Model 1202B/C GNSS Synchronized Clock (100ns)

Next generation multi-satellite timing source for precision applications. Featuring enhanced performance and security (EPS). Designed to drop-in replace Model 1084A/B/C installations.

Model 1202B/C User Manual
Download PDF(6 MB) »

Model 1202B/C Quick Setup Guide
Download PDF(750 kB) »

Model 1202B/C Data Sheet
Download PDF(673 kB) »

GNSS Antenna Data Sheet
Download PDF(4 MB) »

Model 1202B/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.

There are a total of six BNC outputs. Three have ± 75 mA of drive current and are jumper selectable to unmodulated IRIG-B, modulated IRIG-B, 1 PPS, programmable pulse, or event input. Three have ± 125 mA of drive current and are software configurable to independent programmable pulse modes (IRIG-B unmodulated, Seconds Per Pulse, Hourly Pulse, Daily Pulse, One Shot, DCF-77). The Model 1202B/C is capable of driving multiple loads in parallel.

Two SPDT (form C) fail-safe relays are also included and are configurable to Out-of-Lock, Fault, Alarm, Stabilized, or Programmable Pulse.

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 1202B/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.

Key Features
Specs
Options
Accessories
Software
Firmware
Related Resources

Accuracy of ± 100 ns
Standard: Unmodulated IRIG-B, modulated IRIG-B, 1 PPS, and Two Form C (SPDT) fail-safe relays(Out-of-Lock, Fault, Alarm, Stabilized, or Programmable Pulse)
Options include an internal NTP/PTP server, High Drive IRIG-B outputs, and Power System Time, Frequency and Phase Monitor
1202C 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

1202

Axx

Bxx

Cxx

Dxx

Exx

Fxx

Gxx

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

Fiber Optic Output

D00* = Not Installed

D01 = PP/IRIG-B Output, 820 nm Type ST multimode

Option Slot A

E00* = Not Installed

E01 = Second RS-232 Port

E02 = Power System Frequency and Time Monitor

E03 = PP/IRIG-B over RS-485

Option Slot B

F00* = Not Installed

F01 = Four configurable Outputs

F02 = Four configurable Fiber-Optic Outputs

F03 = 8-Channel High Drive IRIG-B Outputs

F04 = Power System Time, Frequency, and Phase Monitor

F05 = Four Additional Outputs with Dry Contact and + 25/50 Vdc

F06 = Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Copper

F07 = Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Fiber

F08 = Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Fiber/Fiber

Relay

G01* = Standard Voltage (30 Vdc/250 Vac)

G02 = High DC-Voltage (300 Vdc/250 Vac)

Unit Configuration

J00* = Factory Default

J01 = Customer-Specified

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 BNC connectors with jumper-selectable signals:
Port 1: IRIG-B modulated, IRIG-B unmodulated, 1 PPS, Programmable Pulse
Port 2: IRIG-B modulated, 1 PPS, IRIG-B unmodulated, 1 PPS, Programmable Pulse, or IRIG-B Modified Manchester
Port 3: IRIG-B unmodulated, 1 PPS, Programmable Pulse, or Event Input

Output characteristics:

5 V CMOS bus drivers with 50 ohms source impedance and ± 75 mA drive capability.
4 Vpp, 20 ohms source impedance (IRIG- B modulated only)

Three BNC connectors with programmable signals:
Port 4: Choose Independent Programmable Pulse
Port 5: Choose Independent Programmable Pulse
Port 6: Choose Independent Programmable Pulse

Output characteristics:

5 V FET drivers with 50 ohms source impedance and ± 125 mA drive capability.

Output Signals

IRIG-B is configurable to Local or UTC time with C37.118.1 on or off, settings independent for each Programmable Pulse Channel

Programmable Pulse Output

IRIG-B unmodulated (UTC/Local, C37.118.1 On/Off)
Every 1 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 to 600 seconds, except in one-shot mode, where the output is Low prior to the specified time and High thereafter. IRIG-B settings independent for each channel.

Relay Contacts

Two Form C (SPDT) fail-safe, 0.3 A at 130 Vdc; 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 BNC 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 1202C)
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) 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, GND) RS-422/485 (TXD+, TXD-) COM2 (Optional): RS-232 (TXD, RXD, GND)
Broadcast modes	interrogate (default) 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, G) listed below; except Power Supply which accommodates two.

A power supply and holdover oscillator must be specified.

I/O
1202optD01	Single Configurable Fiber-Optic Output
1202optE01	Second RS-232 Port
1202optE02	Power System Frequency and Time Monitor
1202optE03	PP/IRIG-B Over RS-485
1202optF01	Four Configurable Outputs
1202optF02	Four Configurable Fiber-Optic Outputs
1202optF03	8-Channel High Drive IRIG-B Output
1202optF04	Power System Time, Frequency, and Phase Monitor
1202optF05	Four Additional Outputs with Dry Contact and + 25/50 Vdc
1202optF06	Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Copper
1202optF07	Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Copper/Fiber
1202optF08	Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server Fiber/Fiber
1202optG01	Standard Voltage Relay (30 Vdc/250 Vac)
1202optG02	High DC-Voltage Relay (300 Vdc/250 Vac)
Power
1202optA01	100 Vac to 240 Vac, 100 Vdc to 350 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1202optA02	24 Vdc/48 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1202optB01	100 Vac to 240 Vac, 100 Vdc to 350 Vdc Secure Pluggable Terminal Strip and Surge Withstand
1202optB02	24 Vdc/48 Vdc Secure Pluggable Terminal Strip and Surge Withstand
Oscillator
1202optC01	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
PD0055700	Quick Setup Guide (1202)
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
AS0107900	Operation Manual (1202)
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
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.

Click to Download Latest Version of Software
1202_Utility_06May2021_0107	View and modify Model 1202B/C configuration settings. Default firmware upload password = admin
1202_Utility_SHA256_06May2021_0107	1201_Utility SHA256 checksum

Software Version and Related Information

1202_Utility

The software interface specifically written for the Model 1202B/C.

Allows configuration of Model 1202B/C
Supports viewing and modification of existing configuration on Model 1202B/C from your PC.
Saves the existing configuration file from the Model 1202B/C to your PC.
Ability to upload firmware to the Model 1202B/C.
Compatible with Windows 7, 8, and 10

Version	Rev Level	Version Notes
06May2021	01.07	Fixed: Flash Failure Fault reported as a GNSS Fault in the Utility (BZ1018) Posted to web site: 02 June 2021
28Oct2019	01.06	Fixed Slot B option list did not show all options when Slot A had Power System Frequency and Time Option selected Fixed BeiDou configuration file support. Can use saved configuration file from older utility version Enhanced so more specific fault messages are reported on the Faults Tab (BZ931) Posted to web site: 9 November 2019.
23Jul2019	01.04	Compatible with firmware release 01.08. Added support for the optional Time and Frequency Monitor. Added support for the optional RS-485 module. Posted to web site: 30 July 2019.
29Apr2019	01.03	Improved version checks when uploading firmware. Posted to web site: 03 May 2019
15Jan2019	01.02	Fixed Verify Configuration. Did not verify all settings. Fixed issue where Galileo configuration did not save through a power cycle. Added support for Model 1200B Added support for BeiDou GNSS constellation. Added GNSS signal to noise ratio on Status Tab in Utility. Added -- for disabled constellations and signal to noise ratio on Status Tab in Utility. Added support for time reference and C37.118.1 for IRIG-B modified Manchester outputs. Changed 1 PPS output to 10 mS pulse width for consistency with other Arbiter clocks. Changed "Relay" to "Status Relay" on Status Tab in Utility. Changed "Acquiring Satellites" to "Acquiring Time" on Status Tab in Utility. Menu and Display updates for consistency with other Arbiter clocks. Other code cleanup for performance and consistency. Posted to web site: 15 January 2019
21Aug2018	01.01	Fixed support for Option 28 Com Port Broadcast Mode Fixed message for successful firmware upload where it incorrectly reported "and Verified" Replaced "Acquiring" with "Acquiring Satellites" Reworked spin button control for Local Time Offset to prevent periodic pauses when Up/Down buttons are pressed and held
24May2018	01.00	Initial release.

1202_Utility_SHA256

Version	Rev Level	Version Notes
06May2021	01.07
28Oct2019	01.06

Firmware Information (EPROM based firmware is not available for download)
1202_Firmware_16Sep2021_0117	Downloadable. Requires 1202_Utility (See Software tab).
1202_Firmware_SHA256_01.17_16Sep2021	1202_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 (1202_Firmware)

Version	Rev Level	Version Notes
16Sep2021	01.17	Updates are not security related. Fixed being able to set the delta T with the utility when the NTP/PTP option was installed (BZZ1025) Posted to web site: 21 September 2021
25May2021	01.16	Updates are not security related. Removed extra in EA serial event retrival (nnA command) (BZZ1019) Fixed issue with UART code buffer size Updating two letter commands to match other clocks. Posted to web site: 02 June 2021
19Jan2021	01.15	Updates are not security related. Improved compatibility between firmware and utility when using special serial broadcasts (BZ1010). Posted to web site: 28 Jan 2021
04May2020	01.14	Updates are not security related. Prepping firmware for a different compiler. Fixed relay "stabilized" operation. When selected, the status was always reported as "stabilized". Added 0OU command to return single trigger time mark. Posted to web site: 26 May 2020
02Mar2020	01.13	Updates are not security related. Fixed serial commands DL, DU, TL, and TU to remove an additional <CR><LF> first seen in version 01.12 (BZ981). DL = return local date. DU = return UTC date. TL = return local time. TU = return UTC time. Update copyright year. Posted to web site: 3 March 2020
16Dec2019	01.12	Updates are not security related. Fixed: Power System Frequency and Time Monitor version now displays properly with serial command when NTP/PTP server is also installed (BZ979). Posted to web site: 13 January 2020
11Nov2019	01.11	Updates are not security related. Improved spoofing sensitivity Improved Normal mode stability Fixed NTP/PTP status. Was not available with main board Frequency and Time Monitor option (BZ965) Fixed two-letter serial commands to match previous versions Fixed Three phase Frequency and Time Monitor to initialize when configured with the Utility (BZ971) Cleaned Option 28 information on front panel 4 (BZ960). Fixed custom broadcast to allow for UTC or LCL time selection (BZ963) Fixed FTM screen roll around (up key) for single and split phase Fixed issue with COM input not working when broadcast active Enhancement to turn everything on (LEDs) for 1 second at power up, if configured with C-display. Posted to web site: 11 November 2019
09Jul2019	01.08	Updates are not security related. Added support for the optional Time and Frequency Monitor. Added support for the optional RS-485 module. Improved drift performance when unlocked. Posted to web site: 30 July 2019
11Mar2019	01.06	Updates are not security related. 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. Added ability to start Learn Mode from the front panel. Posted to web site: 15 March 2019
18Dec2018	01.05	Updates are not security related. BeiDou now available as selection. Clean up menu structure. Other code cleanup for performance and consistency. Posted to web site: 11 January 2019
21Aug2018	01.04	Updates are not security related. GNSS stability improvements. Improved epoch spoofing support. Clean up menu structure with Option 28 Power System, Time Frequency, and Phase Monitor. Changed Learn mode from count up to count down. Other code cleanup for performance and consistency. Posted to web site: 1 October 2018

1202_Firmware_SHA256

Version	Rev Level	Version Notes
01.17	16Sep2021
01.16	25May2021
01.15	19Jan2021
01.14	04May2020
01.13	02Mar2020

Downloadable MIB File (Arbiter All MIB file)

Version	Rev Level	Version Notes
03DEC2012	0.0003

Downloadable All MIB File checksum (Arbiter All MIB File_SHA256)

Version	Rev Level	Version 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.

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

NTP/PTP Firmware_SHA256

Version	Rev Level	Version Notes
2.08_update-00.11

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

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

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
Download application_note_101.pdf (90 kB) »

App Note 102: Synchronizing End-to End Relay Testing with Model 1088B
Download application_note_102.pdf (18 kB) »

App Note 103: Large Format Displays with Arbiter products
Download application_note_103.pdf (16 kB) »

Continual Self Calibration with Power System Time, Frequency and Phase Monitor Option
Download power_system_time_freq_phase_monitor_continually_cal.pdf (34 kB) »

GPS Antenna Mounting Bracket
Download antenna_mnt_bracket_brief.pdf (462 kB) »

GPS Antenna Mounting Bracket Instructions
Download pd0024700_gps_antenna_mounting_bracket.pdf (580 kB) »

GNSS Antenna Preamplifier Installation Instructions
Download pd0025300_gnss_antenna_preamplifier.pdf (3 MB) »

IRIG Standard 200-16
Download irig-b_200-16.pdf (857 kB) »

IRIG-B Specifications
Download irig_b_spec_brief.pdf (488 kB) »

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) »

Windows^® Time Service Configuration
Download w32time.pdf (14 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
Download pd0045800_surge_protector_installation_instructions.pdf (110 kB) »

Reducing Overshoot and Ripple in Arbiter Products with High Drive Outputs
Download pd0046200_reducing_high_drive_overshoot.pdf (277 kB) »

Timing Signals, IRIG-B and Pulses
Download pd0043200_timing_signals_overview.pdf (197 kB) »

Catalogo de Productos de Sincronizacion y Frecuencia
Download catalogo_de_productos_de_sincronizacion_y_frecuencia.pdf (312 kB) »

Model 1202B/C CE Declaration
Download 1202BC_CE_declaration.pdf (103 kB) »

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