Model 1205B/C GNSS Synchronized Clock (40ns)

Model 1205B/C GNSS Synchronized Clock (40ns)

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

 

Model 1205B/C 1206B/C User Manual
Download PDF(4 MB) »

Model 1205B/C and Model 1206B/C Setup Guide
Download PDF(2 MB) »

Model 1205B/C Data Sheet
Download PDF(1 MB) »

Model 1205B/C Data Sheet Español
Download PDF(726 kB) »

GNSS Antenna Data Sheet
Download PDF(4 MB) »

Model 1205B/C delivers better than 40 ns typical accuracy and includes the most highly sought after features in a precision time clock as standard plus enhanced performance and security (EPS).

The standard holdover oscillator maintains accuracy of 1 ms/day when not tracking satellites. In addition to enhanced performance, Arbiter Systems' new EPS technology includes GNSS anti-spoofing and secure password-protected and encrypted configuration interface providing robust, reliable synchronization to help comply with latest NERC-CIP requirements.

The Model 1205B/C timing signals are available via the three Ethernet ports, the thirty-two pin terminal block and from the three available option slots. The three 10/100 Ethernet ports (copper standard, fiber optional) provide status, configuration as well as network timing supporting the NTP, SNTP, PTP (IEEE 1588Power Profile supported), SNMP, ICMP, TCP, SSH, SSL, HTTP, HTTPS and DHCP protocols. The thirty-two pin terminal block provides access to the Model 1205B/C standard inputs, outputs and legacy communication ports. Two inputs, an event timer and a frequency monitor, are included along with six Programmable Pulse outputs, a modulated IRIG-B output, a FET output, relay contacts, two RS-232 ports and a RS- 422/485 port (transmit only).

The Model 1205B/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 Five Year Limited Warranty to the original owner/purchaser.

  • Accuracy of ± 100 ns, ± 40 ns typical
  • Standard: NTP/PTP server, unmodulated IRIG-B, modulated IRIG-B, 1 PPS, and One Form C (SPDT) fail-safe locked relay, Power System Time and Frequency Monitor
  • Output options include: 50 Ohm programmable pulse, 75 Ohm programmable pulse, 50 Ohm frequency (AC or DC coupled), 75 Ohm frequency (AC or DC coupled), dual relays, and redundant GNSS receiver
  • 1205C 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
  • Redundant GNSS receiver available
  • Second serial port standard
  • IRIG-B compliant with IEEE Std. C37.118.1-2011

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

  1205  -  x  -  Axx  -  Bxx  -  Cxx  -  Dxx  -  Exx  -  Fxx  -  Gxx  -  Hxx  -  Jxx
                                           
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          
           
 Network Connectors          
 D01 = 3 - 10/100BT        
 D02 = 2 - 10/100BT, 1 - Multimode Fiber        
 D03 = 1 - 10/100BT, 2 - Multimode Fiber        
 D04 = 3 - Multimode Fiber        
         
 I/O Slot A        
 E00* = Not Installed      
 E01 = Programmable Pulse Outputs, 50 Ohm      
 E02 = Programmable Pulse Outputs, 75 Ohm      
 E03 = 1.544/2.048 MHz Outputs, 50 Ohm, DC Coupled      
 E04 = 1.544/2.048 MHz Outputs, 75 Ohm, DC Coupled      
 E05 = 1.544/2.048 MHz Outputs, 50 Ohm, AC Coupled      
 E06 = 1.544/2.048 MHz Outputs, 75 Ohm, AC Coupled      
 E07 = Modulated IRIG-B Outputs      
 E08 = Programmable Pulse Fiber-Optic Outputs      
 E09 = Programmable Pulse 24 Vdc Outputs      
 E10 = Dual Relay Outputs      
 E11 = System 1 PPS Outputs, 50 Ohm      
 E12 = System 1 PPS Outputs, 75 Ohm      
 E13 = Redundant GNSS Receiver      
 E14 = Frequency Outputs, 50 Ohm, DC Coupled      
 E15 = Frequency Outputs, 75 Ohm, DC Coupled      
 E16 = Frequency Outputs, 50 Ohm, AC Coupled      
 E17 = Frequency Outputs, 75 Ohm, AC Coupled      
 E18 = 1 MHz Sine Wave Outputs, 50 Ohm      
 E19 = 5 MHz Sine Wave Outputs, 50 Ohm      
 E20 = 10 MHz Sine Wave Outputs, 50 Ohm      
       
 I/O Slot B      
 F00* = Not Installed    
 F01 = Programmable Pulse Outputs, 50 Ohm    
 F02 = Programmable Pulse Outputs, 75 Ohm    
 F03 = 1.544/2.048 MHz Outputs, 50 Ohm, DC Coupled    
 F04 = 1.544/2.048 MHz Outputs, 75 Ohm, DC Coupled    
 F05 = 1.544/2.048 MHz Outputs, 50 Ohm, AC Coupled    
 F06 = 1.544/2.048 MHz Outputs, 75 Ohm, AC Coupled    
 F07 = Modulated IRIG-B Outputs    
 F08 = Programmable Pulse Fiber-Optic Outputs    
 F09 = Programmable Pulse 24 Vdc Outputs    
 F10 = Dual Relay Outputs    
 F11 = System 1 PPS Outputs, 50 Ohm    
 F12 = System 1 PPS Outputs, 75 Ohm    
 F14 = Frequency Outputs, 50 Ohm, DC Coupled    
 F15 = Frequency Outputs, 75 Ohm, DC Coupled    
 F16 = Frequency Outputs, 50 Ohm, AC Coupled    
 F17 = Frequency Outputs, 75 Ohm, AC Coupled    
 F18 = 1 MHz Sine Wave Outputs, 50 Ohm    
 F19 = 5 MHz Sine Wave Outputs, 50 Ohm    
 F20 = 10 MHz Sine Wave Outputs, 50 Ohm    
     
 I/O Slot C    
 G00* = Not Installed  
 G01 = Programmable Pulse Outputs, 50 Ohm  
 G02 = Programmable Pulse Outputs, 75 Ohm  
 G03 = 1.544/2.048 MHz Outputs, 50 Ohm, DC Coupled  
 G04 = 1.544/2.048 MHz Outputs, 75 Ohm, DC Coupled  
 G05 = 1.544/2.048 MHz Outputs, 50 Ohm, AC Coupled  
 G06 = 1.544/2.048 MHz Outputs, 75 Ohm, AC Coupled  
 G07 = Modulated IRIG-B Outputs  
 G08 = Programmable Pulse Fiber-Optic Outputs  
 G09 = Programmable Pulse 24 Vdc Outputs  
 G10 = Dual Relay Outputs  
 G11 = System 1 PPS Outputs, 50 Ohm  
 G12 = System 1 PPS Outputs, 75 Ohm  
 G14 = Frequency Outputs, 50 Ohm, DC Coupled  
 G15 = Frequency Outputs, 75 Ohm, DC Coupled  
 G16 = Frequency Outputs, 50 Ohm, AC Coupled  
 G17 = Frequency Outputs, 75 Ohm, AC Coupled  
 G18 = 1 MHz Sine Wave Outputs, 50 Ohm  
 G19 = 5 MHz Sine Wave Outputs, 50 Ohm  
 G20 = 10 MHz Sine Wave Outputs, 50 Ohm  
   
 Rear Panel Connector  
 H00* = Not Installed
 H01 = Screw Terminations
 H02 = Crimp Terminations
 
 Relay
 J01* = Standard Voltage (30 Vdc/250 Vac)
 J02 = High DC-Voltage (300 Vdc/250 Vac)

Receiver Characteristics

Timing Accuracy

Accuracy Note

Specifications apply at the 1 PPS/IRIG_B unmodulated/PP/PTP outputs when receiving one satellite in Position Hold Mode, as of date of publication.
Accuracy UTC/USNO

± 100 ns peak
Typical

± 40 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
Patent(s)

High-Reliability Holdover Method and Topologies: No. US 9,326,926 & US 9,979,406 B2

I/O Configuration

Output Connectors

One 32 pin pluggable terminal strip connector:

Output Signals

  • Programmable Pulse (six outputs)
  • IRIG-B modulated
  • MOSFET
  • Analog Input
  • Event Input
  • Relay Contacts
  • RS-232 (2 ports)
  • RS-485 (transmit only)

IRIG-B Modulated
One IRIG-B modulated output, 4 Vpp, 20 ohms source impedance. Configurable to Local or UTC time with C37.118.1 on or off, settings independent from Programmable Pulse IRIG-B output.

MOSFET
300 volt, 1 watt power dissipation open-drain FET driver with 24 Vdc output.

Programmable Pulse Output

Six programmable pulse outputs, high-drive 5 Vdc (125 mA at > 4 Vdc)

  • 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 polarity and pulse duration are programmable, duration 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

Input Signals

Analog Input
One single phase AC line voltage (50 Hz / 60 Hz, 300 Vac) input provides accurate measurements of system frequency, frequency error, and time deviation.

Event Inputs

One event timer channel with 100 ns resolution is standard. This function is driven by an external 5 V CMOS/TTL signal.

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 1205C)
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
USB

Micro-USB
Setup

Web based configuration

System

Ethernet

3 - Ethernet ports: 10/100 BT (standard) or Fiber (optional)

Protocols: NTP, SNTP, PTP (Power Profile), SNMP, ICMP, TCP, SSH, SCP, SSL, HTTP, HTTPS, DHCP
RS-232

2 - RS-232 ports (TXD, RXD, GND)

1200 baud to 230,400 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity
RS-422/485

1 - RS-422/485 port (TXD+,TXD-)
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

RS-232 and RS-422/485 are part of the 32 pin terminal block.

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/48 Vdc (22 Vdc to 67 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, G, H, J) listed below; except Power Supply which accommodates two.

A power supply and holdover oscillator must be specified.

I/O
1205optE01/F01/G01 Programmable Pulse Outputs, 50 Ohm, Dual BNC (Slot A/B/C)
1205optE02/F02/G02 Programmable Pulse Outputs, 75 Ohm, Dual BNC (Slot A/B/C)
1205optE03/F03/G03 1.544/2.048 MHz Outputs, 50 Ohm, DC Coupled, Dual BNC (Slot A/B/C)
1205optE04/F04/G04 1.544/2.048 MHz Outputs, 75 Ohm, DC Coupled, Dual BNC (Slot A/B/C)
1205optE05/F05/G05 1.544/2.048 MHz Outputs, 50 Ohm, AC Coupled, Dual BNC (Slot A/B/C)
1205optE06/F06/G06 1.544/2.048 MHz Outputs, 75 Ohm, AC Coupled, Dual BNC (Slot A/B/C)
1205optE07/F07/G07 Modulated IRIG-B Outputs, Dual BNC (Slot A/B/C)
1205optE08/F08/G08 Programmable Pulse, Fiber-Optic Outputs, Dual ST (Slot A/B/C)
1205optE09/F09/G09 Programmable Pulse, 24 Vdc Outputs, Dual Terminal Strip (Slot A/B/C)
1205optE10/F10/G10 Dual Relay Outputs, Dual Terminal Strip (Slot A/B/C)
1205optE11/F11/G11 System 1 PPS Outputs, 50 Ohm, Dual BNC (Slot A/B/C)
1205optE12/F12/G12 System 1 PPS Outputs, 75 Ohm, Dual BNC (Slot A/B/C)
1205optE13 Redundant GNSS Receiver (Slot A)
1205optE14/F14/G14 Frequency Outputs, TTL, 50 Ohm DC Coupled, Dual BNC (Slot A/B/C)
1205optE15/F15/G15 Frequency Outputs, TTL, 75 Ohm DC Coupled, Dual BNC (Slot A/B/C)
1205optE16/F16/G16 Frequency Outputs, TTL, 50 Ohm AC Coupled, Dual BNC (Slot A/B/C)
1205optE17/F17/G17 Frequency Outputs, TTL, 75 Ohm AC Coupled, Dual BNC (Slot A/B/C)
1205optE18/F18/G18 1 MHz Sine Wave Outputs, 50 Ohm, Dual BNC (Slot A/B/C)
1205optE19/F19/G19 5 MHz Sine Wave Outputs, 50 Ohm, Dual BNC (Slot A/B/C)
1205optE20/F20/G20 10 MHz Sine Wave Outputs, 50 Ohm, Dual BNC (Slot A/B/C)
1205optH01 Screw Terminal Connector (1205/1206)
1205optH02 Crimp Terminal Connector (1205/1206)
1205optJ01 Standard Voltage Relay (30 Vdc/250 Vac)
1205optJ02 High DC-Voltage Relay (300 Vdc/250 Vac)
Power
1205optA01 100 Vac to 240 Vac, 100 Vdc to 350 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1205optA02 24 Vdc/48 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1205optB01 100 Vac to 240 Vac, 100 Vdc to 350 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1205optB02 24 Vdc/48 Vdc Secure Pluggable Terminal Strip and Surge Withstand
Oscillator
1205optC01 Holdover OCXO 1 ms/24 h
Included
AS0094800 Rack Mount Kit (12xx series 1 RU) (preinstalled)
AS0099200 Arbiter Universal GNSS Antenna
CA0021315 1 15 m (50 ft) RG-6 Antenna Cable, RoHS
PD0053000 Quick Setup Guide (1205B/C)
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
AS0100300 Operation Manual (1205B/C and 1206B/C)
AS0102700 Screw Terminal Connector H01 (1205/1206)
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
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
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 75 m (250 ft) ; RG-11 100 m (328 ft). For the Models 120x: Used for RG-6 cable lengths greater than 100 m (328 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.

No software downloads available for this product
 
No additional software information is available for this product
Firmware Information (EPROM based firmware is not available for download)
1205_1206_Firmware_01.34_16May2023 Downloadable. Requires the web interface.
1205_1206_Firmware_SHA256_01.34_16May2023 1205_1206_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
 

Firmware Version and Related Information

Downloadable Firmware (1205_1206_Firmware)

Firmware update steps:

    The following are basic instructions. Check the ReadMe.txt for specific instructions.
  1. Download the firmware file.
  2. Unzip the firmware file.
  3. ***DISCONNECT*** the antenna from the rear panel. The update may still happen but disconnecting the antenna helps smooth the update process.
  4. Revert to http if using the https interface.
  5. Upload the tps_os-xx.xx.apf file.
  6. Reboot the clock after updating firmware to make sure that the new code is loaded.
VersionRev LevelVersion Notes
01.34 16May2023

NOTE: This is a repost.

The file posted on 25 May 2023 wrongly included the AIDoIP-01.01.apf file.

If you uploaded AIDoIP-01.01.apf after uploading tps3_os-01.34.apf to the clock then you will need to upload tps3_os-01.34.apf again to get all the updates.

Updates are not security related.

  1. Analog Input Data over Internet Protocol (AIDoIP) connection improvements
  2. Fixed Auth NTP connection
  3. Ethernet connection stability improvements.

Reposted to website: 31 May 2023
Originally posted to website: 25 May 2023
01.33 07Sep2022

Updates are not security related.

  1. Reposted to the web #2 because the wrong AIDoIP file was included in the zip file.
  2. Reposted to web site because the Analog Input Data over Internet Protocol (AIDoIP), frequency monitoring apf was not included in the zip file.
  3. Removed the errant digital signals on power-up.
  4. Fixed where the PPH output was active (high) on power-up until its trigger time passed.

Reposted to web site: 27 Oct 2022
01.32 22Apr2021

Updates are not security related.

  1. This is a re-release of 1.32 to include an update to the Analog Input Data over Internet Protocol (AIDoIP-01.01.apf). The update improves the stability of the analog data output when connecting with the Windows Telnet client. Follow the ReadMe.txt for uploading instructions.
  2. CLARIFICATION: This is a re-issue of the 1.32 zip file. The firmware version 1.32 has not changed. The zip file now includes a second firmware file (AIDoIP-01.01.apf) that needs to be loaded after the main firmware file (tps3_os‑01.32.apf). The ReadMe.txt contains the loading instructions.

Posted to web site: 28 Apr 2021
01.32 21Sep2020

Updates are not security related.

  1. This release ability to configure the 1205B/C and 1206B/C via SNMPv3. The only parameter currently supported for configuration using SNMP is Time Deviation.

Posted to web site: 13 Oct 2020
01.31 09Sep2020

Updates are not security related.

  1. Improve user interface (web) responsiveness.
  2. Add Analog over IP data for the frequency output. Frequency measurement data similar to the serial Vorne and ASCII broadcasts is available over the Ethernet via Telnet.
  3. Add bonding/link aggregation support for Port 2 and Port 3. These ports may be linked together, creating a third IP address that continues to respond if Port 2 or Port 3 is disconnected.

Posted to web site: 18 Sep 2020
01.29 12Mar2020

Updates are not security related.

  1. Fixed custom serial broadcast component "v02" to remove + sign at beginning.
  2. Code alignment for common code store.

Posted to web site: 26 May 2020
01.28 10Jan2020

Updates are not security related.

  1. Fixed default RS-485 setting to mirror COM1.
  2. Added Advanced tab in Network menu to configure Network Redundancy / Link Aggregation

Posted to web site: 25 February 2020
01.27 24Oct2019

Updates are not security related.

  1. Improved Normal mode stability.
  2. Fixed magnitude scaling for the Frequency and Time Monitor.
  3. Fixed IRIG-B Daylight Saving Time (DST) active bit did not set when active.
  4. Added RS-485 functionality. Can now mirror COM 1 RS-232 or AUX PROG PULSE. **NOTE: The default setting for RS-485 will change to AUX PROG PULSE with this update. The tab to change AUX PROG PULSE may not be present in the web interface. However, it is possible to change back to mirror COM 1. A fix will be addressed in the next release.

Posted to web site: 9 November 2019
01.26 12Feb2019

Updates are not security related.

  1. Stability improvements.
  2. Adjust PPS outputs to improve delays.
  3. Display time deviation even if input signal is not present.
  4. Accumulate time deviation integer and fraction seperately to preserve resolution when deviation is large.
  5. Modified Vorne broadcast to match OP28 when input signal is not present.
  6. Improve redundant receiver performance.
  7. Fix run-time values and power-up count (BZ850).
  8. Add Galileo to satellites display in web GUI Time Source->GNSS page (BZ848).
  9. Add Beidou (BDN) support.
  10. Improved holdover oscillator health measurement to minimize false failure indications.

Posted to web site: 24 May 2019
01.19 23Aug2018

Updates are not security related.

  1. Fixed System Time Deviation broadcast (Vorne and Custom S03)
  2. Improved GNSS stability.
  3. Improved epoch spoofing support.
  4. Other code cleanup for performance and consistency.

Posted to web site: 1 October 2018

1205_1206_Firmware_SHA256

VersionRev LevelVersion Notes
01.34 16May2023
01.33 07Sep2022
01.32 22Apr2021
01.32 21Sep2020
01.31 09Sep2020
01.29 12Mar2020
01.28 10Jan2020

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

GPS Substation Clock Requirements
Download gps_substation_clock_requirements.pdf (25 kB) »

IRIG-B Time Code Accuracy, IED and System Design Issues
Download irig_accuracy_and_connection_requirements.pdf (31 kB) »

NERC PRC-002 and PRC-018 Compliance Statement
Download pd0042900a_NERC_PRC-002_PRC-018_compliance_statement.pdf (70 kB) »

Time in the Power Industry: How and Why We Use It
Download TimeInThePowerIndustry.pdf (407 kB) »

Why GPS Clocks Are Not Free
Download why_gps_clocks_arent_free.pdf (12 kB) »

Specifying Holdover Performance
Download PD0057900_Specifying_Holdover_Performance.pdf (1 MB) »

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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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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Windows® Time Service Configuration
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Chassis Dimensions
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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
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Model 1205B/C CE Declaration
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Antenna Cable Assemblies RoHS2 Declaration of Conformity
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