Model 1201B/C GNSS Synchronized Clock (100ns)

Model 1201B/C GNSS Synchronized Clock (100ns)

Next generation multi-satellite timing source for precision applications. Featuring enhanced performance and security (EPS).

 

Model 1200B 1201B/C User Manual
Download PDF(6 MB) »

Model 1201B/C Quick Setup Guide
Download PDF(141 kB) »

Model 1201B/C Data Sheet
Download PDF(670 kB) »

Model 1201B/C Data Sheet Español
Download PDF(1 MB) »

GNSS Antenna Data Sheet
Download PDF(4 MB) »

Model 1201B/C delivers better than 100 ns accuracy and includes the most highly sought after features in a precision time clock as standard plus many enhancements.

Three terminal strip outputs are jumper selectable to unmodulated IRIG-B, modulated IRIG-B, 1 PPS, programmable pulse, or event input. The Model 1201B/C is capable of driving multiple loads in parallel.

Like other Arbiter clock models, various options are available to add features such as NTP/PTP (Network Time Protocol/Precision Time Protocol [IEEE 1588]) support, four additional configurable outputs, high drive IRIG-B outputs, Power System Time, Frequency, and Phase Monitor functions, one Form C (SPDT) fail-safe, LOCKED relay that is compatible with 129 Vdc digital fault recorder inputs; plus many more.

Model 1201B/C is available with two front panel configurations (see photos and Key Features tab). Each product includes the GNSS antenna and cable, a terminal power strip, and a rack mount kit, all backed by a Ten Year Limited Warranty to the original owner/purchaser.

Accéder au résumé en français  

  • Accuracy of ± 100 ns
  • Standard: Unmodulated IRIG-B, modulated IRIG-B, 1 PPS, and One Form C (SPDT) fail-safe locked relay
  • Options include an internal NTP/PTP server, High Drive IRIG-B outputs, and Power System Time, Frequency and Phase Monitor
  • 1201C includes both the operating status LEDs, the LCD display and keypad, and includes a large LED time display.
  • IEEE C37.118.1-2011 compliant for Synchrophasor use.

Enhancements

  • Enhanced Performance and Security (EPS)
    • EPS benefits include multi-system timing sources (GPS/ GLONASS/Galileo/BeiDou), standard holdover oscillator, multiple levels of security, secure communications, and anti-spoofing technology
  • Redundant power supply available
  • Second serial port standard
  • IRIG-B compliant with IEEE Std. C37.118.1-2011

Build-a-Part Ordering Structure:
* denotes standard selection

  1201  -  x  -  Axx  -  Bxx  -  Cxx  -  Dxx  -  Exx  -  Fxx
       
 
 		        
 		    
 
 
 
 		    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 		    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 		    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Series                
             
 Model             
 B = LCD Display          
 C = LCD Display & Large Segment LED Time Display          
           
 Power Supply A           
 A01* = 100 Vac to 240 Vac, 100 Vdc to 350 Vdc        
 A02 = 24 Vdc to 48 Vdc        
         
 Power Supply B         
 B00* = Not Installed      
 B01 = 100 Vac to 240 Vac, 100 Vdc to 350 Vdc      
 B02 = 24 Vdc to 48 Vdc      
       
 Holdover Oscillator       
 C01* = 1 ms/24 h    
     
 Fiber Optic Output     
 D00* = Not Installed  
 D01 = PP/IRIG-B Output, 820 nm Type ST multimode  
   
 I/O  
 E00* = Not Installed
 E01 = Four configurable Outputs
 E02 = Four configurable Fiber-Optic Outputs
 E03 = 8-Channel High Drive IRIG-B Outputs
 E04 = Power System Time, Frequency, and Phase Monitor
 E05 = Four Additional Outputs with Dry Contact and + 25/50 Vdc
 E06 = Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Copper  
 E07 = Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Fiber
 E08 = Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Fiber/Fiber
 E09 = Four BNC Connectors, (Parallel to Pluggable Terminal Strip)
 
 Relay
 F01* = Standard Voltage (30 Vdc/250 Vac)
 F02 = High DC-Voltage (300 Vdc/250 Vac)

Receiver Characteristics

Timing Accuracy

Accuracy Note

Specifications apply at the 1 PPS/IRIG_B unmodulated/PP outputs when receiving four or more satellites, as of date of publication.
Accuracy UTC/USNO

± 100 ns peak

Position Accuracy

2 meters, rms

Satellite Tracking

Seventy-two (72) channel receiver: GPS L1C/A, GLONASS L1OF, Galileo E1B/C, and BeiDou B1I

Acquisition

  • 55 seconds typical, cold start
  • 25 seconds, typical, warm start
  • 3 seconds, typical, hot start

Oscillator

Type

 OCXO
Stability

1 ms/24 h

I/O Configuration

Output Connectors

Three standard pluggable terminal strip connectors with jumper-selectable signals:
Port 1: IRIG-B unmodulated, 1 PPS, Programmable Pulse or Event Input
Port 2: IRIG-B modulated, 1 PPS, IRIG-B unmodulated, Programmable Pulse or Event Input
Port 3: IRIG-B unmodulated, 1 PPS, Programmable Pulse or Event Input

Output characteristics:

  • 5 V CMOS bus drivers with 10 ohms source impedance and ± 75 mA drive capability.
  • 4 Vpp, 20 ohms source impedance (IRIG- B modulated only)
  • 400 V, 220 mA, 1 W power dissipation open-drain FET drivers

Output Signals

One IRIG-B channel that controls both the unmodulated and modulated outputs. Configurable to Local or UTC time with C37.118.1 on or off, settings independent from Programmable Pulse IRIG-B output.

Programmable Pulse Output

One programmable pulse output (by a jumper connection) that may be output on a terminal strip connector or the AUX OUT pin on either COM port.
Available signals:

  • IRIG-B unmodulated (UTC/Local, C37.118.1 On/Off. Settings are independent from main IRIG-B signal.)
  • Every 1 second to 60,000 seconds, starts top of the second
  • Hourly at a specified offset
  • Daily at a specified time of day
  • One shot at a specified time of year
  • Slow Code (UTC/LCL)
  • DCF-77

Pulse duration is programmable from 0.01 seconds to 600 seconds, except in one-shot mode, where the output is Low prior to the specified time and High thereafter.

Relay Contacts

One Form C (SPDT) fail-safe, 8 A at 250 Vac; configurable to Out-of-Lock, Fault, Alarm, Stabilized, or Programmable Pulse

Event Inputs

One event timer channel with 100 ns resolution is standard. This function may be driven by the start bit of a received character on the serial port, or an external 5 V CMOS/TTL signal at one of the terminal strip connectors (jumper-selectable).

Interface

Operator

Display
  • 2 character x 20 character supertwist LCD with white LED backlight
  • Status LEDs
  • 20 mm (0.8 in) LED; 6 digits (Model 1201C)
Functions
  • Time and date
  • Antenna status and position
  • Timing status
  • System status
Status LEDs
  • Normal (green)
  • Learn (orange)
  • Unlocked (red)
  • Alarm (red)
  • Operate (green)
  • Power A (green)
  • Power B (green)
  • Fault (red)
Keyboard

Eight keys; select display functions or setup menus
Setup
  • COM 1 (RS-232 port 1)
  • COM 2 (RS-232 port 2)
  • Local Time Offset
  • Out-of-Lock Time
  • Relay Configuration
  • Backlight control
  • Event/Deviation
  • Programmable Pulse
  • System Delays
  • IRIG Time Data
  • Option Configuration

System

RS-232

1200 baud to 230,400 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity

COM1:
RS-232 (TXD, RXD, AUX IN, AUX OUT)
RS-422/485 (TXD+, TXD-)

COM2:
RS-232 (TXD, RXD, AUX OUT)

AUX OUT can provide programmable pulse function at RS-232 levels
Broadcast modes
  • Standard ASCII (IRIG-J)
  • Extended ASCII
  • ASCII with Time Quality
  • ASCII with Time Quality and Year
  • Vorne large-display
  • Status/Alarm
  • Event data
  • User configurable serial time code
Connector

Male 9-pin D-subminiature

Power Requirements

Accommodates any combination of the two available power supplies in a single or redundant configuration. Choices include an universal supply or a low dc supply, both with surge withstand capability.

Standard

Voltage

Universal
100 Vac to 240 Vac, 47 Hz to 440 Hz, 20 VA maximum or 100 Vdc to 350 Vdc, 30 W maximum.

Low DC
24 Vdc to 48 Vdc; 30 W maximum.
Inlet

Secure Pluggable Terminal Strip

General

Physical

Size

425 mm x 280 mm x 44 mm (16.75 in x 11 in x 1.75 in)
19 in, 1 Rack Unit; 280 mm deep FMS.
Rack mounts included
635 mm x 381 mm x 229 mm (25 in x 15 in x 9 in), shipping
Weight

2 kg (4.5 lbs), net
5.5 kg (12 lbs), shipping
Ground Block

Antenna protective ground. Copper, with M5 (10-32) stud and nut. Connects internally to gas discharge tube (GDT) lightning surge suppressor.
Antenna

Cable Connection: F-type
Size: 80 mm dia. x 84 mm (3.2 in x 3.3 in)
Weight: 170 g (6 oz)
Temperature: - 55 °C to + 65 °C
Antenna Cable

Type: RG-6, 15 m (50 ft) provided
Weight: 0.69 kg (1.52 lbs) per 15 m
Antenna Mounting

0.75 in pipe (1 in - 14 marine) thread

Environmental

Temperature

Operating: - 40 °C to + 65 °C
Nonoperating: - 40 °C to + 75 °C
Humidity

Noncondensing
EMC

Conducted emissions: power supply complies with FCC 20780, Class A and VDE 0871/6.78 Class A

Surge withstand capability (SWC), power inlet: designed to meet ANSI/IEEE C37.90-1 and IEC 61000-4

Certificates and Approvals

CE mark/label and certificate

One option can be selected from each of the letter categories (A, B, C, D, E, F) listed below; except Power Supply which accommodates two.

A power supply and holdover oscillator must be specified.

I/O
1201optD01 Single Configurable Fiber-Optic Output
1201optE01 Four Configurable Outputs
1201optE02 Four Configurable Fiber-Optic Outputs
1201optE03 8-Channel High Drive IRIG-B Output
1201optE04 Power System Time, Frequency, and Phase Monitor
1201optE05 Four Additional Outputs with Dry Contact and + 25/50 Vdc
1201optE06 Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Copper
1201optE07 Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Fiber
1201optE08 Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Fiber/Fiber
1201optE09 Four BNC Connectors, (Parallel to Pluggable Terminal Strip)
1201optF01 Standard Voltage Relay (30 Vdc/250 Vac)
1201optF02 High DC-Voltage Relay (300 Vdc/250 Vac)
Power
1201optA01 100 Vac to 240 Vac, 100 Vdc to 350 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1201optA02 24 Vdc/48 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1201optB01 100 Vac to 240 Vac, 100 Vdc to 350 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1201optB02 24 Vdc/48 Vdc Secure Pluggable Terminal Strip and Surge Withstand
Oscillator
1201optC01 Holdover OCXO 1 ms/24 h
Included
AS0094800 Rack Mount Kit (12xx series 1 RU) (preinstalled)
AS0099200 Arbiter Universal GNSS Antenna
AS0105000 Cover Screw Kit 1200/1201/1205/1206
CA0021315 1 15 m (50 ft) RG-6 Antenna Cable, RoHS
PD0051900 Quick Setup Guide (1201)
Available
AP0003400 2 BNC (Male) Breakout to 100 mm Wires
AP0008900 3 BNC (Female) Breakout to 100 mm Wires
AP0013400 GNSS Antenna Cable Splitter, F-Type, 950-2150 MHz, One Port Pass DC
AP0014900 4 BNC (Female) Breakout to Screw Terminal
AP0015000 5 BNC (Male) Breakout to Screw Terminal
AS0044600 Antenna Mounting Kit
AS0044700 6 21 dB In-Line Pre-amplifier
AS0048900 Antenna Grounding Block Kit, RoHS
AS0094500 GNSS Surge Arrester
AS0096700 Operation Manual (1200/1201)
CA0019806 RS-232 Null Modem Cable, DB9F-DB9F, 2 m (6 ft) length
CA0021302 1 2 m (6 ft) RG-6 Antenna Cable, RoHS
CA0021306 1 6 m (20 ft) RG-6 Antenna Cable, RoHS
CA0021330 1 30 m (100 ft) RG-6 Antenna Cable, RoHS
CA0021338 1 38 m (125 ft) RG-6 Antenna Cable, RoHS
CA0021345 1 45 m (150 ft) RG-6 Antenna Cable, RoHS
CA0021350 1 50 m (164 ft) RG-6 Antenna Cable, RoHS
CA0021360 1 60 m (200 ft) RG-6 Antenna Cable, RoHS
CA0021375 1 75 m (250 ft) RG-6 Antenna Cable, RoHS
CA0022500 Option 28 System Frequency Reference Cable, 6 m (20 ft)
CA0034201 Power Cord, 250V, Cont. Europe, w/Conn.
CA0034202 Power Cord, 240V, Australia; NZ; PRC, w/Conn.
CA0034203 Power Cord, 250V, U.K., w/Conn.
CA0034209 Power Cord, 120V, N. Amer, w/Conn.
CA0035000 Power Cable Term Block to IEC320 C14
CN0019202 Mating Connectors, 2-pole, 5 mm
CN0019203 Mating Connectors, 3-pole, 5 mm
CN0050700 Type F, Male, RG-6 Antenna Cable Compression Connector, RoHS
CN0050800 7 Type F, Male, RG-6 Plenum Rated Antenna Cable Compression Connector, RoHS
CN0051300 Type F, Male, RG-11 Antenna Cable Compression Connector, RoHS
TF0013200 Antenna Cable Stripping Tool, RG-6
TF0013300 Antenna Cable Stripping Tool, RG-11
TF0024000 Type F, RG-6 Antenna Cable Compression Tool
TF0024100 Type F, RG-11 Antenna Cable Compression Tool
WC0004900 1 300 m (1000 ft) Roll RG-11 Cable, RoHS
WC0005000 1 300 m (1000 ft) Roll RG-6 Cable, RoHS
WC0005200 8 300 m (1000 ft) Roll RG-6 Plenum Rated Cable, RoHS

1 Stocked length. Custom lengths available from 0.3 m (1 ft) to 300 m (1000 ft). Contact factory.
2 Converts female BNC-terminated coaxial cable to pair of wires.
3 Converts male BNC-terminated coaxial cable to pair of wires.
4 Converts pair of wires to female BNC.
5 Converts pair of wires to male BNC.
6 Used for cable lengths greater than: RG-6 100 m (328 ft) ; RG-11 195 m (640 ft)
7 Indoor use only. Not weather resistant. Not UV radiation protected.
8 Stocked length. Custom lengths available from 0.3 m (1 ft) to 300 m (1000 ft). Contact factory. Indoor use only. Not weather resistant. Not UV radiation protected.

Click to Download Latest Version of Software
1201_Utility_06May2021_0113 View and modify configuration settings. Default firmware upload password = admin
1201_Utility_SHA256_06May2021_0113 1201_Utility SHA256 checksum
Tera Term_01Jan2010_23 This is a very good HyperTerminal replacement. Able to capture data from Models 930A and 931A. Also able to program the GPS Satellite Controlled Clocks via serial commands.
Tera Term SHA256_01Jan2010_23 Tera Term SHA256 checksum
 

Software Version and Related Information

1201_Utility

The software interface specifically written for the Model 1201B/C.

  • Allows configuration of Model 1201B/C
  • Supports viewing and modification of existing configuration on Model 1201B/C from your PC.
  • Saves the existing configuration file from the Model 1201B/C to your PC.
  • Compatible with Windows 7, 8, and 10
VersionRev LevelVersion Notes
06May2021 01.13
  1. Fixed: Flash Failure Fault reported as a GNSS Fault in the Utility (BZ1018)

Posted to web site: 02 June 2021

26Nov2019 01.12
  1. Enhanced firmware upload fault checks
  2. Enhanced so more specific fault messages are reported on the Faults Tab (BZ931)

Posted to web site: 26 November 2019

29Apr2019 01.10
  1. Improved version checks when uploading firmware.

Posted to web site: 03 May 2019

15Jan2019 01.09
  1. Fixed Verify Configuration. Did not verify all settings.
  2. Fixed issue where Galileo configuration did not save through a power cycle.
  3. Added support for Model 1200B
  4. Added support for BeiDou GNSS constellation.
  5. Added GNSS signal to noise ratio on Status Tab in Utility.
  6. Added -- for disabled constellations and signal to noise ratio on Status Tab in Utility.
  7. Changed 1 PPS output to 10 mS pulse width for consistency with other Arbiter clocks.
  8. Changed "Relay" to "Status Relay" on Status Tab in Utility.
  9. Changed "Acquiring Satellites" to "Acquiring Time" on Status Tab in Utility.
  10. Menu and Display updates for consistency with other Arbiter clocks.
  11. Other code cleanup for performance and consistency.

Posted to web site: 15 January 2019

21Aug2018 01.08
  1. Fixed support for Option 28 Com Port Broadcast Mode
  2. Fixed message for successful firmware upload where it incorrectly reported "and Verified"
  3. Replaced "Acquiring" with "Acquiring Satellites"
  4. Reworked spin button control for Local Time Offset to prevent periodic pauses when Up/Down buttons are pressed and held
12Oct2017 01.07
  1. Fixed bug - Save Configuration File no longer writes values for second receiver and second antenna (1201B/C does not have a second antenna or second receiver).
  2. Added functionality for Spoof configuration. Including functionality for "Re-lock" button/menu item to clear the Spoof alarm.
27Apr2017 01.05
  1. Updated Copyright to 2017
  2. Updated Faults Tab to match the updated firmware
  3. Other minor enhancements to more closely match 1201B/C functionality.
26Feb2016 01.03
  1. The Model 1201B/C firmware must be version 1.03 to read and write configurations. Use this utility to update the firmware.
  2. Improved compatibility with multiple receivers.
  3. Update copyright to 2016.
26Oct2015 01.02
  1. Improved compatibility with the latest firmware release.
18May2015 01.00
  1. Initial release.

1201_Utility_SHA256

VersionRev LevelVersion Notes
06May2021 01.13
26Nov2019 01.12

Terminal Emulation Program (Tera Term)

Free software terminal emulator (communications program) for Microsoft Windows.

  • Tera Term (Pro) is a free software terminal emulator (communication program) for MS-Windows.
  • Supports VT100 emulation, telnet connection, serial port connection, etc.
  • Compatible with Windows 98, Windows NT, Windows 2000, Windows XP, Vista, Windows 7

Tera Term SHA256

Firmware Information (EPROM based firmware is not available for download)
1200-1201_Firmware_01.23_16Jan2023 Downloadable. Requires Utility (See Software tab).
1200-1201_Firmware_SHA256_01.23_16Jan2023 1200-1201_Firmware SHA256 checksum
Arbiter All MIB file_03DEC2012_00003 For use with SNMP clients.
Arbiter All MIB File_SHA256_03Dec2012_00003 Arbiter All MIB File SHA256 checksum
NTP/PTP Firmware_2.08_update-00.11 Downloadable. UNZIP, read instructions, and use the web/SSH interface to import apf file(s) into unit.
NTP/PTP Firmware_SHA256_2.08_update-00.11 NTP/PTP Firmware SHA256 checksum
Power System Time, Frequency, and Phase Monitor Firmware_05Apr2012 Requires an EPROM update from Arbiter.
 

Firmware Version and Related Information

Downloadable Firmware (1200-1201_Firmware)

VersionRev LevelVersion Notes
01.23 16Jan2023

Updates are not security related.

  1. Antenna Status display would incorrectly alternate between "low voltage" and "open" when the antenna was disconnected. It should only display "open" when there is no antenna connected.

Posted to web site: 16 January 2023
01.22 25May2021

Updates are not security related.

  1. Removed extra <CR><LF> in EA serial event retrieval (nnA command). (BZ1019)
  2. Fix 1200DX serial command to work as intended and avoid having to do a power cycle. (BZ1022)
  3. Fix issue with UART code buffer size.
  4. Updated two letter commands to match other clocks.
  5. Fix serial commands with a model number security key to work properly between the 1200 and 1201. (BZ1017)
  6. Added additional checking to two letter commands.
  7. Fixed DST current setting output (0dt command).

Posted to web site: 2 June 2021
01.21 09Feb2021

Updates are not security related.

  1. Improved compatibility between firmware and utility when using special serial broadcasts (BZ1010).

Posted to web site: 9 Feb 2021
01.20 04May2020

Updates are not security related.

  1. Added event timing compensation.
  2. Fixed relay "stabilized" operation. When selected, the status was always reported as "stabilized".
  3. Added 'L' (local) or 'U' (UTC) to end of 0OU output string.

Posted to web site: 26 May 2020
01.19 02Mar2020

Updates are not security related.

  1. Fixed serial commands DL, DU, TL, and TU to remove an additional <CR><LF> first seen in version 01.18 (BZ981).
    1. DL = return local date.
    2. DU = return UTC date.
    3. TL = return local time.
    4. TU = return UTC time.
  2. Update copyright year.

Posted to web site: 3 March 2020
01.18 10Oct2019

Updates are not security related.

  1. Custom broadcast did not allow for UTC or LCL time selection
  2. Cleaned Power Sytem Time, Frequency, and Phase Monitor Option information on front panel
  3. Fixed two-letter serial commands to match previous versions
  4. Added ability to start Learn Mode from the front panel
  5. Fixed IRIG-B issue during a leap second event when Daylight Saving Time (DST) is active. The IRIG-B data was incorrect for the leap second and correct thereafter.
  6. Improved drift performance when unlocked.
  7. Adjust PPS outputs to improve delays.

Posted to web site: 9 November 2019
01.16 14Jan2019

Updates are not security related.

  1. Added support for Model 1200B
  2. Added support for BeiDou GNSS constellation.
  3. Change 1 PPS output to 10 mS pulse width for consistency with other Arbiter clocks.
  4. Fixed issue where Galileo configuration did not save through a power cycle.
  5. Menu and Display updates for consistency with other Arbiter clocks.
  6. Added ability to get signal strength in Utility.
  7. Other code cleanup for performance and consistency.

Posted to web site: 15 January 2019
01.15 21Aug2018

Updates are not security related.

  1. Improved query of GNSS confguration with the 1201Utility.
  2. Improved epoch spoofing support.
  3. Improved holdover oscillator performance.
  4. Added front panel GNSS confguration.
  5. Clean up menu structure with Option 28 Power System, Time Frequency, and Phase Monitor.
  6. Changed Learn mode from count up to count down.
  7. Changed status display to "Acquiring Satellites" instead of "Unlocked" when clock has never been locked.
  8. Fixed DCF77
  9. Other code cleanup for performance and consistency.

Posted to web site: 2 October 2018
01.12 19Sep2017

Updates are not security related.

  1. Unlock time broadcast value set to maximum 99 minutes, matching the front panel.
  2. Improve reliability of firmware update process.
  3. Update the 1201 Utility to version 1.05 for correct operation.
01.09 28Nov2016

Updates are not security related.

  1. Fixed NMEA GLL broadcast to work properly when Longitude is greater than 127 degrees.
01.08 08Nov2016

Updates are not security related.

  1. Fixed NMEA GLL broadcast longitude (BZ 739).
  2. Fixed power LED's to properly indicate which power supply is in use.
  3. Increased maximum saved events to 50.
  4. Fixed leap seconds in event data. The offset was applied twice to the recorded event time.
  5. EA command now sends "NO DATA" when event buffer is empty to match other clock's response.
01.07 31Aug2016

Updates are not security related.

  1. Fix leap second operation.
  2. Update IRIG output to only set direction bit when LS is pending.
  3. Improved the antispoofing platform.
  4. Improved GNSS operation.
  5. Fix event data formatting.
  6. Fix event seconds value issue that would sometimes occurs around the top of second (seconds value would be from next second).
01.05 17May2016

Updates are not security related.

  1. Fixed PPS reference error that was introduced in version 01.04.
  2. Performance enhancements to speed satellite synchronization.
  3. Hold-over oscillator health test improvements.
  4. Reworked trajectory code to improve recovery after an out-of-lock condition.
01.03 08Mar2016
  1. Fixed DCF77 output. Removed the 59th pulse at the top of the hour.
  2. Fixed IRIG-B output. Leap second pending bit was always on. Year changeover temporarily changed the IRIG-B time zone
  3. Internal message handler improvements.
  4. Power-up broadcast selection improvements.
  5. Code changes for improved compiler compatibility.
  6. Anti-spoofing foundation added.
01.01 08Oct2015
  1. First release for u-blox receiver. No longer supporting the NV08 receiver.
  2. Corrected leap second implementation.
  3. Leap second default changed to 17 seconds.
  4. Added ability to clear faults from the front panel.
00.12 07Jul2015
  1. Corrected leap second implementaion.
  2. Update NTP/PTP IP display to remove leading "0"s.
    Before: 192.168.000.001
    Now: 192.168.0.1
00.11 01Jun2015
  1. Fixed intermittent dashes on display for holdover uncertainty.
  2. Continuous Time Quality (C37.118) corrected for response to out-of-lock and fault conditions.
  3. 1201C LED date display changed to dot separator in place of slashes.
  4. Humidity sensor compensation activated to improve holdover performance.
  5. Position alarm algorithm is now qualified with locked and tracking satellites.
00.10 19May2015
  1. Initial release.

1200-1201_Firmware_SHA256

VersionRev LevelVersion Notes
01.23 16Jan2023
01.22 25May2021
01.21 09Feb2021
01.20 04May2020
01.19 02Mar2020

Downloadable MIB File (Arbiter All MIB file)

VersionRev LevelVersion Notes
03DEC2012 0.0003

Downloadable All MIB File checksum (Arbiter All MIB File_SHA256)

VersionRev LevelVersion Notes
03Dec2012 0.0003

Downloadable Firmware (NTP/PTP Firmware)

The zip file contains all files and PDF instructions necessary to update the Network Time Protocol (NTP) / Precision Time Protocol (PTP) firmware. Reminder: Unzip the downloaded file to access the PDF instructions and individual update files.

VersionRev LevelVersion Notes
2.08_update-00.11

Updates are not security related.

Released 23May2018

1. Enhancement to allow proper recognition of the Model 1202B/C in Support > Version. Support > Update Log

Support  > Version
Core: 2.4
Auth01: 2.2
TPS UI Content: 2.5
Startup App: 1.3
System Monitor: 1.5
CLOI: 1.11

Support > Update Log should have the following entries:

opt34_tps_02.08_update 00.11     Compiled Tue May 22 17:18:40 PDT 2018
opt34_tps_ui-02.05                        Compiled Wed Jan 11 07:38:09 PST 2017

Reminder: Unzip the downloaded file to access the PDF instructions and individual apf update files.
2.08_update-00.10

Updates are not security related.

Released 01Nov2017

1. Enhancement to allow an additional port in the future. Version tab does not change. 

Support  > Version
Core: 2.4
Auth01: 2.2
TPS UI Content: 2.2
Startup App: 1.3
System Monitor: 1.5
CLOI: 1.11

Support > Update Log should have the following entry:

sparky-01.07       Compiled Wed Oct 25 06:52:40 PDT 2017

Reminder: Unzip the downloaded file to access the PDF instructions and individual apf update files.
2.08_update-00.09

Updates are not security related.

Released 23May2017

1. Updates CLOI to 1.11. The new CLOI reduces the load on the option board CPU which allows it to serve more PTP clients.

Support  > Version
Core: 2.4
Auth01: 2.2
TPS UI Content: 2.2
Startup App: 1.3
System Monitor: 1.5
CLOI: 1.11

Reminder: Unzip the downloaded file to access the PDF instructions and individual apf update files.
2.08_update-00.08

Updates are not security related.

Released: 11Jan2017

1. Updates sys_monitor-01.05. The new sys_monitor corrects a bug in the frequency tuning algorithm that results in high system time offsets on some units. Whether or not a system is susceptible to this bug depends on the initial frequency of the on-board oscillator prior to tuning. It is likely that a system showing low offset now will continue to work. However, to be safe, the update is recommended.

Support  > Version
Core: 2.4
Auth01: 2.2
TPS UI Content: 2.2
Startup App: 1.3
System Monitor: 1.5
CLOI: 1.10

Reminder: Unzip the downloaded file to access the PDF instructions and individual apf update files.
2.08_update-00.07

SECURITY UPDATE

Released: 17Aug2016

  1. Update NTP to latest release (4.2.8p8) to protect against a known vulnerability.
  2. Modified the NTP server configuration to allow correct responses to queries at a rate higher than once every 4 seconds.
  3. Fixed a bug that prevents the proper network filter configuration for vlan interfaces resulting in vlans not functioning.
  4. Fixed a bug preventing getting the OS version from the serial port
  5. Improved robustness of the update process.

NTP/PTP Firmware_SHA256

VersionRev LevelVersion Notes
2.08_update-00.11

EPROM Update (Power System Time, Frequency, and Phase Monitor Firmware)

VersionRev LevelVersion Notes
05Apr2012
  1. The frequency was unstable off nominal frequency with an error proportional to frequency deviation. Fixed a conversion factor in the calculation. (BZ 692)
13Jul2006
  1. Improved compatibility during transfer of correction values to option 28.

GPS Substation Clock Requirements
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IRIG-B Time Code Accuracy, IED and System Design Issues
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NERC PRC-002 and PRC-018 Compliance Statement
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Time in the Power Industry: How and Why We Use It
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Why GPS Clocks Are Not Free
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Specifying Holdover Performance
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App Note 101: Distributing Timing Signals in a High-EMI Environment
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App Note 103: Large Format Displays with Arbiter products
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Continual Self Calibration with Power System Time, Frequency and Phase Monitor Option
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GPS Antenna Mounting Bracket
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GPS Antenna Mounting Bracket Instructions
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GNSS Antenna Preamplifier Installation Instructions
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IRIG Standard 200-16
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IRIG-B Specifications
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Option 34: Network Time Protocol (NTP)/Precision Time Protocol (PTP) Server Data Sheet
Download Option34_NTP_PTP.pdf (22 kB) »

Power System Time, Frequency and Phase Monitor
Download power_system_time_freq_phase_monitor.pdf (152 kB) »

Chassis Dimensions
Download chassis.pdf (4 MB) »

Timing Products Options and Accessories
Download timing_and_frequency_options.pdf (36 kB) »

Option 28 Firmware Upgrade Instructions
Download Option28_DST_ROM_instructions.pdf (154 B) »

GNSS Surge Protector Installation Instructions
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Reducing Overshoot and Ripple in Arbiter Products with High Drive Outputs
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Timing Signals, IRIG-B and Pulses
Download pd0043200_timing_signals_overview.pdf (197 kB) »

Catalogo de Productos de Sincronizacion y Frecuencia
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Model 1201B/C CE Declaration
Download 1201BC_CE_declaration.pdf (102 kB) »

Antenna Cable Assemblies RoHS2 Declaration of Conformity
Download Antenna_Cable_Assemblies_RoHS2_DoC.pdf (286 kB) »

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