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Chapter 8

Serial Command
Reference

8.1

Introduction

The Model 1095A/C has two RS-232 ports and one RS-485 port, with a
set of serial commands for configuring and controlling clock operation.
While many users will choose to control clock operation with the 1095
Utility software (see Chapter 4), others may wish to develop their
own interface program. Consult this appendix for information on how
communicate with and configure the Model 1095A/C without using the
1095 Utility.

COM1 settings are controlled mechanically by the 8-position dip

switch in the center of the main board; settings are indicated in Table 2.1.
COM2 settings are controlled by using the 1095 Utility Application or
using COM Port Settings as described in Section 8.2.4. The COM1 and
COM2 do not use flow control, and the RS-485 port functions in transmit
only mode.

Use the two serial ports interchangeably for separate functions. You

may wish to interrogate the clock on one port for basic information (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. Substation
equipment commonly rely on IRIG-B time code, where others may
receive ASCII data through the serial port. Another common serial-port
function is to connect a digital wall display to indicate the time.

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Содержание 1095A

Страница 1: ...Model 1095A C Industrial GPS Clock Operation Manual Model 1095A Stabilized Fault Operate Unlocked Model 1095C Arbiter Systems Inc Paso Robles CA 93446 U S A www arbiter com ...

Страница 2: ...ving a firmware date of 12 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 date for your instrument connect to the unit with the 1095 Utility Application also called the 1095 Utility It displays the firmware version in the System tab under ...

Страница 3: ...taxes for products returned to Buyer in a country other than the United States of America THE WARRANTY SET FORTH HEREIN CONSTITUTES THE ONLY WARRANTY OBLIGATIONS OF ARBITER SYSTEMS EXPRESSED OR IMPLIED STATUTORY BY OPERATION OF LAW OR OTHER WISE ARBITER SYSTEMS DISCLAIMS ANY WARRANTY OF MER CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND BUYER EXPRESSLY WAIVES ALL OTHER WARRANTIES This limite...

Страница 4: ...he instrument model number and serial number and giving full details of the difficulty Service data or instrument return authorization will be provided upon receipt of this information 2 If instrument return is authorized forward prepaid to the manufac turer If it is determined that the instrument is not covered by this warranty an estimate will be made before the repair work begins if requested S...

Страница 5: ...Chapter 5 Timing Signals IRIG B Event Inputs Chapter 6 Specifications Chapter 7 Using External Antennas Chapter 8 Serial Command Reference Appendix A Conformity with European Union Directives CE Mark Appendix B Statement of Compliance Index Copyright Arbiter Systems Incorporated January 2020 All rights reserved Published by Arbiter Systems Inc PD0039700N v ...

Страница 6: ...nna 5 1 4 4 Model 1095C with External Antenna 6 1 4 5 Clocks with Internal GPS Antenna 7 1 4 6 Clocks with External GNSS Antenna 7 1 4 7 Precautions 7 1 5 Model 1095A C Clock Mounting Kit 7 1 6 Overview of Enclosure 7 1 7 Programming Cable Kit 8 2 Mounting and Wiring 9 2 1 Enclosure 9 2 2 Enclosure Cover Seal 9 2 3 Sealing Cable Port 10 2 4 Mounting the External GNSS Antenna 10 2 5 Display 10 2 6 ...

Страница 7: ...3 Model 1095A Fault Display 25 4 1 4 Model 1095C Fault Display 25 4 2 1095 Utility Application 26 4 2 1 Establishing a Serial Connection 27 4 2 2 Reading Clock Configuration 29 4 2 3 The System Screen 30 4 2 4 The Communication Screen 32 4 2 5 The Time Screen 33 4 2 6 The IRIG B Screen 34 4 2 7 The Programmable Pulse A Screen 35 4 2 8 The Programmable Pulse B Screen 36 4 2 9 The Display Screen 37 ...

Страница 8: ... Cable Delays 50 5 5 Input Signal Timing 51 5 5 1 Event Timing Latency 52 5 5 2 Deviation Measurement 52 5 5 3 Deviation Measurement Principle 52 5 5 4 Connecting Input Signals 53 5 5 5 Setting Event Channel Time 53 5 5 6 Configuring for Event or Deviation Recording 53 5 5 7 Accessing Data 53 5 5 8 Broadcasting Event Data 53 5 5 9 Status of Event or Deviation 54 5 5 10 Clearing Event Records 54 6 ...

Страница 9: ...7 1 9 Antenna Power 66 7 1 10 Cable Connection to External Antenna 66 7 1 11 Cable Connection to Clock 66 7 1 12 User Supplied Antenna Cables 66 7 1 13 External Antenna Clock Cable Testing 67 7 2 GNSS Surge Arrester Kit 67 7 2 1 Description 67 7 2 2 Functions 67 7 2 3 Installation 68 7 2 4 Physical Dimensions 69 8 Serial Command Reference 70 8 1 Introduction 70 8 2 Serial Communication Definitions...

Страница 10: ...EE P1344 88 8 8 Position Data Commands 89 8 8 1 Return Elevation 89 8 8 2 Return Latitude 89 8 8 3 Return Longitude 89 8 8 4 Set Receiver Position 89 8 9 Date and Time Commands 90 8 9 1 Set Receiver Time 90 8 9 2 Return Local Date UTC Date 90 8 9 3 Return Local Time UTC Time 90 8 10 Programmable Pulse Commands 91 8 10 1 Set Pulse Width 91 8 10 2 Set Programmable Pulse Output Mode 91 8 10 3 Set Ala...

Страница 11: ...8 11 5 Set Relay Output Mode 94 8 11 6 Set RS 485 Data Output Mode 94 8 11 7 Set Display Mode 94 A CE Mark Declaration 95 B Statement of Compliance 97 xi ...

Страница 12: ...3 4 Antenna Mounting Bracket 21 3 5 Antenna Mounting with AS0044600 Kit 21 4 1 Model 1095A Startup Displays 23 4 2 Model 1095C Startup Displays 24 4 3 Model 1095A with Startup Fault 25 4 4 Model 1095C with Startup Fault 25 4 5 1095 Utility Application Opening Window 26 4 6 Connecting with the Model 1095A C 28 4 7 Reading the Configuration 29 4 8 Reading the System Screen 30 4 9 Clearing Events 31 ...

Страница 13: ... Tera Term Pro Window COM Port Selection 40 5 1 Connector Terminals 42 5 2 IRIG B Waveforms 45 6 1 Sealing Cable Port 60 7 1 GNSS Surge Arrester 67 7 2 Suggested Mounting of the GNSS Surge Arrester 68 xiii ...

Страница 14: ...ts List 20 5 1 Drive Current vs Voltage 43 5 2 IRIG B Time Code Types Available 44 5 3 Programmable Pulse Modes 47 6 1 Temperature and Humidity List 62 7 1 GPS Cable Data and Accessory Information 65 8 1 Characters used with Custom Strings 73 8 2 Short Table of ASCII Characters 77 xiv ...

Страница 15: ...ction 1 4 3 Model 1095C with external antenna see Section 1 4 4 The following information will assist you with identifying components and accessories for each of the four configurations 1 1 Unpacking While the clock is housed in a rugged case intended for outdoor use handle carefully especially during setup while the cover is removed Some of the components are sensitive to shock and static electri...

Страница 16: ... Mounting Bracket see Section 3 2 5 GNSS Surge Arrester see Section 7 2 Programming Cable Kit AS0067200 consists of adapter AP0007700 and cable CA0023600 Optional small rubber seal for sealing cable port see Section 2 3 and 6 4 4 1 3 1 Initial Programming and Setup Notes For initial programming make use of the Programming Port seen in Fig ures 1 1 1 4 and the Programming Cable Kit discussed above ...

Страница 17: ...indicate clock status as follows 1 Status Green 2 Stabilized Green 3 Unlocked Red 4 Fault Red For a description of the Model 1095A display indications see Section 4 1 1 Figure 1 1 Model 1095A Front Panel with Internal Antenna 2 Model 1095A illustrated in Figure 1 1 shown without cover A transparent smoked cover may be ordered in place of opaque cover 3 ...

Страница 18: ... and four annunciator LEDs that indicate clock status as follows 1 Status Green 2 Stabilized Green 3 Unlocked Red 4 Fault Red For a description of the Model 1095C display indications see Section 4 1 2 Figure 1 2 Model 1095C Front Panel with Internal Antenna 3 Model 1095C illustrated in Figure 1 2 shown without cover 4 ...

Страница 19: ... 3 Unlocked Red 4 Fault Red Clocks with external antenna include a GNSS antenna 6 meters of RG 6 antenna cable and grounding block For a description of the Model 1095A display indications see Section 4 1 1 Figure 1 3 Model 1095A Front Panel with Antenna Connector 4 Model 1095A illustrated in Figure 1 3 shown without cover A transparent smoked cover may be ordered in place of opaque cover 5 ...

Страница 20: ...us as follows 1 Status Green 2 Stabilized Green 3 Unlocked Red 4 Fault Red Clocks with external antenna include a GNSS antenna 6 meters of RG 6 antenna cable and grounding block For a description of the Model 1095C display indications see Section 4 1 2 Figure 1 4 Model 1095C Front Panel with Antenna Connector 5 Model 1095C illustrated in Figure 1 4 shown without cover 6 ...

Страница 21: ... an external antenna see Section 3 2 for additional information Included in the kit are External GNSS Antenna 6 meter RG 6 antenna cable assembly Grounding block 1 4 7 Precautions Note that the optional external GNSS antenna is small and smooth and can be damaged if dropped Use care when handling Remember to store the antenna in a safe place before the final installation to guard against mechanica...

Страница 22: ...onsists of a seven foot length of RJ11 cable and a DB9F to RJ11 adapter This kit allows you to adapt directly from a serial port on a pc to the Programming Port RJ 11 connector at J8 inside the Model 1095A C This port is switchable between the J1 terminals TxD RxD GND and the RJ11 connector using the DIP switch S1 8 For computers equipped with a USB port and no DB 9 serial port use a USB to serial...

Страница 23: ...nclosure design and construction materials cover sealing gasket sealing cable port and optional antenna connector assure weather proof operation For enclosure dimensions see Section 6 6 1 2 2 Enclosure Cover Seal The enclosure cover is retained by self captivating M4 stainless steel screws and integral stainless steel bushings for repetitive assembly disassembly The cover gasket seals with two pie...

Страница 24: ... 1 4 4 With an internal GPS antenna a weather seal covers the optional antenna port 2 5 Display Model 1095A C has four annunciator LEDs that display the following information Operate Stabilized Unlocked Fault The Model 1095C also provides a six digit 7 segment time display with red 20 mm 0 78 in high characters Covering the standard annunciator LEDs the numeric display in the Model 1095C has a sec...

Страница 25: ...ws Figure 2 1 Model 1095A C Mounting Tabs Attached 2 7 Connecting Input Output Wiring This section will assist you with connecting all input and output signals to the Model 1095A C clocks All standard input and output signals are routed through the sealing cable port at the bottom of the clock housing this includes inlet power 2 7 1 Internal Antenna Operation No antenna wiring is required when equ...

Страница 26: ... on antenna mounting and reception 2 7 3 Installing Main Wiring This section will guide you through the installation of the cabling through the sealing cable port to the connector block terminals Figure 2 2 Connector Block Wiring 1 Remove the retaining nut washer and rubber seal from the sealing cable port housing inserting them over the cable 2 Strip back the cable jacket covering with enough wir...

Страница 27: ...dentify and connect your chosen signal wires RS 232 COM1 Connect to terminals TxD RxD and GND or RJ11 Programming Port Configurable only with dip switches positions are indicated in Table 2 1 RS 232 COM2 Connect to terminals TxD RxD and GND Configure using the 1095 Utility Application see Section 4 2 RS 485 Transmit only Connection to RS485 A and RS485 B only half duplex Event Input Three input ra...

Страница 28: ...This port cannot be configured through the serial port like COM2 Table 2 1 covers the settings for each switch e g Sw1 Default Settings Baud Rate Sw1 Sw2 Sw3 Parity Sw4 Sw5 1200 ON OFF ON ODD ON OFF 2400 ON ON OFF EVEN OFF ON 4800 ON ON ON NONE OFF OFF 9600 OFF OFF OFF 19200 OFF OFF ON 38400 OFF ON OFF 57600 OFF ON ON 115200 ON OFF OFF Data Bits Sw6 Stop Bits Sw7 7 ON 1 OFF 8 OFF 2 ON COM1 Connect...

Страница 29: ...te through the Programming Port J8 you must have Sw8 in the ON position In the OFF position COM1 is connected through the terminal block J1 TxD RxD GND Verify all the other communication port settings so that they match those of the 1095 Utility Application Baud rates are from 1200 to 115200 see Table 2 1 Default port settings are 9600 baud 8 data bits 1 stop bit and NO parity For more information...

Страница 30: ...em recovery The Model 1095A C achieves its accuracy by comparing the internal clock signal to the incoming GPS signals Since the 24 active GPS satellites are constantly moving across the sky in their orbits they move into and out of position for reception Besides providing time to the Model 1095A C a composite signal from each satellite also gives information regarding the health of the satellite ...

Страница 31: ...e few if any that are blocked Even those that are blocked will eventually move into view as others may move out of view Under most circumstances a pole will not block enough satellites for the Model 1095A C to lose synchronization Note that once the Model 1095A C is locked with a good geographical position it should stay synchronized with only one satellite in view Panel Mounting Use the included ...

Страница 32: ...e to identify and track these satellites as they move across the sky and decide which satellites are the most desirable to use for positioning and timing data Note that Figure 3 1 depicts GPS satellites in a two dimensional frame and as such is inaccurate A true representation of GPS satellite positions would be three dimensional and would have satellites scattered all over the sky moving in diffe...

Страница 33: ...ludes 2 male F connectors Figure 3 2 Grounding Block 3 2 2 Using the Grounding Block Bolt the grounding block to an earth ground or ground using a short length of 8 14 AWG wire between the grounding block and earth ground Connect the antenna cable between the GNSS antenna and the grounding block Also included with the Grounding Block Kit are two RG 6 connectors for splicing in the grounding block ...

Страница 34: ...tenna Mounting Kit P N AS0044600 see Figure 3 5 includes several items including the mounting bracket see Figure 3 4 The hardware 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 ...

Страница 35: ...Figure 3 4 Antenna Mounting Bracket Figure 3 5 Antenna Mounting with AS0044600 Kit 21 ...

Страница 36: ...con necting power Verify connection by referring to Figure 2 2 2 Clocks with Internal Antenna Position the clock so that it can receive GPS signals Sometimes being positioned against a window will allow reception of GPS signals for synchronization For best GPS reception follow the guidelines in Chapter 3 Clocks with External Antenna For clocks using external GNSS antennas make sure that the antenn...

Страница 37: ...e indications will only be visible with the opaque clock cover removed With a transparent cover they are visible with the cover in place Lock and stabilization times above depend greatly on satellite reception and are under fairly ideal circumstances2 Figure 4 1 Model 1095A Startup Displays 1 It normally takes about four minutes to stabilize after achieving GPS lock 2 Clock or antenna should be mo...

Страница 38: ...hen zeros After a short time of tracking satellites the Unlocked LED should go out and the time display will begin counting After a few minutes3 of operation while being locked to the GPS the green Stabilized LED should light up and the Model 1095C should display the correct time Figure 4 2 Model 1095C Startup Displays 3 It normally takes about four minutes to stabilize after achieving GPS lock 24...

Страница 39: ...long with the Operate and possibly the Unlocked LED Figure 4 4 below illustrates the clock display without antenna connected Figure 4 4 Model 1095C with Startup Fault Fault Messages The Model 1095A C can supply via either COM port a fault message that identifies the fault Possible fault messages are 1 None 2 Receiver failure 3 Antenna Short 4 Antenna Open To check for a specific fault use the FA c...

Страница 40: ...ound under Downloads and the product 1095 Because the 1095 Utility runs on Python it does not need to be installed Double click the icon and the program should start as illustrated in Figure 4 5 Figure 4 5 1095 Utility Application Opening Window NOTE It is not necessary to have the Model 1095A C locked synchronized to the GPS to configure it using the 1095 Utility Time and position data however wi...

Страница 41: ...r the table below Make sure to set the DIP switch SW8 to OFF Using the COM2 Port at J1 Connect wiring according to the table below DIP switches at SW8 do not affect COM2 Configure COM2 port parameters using COM1 and the Utility application PC DB 9 Pins 1095A C J1 Terminals 3 Tx TxD 2 Rx RxD 5 Gnd GND Connecting 1 Remove the cover and connect the desired cable depending on which connector you choos...

Страница 42: ...Using USB to Serial Adapters If for some reason the 1095 Utility does not connect properly with the Model 1095A C then use the Windows Device Manager to verify which COM port Windows is using If needed reassign the COM Port to an unused number 28 ...

Страница 43: ... immediately try to read 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 1095 Utility windows See Figure 4 7 Figure 4 7 Reading the Configuration If for some reason you get a message that the 1095 Utility could not read the clock make sure to verify the following 1 Configure the correct COM port on your pc 1095 Utilit...

Страница 44: ...elects the signal that drives the relay contacts choices are Fault Out of Lock ProgPulseA ProgPulseB Stable and Event In RS 485 Out selects the type of signal transmitted by the RS 485 driver including TXDCOM1 TXDCOM2 IRIG B Prog Pulse A Prog Pulse B 1PPS Unlocked and Event In GPS Configuration Sets the Survey Mode to Power ON or OFF Sets the Cable Delay to a number of nanoseconds dependent on the...

Страница 45: ...r To clear all events stored in the event buffer select Units Clear Events or click the X icon on the right above the Prog Pulse A tab See Figure 4 9 It is not possible to clear individual events Figure 4 9 Clearing Events 31 ...

Страница 46: ...ast Messages Select from a list of broadcast messages or a custom broadcast message which may be created through the scripting as described in Section 8 2 1 Broadcast Choices Interrogate ASCII Standard Event Data Vorne Standard Status Extended ASCII ASCII plus Quality Year plus ASCII NMEA183GLL NMEA183ZDA ABB_SPA_MSG Patek Philippe and Kissimmee For information on configuring a custom string pleas...

Страница 47: ...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 result is an additional 4 5 weeks allot...

Страница 48: ...2 8 providing a separate and independent instance of unmodulated IRIG B Figure 4 12 IRIG B Adjustment Screen IRIG B Connection Timing Information For additional information on time codes IRIG B and connecting the Model 1095A C to other equipment please go to Chapter 5 Addi tionally several application notes and white papers address connection issues in more depth and are listed below These may be ...

Страница 49: ...ulse 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 Specified in 10 millisecond increments up from 10 milliseconds 0 010 seconds up to a full 24 hours depending on Mode Pulse Delay Pulse Delay works in most modes except in Alarm Time M...

Страница 50: ...se 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 Mode and go to IRIG tab Channel B to set up IRIG B preferences IRIG B from Channe...

Страница 51: ...usts the brightness based on the ambient light Time Reference Select either UTC or Local so that the display will indicate either UTC time or your local time Local time is determined by choosing the correct Local Time Offset for your locale and Daylight Saving adjustment if applicable in the Time screen see Section 4 2 5 Brightness For manual brightness control set the Mode to ON and adjust the sl...

Страница 52: ...A C The 1095 Utility will read the file and populate all of the configuration items in each tabbed display 2 Select Unit Write or click the Write icon and the progress window should indicate that the file is being written to the unit 3 At the end you can verify that the new configuration matches the file by selecting Unit Verify or by clicking the Verify icon During the verification process the pr...

Страница 53: ...al 1 Start HyperTerminal give your connection a name e g 1095A and select Connect Using and choose the correct COM port for your computer 2 In the COM Properties window choose the same properties as you have set on the Model 1095A C Under Flow Control choose None Figure 4 16 HyperTerminal Window Port Settings 3 You should be looking at an open terminal window with a blinking cursor 4 Type in the c...

Страница 54: ...iter com misc_software Connecting with Tera Term Pro 1 Start Tera Term select the Serial radio button and choose the correct COM port number for your computer Figure 4 17 Tera Term Pro Window COM Port Selection 2 Under Setup check Serial Port and verify that the baud rate and other settings agree with your Model 1095A C 3 Type in the characters VE and the Model 1095A C should return the firmware v...

Страница 55: ... far can you transmit timing signals What type of cabling and connectors should I use The steps involved in synchronizing your devices to the GPS are fairly simple and should not take long to complete To expedite the process make sure that you know 1 the type of timing signal each piece of equipment requires and 2 how to enable the equipment to receive the timing signal Various methods are used to...

Страница 56: ...ted in Figures 1 1 and 1 2 Connections themselves are at J1 J2 J3 and J8 as illustrated in Figure 5 1 same as Figure 2 2 Generally there is a power inlet voltage timing output signals and some communication path e g RS 232 If you ordered an external antenna there will be an optional type F connector mounted next to the sealing cable port Figure 5 1 Connector Terminals 42 ...

Страница 57: ...n support you will need to sum the individual load currents for each device connected to the Model 1095A C Greater loads tend to improve the voltage stability 5 2 3 Analog Drivers The Model 1095A C has one analog driver available exclusively for modulated IRIG B signals The analog driver supplies a 4 5 Volt peak to peak signal through a 19 6 ohm source resistor to connected equipment As the load c...

Страница 58: ...ear hours minutes seconds year and other important information The Model 1095A C transmits Format B with four variations as seen in Table 5 2 Code Signal Type Code Components B000 Pulse width code No carrier BCDT OY CF SBS B003 Pulse width code No carrier BCDT OY SBS B120 Sine wave modulated 1 kHz BCDT OY CF SBS B123 Sine wave modulated 1 kHz BCDT OY SBS IEEE 1344 ON IEEE 1344 OFF Table 5 2 IRIG B...

Страница 59: ...ween modulated and unmodulated IRIG B You will notice that while modulated IRIG B is distinctive because of the 1 kHz sinewave carrier it is similar to unmod ulated IRIG B since the peak to peak values of the carrier follow the same form as the digital waveform where the information is contained ON TIME 1 PPS IRIG B B000 REFERENCE REFERENCE IRIG ZERO IRIG B B120 IRIG ONE Unmodulated Modulated Figu...

Страница 60: ...please use the link to the Arbiter web site and look under Timing and Frequency then Application Notes http www arbiter com resources documentation php 5 3 4 1 Pulse Per Second 1 PPS A one pulse per second timing output signal is very simple in concept It is a digital bit transmitted every second with a pulse width of 10 milliseconds Probably the most critical part of this signal is that the risin...

Страница 61: ...095A C series clocks have two rows of internal screw terminals J1 and J2 To mount wiring to screw terminals prepare the cable by stripping back at least 1 4 of the insulation and any shielding and DO NOT tin the bare wire with solder To attach wires to terminals first loosen the screw counter clockwise insert the wire then turn clockwise to tighten Ground the shield if present to the GND ground co...

Страница 62: ...odulated IRIG B output make sure that the loads are wired in parallel Sometimes this method is called daisy chaining however the idea is to drive all loads in parallel from the single output It is much simpler to connect loads to unmodulated IRIG B than for modulated because all of the loads should require the same voltage To determine load current for one Unmodulated IRIG B output 1 determine the...

Страница 63: ...tance 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 increasing the load current i e number of loads affects the available drive voltage at the clock output See also Table 5 1 5 4 6 Wire Losses Wire losses affect the available timing signal voltage appli...

Страница 64: ... suppose that the available voltage is 4 5 Vpp Voc the nominal acceptable voltage is 3 3 Vpp and the device current is 10 mA Determine the dropping resistor value First you must determine the modulated output voltage at 10 mA of drive current Next you can calculate the value for the dropping resistor Rdrop as seen in Calculations 5 4 and 5 5 5 4 Vout Voc Rsource Idev 4 5 0 196 4 304 V olts 5 5 Rdr...

Страница 65: ...cable distribution system and compare it to your required accuracy As an example 840 feet of RG 6 cable with a velocity factor of 83 would delay the timing signal by approximately 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...

Страница 66: ...Measurement Principle The measurement technique employed for 1 PPS Deviation uses the same time determination and recording scheme used for Event Time measurement see Section 5 5 2 but makes the assumption that the input signal is periodic and continuous Also the operation of the circular memory buffer is modified somewhat in that recording does not stop after the first 300 events new event data i...

Страница 67: ...al program using the m nEV command to configure the Event or Deviation function For example 0EV configures the Event Mode and 1EV configures it to the Deviation Mode 5 5 7 Accessing Data Event data is only accessible through COM1 or COM2 using a terminal program and the serial commands Broadcast Event nED or EV Event or deviation data is not accessible through the 1095 Utility Use nED with n 1 to ...

Страница 68: ... 1095 Utility click the X icon or select Unit Clear Events Alternatively use a terminal program connected to COM1 or COM2 see below Clearing means to completely remove all 300 records at one time New events may be overwritten only if you view them sequentially counting from Event 001 For information on clearing the event buffer see Section 4 2 3 and 8 4 3 Viewing individual event data marks them a...

Страница 69: ...te and configure both models through RS 232 ports and included 1095 Utility software For indoor mounting both Model 1095A and 1095C may be ordered with an external GNSS antenna cable and grounding block 6 2 Receiver Characteristics 6 2 1 Timing Accuracy Specifications apply at the 1 PPS and unmodulated IRIG B outputs with US Department of Defense Selective Availability SA OFF as of date of publica...

Страница 70: ...4 5 Vpp through 19 6 ohm source resistor all terminal strip connectors Output 1 Programmable Pulse A Output 2 IRIG B00x level shift Output 3 Programmable Pulse B Output 4 IRIG B12x analog 6 3 2 Programmable Pulse Output Two programmable pulse outputs Prog Pulse A and Prog Pulse B are available at separate terminal connectors Modes Most pulse modes listed below allow an adjustable pulse width and p...

Страница 71: ... Single Trigger once per year Seconds per Pulse 1 to 1000 PPS square wave Prog Pulse B only Aux IRIG Mode Prog Pulse B only 57 ...

Страница 72: ...e offset via remote IRIG Setup Local UTC 1344 ON or OFF interface Daylight Saving Time On Off Auto Event input Event 1 PPS deviation Programmable Pulse setup Antenna Cable delay Out of lock time 1 to 99 minutes s Off or Zero delay Power ON Survey or OFF RS 232 Serial ports 2 ea called COM1 COM2 COM1 DIP Switches COM2 RS 232 through 1095 Utility 6 4 2 System RS 232 1200 2400 4800 9600 19 200 38 400...

Страница 73: ...ire connections to the clock This section gives additional information on the sealing cable port and the connector block Selected Connector Block Terminals Specifications Screw thread M 3 Tightening Torque 0 5 N m Insulating Material Group I Rated surge voltage 4 kV III 3 III 2 II 2 Rated voltage 320 V III 2 640 V II 2 Connection STD EN VDE Conductor solid 0 14 mm to 2 5 mm 0 006 in to 0 098 in Co...

Страница 74: ...able port for wiring all signals and power to and from the Model 1095A C Multi conductor cable can be sized so that the sealing cable port will seal when tightened One such cable that works is Belden 9747 audio control and instrumentation cable Belden 9747 has 12 pairs of 22 AWG stranded wire with PVC insulation and a PVC jacket The nominal outer diameter is 0 425 inches Figure 6 1 Sealing Cable P...

Страница 75: ...Hummel part no 1 609 1200 70 Cover Screw Torque 30 cN m 2 5 lbf in 61 ...

Страница 76: ...hipping Sealing Cable Accepts multi conductor cable with an OD from Port 6 mm to 12 mm 0 236 in to 0 470 in Degree of IP65 IEC 60529 Protection NEMA 1 2 4 4x 12 13 6 6 2 Environmental Temperature Operating Storage Instrument 40 C to 85 C 40 C to 85 C Antenna 40 C to 85 C 55 C to 100 C external Antenna Cable 40 C to 75 C 40 C to 80 C external Humidity 10 to 90 10 to 90 non condensing non condensing...

Страница 77: ...ife of the antenna to cable interface 7 1 1 Length and Loss Considerations When ordering an external antenna with the Model 1095A C you will also receive a 6 meter 20 foot length of RG 6 type low loss coaxial cable terminated with male Type F connectors and a grounding block Optional lengths of RG 6 coax are separately available see Table 7 1 Cable Data and Accessory Information or call the factor...

Страница 78: ... 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 of the short connecting cable inside of the clock 7 1 4 Attenuation Attenuation depends upon the cable length and the loss per unit length The total attenuation must be lim...

Страница 79: ...0044800 RG 11 Kit and crimp tool N A N A AS0044700 21 dB in line amplifier 1 ns 21 dB Table 7 1 GPS Cable Data and Accessory Information 7 1 7 Physical Protection When routing the antenna cable protect it from physical damage which may result from closing doors falling objects foot traffic etc Also when routing around corners allow for sufficient bend radius to prevent kinks Extra length should be...

Страница 80: ...short or open circuit condition in the antenna cable will render the clock inoperable 7 1 10 Cable Connection to External Antenna The male Type F connector on one end of the antenna cable mates with the female Type F connector on the antenna Avoid placing mechanical stress on the cable attachment to the antenna 7 1 11 Cable Connection to Clock The male type F connector on the opposite end of the a...

Страница 81: ...00 is compatible with the external antenna option only There is no external surge protection available for the Model 1095A C with an internal antenna Antenna Receiver Surge Arrester Grounding Block AS0094500A Figure 7 1 GNSS Surge Arrester 7 2 1 Description The GNSS Surge Arrester is a three terminal device with two type F connectors and one ground terminal One F connector connects to the GNSS ant...

Страница 82: ...ely and reliably it will bypass the induced voltages Figure 7 2 illustrates the recommended mounting with the F connectors facing downward Install drip loops in the cables to reduce the likelihood of moisture penetration Figure 7 2 Suggested Mounting of the GNSS Surge Arrester Antenna and Clock Connections The GNSS Surge Arrester terminal are labeled to indicate which termi nals connect to the GPS...

Страница 83: ...ection is provided by placing all connections in appropriate weather tight boxes If this level of protection is not available then weatherproof type F connectors and proper tools for preparation and crimping compressing will provide some protection Consider purchas ing RF cables of various standard and custom lengths manufactured by Arbiter Systems 7 2 4 Physical Dimensions Overall 59 mm 38 mm 18 ...

Страница 84: ...ter of the main board settings are indicated in Table 2 1 COM2 settings are controlled by using the 1095 Utility Application or using COM Port Settings as described in Section 8 2 4 The COM1 and COM2 do not use flow control and the RS 485 port functions in transmit only mode Use the two serial ports interchangeably for separate functions You may wish to interrogate the clock on one port for basic ...

Страница 85: ...1 1 1 0BR When a command requests information from the Model 1095A C it returns the most current data available Numeric data is returned as an ASCII string of numeric characters with leading sign and embedded decimal point as needed Strings are usually terminated with carriage return and line feed characters Enter any RS 232C command as written in these tables without pressing ENTER Characters are...

Страница 86: ...0BR starts broadcasting the configured string at a rate of once per second in UTC from COM1 1 5 1 1BR starts broadcasting the configured string at a rate of once every five seconds in Local time from COM2 0BR 1BR 0BR stops broadcast at COM1 1BR stops broadcast from COM2 2BR 3BR 2BR returns COM1 settings 3BR returns COM2 settings Custom String Command Command A B Use A to configure a custom broadca...

Страница 87: ... degrees dd 2 Minutes mm 3 Fractional minutes mmmm 4 Sec onds 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 Seconds ss 5 Fractional seconds fff 6 E East or W West r Carriage return and line feed Sii String Type where ii 01 Status change receiver out of lock antenna short antenna open s Seconds 00 59 Txx On time character...

Страница 88: ...mpare the output with the standard method of activating that string i e using the 1095 Utility as in Section 4 2 4 For example to activate the ASCII Standard broadcast in UTC time zone at 1 broadcast per second from COM1 you would type 1 1 0 0BR Three elements are specified throughout the tutorial examples 1 The desired output string is shown first 2 Next follows the input string code required to ...

Страница 89: ...e feed 55 immediately follows the r then a d for Julian day followed by another r 11 immediately follows the r followed by a U for unlock time and r for another carriage return line feed Lastly the T07 specifies the on time character as the Hex 07 which sounds the bel in the machine Note that the 44 55 and the 11 are not preceded by a since they are printed as characters Status Desired String ddd ...

Страница 90: ...hree fractional second digits and three spaces ASCII Quality Desired String soh ddd hh mm ssQC Input String Code T01 d h m s 01 r Input String Constructions Notes Note that the ordinary method of starting any broadcast is using the 1095 Utility see Section 4 2 4 This string is very similar to the Standard ASCII described earlier appended with a quality indicator Q All of the notes under ASCII Stan...

Страница 91: ...able characters may be typed in as seen on a keyboard Decimal Hex Abbreviation Description 0 00 NUL Null Character 1 01 SOH Start of Header 7 07 BEL Bell sound 10 0A LF Line Feed 13 0D CR Carriage Return Table 8 2 Short Table of ASCII Characters Preconfigured Broadcast Strings Additional preconfigured strings are available from the 1095A C by selecting them from the Communication tab in the 1095 U...

Страница 92: ... the 1095 Utility Communications panel or from a terminal program Response soh ddd hh mm ssC Broadcast Event Data Configures to broadcast event data a new string for each new event It will continue to broadcast events as long as it is configured to do so and new events are being recorded Response Local mm dd yyyy hh mmP ss sssssss nnnALC UTC mm dd yyyy hh mmP ss sssssss nnnAUC Broadcast Vorne Stan...

Страница 93: ...imum accuracy ASCII 63 meaning it is unlocked accuracy not guaranteed Broadcast ASCII plus Quality Configures to broadcast the time of day as ASCII data appended with a time quality indicator Response soh ddd hh mm ssQC Where the start bit of the soh is transmitted on time Q may be represented by 1 space locked maximum accuracy 2 ASCII 46 Error 1 microsecond 3 ASCII 42 10 microseconds 4 ASCII 35 E...

Страница 94: ...ime and date including the UTC day month year and local time zone Response GPZDA hhmmss ss dd mm yyyy xx xx iDC Where ZDA time and date hhmmss ss UTC time dd day 1 31 mm month 1 12 yyyy year xx xx local zone description 00 to 13 hours and minutes iD checksum Broadcast ABB_SPA_MSG Configures to broadcast the ABB SPA format a time string sequence of 32 ASCII characters starting with the characters 9...

Страница 95: ... Using custom string characters this would be TOA H0D 8 2 4 Com Port Settings Configure COM2 Port Settings Command 2 b w s p cYB Sets the COM2 port settings as follows Setting Values b baud rate 0 1200 1 2400 2 4800 3 9600 4 19200 5 38400 6 57 600 7 115 200 w word length 0 7 bits 1 8 bits s stop bits 0 1 bit 1 2 bits p parity 0 off 1 even 2 odd c COM port 1 COM22 Return COM Port Settings Command 2...

Страница 96: ...rts the configured broadcast string on COM2 Set n equal to the desired broadcast interval in seconds and o according to the desired time zone UTC or Local where o 0 for UTC and o 1 for Local NOTE to use the BR command you must first install it with the 1095 Utility or load the specific string using the A or B command Response soh ddd hh mm ssC example is Standard ASCII 8 3 3 Broadcast Mode Event C...

Страница 97: ...Where nnn Event buffer read index number U UTC time L Local time 83 ...

Страница 98: ...4 2 Set Event Channel Time Command nTA nTA sets the time source 1095A C to either Local or UTC where n 0 sets the event time to UTC and n 1 sets the event time to Local TA returns the current setting Response C 8 4 3 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 mode Set n 0 unless 123 see below EV returns a single even...

Страница 99: ...m is Channel write index 001 to 300 NOTE When nnn mmm and when using the EA command to read event data the event buffer is empty i e all event data which has been recorded has also been read 8 5 2 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 specifi...

Страница 100: ...less than 3 satellites are visible OR if Position Hold is active E 0 currently unused 8 5 5 Time Quality Command TQ TQ returns a single ASCII character 0 4 9 A B F indicating estimated worst case time quality which follows the IEEE Standard P1344 Value Condition Accuracy Value Condition Accuracy 0 Locked max accuracy 8 Unlocked 10 ms 4 Unlocked 1 µs 9 Unlocked 100 ms 5 Unlocked 10 µs A Unlocked 1 ...

Страница 101: ...adjust feature does not add the specified offset to local time display and output With m 1 ON the DST feature is always on With m 2 the DST feature will automatically change at the specified dates and times To complete the DST setup also use the Set DST Auto Start and Stop commands described below 8 6 3 Set DST Auto Start Time Command 2 w x y zDT 2 w x y zDT sets the date and time when DST starts ...

Страница 102: ... m equals the number of minutes positive East or negative West LT returns current setting Response C 8 6 6 Set Display Time Mode Command mTD mTD sets the display mode to either UTC m 0 or Local m 1 on Model 1095C clocks only TD returns current setting Response C 8 7 IRIG Data IEEE P1344 Command m n oIR m n oIR configures the control bits of the IRIG B IEEE P1344 standard oIR returns setting e g 0I...

Страница 103: ...ss seconds 8 8 3 Return Longitude Command LO LO returns the current antenna longitude Response Wddd mm ss sssC Format W West E for East ddd degrees mm minutes ss sss seconds 8 8 4 Set Receiver Position Command d m s D M S hSP d m s D M S hSP sets the receiver position based on the following values negative values are South latitude and West longitude positive values are North latitude and East lon...

Страница 104: ...ed position and almanac data to determine which satellites and Doppler shifts to use in acquisition Format yyyy year MM month dd day hh hour mm minute Response C 8 9 2 Return Local Date UTC Date Command DL DU DL returns the current Local date DU returns the current UTC date Response ddmmmyyyyC 8 9 3 Return Local Time UTC Time Command TL TU TL returns the current Local time TU returns the current U...

Страница 105: ...ro grammable Pulse B can accept four modes 0 1 2 and 3 nPM returns current setting Values for m and n are m 0 Pulse OFF 1 Pulse Mode 2 Frequency Mode 3 Aux IRIG Mode n 0 Timing Output A 1 Timing Output B Response C 8 10 3 Set Alarm Time Mark Command d h m s hs oAL AL sets the date and time at which the Model 1095A C issues the programmable pulse d h m s and hs set the output pulse to be generated ...

Страница 106: ...s in 10 millisecond increments up to 60 000 seconds n 0 selects Prog Pulse A and n 1 selects Prog Pulse B For example to set Prog Pulse A seconds per pulse mode for a pulse every 10 minutes or 600 seconds use the following command 60000 0PD nPD returns current setting Response C 8 10 6 Set Pulse Polarity Command m nPP m nPP sets the programmable pulse transition polarity i e TTL CMOS high or low m...

Страница 107: ... ns delay is 24AD See Section 7 1 3 for information on calculating cable delay AD returns current setting Response C 8 11 2 Set Out of Lock Time Command nLK nLK configures the Out Of Lock function in the Model 1095A C A negative number turns the out of lock function OFF n 0 sets the out of lock time to zero delay n 1 to 99 sets the amount of delay time in minutes following loss of satellite synchr...

Страница 108: ...ed time 5 Event in RM returns the current setting Response C 8 11 6 Set RS 485 Data Output Mode Command mDO mDO sets RS 485 data output mode where m 0 7 0 TxD A 1 TxD B 2 IRIG B 3 Programmable Pulse A 4 Programmable Pulse B 5 1 PPS 6 Unlocked 7 Event In DO returns current setting Response C 8 11 7 Set Display Mode Command m nLE Sets the display mode on the Model 1095C only mLE m 0 5 sets the mode ...

Страница 109: ...ted and Conducted Emissions Standard EN50082 1 Generic Immunity Part 1 Referenced Residential Commercial and Light Industrial Environments EN61010 1 Safety requirements of Electrical Equipment for Measurement Control and Laboratory Use Signed Signatory Bruce H Roeder This certificate declares that the described equipment conforms to the applicable requirements of the directives on Electromagnetic ...

Страница 110: ...nd Conducted Emissions Standard EN50082 1 Generic Immunity Part 1 Referenced Residential Commercial and Light Industrial Environments EN61010 1 Safety requirements of Electrical Equipment for Measurement Control and Laboratory Use Signed Signatory Bruce H Roeder This certificate declares that the described equipment conforms to the applicable requirements of the directives on Electromagnetic Compa...

Страница 111: ...le 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 for material and pr...

Страница 112: ...nt dimensions 63 power supplied to 66 user supplied cables 66 antenna cable 63 effects of cable parameters 63 antenna cable testing 67 Appendix A 95 B 97 cable accessory 65 adjacent signal interference 66 attenuation 64 Belden 12 DC resistance 64 delay 64 delays 50 distance 47 main functions 12 physical protection 65 timing output 47 user supplied antenna 66 wire losses 49 wiring 1095A C 12 CE Mar...

Страница 113: ...king 17 HyperTerminal 39 IRIG B IEEE 1344 description 46 modulated voltage matching 50 time code types 44 timecode description 44 unmodulated 45 waveform comparison 45 port I O definitions 13 locations 13 programmable pulse description 46 pulse width 46 programming cable kit 2 relay configuration 30 contacts 14 output mode 94 set out of lock 93 specifications 58 terminals 43 RS 232C Communication ...

Страница 114: ...e 90 serial connection kit 8 serial port output symbols 71 signal output description 44 software 1095 Utility Application 26 opening configuration file 38 saving configuration file 38 specifications 55 certifications 62 communications 58 environmental 62 general 62 GPS receiver 55 inputs outputs 56 interface 58 physical 62 power requirements 62 relay 58 startup 1095A 23 1095A fault display 25 1095...

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