Model 1093B/C GPS Satellite-Controlled Clock (500 ns) - DISCONTINUED

An Arbiter Systems^® best seller, Model 1093B/C provides accuracy, flexibility and economy to meet a broad range of industry applications.

Model 1092A/B/C/1093A/B/C User Manual
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Model 1092A/B/C/1093A/B/C User Manual Español
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Model 1093B/C Quick Setup Guide
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Model 1093B/C Quick Setup Guide Español
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Model 1093B/C Data Sheet
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Model 1093B/C Data Sheet Español
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GNSS Antenna Data Sheet
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Model 1093B/C delivers better than 500 ns accuracy and includes the most highly sought after features in a precision time clock as standard.

With two terminal strip outputs providing unmodulated IRIG-B and 1 PPS signals, the 1093 is capable of driving multiple loads in parallel. An optional modulated IRIG-B port is available adding greater flexibility.

Like other Arbiter clock models, various options are available to add features such as NTP (Network Time Protocol) 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.

Versions B/C offer various interface options (see photos and Key Features tab). Each product includes the GPS antenna and cable, an appropriate power inlet and power cord, a rack mount kit and an operations manual, all backed by a Limited Lifetime Warranty to the original owner/purchaser.

Model 1093B/C is available with two front panel configurations. See photos and Key Features tab for more information.

Accéder au résumé en français

Key Features
Specs
Options
Accessories
Software
Firmware
Related Resources

Accuracy < ± 500 ns typical
Unmodulated IRIG-B and 1 PPS included, modulated IRIG-B optional
Options include an internal NTP server, High Drive IRIG-B outputs, One Form C (SPDT) fail-safe locked relay, and Power System Time, Frequency and Phase Monitor

Versions B/C offer various interface options (see photos):

1093B adds to the LEDs an LCD display and keypad, providing easy access to setup and system status information.
1093C includes both the operating status LEDs, the LCD display and keypad, and includes a large LED time display.
IEEE C37.118-2005 compliant for Synchrophasor use.

Receiver Characteristics

Timing Accuracy

Accuracy Note	Specifications apply at the 1 PPS output, in the presence of Selective Availability (SA), as of date of publication
Accuracy UTC/USNO	± 500 ns peak

Position Accuracy

10 meters, rms, 90 % confidence

Satellite Tracking

Twelve (12) channel, C/A code (1575.42 MHz). Receiver simultaneously tracks up to twelve satellites. Results from all tracked satellites are averaged in Position-Hold Mode or, with Position-Hold Mode off, using least-squares estimation.

Acquisition

150 seconds typical, cold start
15 minutes, 90 % confidence, cold start
40 seconds, with almanac less than 1 month old
15 seconds, with ephemeris less than 4 hours old
The GPS Data Backup Battery is now included in the Model 1093s. This feature improves acquisition time to as little as 15 seconds after a brief power loss by supplying constant power to the real-time clock and RAM in the GPS receiver module.

I/O Configuration

Output Connectors

Two standard: one IRIG-B Unmodulated and one 1 PPS; Type: bus driver, 5 V CMOS; 10 ohms source impedance; ± 75 mA drive capability; pluggable terminal strip.
Open-drain FET drivers (400 V, 220 mA, 1 W power dissipation) can also be fitted; contact tech support.

Programmable Pulse Output

One programmable output pulse (by a jumper connection) that may be output on a terminal strip connector or the AUX OUT pin on either RS-232 Port.
Four modes:

Every 1 second to 60,000 seconds, starts top of the minute
Hourly at a specified offset
Daily at a specified time of day
One shot at a specified time of year

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.

Event Inputs

One event timer channel with 1 µs resolution is standard. This function may be driven by the start bit of a received character on the serial port, or (by internal connection) an external 5 V CMOS/TTL signal at one of the terminal strip connectors.

Interface

Operator

Display	Status LEDs (Models 1093B/C) 2 character x 20 character supertwist LCD (Model 1093B/C) 14 mm (0.56 in) LED; 9 digits (Model 1093C)
Functions	Time: UTC or local Position: latitude, longitude, altitude Receiver and clock status 1 PPS (input) deviation Event time
Status LEDs	Operate (green) Unlocked (red)
Keyboard	Eight keys; select display functions or setup menus (Model 1093B/C)
Setup	Local time offset Output code select: Local/UTC Daylight Saving Time (Set Summer Time): Off/On/Auto USA/Auto EUR/Auto CUS Backlight control: On/Off/Auto Event input: Event/1 PPS Programmable Pulse setup Antenna delay Out of lock time: 1 minute to 99 minutes, Off, or Zero Delay Auto-Survey: On/Off, Survey duration Position Hold: On/Off, Position Auto/Manual Option Configuration and Setup Serial port: RS-232

System

RS-232	1200 baud to 19,200 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity Second RS-232 port available (1093opt19) Connector: Male 9-pin D-sub (TXD, RXD)
RS-422/485	Optional driver can also be fitted (1093opt94)
Broadcast modes	Standard ASCII (IRIG-J) Extended ASCII ASCII with Time Quality ASCII with Time Quality and Year Vorne large-display time Status/Alarm Event data
Connector	Male 9-pin D-sub (TXD, RXD, AUX IN, AUX OUT) AUX OUT can provide programmable pulse function at RS-232 levels

Power Requirements

Standard

Voltage	(Option 07) 85 Vac to 264 Vac, 47 Hz to 440 Hz, 20 VA maximum or 110 Vdc to 370 Vdc, 15 W maximum
Inlet	(Option 07) IEC-320 with fuse and mating cordset. Specify option P01 - P10 Available cordset plug style and specifications are described in the Options and Accessories section.

General

Physical

Size	1 RU rack mount or tabletop, 260 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
Antenna	Cable Connection: F-type Size: 80 mm hex (across flats) x 84 mm tall (3.2 in x 3.3 in), including connector Weight: 170 g (6 oz)
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: 0 °C to + 50 °C (- 20 °C to + 70 °C typical) Nonoperating: - 40 °C to + 75 °C
Humidity	Noncondensing
EMC	Radiated susceptibility: passes walkie-talkie test. 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 801-4

Certificates and Approvals

CE mark/label and certificate:

Except as noted otherwise, only one I/O Option may be installed. Available options are listed below and described in the Options and Accessories section.

I/O
1093opt19	Second RS-232 Port
1093opt20A	Four Configurable Fiber-Optic Outputs
1093opt27	8-Channel High Drive IRIG-B Output
1093opt28	Power System Time, Frequency, and Phase Monitor
1093opt29	Four Additional Outputs with Dry Contact and + 25/50 Vdc
1093opt34	Network Time Protocol (NTP) / Precision Time Protocol (PTP) Server
1093opt36	Four Configurable Outputs
1093opt92 ¹	IRIG-B Modulated Output
1093opt93 ¹	Out-of-lock Relay 1 Form C SPDT
1093opt94 ¹	RS-422/485 Driver
1093opt95	Four BNC Connectors, (Parallel to Pluggable Terminal Strip)
1093opt96 ¹	1 PPS Output Reconfigured to Programmable Pulse
1093opt97 ¹	IRIG-B Output Reconfigured to Programmable Pulse
1093opt98 ¹	1 PPS Output Reconfigured to Event Input
General
1093opt01	LCD Backlight
1093opt04	On/Off Switch (1084B/1093B)
Power
1093opt07	IEC-320 Power Inlet 85 Vac to 264 Vac RMS, 110 Vdc to 370 Vdc
1093opt08	10 Vdc to 60 Vdc Terminal Power Strip and Surge Withstand
1093opt10	85 Vac to 250 Vac RMS, 110 Vdc to 350 Vdc Terminal Power Strip and Surge Withstand

¹ May be ordered independently from other I/O options

Included
AS0028200	19 Inch Rack Mount Kit
AS0099200	Arbiter Universal GNSS Antenna
CA0021315 ¹	15 m (50 ft) RG-6 Antenna Cable, RoHS
P01 - P10 ²	Country specific power cord with straight female end
PD0052700	Quick Setup Guide (1093)
Available
AP0003400 ³	BNC (Male) Breakout to 100 mm Wires
AP0007700 ⁴	Modular DB-9 to RJ-11 Adapter, Preconfigured
AP0008900 ⁵	BNC (Female) Breakout to 100 mm Wires
AP0013400	GNSS Antenna Cable Splitter, F-Type, 950-2150 MHz, One Port Pass DC
AP0014900 ⁶	BNC (Female) Breakout to Screw Terminal
AP0015000 ⁷	BNC (Male) Breakout to Screw Terminal
AS0033100	Rack Slide Kit
AS0035400	Operation Manual (1092/1093)
AS0044600	Antenna Mounting Kit
AS0044700 ⁸	21 dB In-Line Pre-amplifier
AS0048900	Antenna Grounding Block Kit, RoHS
AS0056600	24 Inch Rack Mount Kit
AS0067200 ⁴	Programming Port Cable with adapter
AS0094500	GNSS Surge Arrester
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
CA0021345 ¹	45 m (150 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 ⁹	Option 28 System Frequency Reference Cable, 6 m (20 ft)
CA0023600 ⁴	RJ-11 Cable Four-Pin Crossed, 2 m (7 ft)
CA0026000 ¹⁰	Power Cord IEC-320 to Bare Leads
CN0027700	Type F, Male, RG-6 Antenna Cable Crimp-on Connector, non-RoHS
CN0027800	Type F, Male, RG-11 Antenna Cable Crimp-on Connector, non-RoHS
CN0050700	Type F, Male, RG-6 Antenna Cable Compression Connector, RoHS
CN0050800 ¹¹	Type F, Male, RG-6 Plenum Rated Antenna Cable Compression Connector, RoHS
CN0051300	Type F, Male, RG-11 Antenna Cable Compression Connector, RoHS
TF0006000	Type F, RG-11 Antenna Cable Crimp Tool
TF0006400	Type F, RG-6 Antenna Cable Crimp Tool
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 ¹²	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 Only applies if Power Option 07 is ordered
³ Converts female BNC-terminated coaxial cable to pair of wires.
⁴ Used with retired options: Option 32 or Option 33.
⁵ Converts male BNC-terminated coaxial cable to pair of wires.
⁶ Converts pair of wires to female BNC.
⁷ Converts pair of wires to male BNC.
⁸ 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)
⁹ Used with Option 28.
¹⁰ Used with Option 07.
¹¹ Indoor use only. Not weather resistant. Not UV radiation protected.
¹² 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
Tera Term_01Jan2010_23	Terminal program that can capture data from Models 930A and 931A. Also, can program the Satellite Clocks via serial commands. Modern version is available from their website: https://teratermproject.github.io/index-en.html
Tera Term SHA256_01Jan2010_23	Tera Term SHA256 checksum

Software Version and Related Information

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.

Tera Term SHA256

Firmware Information (EPROM based firmware is not available for download)
1092/1093_Firmware_21Mar2017	Requires an EPROM update from Arbiter.
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

EPROM update (1092/1093_Firmware)

Version	Rev Level	Version Notes
21Mar2017		Updates are not security related. Front panel SETUP menu of the B7 (OPT28 1PPS) serial broadcast incorrectly included the SELECT UTC OR LOCAL BROADCAST TIME submenu. The Option 28 main menu is the correct place to set Local or UTC time for the Option 28 data.
03Nov2016		Updates are not security related. Fix leap second operation to properly warn and implement the leap second. Changed the IRIG-B Daylight Saving Time (DST) pending bit to change state at xx:59:01 (was starting at xx:59:00). Now it is consistent with Leap Second Pending bit operation. Fixed the IRIG-B Daylight Saving Time (DST) pending bit to properly change state when exiting DST.
30Nov2015		Baseline code alignment with other legacy clock models. Does not affect clock operation at the outputs (BZ734).
02Nov2015		DST stop error. Not exiting DST mode properly when "day of week" value matches the first day of the following month (BZ733). Example: DST will not properly stop if DST stop was set to Last Sunday of October and November 1 is also on a Sunday. Add Option 36 as a Slot B selection. B8 broadcast output was missing a colon.
13Jun2013		Option 34 and Option 35 updates: PTP enable/disable now shows on front panel display. Enabled leap second flags, leap second application time (seconds of year), and UTC-GPS seconds offset. Fixed formatting related to the version strings.
11Aug2011		Update to the time quality functionality so it no longer displays locked, maximum accuracy immediately after reacquiring satellites.
26May2011		Fix IP address display to use periods (.) instead of colons (:).
12May2011		Add Option 34/35 support. Add "IP" serial command to return Option 34/35 IP addresses. Add display of Option 34/35 MAC addresses Add bit to indicate if unit has ever been locked to GPS. Update NTP status screens.
18Oct2010		Update serial "RD" output to be consistent across all clocks (reference BZ 489). Fix Option 28 XI configuration command (reference BZ 490). Leap second pending always 0 for Motorola 8-channel receiver (reference BZ 632). Fix 1093 Optional RS232 port periodically responded with "garbage" data (reference BZ 635).
02Nov2009		Fix power-up set defaults: Incorrectly had to wait until "SETUP" key released. Possible survey fix: "Zero" positions will now be ignored when doing survey calculation. Complete "Position Hold ID" (user or survey position flag) Block user from changing user position or position hold setting while survey active. Broadcast format time moved from the 20ms mark to 100ms mark. It was moved to give Option-28 enough time to format broadcast messages. (Opt-28 broadcast data was being copied while it was still being update causing some "0x00" characters to randomly appear in the message) DEBUG CODE: Output lat-long dif when debug_mode broadcast set to mode 2.

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) »

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) »

Internal Network Time Protocol (NTP) Server -DISCONTINUED-
Download ntp.pdf (22 kB) »

Internal Network Time Protocol (NTP) Server Español -DISCONTINUED-
Download ntp_option32_espanol.pdf (129 kB) »

Option 32: Internal NTP Server Setup and Operation Guidelines -DISCONTINUED-
Download ntp_option32_english.pdf (279 kB) »

Option 33: Dual Internal NTP Server Setup and Operation Guidelines -DISCONTINUED-
Download ntp_option33_english.pdf (301 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) »

Arbiter Time Service Installation Instructions
Download pd0041300_ArbiterTimeServiceInstall.pdf (382 kB) »

Chassis Dimensions
Download chassis.pdf (4 MB) »

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

Model 1092-93A/B/C Firmware Upgrade Instructions
Download 1093_DST_ROM_instructions.pdf (93 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) »

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) »

Press Release: Leap Second Anomaly December 2016
Download PD0054900_LeapSecondPressRelease.pdf (70 kB) »

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