GPS Satellite-Controlled Clock. Arbiter Systems Model 1093A/B/C.

Model 1093A/B/C
GPS Satellite-Controlled Clock
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 1093A/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 (1093opt92): bus driver, 4 Vpp, 20 ohms source impedance; drives a 50-ohm load at 3 Vpp; pluggable terminal strip

Second RS-232 Port (1093opt19): 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 (1093opt93): 1 set, Form C (SPDT) fail-safe, 0.3 A at 130 Vdc; Locked function.

Interface:

Operator:

Display:

Status LEDs (Models 1093A/B/C)
2 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)

Keypad: 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 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 (1093opt94)
Second RS-232 port available (1093opt19)

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

Power Requirements:

Standard:: Voltage: 85 to 264 Vac, 47 to 440 Hz, 20 VA maximum or 110 to 275 Vdc, 15 W maximum.
Inlet: IEC-320 with fuse and mating cordset. Specify option P01 - P10.

General:

Physical:: Size: 1 RU rack mount or tabletop, 260 mm deep FMS, Rack mounts included
Weight: 2 kg (4.5 lbs), net; 8 kg (17 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)
Non-operating Temperature: -40° to +75° C
Humidity: Non-condensing
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.