Model 1092A/B/C GPS Satellite-Controlled Clock

The Arbiter Systems^®, Inc. Model 1092A/B/C GPS Satellite-Controlled Clock is a tabletop GPS timing source for applications which do not require the ultimate, 100 ns accuracy of our higher-performance models. The Model 1092A/B/C has 1 µs worst-case accuracy, to meet the requirements of a broad range of applications. The Model 1092A has two LEDs to monitor operating status. The Model 1092B adds an LCD setup/status display and a keyboard. The Model 1092C adds a large (14 mm or 0.56 in.) LED time display to the status LEDs. In all versions, twelve receiver channels provide optimum performance.

Two pluggable terminal strip outputs provide unmodulated IRIG-B and 1 PPS. A modulated IRIG-B output (1092opt92) is available on a third pluggable terminal strip output. These outputs have substantial drive capability to easily drive multiple loads wired in parallel and can be reconfigured to provide other output signals or an event-capture input.

The GPS Data Backup Battery is now included in the Model 1092A/B/C. 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.

Another available option is the Form C (SPDT) fail-safe, LOCKED relay (1092opt93) that is compatible with 129 Vdc digital fault recorder inputs.

An event-capture input is standard, and may be wired to one of the pluggable terminal strip connectors or used for synchronizing data collection on an external computer via the serial port. This input has 1 µs resolution. A programmable pulse output may be used to generate an output pulse at the IRIG-B unmodulated or the 1 PPS outputs in addition to the AUX OUT on the RS-232 Port.

Power is provided from an external (wall-mount) plug-in power supply. The Model 1092A/B/C can also be rack mounted with the available Rack Mount Kit (AS0044500), in a standard, 483 mm (19 in.) EIA rack.

Also available, the Model 1093A/B/C GPS Satellite-Controlled Clock provides the same performance and functionality as the Model 1092A/B/C, but has a full-size rack-mountable chassis and several internal power supply options.

Model 1092A/B/C Specifications

Receiver Characteristics:

Timing Accuracy:

Specifications apply at the 1 PPS output, in the presence of Selective Availability (SA), as of date of publication.

UTC/USNO: ±1 µs peak

Position Accuracy:

25 meters, USA Department of Defense Selective Availability (SA) off.
100 meters, Selective Availability on.
Altitude, 140 meters, Selective Availability on.
All specifications rms, 95% confidence, with Position-Hold Mode off and receiving at least four satellites

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:

2 minutes typical, cold start
15 minutes, 90% confidence, cold start
40 seconds, 90% confidence, with almanac less than 1 month old
15 seconds, 90% confidence, with ephemeris less than 4 hours old
The GPS Data Backup Battery is now included in the Model 1092A/B/C. 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:

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 factory.

Event A Input:

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.

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

I/O Options:

IRIG-B Modulated (1092opt92): bus driver, 4 Vpp, 20 ohms source impedance; drives a 50-ohm load at 3 Vpp; pluggable terminal strip

Second RS-232 Port (1092opt19): Provides all the same capabilities as the standard RS-232C serial port except there is no AUX IN line. AUX OUT provides programmable pulse function at RS-232 levels.

Relay contacts (1092opt93): 1 set, Form C (SPDT) fail-safe, 0.3 A at 130 Vdc; Locked function.

Interface:

Operator:

Display:

Status LEDs (Models 1092A/B/C)
2 x 20 character supertwist LCD (Model 1092B)
14 mm (0.56 in.) LED; 9 digits (Model 1092C)

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)

Keypad: Eight keys; select display functions or setup menus (Model 1092B)

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 to 99 minute(s), 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 to 19,200 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity

Interrogate mode

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

RS-422/485 driver can also be fitted (1092opt94)

Second RS-232 port available (1092opt19)

Connector: Male 9-pin D-sub (TXD, RXD)

Certifications and Approvals:

CE mark/label and certificate

Power Requirements:

Standard:: Wall mount plug-in transformer: 9 Vdc/500 mA, 120 Vrms, 60 Hz UL/CSA; Contact factory for other voltages (input accepts 9 to 15 Vdc)

General:

Physical:: Size: 43 H x 218 W x 257 mm deep, 1 RU with Rack Mount kit, AS0044500.
508 x 381 x 203 mm (20 x 15 x 8 in.), shipping; Weight: 1.4 kg (3 lbs), net
5.5 kg (12 lbs), shipping
Antenna:: Mounting: 0.75 in. pipe (1 in. - 14 marine) thread; Cable Connection: F-type; Size: 77.5 dia. x 66.2 mm (3.05 x 2.61 in.); Weight: 170 grams (6.0 oz)
Antenna Cable:: Type: RG-6, 15 m (50 ft) provided; Weight: 0.69 kg (1.52 lbs) per 15 m
Environmental:: Operating Temperature: 0° to +50° C (-20° to +70° C typical); Nonoperating Temperature: -40° to +75° C; Humidity: Noncondensing; EMC: Radiated susceptibility: passes walkie-talkie test.

Options:

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

I/O:

Order Number:	Description
1092opt19:	Second RS-232 Port
1092opt92:	IRIG-B Modulated Output [May be combined with other I/O options.]
1092opt93:	Out-of-Lock Relay, 1 Form C (SPDT) [May be combined with other I/O options.]
1092opt94:	RS-422/485 half-duplex [May be combined with other I/O options.]
1092opt96:	1 PPS Output Reconfigured to Programmable Pulse [May be combined with other I/O options.]
1092opt97:	IRIG-B Output Reconfigured to Programmable Pulse [May be combined with other I/O options.]
1092opt98:	1 PPS Output Reconfigured to Event Input [May be combined with other I/O options.]

General:

Order Number:	Description
1092Bopt01:	LCD Backlight

Accessories:

Included:

Order Number:	Description
AS0035400:	1093/1092 Operation Manual
AS0076200:	GPS Antenna, pipe mountable
CA0021315:	15 m (50 ft) RG-6 Antenna Cable
P01W-P10W:	Power Cord Available cordset plug style and specifications are described in the Options/Accessories section.

Available:

Order Number:	Description
AS0044500:	Rack Mount Kit
AS0044600:	GPS Antenna Mounting Bracket
AS0044700:	21 dB Pre-Amp, In Line - For use with cable lengths greater than 75 m (250 ft)
AS0044800:	RG-11 Crimp Tool + 25 F-type Connectors
AS0048900:	Antenna Grounding Block Kit
AS0049000:	GPS Surge Protector Kit
AS0062000:	High Interference GPS Antenna and Mounting Adapter Kit
CA0021315:	15 m (50 ft) RG-6 Antenna Cable
CA0021330:	30 m (100 ft) RG-6 Antenna Cable
CA0021345:	45 m (150 ft) RG-6 Antenna Cable
CA0021360:	60 m (200 ft) RG-6 Antenna Cable
CA0021375:	75 m (250 ft) RG-6 Antenna Cable
TF0006400:	RG-6 Crimp Tool
WC0004900:	300 m (1000 ft) Roll RG-11 Cable