manualshive.com logo in svg

Arbiter Systems 1094B, Operation Manuals

Share
Download
Arbiter Systems 1094B Operation Manuals Download Page 84

70

Timing, IRIG-B and Pulses

8.4.4

Connecting Unmodulated IRIG-B

To drive multiple loads from a single 1094B timing output, make sure they are wired in parallel.
Some call this “daisy-chaining”, however the idea is to drive all of these loads in parallel from the
single output. It is much simpler to connect loads to unmodulated IRIG-B than for modulated.
This is because all of the loads are driven at the same voltage and each draws current directly from
the transmission line.

To determine capacity for Unmodulated IRIG-B, follow these steps:

1. determine the impedance (or resistance) of each connected load
2. divide the drive voltage (5 V) by the resistance of each device
3. sum up all the load currents for the total current for one clock output
4. the total current should not exceed 250 mA.

Another method is to determine the lumped impedance of all of the connected IED’s in parallel.

Then, determine the overall current by dividing the drive voltage (5 V) by the computed lumped
impedance value. This current should not exceed 250 mA.

Techniques for Lightly Loaded Outputs

For lightly loaded outputs, you may want to consider intentionally loading down the output with
a resistor. This technique tends to calm any overshoot and ringing that would otherwise occur
without it. For example, placing a 50-Ohm resistor across the load would increase the output
current by 100 mA, however it would require a resistor that would handle that load. Consider
using at least a 1-Watt resistor in this example. Two possibilities exist: (1) placing a loading
resistor across the load itself, and (2) placing a source resistor in series, at the output of the clock.
A source (series) resistor would also tend to drop the available voltage to the device, so make sure
that the voltage is adequate with suggestion #2.

8.4.5

Connecting Modulated IRIG-B

The total load capacity for the modulated IRIG-B driver depends on the type and number of
loads. The main difference in computing the load capacity for modulated IRIG-B and unmodulated
IRIG-B is that modulated IRIG-B decoders tend to be sensitive to the peak-to-peak voltage. With
adding loads, the 1094B modulated driver produces more current, which is passes through the
internal source resister, dropping the available output voltage. The open circuit voltage (i.e. no
loads) is approximately 4.5 Vpp, so any connected loads will cause the available voltage to drop.
The available output voltage (Vpp) with a known current is calculated in 8.2.

(8.2)

V pp

= 4

.

5

V pp

−

I

(19

.

6

Ohms

)

Therefore, if you had 10 mA of load current (I load) the available voltage (Vpp) would be 4.304
Vpp. If the load current equals 100 mA, then the available voltage would be 2.54 Vpp. So, you
can see how the increasing load current (i.e number of loads) affects the available drive voltage at
the clock output. See also Table 8.1.

Summary of Contents for 1094B

Page 1: ...MODEL 1094B GPS SUBSTATION CLOCK OPERATION MANUAL ARBITER SYSTEMS INC PASO ROBLES CA 93446 U S A WWW ARBITER COM ...

Page 2: ...5 December 2011 or later Any changes made in subsequent revisions which affect operation or specifications will be noted with either a a new manual or b a revised version of this manual To display the firmware version or date for your instrument using the 1094 Utility application see Section 6 6 10 The firmware version may also be viewed using VE command in a terminal window see Section 10 3 15 Mi...

Page 3: ...R PURPOSE AND BUYER EXPRESSLY WAIVES ALL OTHER WARRANTIES This limited warranty does not extend to any product which has been subject to 1 Improper use or application abuse or operation beyond its rated capacity or contrary to the instructions in the operation and maintenance manuals if any 2 Accident 3 Repair or maintenance performed by Buyer except in accordance with the operation and maintenanc...

Page 4: ...iv ...

Page 5: ...lication Software Chapter 7 The Setup Menus Chapter 8 Timing IRIG B and Pulses Chapter 9 Relay Contacts and Event Inputs Chapter 10 Serial Communication and Commands Appendix A Technical Details and Specifications Appendix B Using Surge Arresters Appendix C Statement of Compliance Appendix D Switching High Voltage Signal Lines Index Copyright Arbiter Systems Incorporated August 2017 All rights res...

Page 6: ...3 2 Antenna Input 8 2 3 3 Event Input 9 2 3 4 RS 232 and RS 485 Communication Ports 9 2 3 5 Form C Relay Contacts 9 2 3 6 Timing Outputs 10 3 Connecting Inlet Power 11 3 1 Option 07 IEC 320 Power Inlet Module 11 3 1 1 Cordsets and Plug Styles for Option 07 12 3 1 2 Option 07 Connecting Power to the 1094B 12 3 2 Option 08 10 to 60 Vdc Power Inlet Module 12 3 2 1 Option 08 Connecting Inlet Power 13 ...

Page 7: ...mpers 26 5 5 1 Selecting the Event Input Channel and Voltage 26 5 5 2 Configuring the Event 1 PPS Function 26 6 Clock Startup and Utility Software 27 6 1 Initial Startup Sequence 27 6 1 1 Clock Time Startup Mode 27 6 2 Front Panel Indication 28 6 2 1 LCD Display Indication at Startup 28 6 2 2 Other Display Indications When Unlocked 28 6 2 3 Status Display Indications 29 6 2 4 Event Deviation Displ...

Page 8: ...ial COM1 49 7 3 Set Serial COM2 49 7 3 1 Set Broadcast Mode from Serial COM1 50 7 3 2 Configure Serial COM1 Port Parameters 51 7 4 Set Local Offset 51 7 5 Set DST Summer Time 52 7 6 Set Out of Lock 53 7 7 Set Backlight 53 7 8 Set Cable Delay 54 7 9 Set Programmable Pulse A and B 55 7 9 1 Programmable Pulse A 55 7 9 2 Programmable Pulse B 55 7 9 3 Programmable Pulse Signal Levels 55 7 9 4 Programma...

Page 9: ...rew Terminals 69 8 4 2 How Far Can I Run IRIG B Cabling 69 8 4 3 Synchronizing Multiple Devices From One Masterclock Output 69 8 4 4 Connecting Unmodulated IRIG B 70 8 4 5 Connecting Modulated IRIG B 70 8 4 6 Wire Losses 71 8 4 7 Voltage Matching for Modulated IRIG B 71 8 4 8 Cable Delays 71 8 4 9 Solutions 72 9 Relay Contacts and Event Inputs 73 9 1 Introduction to Relay Operation 73 9 2 Configur...

Page 10: ... 14Out of Lock Commands 98 10 3 15Miscellaneous Commands 98 A Technical Specifications and Operating Parameters 100 A 1 Introduction 100 A 2 Receiver Characteristics 100 A 2 1 Input Signal Type Frequency 100 A 2 2 Timing Accuracy 100 A 2 3 Internal Oscillator 100 A 2 4 Position Accuracy 100 A 2 5 Satellite Tracking 100 A 2 6 Acquisition 101 A 3 I O Configuration 101 A 3 1 Timed Outputs 101 A 3 2 I...

Page 11: ...B 3 3 Antenna and Clock Connections 106 B 3 4 Weather Sealing the Connections 106 B 3 5 Suggested Mounting 106 B 4 Physical Dimensions 106 C Statement of Compliance 108 C 1 Introduction 108 D Switching High Voltage Signals 110 D 1 Introduction 110 D 2 Example 1 300 Volt FET Pull Down 110 D 2 1 Logging Requirements and Circuit Notes 111 D 3 Example 2 300 Volt FET with Voltage Source in Series 111 D...

Page 12: ... 12 3 3 Option 10 Power Supply Inlet Description 13 4 1 Antenna Assembly for Mounting 16 4 2 Antenna Mounting Bracket 17 4 3 Antenna Mounting with AS0044600 17 4 4 GPS Surge Arrester 18 5 1 Mainboard Jumper Locations 22 6 1 1094B Utility Software Opening Window 33 6 2 Connecting with the 1094B 34 6 3 Windows XP Device Manager identify COM port 35 6 4 COM Port Assignment Windows XP 35 6 5 Reading t...

Page 13: ... Programmable Pulse Setup Pulse Per Hour 57 7 14 Programmable Pulse Setup Pulse Per Day Mode 58 7 15 Programmable Pulse Setup Single Trigger Mode 58 7 16 Programmable Pulse Setup Slow Code Mode 59 7 17 Programmable Pulse Setup Seconds Per Pulse Mode 59 7 18 Programmable Pulse Setup Frequency Mode 60 7 19 Programmable Pulse Setup Aux IRIG B Mode 60 7 20 IRIG B Configurations 61 7 21 Auto Survey Con...

Page 14: ...t Jumper Selection 24 5 3 Relay Jumper Positions 25 5 4 Communication Port Jumper Selection 25 5 5 Event Input Voltage Selection 26 5 6 Event Input Connector Selection 26 7 1 Front Panel Setup Menus 47 7 2 Default Firmware Settings 49 8 1 Drive Current vs Voltage 65 8 2 IRIG B Time Code Types Available 66 8 3 Programmable Pulse Output Functions 68 10 1 COM1 and COM2 Pin Definitions 79 10 2 Custom ...

Page 15: ...re when handling Remember to store the antenna in a safe place before the final installation Static Discharge Note that the Model 1094B is an electronic device and uses static sensitive components in its operation Therefore use care when handling against static discharges Generally these components are protected in their normal situation however some of these are accessible when the cover is remov...

Page 16: ... 1 Packaging of Accessories Antenna cable clock and setup guide are located between the two pieces of closed cell foam The rack mount ears and antenna are embedded in the packing foam side labeled ADDITIONAL PARTS INSIDE 1 4 Attaching Rack Mount Ears to Clock Each Model 1094B comes with two rack mount ears suitable for mounting in a 19 inch system rack These ears have four mounting holes two of wh...

Page 17: ...unt the M25 screws 3 Repeat this procedure with the other side of the chassis and other rack mount ear Figure 1 2 Attaching Rack Mount Ears NOTE Before installing the rack mount ears you might want to determine if you need to set any internal jumpers To install the rack mount ears requires removal of the top cover which would be a good time to make any changes to jumper settings For detailed infor...

Page 18: ...ypad and ON OFF power switch The upper row of keys are for viewing clock information and the lower row of keys are for configuring the instrument Figure 2 1 illustrates indicators and controls used to determine the status and configure the operation of the 1094B Figure 2 1 Front Panel Description Definitions for the annunciator LEDs are found in Table 2 1 and definitions for keys in Table 2 3 Each...

Page 19: ...IZED Flashes ON OFF 1 second intervals when clock time is stabilizing with GPS Is steady when the clock time is accurate OUT OF LOCK Illuminates when the clock has not yet synchronized or has lost synchro nization with the GPS FAULT Illuminates when an internal fault occurs Faults are listed below Fault Indication Definition Out of Lock GPS Receiver is not receiving satellite signals Receiver Fail...

Page 20: ...a entry mode Table 2 3 Command Key Definitions Time Key Sets the display to the Time Display Mode There are four modes of the time display available and repeated pressing of this key will cause the display to scroll through all four modes continuously Changing the time display has no effect on the time data which is output from rear panel timing outputs Position Key Cycles the display through the ...

Page 21: ...ext parameter or progresses to the next menu level In numeric data entry mode moves the cursor to the right 2 3 Rear Panel Identification and Connectors This section contains information to assist you in identifying where to connect inlet power the GPS antenna cable and all of the input and output cables on the Model 1094B Figure 2 2 Rear Panel Description 2 3 1 Power Inlet To cover a wide range o...

Page 22: ... SWC Figure 2 5 Option 10 Power Supply Inlet Connector 2 3 2 Antenna Input The Model 1094B provides a Type F GPS antenna input connector not only as the connection point for GPS signal but also supplies 5 volts to energize the antenna It is equipped with a threaded Type F female connector Figure 2 6 illustrates a Type F female antenna connector For further information on antennas and antenna cabli...

Page 23: ...pter 10 Serial Communications and Commands Figure 2 8 Communication Port Connectors 2 3 5 Form C Relay Contacts The Model 1094B has one set of Form C relay contacts that have three contact points Normally Open NO Normally Closed NC and Common COM as illustrated in Figure 2 9 Contact functions include Fault Out of Lock or Programmable Pulse A Fault or Out of Lock relay functions are defined when re...

Page 24: ...they are labeled Output 1 Output 2 Output 3 and Output 4 from right to left Both connectors of one output channel may be used simultaneously from the same output channel being wired in parallel Single connectors may also be Tee ed for parallel connected loads For more information concerning how to connect any timing output for distribution to protective relays see Chapter 8 Timing IRIG B and Pulse...

Page 25: ...verify that it is correct according to your order Also make sure to check the inlet module for polarity and voltage marking before connecting power to the clock 3 1 Option 07 IEC 320 Power Inlet Module The Option 07 IEC 320 power inlet module has a computer type power connector with power cord for the required country code Voltage and system frequency are given below with an outline of the connect...

Page 26: ...America and ROC NEMA 5 15P CSA C22 2 42 120V P10 Japan JIS8303 120V Table 3 1 Available IEC 320 Cordsets by Country 3 1 2 Option 07 Connecting Power to the 1094B Connect the IEC 320 plug to the IEC 320 connector on the 1094B and then connect the wall plug into the wall socket 3 2 Option 08 10 to 60 Vdc Power Inlet Module This option replaces the standard power supply with one accepting 10 to 60 Vd...

Page 27: ...t voltages are 85 to 264 Vac 47 to 440 Hz or 110 to 350 Vdc 20 VA typical Figure 3 3 Option 10 Power Supply Inlet Description 3 3 1 Option 10 Connecting Inlet Power When wiring this power supply make sure to first connect an earth ground wire to the terminal strip connector labeled G for ground Positive and negative terminals are marked on the terminals as and After connecting a ground wire connec...

Page 28: ...nnect the line cord from the power source and then remove the cord from the rear panel IEC connector The in circuit fuse is the innermost one inspect it to determine if it is open As required replace with fuse in the outer compartment and replace the spent fuse Option 08 or Option 10 terminal strip connector inlet power modules include separate threaded fuse holder adjacent to the terminal power s...

Page 29: ...orable location may work however reception may be somewhat limited during certain hours of the day This is because the GPS satellites are continually moving across the sky into and out of view of the antenna 4 1 1 Mounting the Antenna The standard antenna is designed for pole mounting on a 26 mm pole 1 05 in OD or 3 4 in ID pipe with either a standard 1 in 14 approximately M25 4 x 1 81 marine moun...

Page 30: ...ket The hard ware included with the bracket allows installation of the antenna on a mast or pipe up to about 2 in diameter and a different clamp may be substituted for use with a larger diameter pipe Also the bracket can be mounted to a wall a roof or any other flat surface For complete details on this product request installation instructions for Arbiter Systems GPS Antenna Mounting Kit found on ...

Page 31: ...4 1 GPS Antenna Installation 17 Figure 4 2 Antenna Mounting Bracket Figure 4 3 Antenna Mounting with AS0044600 ...

Page 32: ...The GPS clock provides a 5 Vdc signal at 30 mA nominal which is carried through the antenna cable to the GPS antenna Without the signal the antenna and the GPS clock will not synchronize with the Global Positioning System and can generate an out of lock alarm if the Out of Lock feature is enabled 4 2 3 Power Supply Check The Antenna Voltage test above actually tests the main power supply voltage T...

Page 33: ... cable are impor tant Due to their effect on specific parameters described in the following paragraphs any changes to the length and or type of antenna cable should be made carefully Damaged cables may also affect performance Cable Delay The velocity factor and the physical length of the cable determine cable delay During the initial factory calibration of the clock a value for cable delay based u...

Page 34: ...120 meters 400 feet without the in line preamplifier or 240 meters 800 feet with the AS0044700 amplifier P N Description Delay ns Signal Level dB CA0021315 15 m 50 ft cable RG 6 60 ns 5 dB CA0021330 30 m 100 ft cable RG 6 119 ns 9 dB CA0021345 45 m 150 ft cable RG 6 177 ns 13 dB CA0021360 60 m 200 ft cable RG 6 236 ns 17 dB CA0021375 75 m 250 ft cable RG 6 295 ns 21 dB WC0004900 305 m 1000 ft roll...

Page 35: ...on or open circuit would deprive the preamplifier of power Either a short or open circuit condition in the antenna cable will render the clock inoperable Prior to initial operation or if problems are suspected perform the suggested checks or tests covered in Section 4 2 Connection to Antenna The male Type F connector on one end of the antenna cable mates with the female Type F connector on the ant...

Page 36: ...using the 1094 Utility software go to Chapter 6 Clock Startup and Utility Software For additional technical details about timing signals please see Chapter 8 Timing IRIG B and Pulses 5 1 1 Jumper Locations Figure 5 1 outlines the main board in the Model 1094B depicting the approximate locations of the various jumpers Use this drawing to assist you with locating the jumpers you want to configure Ju...

Page 37: ...MP13 Timing Output 2 C CMOS 5 Vdc JMP14 Timing Output 3 A IRIG B unmodulated JMP15 Timing Output 3 C CMOS 5 Vdc JMP16 Timing Output 4 A IRIG B unmodulated JMP17 Timing Output 4 C CMOS 5 Vdc Table 5 1 Default Mainboard Jumper Settings NOTE Jumpers in the following tables are grouped according to main functions and not neces sarily in numerical order NOTE Values in tables marked with a show the defa...

Page 38: ... 2 To set any output as modulated IRIG B set only one jumper For example to set Output 2 as modulated IRIG B set jumper JMP13 B Jumper JMP12 is not required 3 To set any output as programmable pulse use two jumpers For example to set Output 3 to programmable pulse and 300 V FET set jumper JMP14 C and JMP15 A Note that Programmable Pulse A configures Outputs 1 and or 2 and Programmable Pulse B conf...

Page 39: ...S 485 levels See Table 5 4 for details on jumper positions See Table 10 1 for COM1 and COM2 pin definitions Driver Output Signal COM1 COM2 RS 232 Prog Pulse A JMP5 A JMP7 A DTR JMP5 B JMP7 B RS 485 TXD Ch JMP4 A JMP6 A Prog Pulse B JMP4 B JMP6 B IRIG B JMP4 C JMP6 C Table 5 4 Communication Port Jumper Selection NOTE COM1 can serve as an alternate port for Programmable Pulse A and COM2 can serve as...

Page 40: ...48 Vdc JMP3 B Event 120 240 Vdc JMP3 C Table 5 5 Event Input Voltage Selection Input Connector Jumper Position COM1 JMP2 A COM2 JMP2 B Event JMP2 C Table 5 6 Event Input Connector Selection 5 5 1 Selecting the Event Input Channel and Voltage 1 Select the input channel as the designated BNC Event Input default COM1 or COM2 pin 2 choose jumper position A for COM1 B for COM2 or C for the BNC Event co...

Page 41: ...the out of lock or faulted position Eventually the UNLOCKED LED should extinguish The Out of Lock Relay should change to Locked condition after a few minutes depends how long the clock has been powered off The LCD should indicate that the clock is Locked The Stabilized LED should light steadily after a few minutes of locked operation 6 1 1 Clock Time Startup Mode When the Model 1094B first starts ...

Page 42: ... close 6 2 Front Panel Indication 6 2 1 LCD Display Indication at Startup In the startup sequence the LCD display should indicate similar to the messages shown below ARBITER SYSTEMS GPS SUBSTATION CLOCK followed by COPYRIGHT C 2009 ARBITER SYSTEMS INC followed by CLOCK STATUS STARTUP followed by CLOCK STATUS UNLOCKED 01 MIN After this the second line of the status display should change to UNLOCKED...

Page 43: ...X AUTO SURVEY GPS tracking status message GPS TRACKING STATUS TRACKING 12 SATS The number of tracked satellites can change from 0 to 12 EEPROM status message EEPROM STATUS CORR ERRORS 0 If the number of corrected CORR errors begins to climb contact the factory about replacing the EEPROM 6 2 4 Event Deviation Display There are separate displays when pressing the EVENT DEVIATION key depending on the...

Page 44: ...ime while the GPS receiver begins collecting data from the GPS it will indicate either UNLOCKED XX Min or LOCKED One of several fault messages may be displayed if they exist Out of Lock Receiver Failure Antenna Short low antenna voltage Antenna Open no current drawn by antenna system For additional information on internal faults please see Table 2 2 Fault Indications and Messages and Section 10 3 ...

Page 45: ...plication of daylight saving correction and local offset NOTE Daylight saving and local offset have no effect on this display 6 4 3 Date and Time Display Local Time This mode displays the date and time after the daylight saving correction and local offset have been applied but in the same format as that of the Date and Time UTC LOCAL DATE TIME www dd mmm yyyy hh mm ss 6 4 4 Time of Year Display Lo...

Page 46: ...splayed position is based on the most recent surveyed position Press the POSITION key to access longitude latitude and elevation data values Repeatedly pressing the POSITION key scrolls the readout display continuously through these values If pressed prior to acquisition of enough satellites to accurately determine and update position data the display will indicate POSITION NOT AVAILABLE Synchroni...

Page 47: ...ossible to program the Model 1094B by sending basic commands through a terminal or terminal emulation program These commands are listed in Chapter 10 Serial Communication and Command Set 1094B Utility software allows you to read write and verify operation on the Model 1094B While it is idle it releases the serial port on your pc for use For pc s without serial ports you will need to use a USB to s...

Page 48: ...ettings Serial Port COM choosing the correct COM port associated with your computer see Figure 6 2 If your computer has its own serial port choose that one If you are using a USB to Serial converter choose the one that is associated with your converter Make sure to go back and select Settings Baud Rate choosing the same baud rate as on the Model 1094B To check the baud rate on your Model 1094B pre...

Page 49: ...nused number Identifying COM Port Using Windows Device Manager To check this you will need to go to My Computer Manage Device Manager Ports COM LPT USB Serial Port COM X X should represent the COM port number See Figure 6 3 Figure 6 3 Windows XP Device Manager identify COM port Reassigning COM Port Number To reassign the port you will need to go to My Computer Manage Device Manager Ports COM LPT U...

Page 50: ...ity will immediately try to read the configured settings in the connected clock If it is successful it will show a progress bar for a few seconds and then populate all of the values in the 1094 Utility windows See Figure 6 5 Figure 6 5 Reading the 1094B Configuration If for some reason you get a message that the 1094B Utility software could not read the clock make sure to check Settings at the top...

Page 51: ...the backlight will turn on when you touch the keypad and it will turn off after thirty seconds of inactivity Keyboard selects either Enable or Lock where Lock means that the keypad is disabled to prevent unauthorized use GPS Configuration Sets the Survey Mode to Power ON or OFF Power On performs a number of surveys every time the clock power is cycled on Cable Delay sets delay to a number of nanos...

Page 52: ...select Unit Clear Events or click the X icon on the right above the Prog Pulse A tab see Figure 6 7 While broadcasting event records the buffer will continually be overwritten with new data Therefore you would not need to use the Clear feature while broadcasting event data Figure 6 7 Clearing Events in the 1094B ...

Page 53: ...ation Settings Screen DEFINITIONS COM Port Configuration Allows for configuring COM Port parameters using this software utility Sets baud rate word length parity and stop bits 1094B ports do not use flow control Broadcast Configuration Set Message Type according to the list of configured broadcast messages Custom messages may also be configured Set broadcast rate and broadcast time reference to ei...

Page 54: ...aylight Saving Time In 2007 the U S Federal Government changed the start and stop dates to increase the number of days alloted to Daylight Saving Time DST Prior to the change DST started at 2 00 a m the first Sunday of April and ended at 2 00 a m on the last Sunday of October Currently DST starts at 2 00 a m on the second Sunday of March and ends at 2 00 a m on the first Sunday of November The res...

Page 55: ...nstance of unmodulated IRIG B Figure 6 10 IRIG B Adjustment Screen IRIG B Connection Timing Information For additional information on time codes IRIG B and connecting the Model 1094B to other equip ment please go to Chapter 8 Additionally several application notes and white papers address connection issues in more depth and are listed below These may be obtained from the Arbiter website at http ww...

Page 56: ...Pulse per Hour 4 Pulse per Day 5 Single Trigger 6 Slow Code and 7 Seconds per Pulse Polarity Pulses may be set to transition positively or negatively Alarm Time Mark Specify the time and date UTC or Local for a pulse event Pulse Width Pulse width may be specified in 10 millisecond increments up from 10 milliseconds 0 010 seconds to a full 24 hours Pulse Delay Pulse Delay works in most modes except...

Page 57: ...from Channel A Figure 6 12 Programmable Pulse B Setup Screen Modes 1 Off 2 Pulse 3 Frequency and 4 IRIG B Pulse Mode Types 1 Pulse per Second 2 Pulse per Minute 3 Pulse per Hour 4 Pulse per Day 5 Single Trigger 6 Slow Code and 7 Seconds per Pulse Frequency Set frequency from 1 to 1000 in pulses per second no other settings are available Pulses have 50 percent duty cycle IRIG B Select IRIG B as Mod...

Page 58: ...firmware configuration to factory defaults follow the instructions enumerated below After resetting you can use the 1094 Utility to save the default configuration to file 1 Power ON the Model 1094B 2 Press the SETUP key when you see the first message displayed on the LCD and display message should change to SET FACTORY DEFAULTS PRESS ENTER 3 Press the Enter key and the message should change to ARE...

Page 59: ...fy icon During the verification process the program will compare all of the configurations in the Model 1094B with those of the file A progress bar will indicate the comparison At the end a window will appear and identify any items that did not match 4 With no verification problems the Model 1094B should now be updated Programming Multiple Units 5 If you have multiple units to program you should b...

Page 60: ...s that of the 1094B 6 Click the blue UP arrow to load the firmware into the Model 1094B Figure 6 15 indicates what you should see after a successful uploading session During the upload process the program will show a progress bar that indicates erasing flash and then uploading the new firmware The process time will vary due to the set baud rate and file size Figure 6 15 Successful Upload of New Fi...

Page 61: ...are two methods of configuring the 1094B 1 Using the lower row of keys on the front panel and 2 remotely by using either COM1 or COM2 For information on configuring the 1094B remotely through either COM1 or COM2 please refer to Chapter 10 Serial Communication and Command Set No Setup Menus Setup Items 1 Serial COM1 Serial 1 Port Parameters and Broadcast 2 Serial COM2 Serial 2 Port Parameters and B...

Page 62: ...ithin the SETUP menu to adjust numerical values downward or to scroll downward through available menu choices Also assists in navigating through main Setup menus in reverse order 7 1 2 Numeric Data Entry Mode Numeric data entry mode is activated anytime you enter a menu that requires a change in numerical value When in this mode the function of the SETUP and ENTER keys change to give left and righ...

Page 63: ...ial COM1 menu press the SETUP key and then the ENTER key After this you will be able to choose between configuring the serial port parameters PORT CONFIG or selecting one of the broadcast options BROADCAST If you select BROADCAST by pressing the DOWN key you will also be able to select the preferred time zone in the broadcasted string either UTC or LOCAL See Figure 7 1 Figure 7 1 COM1 Setup 7 3 Se...

Page 64: ...en in Figure 7 3 Interrogate Mode means that the 1094B is not broadcasting but waiting for a command When you have selected the desired broadcast string press ENTER to apply the broadcast For broadcast strings other than INTERROGATE MODE two menus should follow 1 select the time zone UTC or Local and 2 select the broadcast rate 1 to 9999 seconds between successive broadcasts depending on type of b...

Page 65: ...SERIAL COM2 menu immediately follows the SET SERIAL COM1 menu Another method of directly entering the SET SERIAL COM2 menu is to press the SETUP key twice 7 4 Set Local Offset The Local Offset equals the difference in time in 15 minute increments from UTC or GMT to your time zone Locations west of the Prime Meridian have negative offsets and locations east of the Prime Meridian have positive offse...

Page 66: ...Local Offset menu follow the menus below to complete the DST setup After setting the Local Offset there are two basic values that are necessary to complete this configuration DST Start Date and Time DST Stop Date and Time The menu in Figure 7 6 illustrates how to set up the Start Date and Time The Stop Date and Time menus are nearly identical except that the menus say STOP instead of START the sto...

Page 67: ... first operates at startup During startup the 1094B will immediately trigger an out of lock alarm since the clock is not locked to the GPS and the time is not accurate See Figure 7 7 Figure 7 7 Out of Lock Time Setup 7 7 Set Backlight The backlight function in the Model 1094B can be set to operate in three modes Always ON Always OFF and Automatic Shutoff AUTO AUTO is the most recommended setting w...

Page 68: ...7 9 Calculating Cable Delay Use Formula 7 1 below for calculating cable delay for Arbiter supplied RG 6 antenna cables 7 1 T λ 1 CKv 1ns Where T Cable delay in nanoseconds λ Cable length in meters C Speed of light 3 108 meters per second Kv Nominal velocity of propagation 0 85 One nanosecond is added to the calculated value to account for the length and velocity factor of the short connecting cabl...

Page 69: ...s on the hour and 2 seconds on the minute Seconds Per Pulse pulses occur after the chosen number seconds have elapsed from 0 to 60 000 programmed in 10 millisecond increments 7 9 2 Programmable Pulse B Programmable Pulse B has all of the features of Programmable Pulse A but also includes Frequency Mode allows the 1094B to produce a square wave on the chosen port from 1 to 1000 pulses per second 50...

Page 70: ... is adjustable in 10 millisecond increments from 0 01 to 600 seconds See Figure 7 10 Figure 7 10 Programmable Pulse Setup Preliminary Information 7 9 5 Setting the Pulse Per Second Mode Use the Pulse per Second mode to produce a pulse every second at the set number of fractional seconds after the top of the second Adjust the time delay after the on time second mark at which the pulse will occur De...

Page 71: ...ulse Setup Pulse Per Minute Note Pulse width can be set in 10 millisecond increments from 0 01 to 59 99 seconds otherwise it is set to 0 01 7 9 7 Setting the Pulse Per Hour Mode Use the Pulse Per Hour mode to produce a pulse every hour at the set number of seconds and fractional seconds after the top of the hour See Figure 7 13 Figure 7 13 Programmable Pulse Setup Pulse Per Hour Note Pulse width c...

Page 72: ...te Pulse width can be set in 10 millisecond increments from 0 01 to 600 seconds 7 9 9 Setting the Single Trigger Mode Use the Single Trigger mode to trigger a pulse once per year at a specific day of the year and time of day Setup menus include entries for Julian Day Hour Minute Second and Fractional Seconds To configure Single Trigger mode settings follow the procedure illustrated in Figure 7 15 ...

Page 73: ...lse Polarity as Positive in a previous menu it will be changed to Negative See Figure 7 16 Figure 7 16 Programmable Pulse Setup Slow Code Mode 7 9 11 Setting the Seconds Per Pulse Mode Use the Seconds Per Pulse mode to trigger a pulse after the chosen number of seconds up to 60 000 seconds Values evenly divisible by 60 will be on the minute values evenly divisible by 3600 will be on the hour Setti...

Page 74: ...roup of relays may require UTC time and others may require the Local time Also this feature allows you to set up one output with the IEEE 1344 ON and OFF for the others To use the Aux IRIG Mode you must select Programmable Pulse B from the main menu and set internal jumpers for Output 3 and or Output 4 See Figure 7 19 Figure 7 19 Programmable Pulse Setup Aux IRIG B Mode Before configuring this opt...

Page 75: ... to UTC or Local and 2 having the IEEE 1344 extension turned ON or OFF To transmit the IRIG B time code in the UTC time zone the time will be offset from your local time determined by your locale IEEE 1344 extension increases the amount of information contained in the time code including the two digit date and time quality To use the IEEE 1344 your receiving equipment e g relays RTU s etc must be ...

Page 76: ... it is locked to the GPS and continue to refine the surveyed position The survey may also be turned off at any time by selecting Turn Off Survey from the front panel The Auto Survey averages a total of 10 000 slightly over 2 1 2 hours valid 2D and 3D position fixes If the averaging process is interrupted the averaging resumes where it left off when tracking resumes Once the position is surveyed th...

Page 77: ... one pulse per second 1 PPS signal Figure 7 22 Event Configurations Note If you are configuring for event capture the next menu will allow you to clear any previously stored events CLEAR EVENT DATA YES UP NO DOWN NOTE Events may also be cleared using serial port 1 or 2 See Section 10 3 5 7 12 1 Technical Details of Event Deviation Timing For additional technical details on Event and Deviation timi...

Page 78: ...ming signal Sometimes you will need to set a physical jumper or configure it through the instrument setup program Some equipment can auto detect the timing signal so that nothing else is required other than connecting the cable 8 2 Timing Output Description The rear panel of the Model 1094B includes a number of different types of connectors as illustrated in Figure 8 1 Starting from the right hand...

Page 79: ...put channel should be able to support 25 identical devices 8 2 3 Analog Drivers Each of the four outputs also has a separate analog driver to be used exclusively for modulated IRIG B signals The analog driver is an Analog Devices AD8532 single supply dual output amplifier which supplies a 4 5 Volt peak to peak Vpp signal through a 19 6 ohm source resistor As the load current increases by adding ex...

Page 80: ...e Model 1094B transmits Format B with four variations as seen in Table 8 2 Note that with the newer IRIG Standard 200 04 two of the designations have changed the older B000 has become B004 and B120 has become B124 Code Old New Signal Type Code Components B000 B004 Pulse width code No carrier BCDT OY CF SBS B003 Pulse width code No carrier BCDT OY SBS B120 B124 Sine wave modulated 1 kHz BCDT OY CF ...

Page 81: ...AR Leap seconds and Leap seconds pending Daylight saving time DST and DST pending Local time offset Time quality Parity Position identifiers To be able to use these extra bits of information relays RTU s and other equipment receiving the time code must be able to decode them Consult your equipment manual to determine if the IEEE 1344 feature should be turned ON in the Model 1094B To view details o...

Page 82: ...es yes Slow Code yes yes Frequency Mode no yes Aux IRIG Mode no yes Table 8 3 Programmable Pulse Output Functions 8 3 6 Programmable Pulse with 300 Volt FET Setup With this setting you can perform high level switching at any of the four timing outputs setting the 1094B to trigger a pulse at the required time of day or time interval Connect a voltage of up to 300 volts and pull down a signal with t...

Page 83: ...losses in cabling 2 electromagnetic interference 3 propagation delays and 4 installation and main tenance costs For details on distributing IRIG B signals over long distances see application note AN101 Dis tributing Timing Signals in a High EMI Environment Download file appnote101 pdf at the follow ing link http www arbiter com ftp datasheets For important considerations about IRIG B connections d...

Page 84: ...sistor across the load would increase the output current by 100 mA however it would require a resistor that would handle that load Consider using at least a 1 Watt resistor in this example Two possibilities exist 1 placing a loading resistor across the load itself and 2 placing a source resistor in series at the output of the clock A source series resistor would also tend to drop the available vol...

Page 85: ... cable and to carefully distribute the loads For example the resistance for 18 AWG bare enamel coated copper wire is 6 38 ohms per 1000 feet 8 4 7 Voltage Matching for Modulated IRIG B With modulated IRIG B it was mentioned that certain decoders are very intolerant of drive voltage variation If the IED specification says that the acceptable voltage range is 3 3 Vpp 0 5 volt and the available volta...

Page 86: ...83 to delay the signal by one microsecond For IRIG B timing applications these delays may not be important compared to other criteria Otherwise you would be forced to compensate for the time delay using another method such as advancing the timing output or placing another master clock at the remote site 8 4 9 Solutions There are many solutions to providing an accurate timing signal in distant loca...

Page 87: ... See Section 5 3 for more information on configuring these jumpers 9 3 Fault Conditions If the FAULT LED illuminates the clock status message will change to read CLOCK STATUS ERROR message Where message one of the error messages listed below 1 Receiver Failure no communication between clock and GPS Receiver 2 Antenna Short antenna voltage is very low it is normally 5 Vdc 3 Antenna Open antenna not...

Page 88: ...tings see Section 5 5 Configuring Event Input Jumpers and Sec tion 7 12 Set Event Deviation 9 7 Event Timing Inputs The Model 1094B provides one dual function event input channel with 1 microsecond resolution at three possible input connectors dedicated event input connector COM1 or COM2 The event input channel may be used to time an input signal or continuously measure the 1 PPS deviation Data fo...

Page 89: ...ord will be overwritten once every 300 seconds Once every second the processor looks at the most recent group of 16 events To compute devi ation it uses only the portion of the event data describing fractional seconds e g values between 0 0000000 and 0 9999999 The 16 fractional second values are normalized around 0 0000000 so that the range of results from the deviation computations will be center...

Page 90: ...owing format EVENT nnn ddd hh mm ss sssssss Where nnn event number 001 to 300 ddd day of year of the event 1 to 366 hh hour of the event 00 to 23 mm minute of the event 00 to 59 ss sssssss second and fractional seconds of the event Press the UP or DOWN key to scroll the display through all events presently stored in the event time buffer When you exit and then re enter the event display mode it wi...

Page 91: ...h the front panel keys and 2 through either COM1 or COM2 RS 232 connections Clearing means to completely remove all 300 records at one time This is different than viewing data on the display or viewing data through COM1 or COM2 which actually marks the individual event as having been read and may be overwritten with any new data New events may only be overwritten if you view them sequentially coun...

Page 92: ...g Events Using Serial Commands Type or send 0 123ev or 1 123ev to immediately clear all events stored in the event buffer See Section 10 3 5 Clearing Events Using the 1094 Utility Using the 1094 Utility first connect to the Model 1094B and select Unit Clear Events or click the Clear Events button See Section 6 6 4 ...

Page 93: ...i e to configure something and at the same time be able to have the second serial port broadcasting a specific time code to a meter While most recent substation equipment has standardized on the IRIG B time code some devices are designed to receive ASCII data through the serial port Another common serial port function is to connect a digital wall display to indicate the time 10 2 Communication Por...

Page 94: ... these tables without pressing ENTER Characters are automatically entered when typed If including any of these commands in a programming sequence do not include any carriage return or line feed characters The following symbols and syntax are used throughout and are repeated here for emphasis C Shorthand for carriage return line feed U UTC Time L Local Time soh An ASCII character start of header He...

Page 95: ...ional Seconds 00 99 Hxx Hexadecimal value where xx is a hex value from 00 FF h Hour 00 23 m Minute 00 59 M Month 1 12 O Local hour offset hh where hh 0 12 o Local minute offset 0 59 minutes Pi Latitude where i 1 degrees dd 2 Min utes mm 3 Fractional minutes mmmm 4 Seconds ss 5 Fractional seconds fff 6 N North or S South pi Longitude where i 1 Degree ddd 2 Minutes mm 3 Fractional minutes mmmm 4 Sec...

Page 96: ...elow illustrate how various strings are specified using the A or B commands In order to create your own custom string you will need to type in characters from Table 10 2 including any conditionals as noted above immediately after A or B The example command below shows how to configure COM1 with the ASCII Standard broadcast from the 1094B using a terminal window Sample Command for ASCII Standard A ...

Page 97: ...re 0 COM1 and 1 COM2 Broadcast Example Set the 1094B to broadcast the Vorne Std output at a rate of once per second in Local time from COM1 Send 2 1 1 0BR To turn off a broadcast Send 0BR for COM1 or 1BR for COM2 Returned Settings After sending certain commands to configure the Model 1094B the clock will return the new settings to the computer or terminal For example after sending 2 1 1 0BR the cl...

Page 98: ...ge format time displays Refer to Arbiter Systems Application Note 103 for more information 2 n o 1BR configures the 1094B to broadcast Vorne formatted data on COM2 Set n equal to your desired broadcast interval in seconds and o according to the desired time zone UTC or Local Response 44hhmmssC UTC Local Time 55dddC day of year 11nnC out of lock time bel bel Hex 07 sounds at the end of the time cod...

Page 99: ...FAILURE Response when fault clears ddd hh mm ss LOCKED C Other messages ANTENNA OK RECEIVER OK Broadcast Mode EXT ASCII Command 5 n o 0BR 5 n o 1BR EXT ASCII or Extended ASCII and adds a time quality indicator to the end of the Standard ASCII time string 5 n o 0BR configures the 1094B to broadcast from COM1 the time of day as ASCII using an extended format prefaced with a time quality indicator Q ...

Page 100: ... n o 0BR 7 n o 1BR YEAR ASCII is the same as ASCII plus Time Quality Indicator adding the four digit year to the beginning of the string 7 n o 0BR configures the 1094B to broadcast from COM1 the year and time of day as ASCII data appended with a time quality indicator 7 n o 1BR configures the 1094B to broadcast from COM2 Set n equal to your desired broadcast interval in seconds and o according to ...

Page 101: ... to broadcast the standard from COM2 Set n equal to your desired broadcast interval in seconds and o according to the desired time zone UTC or Local ZDA Time Date UTC day month year and local time zone Format ZDA hhmmss ss dd mm yyyy xx xxC Where ZDA Time and date hhmmss ss Time in UTC dd Day 01 to 31 mm Month 01 to 12 yyyy Year xx Local zone description 00 to 13 hours xx Local zone minutes descri...

Page 102: ...play from the COM1 11 n o 1BR configures the 1094B to broadcast the Display Buffer from COM2 Set n equal to your desired broadcast interval in seconds and o according to the desired time zone 0 UTC or 1 Local Broadcast PATEK PHILIPPE MSG Command 12 n o 0BR 12 n o 1BR 12 n o 0BR configures the 1094B to broadcast the Patek Philippe Message or CUSTOM 1 from COM1 12 n o 1BR configures the 1094B to bro...

Page 103: ...d o according to the desired time zone 0 UTC or 1 Local Note that in Table 10 3 BST refers to British Standard Time and GMT refers to Grenwich Mean Time now obsolete and essentially the same as UTC Response TyymmdmDhhmmGVccC Example T0206252191701C Example response meaning seven seventeen pm on Tuesday the 25th June 2002 in local time and true time valid character Description No of Characters Char...

Page 104: ...e n 0 sets the event time to UTC and n 1 sets the event time to Local Control Event Operation Command m nEV EV m nEV controls event operation where m 0 sets the Event mode and m 1 sets the 1 PPS Time Deviation mode Use n 0 for commands except that n 123 clears the event buffer EV returns a single event from the Channel A event buffer For example 0 0ev sets the Event Mode 1 0ev sets the 1 PPS Devia...

Page 105: ...empty i e all event data which has been recorded has also been read Clock Status Command SC SC returns the current clock status Response L U U xx S nnC Format L Clock currently locked to GPS U for unlocked xx Indicates loss of lock period up to 99 minutes nn User specified out of lock delay 00 to 99 minutes refer to Table A 8 S Off if the out of lock function is deactivated S ZDL indicates zero de...

Page 106: ...ock locked maximum accuracy 4 Clock unlocked accuracy 1 us 5 Clock unlocked accuracy 10 us 6 Clock unlocked accuracy 100 us 7 Clock unlocked accuracy 1 ms 8 Clock unlocked accuracy 10 ms 9 Clock unlocked accuracy 100 ms A Clock unlocked accuracy 1 s B Clock unlocked accuracy 10 s F Clock failure time not reliable 10 3 7 Local Daylight Saving Time Setup Commands Set Daylight Saving Summer Time Mode...

Page 107: ...ht Saving Summer Command 3 w x y zDT Sets the date and time when Daylight Saving Summer Time stops Where w Month 0 through 11 with 0 Jan 1 Feb 11 Dec x WeekOfMonth 0 through 5 with 0 First 1 Second 2 Third 3 Last 4 Second from Last and 5 Third from Last y DayOfWeek 0 through 6 with 0 Sun 1 Mon 6 Sat z Minutes after midnight z 0 through 1440 Response C Local Offset Command Command mLT mLT sets the ...

Page 108: ...ontrol bits OFF m 1 control bits ON n 0 IRIG Time UTC n 1 IRIG Time Local o 0 IRIG Output on Main o 1 IRIG Output on Aux port Prog Pulse B Response C 10 3 10 Position Data Commands Return Elevation Command LH Returns the current antenna elevation Response nnnnn nnC from 1000 00 to 18000 00 meters WGS 84 Format Where Elevation in meters referenced to the WGS 84 datum n 1000 00 to 18000 00 meters Re...

Page 109: ...nutes of longitude S seconds of longitude h height meters 10 3 11 Date and Time Commands Set Receiver Time Command yyyy mm dd hh mmTS TS sets the receiver UTC time only when not locked to the GPS The command is ignored when locked to satellites When the receiver is initially activated and has not locked onto satellites acquisition time may be improved by giving the clock an initial estimate of UTC...

Page 110: ...lse Command m nPW m nPW configures the Programmable Pulse output pulse width in seconds Where m 0 through 60 000 in 10 millisecond increments gives you from 0 to 10 minutes n 0 for Output A Timing Outputs 1 and 2 n 1 for Output B Timing Outputs 3 and 4 Response C Set Programmable Pulse Output Mode Command m nPM m nPM configures the programmable pulse mode and output port Programmable Pulse A can g...

Page 111: ...ough 6 are the types and n 0 for Prog Pulse A and n 1 for Prog Pulse B For programming details see Section 7 9 Mode m m 0 PULSE PER SECOND m 1 PULSE PER MINUTE m 2 PULSE PER HOUR m 3 PULSE PER DAY m 4 SINGLE TRIGGER m 5 SLOW CODE m 6 SECONDS PER PULSE Response C Set Programmable Pulse Delay Command m nPD m nPD sets the delay between pulses for Seconds Per Pulse mode where m selects the number of s...

Page 112: ...ensation value NOTE Factory default setting for the standard 15 meter 50 foot cable is 60 ns Time range is from 0 to 999999 nanoseconds The exact syntax for a 60 ns delay is 60DA See Section 4 4 1 for information on calculating cable delay Response C 10 3 14 Out of Lock Commands Set Out of Lock Time Command nLK nLK configures the Out Of Lock function in the 1094B A negative number turns the out of...

Page 113: ... mode Set Display Mode Command mDM Sets the display mode to the following for m 0 enables the current status display m 1 2 3 and 4 enables the time displays m 5 6 and 7 enables the position displays m 8 9 and 10 enables status displays m 11 enables event deviation display Return Display Buffer Command DZ Returns the contents of Display Buffer Response Echoes current display 40 characters No line w...

Page 114: ... NOTE Specifications subject to change without notice A 2 Receiver Characteristics A 2 1 Input Signal Type Frequency GPS L1 C A code 1575 42 MHz A 2 2 Timing Accuracy Specifications apply at the 1 PPS output as of date of publication UTC USNO 250 ns peak less than 100 ns typical SA off A 2 3 Internal Oscillator The Model 1094B uses a high performance crystal synchronized to GPS time A 2 4 Position...

Page 115: ...divided between Programmable Pulse A on outputs 1 and 2 and Programmable Pulse B on outputs 3 and 4 The MOSFET output is not electrically isolated from instrument common A 3 2 I O Connectors Each timing output has one BNC and 5 mm pluggable terminal strip in parallel Event Input is BNC and DB 9M A 3 3 Standard Output Signals IRIG B 003 and 000 now 004 unmodulated IRIG B 123 and 120 now 124 modulat...

Page 116: ... 3 RS 232 Tx Data 8 RS 422 485 Tx A 4 RS 232 Output Prog Pulse 9 RS 422 485 Tx B 5 Ground Table A 1 COM1 and COM2 Pin Definitions A 5 2 Communication Parameters Selectable 1200 2400 9600 19200 or 38400 baud 7 or 8 data bits 1 or 2 stop bits odd even no parity Supports all front panel functions A 5 3 Broadcast Data Formats Supports continuous output data in various formats See Chapter 10 Serial Com...

Page 117: ...f the Model 1094B A 5 8 Display 2 line by 20 character backlighted supertwist LCD A 5 9 Display Functions Time UTC or Local Position Latitude Longitude and Elevation Status Clock Receiver EEPROM Antenna 1 PPS input Deviation Event Time Configuration four keys SETUP UP DOWN ENTER A 5 10 Annunciators LEDs Operate green Stabilized green Unlocked red Fault red A 6 Physical Specifications A 6 1 Dimensi...

Page 118: ...4 Power Connector Three pole terminal strip and surge withstand capability Options 8 and 10 A 6 5 Electromagnetic Interference Conducted Emissions power supply Options 07 and 08 complies with FCC 20780 Class A and VDE 0871 6 78 Class A Surge Withstand Capability SWC power inlet Options 08 and 10 designed to meet ANSI IEEE C37 90 1 and IEC 801 4 A 6 6 Temperature and Humidity Temperature Operate Ty...

Page 119: ...her F connector to the GPS receiver in the clock A screw terminal provides a point to connect an earth ground wire Being weatherproof the AS0094500 can be mounted outdoors provided that the cabling and Type F connectors are sealed from the weather The device will also pass the DC current necessary to energize the GPS antenna B 3 Installation B 3 1 Mounting Location Location is a key consideration ...

Page 120: ...es Typically this includes an o ring in the male connector that seats against the face of the female connector on the surge arrester Also crimped connectors frequently include a silicone gel flooding compound which enhances the ability of the connection to withstand the rain and humid conditions To better seal the entire connection cover the joint with GE Silicone II compound or a rubber port seal...

Page 121: ...B 4 Physical Dimensions 107 Figure B 1 Suggested Mounting of the AS0094500 Surge Arrester ...

Page 122: ...Appendix C Statement of Compliance C 1 Introduction The following page is a statement of compliance that includes Model 1094B ...

Page 123: ...oducts are available with all known time synchronization signals presently in use world wide by the electric power industry Arbiter Systems does not supply a type test certificate as requested for G P S systems as the accuracy is a function of the G P S system and not of the receiver However we Arbiter hereby certify that this equipment conforms to all Arbiter Systems Incorporated specifications f...

Page 124: ...o illustrate logging applications D 2 Example 1 300 Volt FET Pull Down Figure D 1 illustrates one method of connecting the 300 Volt FET for a pull down event logging application Use this method with applications when it is acceptable to connect the negative side of the FET to the 1094B chassis ground This application could also be used with a periodic programmable pulse e g 1 Pulse Per Minute for ...

Page 125: ...ent logger had an opto isolator detector and registered an event with application of current through the opto isolator This would correspond with the FET in the ON state so pulse configuration would be Positive Figure D 2 300 Volt FET with Voltage Source in Series D 3 1 Logging Requirements and Circuit Notes To log an event the FET must be switched ON which causes a current to flow through the lar...

Page 126: ...with intermediate switching relay As mentioned in the introduction some applications may require a positive ground or method to isolate the recorder or event logger from the Model 1094B To accomplish this it is simple to place a small switching relay between the clock output and the event logger Since the application requires a positive ground the small relay isolates the clock from the event logg...

Page 127: ...15 mounting assembly 16 mounting kit 15 16 mounting procedure 16 power supplied to 21 user supplied cables 21 voltage 18 voltage check 18 antenna cable testing 18 antenna cable 19 antenna cable effects of cable parameters 19 Appendix A 100 D 108 E 110 cable accessory 20 adjacent signal interference 21 attenuation 20 DC resistance 20 delay 19 delays 71 distance 69 physical protection 20 timing outp...

Page 128: ...cast return string 82 string command 81 string setup 80 Daylight Saving Time 40 defaults resetting to 44 deviation measurement 75 measurement principle 75 digital drivers 65 display startup 28 display modes Position 32 Time 30 drive current vs output voltage 65 driver analog 65 digital 65 elevation display 32 event channel programming 26 setup 26 event display indication 29 event inputs 74 allowab...

Page 129: ...display 32 mounting kit antenna 15 numeric data entry mode 48 54 open drain see 300 Volt FET Option 08 terminals with SWC 8 10 terminals with SWC 8 Options 07 IEC 320 connector 7 power 07 11 power 08 12 power 10 13 output signal description 66 panel rear description 64 panels drawing front 4 rear 7 front 4 rear 4 position display modes 32 datum 32 precautions 1 programmable pulse see configure Aux...

Page 130: ...equency 98 pulse polarity 97 98 set mode 96 set pulse width 96 set time mark 97 return display buffer 99 firmware version 98 local date 95 local time 96 UTC date 96 UTC time 96 return elevation 94 return longitude 95 set com settings 83 display mode 99 receiver position 95 set IEEE 1344 mode 94 set receiver time 95 Status clock 91 EEPROM 91 receiver 91 status of event deviation 91 time quality 92 ...

Page 131: ...up functions 103 standard output signals 101 temperature and humidity 104 timing outputs 101 weight 104 startup sequence 27 Statement of Compliance 108 status display indication 29 surge arrester 18 105 synchronizing multiple devices on one port 69 temperatures 104 time display modes 30 timing outputs description 64 intro 64 title page v unpacking the clock 1 warranty iii WGS 84 32 ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands