the current user level The Help menu does not display any command that you cannot perform at your current logon level If the first entered character is then the main Help screen appears Related None Restrictions None Example SSU_2000 HELP Level 4 commands ALARM BYE CLK COMM CONFIG DATE ELEVTIME ENGINE EVENTS FREQ HELP ID INFO INPUT IONAME IP KEEPALIVE MS...

Page 341: ...ion Level 2 Same as Level 0 operation Level 3 Same as Level 0 operation Level 4 Same as Level 0 operation Remarks This command is used by test systems to tell the type of instrument connected This is different from the NAME command in that the NAME information is settable by the user The unit ID is also returned on any status type command Related NAME Restrictions None Example SSU_2000 ID Unit ID ...

Page 342: ...isplays information as follows assume COMMS Version A Bootloader A SSU_2000 info Unit ID SSU2000 Main Code D 00 25AUG03 Symmetricom Technical Support 1 888 367 7966 toll free USA 1 408 428 7907 worldwide Support Symmetricom com SSU_2000 Level 1 Same as Level 0 operation Level 2 Same as Level 0 operation Level 3 Same as Level 0 operation Level 4 Same as Level 0 operation Remarks This command displa...

Page 343: ...signal D4 or ESF if DS1 CAS or CCS if E1 unframed signal if specified as CLK zero suppression ON or OFF CRC ON or OFF SSM ON or OFF PQL provision value 1 16 priority 0 10 high gain ON or OFF cesium fault indication level High Low OFF MTIE mask limits hardware alarm LOS AIS OOF BPV CRC error count and clear error count setting If E1 SSM bit position 4 through 8 The alarm level and delay time are ha...

Page 344: ...ange the setting of a specified Input module Options are ESF D4 Sets the T1 framing mode ESF or D4 CCS CAS Sets the E1 framing mode CCS or CAS 1MHZ 1 544MHZ 2 048MHZ 5MHZ 10MHZ Sets the Input module clock frequency when input is not running in framing mode Only the clock frequencies shown are valid If the module is a framed T1 signal the CLK rate is 1 544MHz if it is a framed E1 signal the CLK rat...

Page 345: ...0000 second period MTIE PRS DS1 G 811 G 823 Sets MTIE Limit 1 or Limit 2 for predefined values ANSI Specification PRS DS1 ITU Specification G 811 G 823 GAIN ON OFF Enables or disables input gain setting for port one CSFLT HIGH LOW OFF Sets cesium fault logic level HIGH Alarm active when the fault is a high logic level LOW Alarm active when the fault is a low logic level OFF Default Cesium Fault is...

Page 346: ... 05 24T18 28 23Z ID SSU2000 Name SSU_2000 1A05 01 GPS Input Level 2 Same as Level 1 operation Level 3 Same as Level 2 operation with the following additions IONAME xAy z z CLR io_port_name Use this option to set a name associated with each I O port No control characters are allowed Multiple spaces between words reduce to one blank character The port alias can contain up to 20 characters Level 4 Sa...

Page 347: ...5 255 0 The Default Gateway is 0 0 0 0 The Ethernet Address is 00A06E000CCC Level 2 Same as Level 1 operation Level 3 Same as Level 2 operation with the following additions IP ADDR MASK GATE ip_dotted_address Options are ADDR Change the Internet Protocol IP address MASK Change the subnet mask GATE Change gateway address Level 4 Same as Level 3 operation Remarks When you change a network address yo...

Page 348: ...e time the length of time between automatic events that are generated for upstream support systems Level 2 Same as level 1 operation Level 3 Same as Level 2 operation with the following additions KEEPALIVE TL1 SNMP time Options are TL1 Sets the TL1 session keep alive time SNMP Sets the SNMP session keep alive time time Value in minutes minimum is 1 minute maximum is 60 minutes If 0 minutes are spe...

Page 349: ... user table the user is logged on at the assigned access level After five minutes default of inactivity on the port the user is automatically logged off Level 1 Same as Level 0 operation Level 2 Same as Level 0 operation Level 3 Same as Level 0 operation Level 4 Same as Level 0 operation Remarks Use this command to access various levels of the system This is the only way to change access levels fo...

Page 350: ...RM xAy z FLT SQUELCH AIS Options are ENABLE DISABLEEnable Disable LRM ports LBO Line Built Out SLIP Clear SLIP accumulation counter or set 24 hour slip threshold count BPV Clear BPV accumulation counter CID Clear or Set Circuit ID FLT Defines side 1 output generation when the LRU has a loss of signal on side 1 input loss of all reference sources PLL unlock or if the input signal s frequency has ex...

Page 351: ...command to broadcast a message on all active communication sessions The maximum length of each message is 60 characters Level 3 Same as Level 2 operation Level 4 Same as Level 3 operation Remarks The string must be entered Related None Restrictions None Note The MSG is implemented as an event It displays a full message in an autonomous event But it only saves 20 characters in the event log when a ...

Page 352: ... 24 hour period HISTORY count Displays the one day MTIE history for the last number of days specified in the count parameter This command displays the MTIE information calculated on the input module with a specified clock A start time and stop time are required to perform an MTIE calculation If these are not specified in the command line the start time defaults to the last 24 hours the stop time d...

Page 353: ...Level 4 Same as Level 3 operation Remarks Since MTIE involves intensive calculations you can only specify one port Related None Restrictions None Example SSU_2000 mtie 1A10 02 MTIE for 1A09 01 on Clock A Start Time 2001 06 24T19 00 00 Stop Time 2001 06 25T18 20 00 The MTIE 0 05 sec is 5 The MTIE 0 10 sec is 5 The MTIE 1 00 sec is 6 The MTIE 10 00 sec is 7 The MTIE 100 00 sec is 12 The MTIE 1000 00...

Page 354: ...evel 1 operation Level 3 NAME unit_name Sets the current unit name You can use up to 20 characters for the unit name This name is for identification purposes only Level 4 Same as Level 3 operation Remarks The name displays as part of the prompt Related Valid names must start with a letter If TL1 is to be used care must be taken in the assignment of the unit name as it is the Target Identification ...

Page 355: ...ted_address NTP DELPEER ip_dotted_address NTP CLRALL NTP BTIMER 32 64 128 256 512 1024 Options are ADDPEER Add NTP peers servers to enable broadcast or client mode CLIENT The IP for NTP server in client mode BROADCAST The subnet mask for broadcasting mode BCLIENT The IP for NTP server in broadcast client mode DELPEER Removes NTP servers from the peer table CLRALL Clear all the NTP peer addresses i...

Page 356: ...e length If E1 CRC On or Off SSM bit position 4 8 The alarm level is handled by the ALARM command The alarm elevation time is handled by ELEVTIME command Example SSU_2000 output 2001 05 24T18 29 00Z ID SSU2000 Name SSU_2000 OUT STA Clk Clk Stat Port Status 1 1 1 1 1 1 1 1 1 1 2 Loc Sta Sel A B C D Rednt M S Pql 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 2A01 Ok A Y Y Y Y None 2 2A02 Ok A Y Y Y Y None...

Page 357: ...fied module s ports LEVEL ACQ LOCK Sets the minimum clock level to ACQUIRE or LOCK mode The Output module turns off the output port if the level is below the minimum clock level BYPASS ON OFF Enables or disables the bypass mode to support Clock C 133FT 266FT 399FT 533FT 655FT Sets the line length parameters for the output line driver For DS1 Output modules CRC ON OFF Enables or disables the CRC se...

Page 358: ...d 0 disables the squelch ISOLATE When set to On validates the signal characteristics using isolated ones When set to Off restores the isolated condition and returns to normal operation This command generates a confirmation request Yes No if confirmation is No then no action For DS1 Output module Level 4 Same as Level 3 operation Remarks None Related SETUP STATUS Restrictions None ...

Page 359: ...input Level 2 Same as Level 2 operation Level 3 PBO DISABLE REPORT EVENT NONE Options are DISABLE PBO disabled REPORT PBO Enabled the PBO events sent out and displayed but not stored in the COMM event buffer EVENT PBO Enabled the PBO events sent out and displayed but not stored in the COMM event buffer NONE PBO Enabled but no PBO events displayed Level 4 Same as level 3 operation Remarks None Rela...

Page 360: ...05 24T18 29 09 1 1A04 02 PhA 2001 05 24T18 29 09 1 1A04 03 PhA 2001 05 24T18 29 09 3 1A05 01 PhA 2001 05 24T18 29 12 5 1A09 01 PhA 2001 05 24T18 29 12 1 1A09 02 PhA 2001 05 24T18 29 12 2 1A09 03 PhA 2001 05 24T18 29 12 NA 1A10 01 PhA 2001 05 24T18 29 13 1 1A10 02 PhA 2001 05 24T18 29 13 3 1A10 03 PhA 2001 05 24T18 29 13 2 1A11 01 PhA 2001 05 24T18 29 14 NA 1A11 02 PhA 2001 05 24T18 29 14 2 1A11 03...

Page 361: ...o the network This command transmits a packet to the specified address and waits for a response If a response is received the unit displays a successful command completion message If no response is received the unit times out and prints an unsuccessful command completion message Level 3 Same as Level 2 operation Level 4 Same as Level 2 operation Remarks No name server is available The Internet Pro...

Page 362: ...Status Message SSM for the various framing types Options are FACTORY Use this option to set factory defaults for the table Both DS1 and E1 are affected Pql PQL number for the entry The range is 1 to 16 DS1 E1 Use this option to specify which entry to affect If you do not specify this information both entries are assumed UNUSED Marks this entry as unused in the table SSM n Use this option to set th...

Page 363: ...sc SSM S Text Desc 1 2 0x04 s PRS 0x02 3 0x04 0x02 s PRC G 811 4 0x08 s STU 0x00 s STU 5 0x0C s St2 0x04 Type II 6 0x78 s Type V 0x04 s G 812 Transit 7 Type I Type I 8 0x7C s St3E 0x08 Type III 9 0x10 Type VI 0x08 s G 812 Local 10 0x10 s St3 0x0B Type IV 11 0x22 0x0B s G 813 Opt1 12 0x22 s SMC 0x0F G 813 Opt2 13 0x28 s St4 0x0F 14 0x40 s Reserved 0x0F 15 0x30 s DUS 0x0F s DUS 16 0x7E Unassigned 0x...

Page 364: ... autoreturn Revertive switching mode AS Use this command to enable the input autoswitch Non revertive switching mode OFF Use this command when no switching is used PRIORITY Use this option to set the PRIORITY as the input selection mode Note If the clock module is already selected as an input reference and is not in AS OFF mode this command has no effect If both clocks are removed or in warm up mo...

Page 365: ...ks None Related INPUT CLK STATUS Restrictions None Example SSU_2000 ref 2001 06 18T21 29 56Z ID SSU2000 Name SSU_2000 Input Reference 1A03 01 Bypass Clock C Selected 1A04 01 Clock Selected 1A01 Note Input reference selection order proceeds from highest 1 to lowest 16 PQL valid input port If the inputs have equal PQL values then the priority is used to distinguish between them ...

Page 366: ...ny other operand is invalid This command requires the whole entry RESET be entered to verify that the user really wants to restart that module This command requires a confirmation YES NO If confirmation failed no action occurs Level 4 Same as level 3 operation Remarks None Related RESTART Restrictions This command uses the COMM module PLD s CLK A B reset bit to reset the clock module The software ...

Page 367: ...command refers to the Communications Module This command requires the whole entry RESTART to be entered to verify that you want to restart the module This command requires a confirmation YES NO If confirmation fails no action is required Level 4 Same as Level 3 operation Remarks None Related None Restrictions This command is based on the target module It has the SPI software RESTART command suppor...

Page 368: ...ach target module refer to INPUT CLK or OUTPUT for a description If BUFFER is specified as the module the command displays nothing If the Communications Module is specified as the module the command displays IP address IP mask gateway address communications port settings total number of users stored and maximum number of events stored You can view events from the event log by using the EVENTS comm...

Page 369: ...module restores user defaults in the event that current nonvolatile RAM information in the target module is lost If user information is not present or unusable the target module restores the current factory settings If the factory settings are also not usable the software initializes non volatile RAM with the current program defaults and transfers those setting into non volatile RAM as the new fac...

Page 370: ...s levels MANAGER Displays the SNMP manager table contents Level 2 Same as level 1 operation Level 3 Same as level 2 operation with the following additions SNMP DISABLE ENABLE SNMP TRAP ALARM ALL Options are DISABLE Disables the SNMP agent ENABLE Enables the SNMP agent and allow MIB manager to see the view TRAP Allows user set filter for SNMP trap event port ALARM Only Alarm Traps sent out ALL All ...

Page 371: ...command exits with an error Once the user is entered this option performs identically to the ADD option DELETE Deletes the user from system If the user id is not in the system this command exits with an error Note MANAGER SNMP Manager Table INIT Initializes the SNMP Manager Table to all null IP address ADD Adds an SNMP Manager IP address into the SNMP Manager Table DELETE Deletes an SNMP Manager I...

Page 372: ...ameter all status information from every module in the unit displays If a specified address operand is provided status detail information for that target module displays For each target module refer to INPUT CLK or OUTPUT for a description If the Communications module is specified the bus connection profile displays within 900 seconds If a Buffer module is specified nothing displays Level 2 Same a...

Page 373: ...ter length of time for all modules displays Level 2 Same as Level 1 operation Level 3 Same as Level 1 operation Level 4 Same as Level 1 operation Remarks None Related None Restrictions None Example SSU_2000 systime 2001 06 18T21 31 57Z ID SSU2000 Name SSU_2000 1A01 0T09 13 35 1A02 5T03 25 59 1A03 4T04 06 37 1A04 3T06 26 05 1A05 4T04 05 48 1A08 4T03 30 10 1A09 9T01 43 29 1A10 9T01 43 31 1A11 9T01 4...

Page 374: ...they are valid The command also displays the start and stop time for TDEV calculation TDEV xAy z A B HISTORY count A B specifies Clock A or Clock B The default is the selected clock output This command displays the one day TDEV history for the last one to 100 days Level 2 Same as Level 1 operation Level 3 Same as Level 2 operation Level 4 Same as Level 3 operation Remarks Since TDEV is an intensiv...

Page 375: ...V 0 10 sec is 0 56 The TDEV 0 30 sec is 0 33 The TDEV 0 60 sec is 0 24 The TDEV 1 00 sec is 0 18 The TDEV 3 00 sec is 0 11 The TDEV 6 00 sec is 0 09 The TDEV 10 00 sec is 0 07 The TDEV 30 00 sec is 0 06 The TDEV 60 00 sec is 0 07 The TDEV 100 00 sec is 0 09 The TDEV 300 00 sec is 0 14 The TDEV 600 00 sec is 0 19 The TDEV 1000 00 sec is 0 24 The TDEV 3000 00 sec is 0 62 The TDEV 6000 00 sec is 1 22...

Page 376: ... 0 Not applicable Level 1 TIME Use this command to view the current time within the unit The time is displayed in the following format SSU_2000 time T18 29 41Z Level 2 Same as Level 1 operation Level 3 TIME T hh mm ss Use this command to set the current time within the unit Level 4 Same as Level 3 operation Remarks None Related DATE Restrictions None ...

Page 377: ...T Use this command to view the current format of autonomous messages The response is displayed in the following format SSU_2000 GR831 Level 2 Same as Level 1 operation Level 3 TL1FORMAT GR831 GR833 Use this command to set the format of autonomous messages Options are GR831 Generates GR 831 compliant events on all TL1 sessions GR833 Generates GR 833 compliant events on all TL1 sessions Level 4 Same...

Page 378: ...leave only the built in default system users This option requires users to confirm their intention to clear the user table by entering the complete INITUSRTABLE command ADD Use this option to add a user to the system If the user exists in the system this option exits with an error After the user ID is entered you are prompted for a password Password entries are echoed as Valid password characters ...

Page 379: ... other communications port so that it can be reconfigured The user on the other port is immediately logged off terminating any data that might have been entered The valid port names are L A B TELA TELB TELC TELD TL1A and TL1B Remarks TL1 requires user names and passwords to be limited to 10 characters Related LOGIN BYE Restrictions None ...

Page 380: ...on for the Communications module Level 0 Not applicable Level 1 VER This command views information as follows assumes Communications Module Main Code Version A Current Version Main Code A 01 10FEB99 Level 2 Same as Level 1 operation Level 3 Same as Level 1 operation Level 4 Same as Level 1 operation Remarks None Related INFO Restrictions None ...

Page 381: ...ctive communication ports User name and the communication port name display Level 2 Same as Level 1 operation Level 3 Same as Level 1 operation Level 4 Same as Level 1 operation Remarks None Related USERS LOGIN Restrictions None Example SSU_2000 who 2001 06 18T21 37 59Z ID SSU2000 Name SSU_2000 You are ADMIN with access level 4 connected to TELB ADMIN is connected to COML ADMIN is connected to COM...

Page 382: ...time has not been set by one of the above then it indicates that time is not valid by setting the LI field to 3 Once the unit time has been set by either radio or client then LI 0 Setting time by the keyboard sets or leaves LI 3 since this is not an accurate time setting If the time has been set and the unit switches to a non radio reference then the STR becomes the PQL value for the selected refe...

Page 383: ... Command NTP Use this command to provide access to the NTP in the unit It can run as a server application a client application or in a broadcast mode The client and broadcast modes are enabled independently by assigning an address and setting a timer Operation Level 0 N A Level 1 NTP Displays the NTP data root delay root dispersion peer delay peer dispersion and peer offset Level 2 Same as level 1...

Page 384: ...ed as a client if you don t have a GPS module installed by the command NTP ADD CLIENT XXX XXX XXX XXX This is the most common mode to get timing packets If your system is not a server it can also be configured as a broadcast client to receive timing packets from a broadcast server by the command NTP ADD BCLIENT XXX XXX XXX XXX For more information on these and other NTP commands refer to TL1 Comma...

Page 385: ... must be set by an administrator level 4 access using TL1 or ICS commands only The administrator can add up to five users to the SNMP user table and set the users to access level 1 user access level 2 technician or access level 3 supervisor User levels are based on authentication and privacy settings There are two authentication protocols HMAC MD5 96 and HMAC SHA 96 The HMAC MD5 96 authentication ...

Page 386: ...TL1 Command To use the TL1 command to add user XYZ with MD5 authentication using algorithm HMAC MD5 with the 16 character authentication key a 16 character privacy key and user level 3 type SET PRMTR SNMPV3 USER ADD XYZ MD5 123456789ABCDEFG 123456789ABCDEFG 3 ICS Command To use the ICS command to add user XYZ with MD5 authentication using algorithm HMAC MD5 with the 16 character authentication key...

Page 387: ...elete display SNMP user names read community string and their associated access levels TL1 SET PRMTR SNMP USER tid ctag mode rd_community wr_community level and RTRV PRMTR SNMP USER tid ctag ICS SNMP USER MANAGER The factory default setting for read community string is public The factory default setting for write community string is private Disable enable SNMP TL1 SET PRMTR SNMP MODE tid ctag mode...

Page 388: ...isabled TL1 SET PRMTR KEEPALIVE tid ctag tl1_time snmp_time and KEEPALIVE tid ctag ICS KEEPALIVE TL1 SNMP time Shelf Information Each shelf and distribution unit s description part number and revision level can be displayed Using the following commands with specific options the hardware information can be displayed Refer to TL1 Command Interface on page 266 and Interactive Command Set on page 315 ...

Page 389: ... the features added functions required for the specific application see Table B 9 Table B 9 Communications Module Software Versions Part Number Software Version 24113012 000 0 Basic System Load 24113012 001 0 Basic NTP Support 24113012 002 0 Basic SNMP v2 Support 24113012 003 0 Basic NTP and SNMP v2 Support 24113012 004 0 Basic SNMP v3 Support 24113012 005 0 Basic NTP and SNMP v3 Support ...

Page 390: ...SNMP Protocol 390 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 391: ... Antennas This appendix provides information about optional antennas antenna kits part numbers and installation procedures for connecting GPS antennas to the SSU 2000 In This Appendix Ordering Information Antenna Kits and Accessories Installing Antennas Optional Accessories ...

Page 392: ...rs GPS Antenna with Internal LNA Symmetricom offers three versions of GPS antennas with 26 40 48 and 68 dB internal Low Noise amplifiers LNAs These antennas which are compatible with most commercial GPS receivers receive amplify and filter the L1 1575 42 signal from GPS NAVSTAR satellites With the appropriate antenna see Table C 1 inline amplifier and coaxial cable the antenna functions properly u...

Page 393: ...le 990 13091 013 26 dB Antenna with 13 m 51 2 ft cable 990 13091 033 26 dB Antenna with 33 m 130 ft cable 990 13150 048 26 dB Antenna with 48 m 189 ft cable 990 13073 063 40 dB Antenna with 63 m 248 ft cable 990 13073 120 40 dB Antenna with 120 m 472 ft cable 990 13074 150 48 dB Antenna with 150 m 590 ft cable 990 13074 180 48 dB Antenna with 180 m 716 ft cable 990 13074 230 48 dB Antenna with 230...

Page 394: ...unting 4 holes 1 75 in x 1 75 in 4 445 cm x 4 445 cm centers 0 25 in 0 635 cm mounting holes Diameter 3 5 in 88 9 cm Height 12 94 in 328 7 cm including pipe mount Weight 3 lbs 1 4 kg Environmental Temperature 40 C to 75 C Relative Humidity 100 Non Immersed Altitude 200 ft 60 m below sea level to 13 000 ft 3962 m above sea level Electrical Power 4 7 to 28 vDC 5 vDC Nominal Element Right Hand Circul...

Page 395: ...6013 Adapter Right Angle Female to Right Angle Male 12010210 000 0 Bracket Assembly Antenna Mount Right Angle 400302 0500 Roll 3M 2150 Weatherproof Tape 12813080 000 0 Crimper Kit LMR 400 crimp tool 2150 tape LMR preptool 10 each crimp N type connectors Table C 5 48dB and 68dB L1 GPS Antenna Accessory Kit Part Number Description 12013076 xxx 0 xxx length Cable LMR 400 220 ft to maximum of 970 ft C...

Page 396: ... option used to boost the signal from the antenna for installation The amplifier uses LMR 400 cables longer than 650 feet and receives power from the GPS radio receiver through the antenna coaxial cable connections Table C 7 provides environmental mechanical and electrical specifications for the amplifier Table C 6 FCC 250B 90 1 5NFNF Specifications Characteristic Specification Type Gas Response T...

Page 397: ... types as well as LMR 400 with N type connectors on both ends Table C 8 lists the optional antenna coaxial cables Table C 9 lists the optional antenna coaxial cable crimper kits Table C 10 provides antenna cable specifications Mechanical Connectors In Out N Type Gain 20 dB 25 dB typical Dimensions includes connectors Height 1 12 inches Width 2 0 inches Length 3 5 inches Dimensions includes connect...

Page 398: ...n 12813059 000 0 Crimp Kit for RG213 10 each N Type Connectors crimp tool weatherproof tape 12813060 000 0 Crimp Kit for 9913 10 each N Type Connectors crimp tool weatherproof tape 12813080 000 0 Crimp Kit for LMR 400 or equivalent 10 ea N Type connector crimp tool weatherproof tape Table C 10 Antenna Cable Specifications Cable Type Measured Loss 1 575 GHz dB per foot DC Resistance ohms per foot T...

Page 399: ... connections are used for radio receiver antenna connections only The antenna connections J6 and J7 are connected via the backplane to module slots 3 and 5 When installing GPS antennas the installed modules must correspond to these connections for instance slot 3 to ANTENNA A and Slot 5 to ANTENNA B Installation procedures for GPS antennas are outlined below Table C 11 outlines the antenna signal ...

Page 400: ...endation as to whether to install transient eliminators Symmetricom can provide suitable transient connectors as an option Use 10 AWG minimum copper ground wire Never connect antenna systems to the same earth ground connector as heating and cooling systems elevator or pump motors or other motors or machinery which can induce noise in the antenna system Caution To ensure proper grounding observe th...

Page 401: ...y be required for installing the antenna coaxial cable Digital voltmeter DVM GPS Antenna Installation Procedures This section provides installation procedures for installing the GPS antenna Preparing to Install the GPS Antenna Before beginning to install the antenna determine a grounding scheme and consider the factors that affect the location and environment chosen for the antenna installation Th...

Page 402: ...nvironment influences before installing the GPS antenna If possible provide the antenna with an unobstructed 360 degree view of the sky from the horizon In general do not allow obstructions that obscure the horizon as viewed from the antenna by more than 10 degrees Locate the antenna well away from and preferably in a plane above electrical equipment such as elevators air conditioners or other mac...

Page 403: ...nna mounting pipe floor flange transient eliminator pre assembled coaxial cable for antenna to transient eliminator roll of 3M 2150 weatherproof tape and a right angle adapter All chassis antennas transient eliminators and in line amplifiers have N type connectors All chassis antennas transient eliminators and in line amplifiers have N type connectors Recommendation Symmetricom recommends that you...

Page 404: ...r cable should be kept to the shortest reasonable length For additional transient eliminator protection requirements you can install a 250B 90 Gas Tube transient eliminator in series with the antenna coaxial cable Installing the Transient Eliminator If you are installing a transient eliminator follow these guidelines Transient eliminators should be installed in accordance with your antenna system ...

Page 405: ...antenna To mount the antenna to any stable flat surface use the floor flanges supplied in the GPS Antenna Kit The mounting surface and the local building codes determine the type and number of fasteners screws bolts and so forth that may be required To mount the antenna on the side of a building or tower use the optional right angle mounting bracket part number 12010210 000 0 To secure the coaxial...

Page 406: ...rovided with the antenna cable Antenna Installation Completeness Checklist To verify that antenna installation is complete Verify that all power and ground wires are installed correctly and securely Verify that all input and output cables are properly installed Verify that all antenna connectors are secure tight and weatherproofed Optional Accessories Table C 12 provides a list of optional accesso...

Page 407: ...er s Guide 407 Appendix D Connector Pinouts This appendix describes the pinouts for each of the connectors on the SSU 2000 chassis In This Appendix Signal Names and Definitions Shelf Module Slot Addressing and Size Assignments I O Connector Grounding ...

Page 408: ...the following sections are located on the rear panel of the SSU 2000 as shown in Figure D 1 Figure D 1 SSU 2000 Rear Panel Power and Ground Figure D 2 shows the power and ground connections for the SSU 2000 chassis Table D 1 outlines signal names and definitions for power and ground Figure D 2 Power and Ground Connection Pinouts Covers Removed ...

Page 409: ...tions Table D 1 Signal Names and Definitions for Power and Ground Name Description APWR 48V from Power Bus A ARTN 48V Return from Power Bus A BPWR 48V from Power Bus B BRTN 48V Return from Power Bus B LG Logic Ground Return for Non Isolated Signals FG Frame Ground Safety Ground for Shelf ...

Page 410: ...l Port A Received Data J4 2 RTS A Serial Port A Request to Send Control Line J4 7 TXD A Serial Port A Transmitted Data J4 3 CTS A Serial Port A Clear to Send Control Line J4 8 DTR A Serial Port A Data Terminal Ready Control Line J4 4 RI A Serial Port A Ring Indicator Control Line J4 9 RTN A Serial Port A Signal Return J4 5 DCD B Serial Port B Data Carrier Detect Control Line J5 1 DSR B Serial Port...

Page 411: ...ve Side of Received Data J3 3 RX Ethernet 10 Base T Negative Side of Received Data J3 6 Table D 3 Signal Names and Locations of Local OSC and Antennas Name Description Connector Pin LO A Local Oscillator A Positive Side of Signal J1 A Ctr LO A Local Oscillator A Negative Side of Signal J1 B Shld LO B Local Oscillator B Positive Side of Signal J2 A Ctr LO B Local Oscillator B Negative Side of Signa...

Page 412: ...ns of alarm contact closures Figure D 5 Alarm Connector Pinout Table D 4 Signal Names and Locations of Alarms Name Description Connector Pin LCRT NO Local Critical Alarm Normally Open Contact TB1 1 LCRT COM Local Critical Alarm Common Contact TB1 2 LCRT NC Local Critical Alarm Normally Closed Contact TB1 3 LMAJ NO Local Major Alarm Normally Open Contact TB1 4 LMAJ COM Local Major Alarm Common Cont...

Page 413: ...M Local Minor Alarm Common Contact TB1 8 LMIN NC Local Minor Alarm Normally Closed Contact TB1 9 RCRT NO Remote Critical Alarm Normally Open Contact TB2 1 RCRT COM Remote Critical Alarm Common Contact TB2 2 RCRT NC Remote Critical Alarm Normally Closed Contact TB2 3 RMAJ NO Remote Major Alarm Normally Open Contact TB2 4 RMAJ COM Remote Major Alarm Common Contact TB2 5 RMAJ NC Remote Major Alarm No...

Page 414: ...Select line generated by SPI Master J8 5 18 SBUSY2 SPI Slave Busy line generated by SPI Slave J8 4 17 SRQ2 SPI Service Request line generated by SPI Slave J8 6 19 CLKAOUT2 Clock A to Output Modules synced 4 kHz J8 7 20 CLKBOUT2 Clock B to Output Modules synced 4 kHz J8 8 21 CLKC2 Pass through Clock from Input to Output Modules 4 kHz J8 9 22 CLKD2 Selected Clock via TBNC BNO to SDU 2000 Backup 4 kH...

Page 415: ...apter Pinouts J16 A9 J17 A10 J18 A11 Note The pin assignments for J10 through J18 are identical The pin assignments outlined in Table D 7 refer to all nine of these connectors Table D 7 50 Pin Connector Input Output Signal Names and Location Name Description Connector Pin Cs Fault Logic Level Input Indicating Problem with Cs Reference 1 Cs Fault RTN Return Line for Cs Fault Signal 26 ITIP 01 Tip C...

Page 416: ... 05 Tip Connection of Output Signal 5 7 ORING 05 Ring Connection of Output Signal 5 32 OTIP 06 Tip Connection of Output Signal 6 8 ORING 06 Ring Connection of Output Signal 6 33 OTIP 07 Tip Connection of Output Signal 7 9 ORING 07 Ring Connection of Output Signal 7 34 OTIP 08 Tip Connection of Output Signal 8 10 ORING 08 Ring Connection of Output Signal 8 35 OTIP 09 Tip Connection of Output Signal...

Page 417: ...of Output Signal 16 19 ORING 16 Ring Connection of Output Signal 16 44 OTIP 17 Tip Connection of Output Signal 17 20 ORING 17 Ring Connection of Output Signal 17 45 OTIP 18 Tip Connection of Output Signal 18 21 ORING 18 Ring Connection of Output Signal 18 46 OTIP 19 Tip Connection of Output Signal 19 22 ORING 19 Ring Connection of Output Signal 19 47 OTIP 20 Tip Connection of Output Signal 20 24 O...

Page 418: ... 5 I O Output Pair A or Receiver Input Output paired with 4 or a GPS Receiver module 6 7 6 7 I O Output Pair B Inputs or paired Output modules 8 9 8 9 I O Output Pair C Inputs or paired Output modules 10 11 10 11 I O Output Pair D Inputs or paired Outputs modules 12 15 I O Extras Reserved for future I O 12 17 Clock Clock B 0 All Addresses all modules in the Shelf Table D 9 I O Connector Grounding ...

Page 419: ...D50S J12 Body Shield Connected to Frame Ground Plane I 0 4 Micro D50S J13 Body Shield Connected to Frame Ground Plane I 0 5 Micro D50S J14 Body Shield Connected to Frame Ground Plane I 0 6 Micro D50S J15 Body Shield Connected to Frame Ground Plane I 0 7 Micro D50S J16 Body Shield Connected to Frame Ground Plane I 0 8 Micro D50S J17 Body Shield Connected to Frame Ground Plane I 0 9 Micro D50S J18 B...

Page 420: ...I O Connector Grounding 420 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 421: ... command to verify settings In This Appendix Communications Module Default Settings Stratum 2E and 3E Clock Module Default Settings DS1 and E1 Input Module Default Settings GPS Input Module Default Settings DS1 and E1 Output Module Default Settings 2048 kHz Output Module Default Settings E1 2048 kHz Output Module Default Settings Composite Clock Output Module Default Settings RS 422 Output Module ...

Page 422: ...current configuration is invalid or not present Factory Configuration the factory default configuration User List configurations Maximum of 25 users including four built in users EIA 232 C Port Comm Port Timeout All three comm ports are set to 9600 baud Interactive Mode CRLF and Echo on Five minutes for all Interactive Mode Note the unit should have one user added that is not in the INITUSERTABLE ...

Page 423: ...t 57 ppb Constant Elevation Time 86400 seconds 60 to 500000 seconds Table E 3 Type 1 Clock Module Options Defaults Setting Default Range Warmup Time 1200 seconds 900 3600 seconds Min Tau 330 seconds 150 1200 seconds Max Tau 450 seconds 150 1200 seconds Clk Switch AR On On Off Input Switch AutoReturn AR AR 2 AS On 1 AS Off 0 Input Selection Mode Priority Priority 0 Pql 1 Local Oscillator LO OFF On ...

Page 424: ...tion Setting Factory Default Range Input Frequency for unframed signals 1 544 for DS1 Input module 2 048 MHz for E1 Input module 1 MHz 1 544 MHz 2 048 MHz 5 MHz 10 MHz Framing Type ESF for DS1 Input module CCS for E1 Input module D4 or ESF for DS1 Input Module CAS or CCS for E1 Input Module Zero Suppression On On Off CRC Off On Off SSM Off On Off Provisioned PQL 4 for DS1 Input module Note PQL 4 S...

Page 425: ...rity MINOR except LOS and Level 2 MTIE which are MAJOR Ignore Report Minor Major or Critical Alarm Initial Delay 0 seconds 0 to 86 400 seconds Alarm Elevation Time 86 400 seconds 0 to 500 000 seconds Port Status Disabled Enabled Disabled Port Name Not applicable Any user selected string from 0 to 20 characters Table E 5 DS1 Input Module MTIE Limits Time seconds Set Limit L1 ns Set Limit L2 ns Clea...

Page 426: ...Time seconds Set Limit L1 ns Set Limit L2 ns Clear Limit L1 ns Clear Limit L2 ns 10 80 100 70 90 100 800 1000 700 900 1000 1600 2000 1400 1800 10000 1170 2835 2000 2500 100000 4260 5330 3800 4800 Table E 7 GPS Input Module Default Configuration Settings Configuration Setting Factory Default Range Position GPS only Latitude North South Longitude East West Height Averages PDOP Pos Mode 0 0 0 300 0 C...

Page 427: ...o 10 Table E 8 Line Re timing Module Configuration Configuration Setting Factory Default Range Slips Threshold Error 4 Clear 4 1 to 255 in any 24 hour period Fault Strategy AIS AIS SQUELCH Port Enable Enabled Enabled Disabled Port LBO 1 0 133 ft 1 0 133 ft 2 133 266 ft 3 266 399 ft 4 399 533 ft 5 533 655 ft Circuit ID None blank String from 0 43 characters only valid TL1 characters are supported T...

Page 428: ...ypass Mode ON ON Clock C is selected if it is the only one available OFF Clock C is not selected even if no other clock is available Framing ESF D4 ESF Line Length 0 133 ft 133 266 ft 266 399 ft 399 533 ft 533 655 ft Zero Suppression ON ON B8ZS OFF AMI E1 Output Module Enable Disable Outputs Disabled Settable for each output port Minimum Clock Level Acquire Acquire Lock Bypass Mode ON ON Clock C i...

Page 429: ...oftware parameters are listed in Table E 11 Table E 10 2048 kHz Output Module Configuration Setting Factory Default Range Port State Disabled Disabled Enabled Min Clock Acquire Acquire Lock Framing Not applicable Not applicable Zero Suppression Not applicable Not applicable CRC Not applicable Not applicable SSM Not applicable Not applicable PQL 4 Not applicable Bypass On On Off Fault Action On Off...

Page 430: ...le E 13 Table E 12 Composite Clock Output Module Configuration Configuration Setting Factory Default Range Port State Disabled Disabled Enabled Min Clock Acquire Acquire Lock Framing Not applicable Not applicable Zero Suppression Not applicable Not applicable CRC Not applicable Not applicable SSM Not applicable Not applicable PQL 4 Not applicable Bypass On On Off Fault Action On Off On Auto Duty C...

Page 431: ...L Values DS1 E1 PQL SSM S DS1 Description SSM S E1 Description 1 0x08 0x00 2 0x04 S PRS 0x02 3 0x04 0x02 S PRC G 811 4 0x08 S STU 0x00 S STU 5 0x0C S ST2 0x04 Type II 6 0x0C Type I 0x04 Type I 7 0x78 S Type V 0x04 S G 812 Transit 8 0x7C S ST3E 0x08 Type III 9 0x10 Type VI 0x08 S G 812 Local 10 0x10 S ST3 0x0B Type IV 11 0x22 0x0B S G 813 Opt 1 12 0x22 S SMC 0x0F G 813 Opt 2 13 0x28 S ST4 0x0F 14 0...

Page 432: ...invalid or not present Factory Configuration the factory default configuration User List configurations Maximum of 25 users including four built in users EIA 232 C Port Comm Port Timeout All three comm ports are set to 9600 baud Interactive Mode CRLF and Echo on Five minutes for all Interactive Mode Note the unit should have one user added i e not in the INITUSERTABLE state If it is in the INITUSE...

Page 433: ...ds Warmup Time 1200 seconds Min Tau Limit 300 seconds Max Tau Limit If 2E 10000 seconds If 3E 500 seconds Min Tau 300 seconds Max Tau If 2E 9000 seconds If 3E 450 seconds Clk Switch AR On Input Switch AutoReturn AR Input Selection Mode Priority Local Oscillator LO On Frequency Offset 57 ppb Elevation Time 86400 seconds Warmup Time 1200 seconds Table E 15 User Changes to Factory Default Settings Co...

Page 434: ...User Changes to Factory Defaults 434 SSU 2000 User s Guide 12713020 002 2 Revision D April 2004 ...

Page 435: ...This appendix provides specifications for the SSU 2000 and for its functional components such as operating conditions power inputs clock inputs and outputs indicators EMC and safety standards and chassis dimensions In This Appendix SSU 2000 Shelf Specifications SDU 2000 Shelf Specifications ...

Page 436: ...he Telcordia Technologies formerly Bellcore document GR 1244 CORE Reference Signals Determined by the type of Input module GPS navigation signal DS1 D4 or ESF E1 CAS or CCS Clock 1 MHz 1 544 MHz 2048 kHz 5 MHz 10 MHz Sync Status Messaging SSM Compliant with SSM specifications per T1X1 3 TR33 ANSI T1 101 1999 and Telcordia Technologies GR 253 and 378 CORE and with applicable parts of ITU T G 781 Ev...

Page 437: ...48 kHz G 703 Sec 13 1 544 MHz 2 048 MHz 1 5 and 10 MHz Clocks user settable GPS Integrated single or dual Sync Status Messaging SSM Fully supported Selection Mode Priority and PQL user settable Performance Measurement Resolution 1 ns Sampling Rate 40 Hz MTIE and TDEV Exceeds latest ANSI ITU T and Telcordia Technologies standards Clock Type Holdover Stratum 2E Rubidium Stratum 3E Quartz Control DDS...

Page 438: ...DC Power 48 vDC 240 watts per chassis Fuse Type Rating 2 fuses GMT 5A Grounds 48V return DC isolated from frame and logic grounds Chassis Mechanical Width 17 inches 43 2 cm Depth 11 5 inches 29 2 cm Height 10 5 inches 26 7 cm Weight provisioned 27 lbs 12 3 kg Chassis Environmental Temperature Operational Stratum Levels 1 7 C to 49 C 8 3 C max rate of change per hour GR 1244 CORE Sec 2 2 Relative H...

Page 439: ...k Operational ETS 300 019 2 3 Class T3 1 Sinusoidal Vibration Operational GR 63 CORE Sec 4 4 3 Seismic Vibration GR 63 CORE Sec 4 4 1 Earthquake Zone 4 ETS 300 019 2 3 A1 Shock Transporting ETS 300 019 2 2 Class T2 2 Sinusoidal Vibration Transporting GR 63 CORE Sec 4 4 4 fig 4 3 Random Vibration Transporting ETS 300 019 2 2 Class 2 1 2 2 2 3 and 2 3 special Packaged Equipment Shock GR 63 CORE Sec ...

Page 440: ...eiver Input EN 61000 4 5 1 kV tested combination wave generator 1 2 50 8 20 µs 12 Ω impedance I O Adapter Panels Width 19 EIA Standard rack mount Optional rack ears for mounting in 23 EIA AT T racks and ETSI 530mm racks cabinet Height 1 75 in 4 4 cm Depth 2 0 in 5 0 cm including connector extension Outdoor Operational Conditions GPS Antenna Only ETS 300 019 1 Class 4 1E GPS PRS Performance and Ant...

Page 441: ... limited convection 15 ft min Non condensing over specified temperature range The maximum operation ambient temperature shall be reduced by 2 C for every 984 ft altitude above 4 921 ft The unit is not damaged when exposed to the levels specified in Table F 3 but performance is degraded The unit returns to specified performance upon returning to specified operating conditions Table F 3 Exceptional ...

Page 442: ...ed power inputs are user settable for positive or negative grounding schemes 3 The 48 vDC return is connected to the common ground plane at power source Table F 5 Input Signal Specifications Parameter Specification DS1 Signals Framing D4 SF or ESF User Selectable Bit Rate 1544 kbit s Format AMI or B8ZS per ANSI T1 102 ITU T G 703 Sec 5 Amplitude Range 3 to 24 dBDSX Jitter and Wander Tolerance Meet...

Page 443: ...gnal Waveshape Rise Time Pulse Width Pulse Interval Duty Cycle Framed all ones Alternate Mark Inversion AMI per ANSI T1 102 and ITU Rec G 703 100 nsec 324 nsec nominal 648 nsec nominal 50 Pulse Amplitude 2 4 to 3 6 volts peak into 100 Ω Output Jitter 0 03 UI Number of Outputs 20 per module Termination Impedance 100 Ω 5 E1 Signals Framing user selectable CAS CCS Signal Waveshape Rise Time Pulse Wid...

Page 444: ...e per G 703 Sec 4 and GR 378 5 8 62 5 50 50 500 nsec 500 nsec 9 8 µS 5 7 8125 µS 5 15 625 µS 5 15 625 µS 5 2 7 to 5 5 V peak 1 0 0 1 V 133 Ω 5 110 Ω Number of Outputs 20 per module 2048 kHz Clock Signals Signal Waveshape Rise Time Fall Time Duty Cycle Per ITU Rec G 703 Sec 13 Square wave 50 nsec 50 nsec 50 5 Amplitude 1 0 to 1 9 volts peak into 120 Ω 75 to 1 5 volts peak into 75 Ω Jitter 0 03 UI N...

Page 445: ... system Maximum of 61 m 200 ft between the SSU 2000 main shelf and the farthest expansion shelf Output Section Port 20 ports per Output module pair Distribution Capacity 100 summed outputs per shelf Signal Type DS1 2048 Kbit s E1 1 MHz 1 544 MHz 2 048 MHz G703 Sec 13 5 MHz Composite Clock CC Expansion Shelf Mechanical Height 10 5 in 26 7 cm Depth 11 5 in 29 2 cm Width 17 in 43 2 cm without mountin...

Page 446: ...1 A per Distribution Module Either positive or negative ground Grounds 48V return DC Isolated from frame and logic grounds Integrated frame and logic ground Power Connections A BUS and B BUS 48 60 vDC Input power connectors 6 terminal block on opposite sides of the connector panel Table F 7 SDU 2000 System Specifications Continued Specification Description ...

Page 447: ...x lists the standards and other reference materials that apply to the SSU 2000 In This Appendix ANSI T1 101 1999 Synchronization Interface Standards for Digital Networks Generic Requirements Technical Advisories and Framework Technical Advisories Technical References EIA TIA Documents Other Reference Documents ...

Page 448: ...chronous Optical Network SONET Jitter at Network Interfaces 7 ANSI T1 105 03a 1995 Synchronous Optical Network SONET Jitter at Network Interfaces DS1 Supplement 8 ANSI T1 105 03b 1997 Synchronous Optical Network SONET Jitter at Network Interfaces DS3 Supplement 9 ANSI T1 105 04 1995 Synchronous Optical Network SONET Data Communication Channel Protocols and Architectures Family of Requirements 10 F...

Page 449: ...s Issue 1 Bellcore December 1995 A module of TSGR FR 440 6 GR 831 CORE OTGR Section 12 1 Operations Application Messages Language for Operations Application Messages Issue 1 Bellcore November 1996 A module of OTGR FR 439 7 GR 1089 CORE Issue 2 Revision 1 2 1999 Electromagnetic Compatibility and Electrical Safety Generic Criteria for Network Telecommunications Equipment Technical Advisories and Fra...

Page 450: ...cember 1990 A module of TSGR FR 440 TR NWT 000930 Generic Requirements for Hybrid Microcircuits Used in Telecommunications Equipment Issue 2 Bellcore September 1993 A module of RQGR FR 796 14 TR NWT 001112 Broadband ISDN User to Network Interface and Network Node Interface Physical Layer Generic Criteria Issue 1 Bellcore June 1993 15 TA NPL 000286 not available 16 TA NPL 000464 Generic Requirement...

Page 451: ...ent SONET ADM Generic Criteria Issue 3 Bellcore May 1992 A module of TSGR FR 440 8 TR NWT 000835 OTGR Section 12 5 Network Element and Network System Security Administration Messages Issue 3 Bellcore January 1993 A module of OTGR FR 439 TR OPT 000839 see GR 839 CORE TR NWT 000917 SONET Regenerator SONET RGTR Equipment Generic Criteria Issue 1 Bellcore December 1990 A module of TSGR FR 440 9 TR NWT...

Page 452: ... Bellcore Technical Reference EIA TIA Documents 1 EIA TIA 455 170 Cutoff Wavelength of Single Mode Fiber by Transmitted Power 2 EIA TIA 492 Generic Specification for Optical Waveguide Fiber 3 EIA TIA 559 Single Mode Fiber Optic System Transmission Design 4 FOTP 127 Spectral Characterization of Multimode Laser Diodes 5 OFSTP 2 Effective Transmitter Output Power Coupled into Single Mode Fiber Optic ...

Page 453: ...method shock 8 IEC 68 2 29 Testing method shock 9 IEC 68 2 36 Testing method random vibration 10 IEC 917 2 2 Dimensions for subracks and plug in units 11 ISO 1043 1 1987 Symbols for marking of polymers 12 ISO 1043 2 1988 Symbols for marking of polymers 13 ISO 11469 1993 Marking of polymers 14 ITU T K21 EMC immunity requirements 15 UL 1950 CSA C22 2 No 950 95 Safety requirements 16 EN 300 386 2 cla...

Page 454: ...asurement of Radio Disturbance Characteristics of Information Technology Equipment 27 EN 61000 4 2 1995 Electromagnetic Compatibility EMC Part 4 Testing and Measurement Techniques Section 2 Electrostatic Discharge Immunity Test Basic EMC publication 28 EN 61000 4 3 1996 Electromagnetic Compatibility EMC Part 4 Testing and Measurement Techniques Section 3 Radiated Radio Frequency Electromagnetic Fi...

Page 455: ... 344 TL1 314 activating a user See logging in adapter panels I O 47 48 adding a user ICS procedure 92 address IP retrieving ICS 347 retrieving TL1 294 setting ICS 347 setting TL1 308 administrator adding an administrator level user 91 user level 275 aid ICS 315 TL1 269 AIS error threshold retrieving TL1 289 error clear count retrieving ICS 343 error clear count retrieving TL1 278 error clear count...

Page 456: ...length 404 architecture SSU 2000 29 ASCII mode returning to 314 selecting ICS 327 selecting TL1 307 atag TL1 273 autonomous reports setting format ICS 377 setting format TL1 313 autonomous reports TL1 272 autoreturn 31 setting ICS 324 setting TL1 304 status retrieving current ICS 364 status retrieving current TL1 291 autoswitch 31 setting ICS 364 setting TL1 305 status retrieving current ICS 364 s...

Page 457: ... DS1 Input module 158 Cesium fault E1 Input module 149 Cesium fault enabling ICS 345 Cesium fault enabling TL1 308 changing to Normal mode 231 to Subtending mode 230 checking current alarms 98 checklist pre installation antenna 401 clearing the screen ICS 325 client mode NTP 382 clock 323 autoreturn setting ICS 324 autoreturn setting TL1 304 backup 54 current retrieving TL1 303 frequency error cle...

Page 458: ... 27 configuration changing 100 configurations default 99 connecting 69 connecting the GPS antenna 406 connectors alarm 412 antenna 411 backup clock J9 414 external main shelf 39 local oscillator 411 rear panel vs I O slot 414 requirements 403 SDU 2000 interface 414 contact closures alarms 438 contacting Symmetricom 392 correlation tag 269 correlation tag TL1 270 CRC error threshold retrieving TL1 ...

Page 459: ...lock diagram 178 DS1 Output module alarms 250 default settings 428 events 261 front panel 179 DS1 E1 Input modules 44 DTE DCE switch location 39 DTE DCE switch serial port 70 duty cycle setting CC Output module ICS 357 CC Output module TL1 306 E E1 input framing mode ICS 344 input framing mode TL1 308 output framing mode TL1 311 E1 Input module alarms 246 block diagram 145 Cesium fault 149 default...

Page 460: ...ule 255 DS1 Input module 257 E1 Input module 257 GPS Input module 258 log 139 Output module 261 retrieving ICS 337 retrieving TL1 285 RS 422 Output module 261 exceptional operating conditions 441 exchanging a module procedure 80 expansion shelf See SDU 2000 expansion terminator 75 external connectors main shelf 39 F factory configuration command TL1 311 fax number Symmetricom 392 FG See frame logi...

Page 461: ...l LNA 392 GPS Input module 162 alarms 247 block diagram 163 default settings 426 events 258 factory default values 165 front panel 163 overview 45 GPS L1 amplifier 396 specifications 396 GPS L1 amplifier assembly 397 GPS radio receiver 403 GR831 833 format retrieving ICS 377 retrieving TL1 300 setting ICS 377 specifying TL1 313 GR 831 833 response format 272 graphical user interface 50 grounding 7...

Page 462: ...ority setting ICS 344 reference port retrieving ICS 364 reference port retrieving TL1 300 settings retrieving TL1 294 SSU 2000 30 status retrieving ICS 343 status retrieving TL1 301 TDEV data retrieving TL1 283 TDEV history retrieving TL1 284 troubleshooting 120 insertion loss GPS receiver installation 403 installation completeness checklist 83 completeness checklist antenna 406 EMI considerations...

Page 463: ...g TL1 302 line termination ICS 326 LNA See GPS antenna local oscillator connectors 71 lock clock level affecting outputs ICS 357 logging in ICS 316 349 TL1 314 logging off ICS 322 TL1 314 logic ground isolating 65 logic frame grounds 42 logoff forced ICS 379 logon ICS 316 349 TL1 314 long term frequency specifications 436 LOS error threshold retrieving TL1 289 error clear count retrieving ICS 343 ...

Page 464: ... 1 Clock module 44 132 user setting saving ICS 368 monitor only configuration 28 mounting bracket assembly 395 configurations GPS L1 inline amplifier 397 GPS antenna 405 specifications 394 MTIE alarms 146 155 calculation 146 155 description 146 historical data retrieving ICS 352 historical data retrieving TL1 281 Limit 1 2 setting ICS 345 limits DS1 Input module 425 limits E1 Input module 426 mask...

Page 465: ...RS 422 Output module 199 status retrieving ICS 356 status retrieving TL1 303 troubleshooting 120 overview indicators and control 52 installation procedure 59 operation 51 P packaging for shipment 121 panels blank filler 239 part numbers antennas 393 backup clock cable 75 blank filler panels 239 BNO tee connector 75 crimper kit 398 crimper kit GPS antenna 395 EIA 232 cable 239 expansion cable for S...

Page 466: ...ng antenna site installation 399 primary reference source configuration 28 priority mode overview 32 setting ICS 364 setting TL1 308 Priority Quality Level See PQL product overview SSU 2000 25 prompts ICS 316 protocol communications 49 PRS configuration 28 purpose of this guide 20 Q quality level input retrieving TL1 301 input setting ICS 345 input setting TL1 308 SSM 51 quartz oscillator 128 R ra...

Page 467: ...specifications 58 445 switch S1 S2 75 77 synchronization distribution unit 52 security system overview 98 274 selecting the system reference 31 serial port 69 140 active users retrieving ICS 381 assignment 69 88 connecting 69 default settings 422 pinouts 70 protocol 69 88 setting parameters ICS 326 setting parameters TL1 307 settings retrieving ICS 326 settings retrieving TL1 293 server mode NTP 3...

Page 468: ...E1 2048 kHz Output module 185 RS 422 Output module 199 srveff TL1 273 SSM bit position input TL1 308 bit position output ICS 357 bit position output TL1 311 compliance 436 enabling disabling ICS 344 enabling disabling TL1 308 input E1 bit position ICS 345 overview 51 translating from PQL ICS 362 SSU 2000 architecture 29 block diagram 29 clock section 33 communications section 33 dimensions 438 dis...

Page 469: ...ear panel 75 77 expansion shelf 74 SSU 2000 and SDU 2000 74 tid TL1 268 time retrieving ICS 376 setting ICS 376 setting TL1 304 timeout retrieving TL1 293 setting ICS 327 setting TL1 307 TL1 in the aid 269 adding a user 313 aid 269 almcde 273 autonomous report format setting ICS 377 autonomous report format setting TL1 313 autonomous reports 272 cmd 268 command syntax 268 complied message 270 ctag...

Page 470: ...eving 303 User level users 275 V vDC return common ground plane 442 ventilation precautions considerations 62 version software retrieving ICS 380 W wander Stratum 2E Clock module 127 Stratum 3E Clock module 131 Type 1 Clock module 135 warmup clock level affecting outputs TL1 311 warm up time clock setting ICS 324 warnings defined 23 web address 24 wire wrap adapters 171 406 wire wrap adapters inpu...

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