Model 1083B GPS Satellite-Controlled Frequency Standard

Model 1083B GPS Satellite-Controlled Frequency Standard

Model 1083B Frequency Standard/Comparator delivers performance comparable to atomic frequency standards, but at a fraction of the price.


Model 1083B User Manual
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Model 1083B Data Sheet
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GPS Antenna Data Sheet
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Get atomic frequency references at a fraction of the cost, using Model 1083B GPS Satellite-Controlled Frequency Standard/Comparator.

Suitable for use as the frequency reference for counters and signal generators, or for multiplication to microwave frequencies, Model 1083B features standard sine wave outputs of 1 Mhz, 5 Mhz and 10 Mhz with outstanding spectral purity and long-term stability.

The base price includes three sine wave (any combination of 1 MHz, 5 MHz, or 10 MHz) and one 1 PPS square wave. Optionally, up to five additional sine wave outputs are available in any combination of 1 MHz, 5 MHz, and 10 MHz.

A frequency measurement option allows the 1083B to measure the deviation and Allan Variance of a 1 MHz, 5 MHz, or 10 MHz signal and the deviation of a 1 PPS signal. As with all Arbiter GPS based clocks, the 1083B includes a GPS Data Backup Battery improving acquisition time and supplying constant power to the real-time clock and RAM in the GPS receiver module.

  • Atomic frequency performance at low cost
  • Produces traceable standard frequencies at 1 MHz, 5 MHz and 10 MHz
  • 1 PPS output provided for time standard applications
  • Supports up to eight outputs

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

± 150 ns peak


< ± 40 ns rms, over 24 hours

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.


  • 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 included in the Model 1083B. This feature improves acquisition time by supplying constant power to the real-time clock and RAM in the GPS receiver module.



Wenzel Streamline 10 MHz, third-overtone SC-cut ovenized


1 day: 1.0x10-9; Over Temperature: 1.5x10-8


Six Hours

Allan Variance

After warmup; locked to GPS, including the effects of SA.

1 second: 5.0x10-11

1 day: 5x10-13

I/O Configuration

Output Connectors

Four 50-ohm BNC

  • Three sine wave
  • One 1 PPS

Output Signals

Sine wave: 1 MHz, 5 MHz, and 10 MHz, + 11 dbm (2.5 Vpp) nominal into 50 ohms

1 PPS: 5 V CMOS; 10 ohms source impedance; drive capability ± 75 mA

Input Connectors

One 50-ohm BNC or High Impedance

Input Signals

Sine wave: 1 MHz, 5 MHz, and 10 MHz





2 character x 20 character vacuum fluorescent

  • Time: UTC or local
  • Position: latitude, longitude, altitude
  • Receiver and clock status
  • 1 PPS (input) deviation
Status LEDs
  • Operate (green)
  • Stabilized (green)
  • Unlocked (red)
  • Fault (red)
  • Local time offset
  • Daylight Saving Time: On/Off/Automatic
  • Out-of-Lock time: 1 minute to 99 minutes, Off, or Zero Delay
  • Cable delay
  • Clock offset
  • Frequency/Time Measurement: 1 MHz, 5 MHz, 10 MHz, 1 PPS, Deviation/Allan Variance, Interval, Data Points, Termination
  • Auto-Survey: On/Off, Survey duration
  • Position Hold: Off/3D/Altitude
  • Serial port: RS-232
Input LED
  • 50 ohm (green)
  • 1 PPS (green)
  • 1 MHz (green)
  • 5 MHz (green)
  • 10 MHz indicated by illumination of the 1 MHz and 5 MHz LEDs



1200 baud to 19,200 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity

Broadcast modes
  • Extended ASCII
  • ASCII with Time Quality
  • ASCII with Time Quality and Year
  • Vorne large-display time
  • Measurement Deviation

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

Power Requirements



85 Vac to 264 Vac, 47 Hz to 440 Hz, 20 VA maximum or 110 Vdc to 370 Vdc, 15 W maximum


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




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


2 kg (4.5 lbs), net
5.5 kg (12 lbs), shipping


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



Operating: 0 °C to + 50 °C (- 20 °C to + 70 °C typical)
Nonoperating: - 40 °C to + 75 °C




Radiated susceptibility: passes walkie-talkie test.

Conducted emissions: power supply complies with FCC 20780, Class A and VDE 0871/6.78 Class A

Certificates and Approvals

CE mark/label and certificate

Options may be ordered in any combination except where noted otherwise. The available options are listed below and described in the Options and AccessoriesOptions and Accessories section.

1083Bopt09 Frequency/Time Interval Measurement
1083Boptxy 1 MHz Sine Wave, BNC
1083Boptxy 5 MHz Sine Wave, BNC
1083Boptxy 10 MHz Sine Wave, BNC
AS0028200 19 Inch Rack Mount Kit
AS0059000 Operation Manual (1083B)
AS0087800 Arbiter GPS Active Timing Antenna
CA0021315 1 15 m (50 ft) RG-6 Antenna Cable
P01 - P10 Country specific power cord with straight female end
AP0003400 2 BNC (Male) Breakout to 100 mm Wires
AP0008900 2 BNC (Female) Breakout to 100 mm Wires
AP0013400 GPS Antenna Cable Splitter, F-Type, 950-2150 MHz, One Port Pass DC
AP0014900 2 BNC (Female) Breakout to Screw Terminal
AP0015000 2 BNC (Male) Breakout to Screw Terminal
AS0033100 Rack Slide Kit
AS0044600 Antenna Mounting Kit
AS0044700 3 21 dB In-Line Pre-amplifier
AS0048900 Antenna Grounding Block Kit
AS0056600 24 Inch Rack Mount Kit
AS0094500 GNSS Surge Protector
CA0019806 RS-232 Null Modem Cable, DB9F-DB9F, 2 m (6 ft) length
CA0021302 1 2 m (6 ft) RG-6 Antenna Cable
CA0021306 1 6 m (20 ft) RG-6 Antenna Cable
CA0021330 1 30 m (100 ft) RG-6 Antenna Cable
CA0021345 1 45 m (150 ft) RG-6 Antenna Cable
CA0021360 1 60 m (200 ft) RG-6 Antenna Cable
CA0021375 1 75 m (250 ft) RG-6 Antenna Cable
CN0027700 Type F, Male, RG-6 Antenna Cable Crimp-on Connector
CN0027800 Type F, Male, RG-11 Antenna Cable Crimp-on Connector
CN0031400 Type F, Male, RG-6 Plenum Rated Antenna Cable Crimp-on Connector
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
WC0004900 1 300 m (1000 ft) Roll RG-11 Cable
WC0005000 1 300 m (1000 ft) Roll RG-6 Cable
WC0005200 1 300 m (1000 ft) Roll RG-6 Plenum Rated Cable

1 Stocked length. Custom lengths available from 0.3 m (1 ft) to 300 m (1000 ft). Contact factory.
2 Converts pair of wires to BNC.
3 Used for cable lengths greater than: RG-6 75 m (250 ft) ; RG-11 120 m (400 ft)

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)
1083B_Firmware_10Apr2007 Requires an EPROM update from Arbiter.
1083B_Measurement_Board_Firmware_12Dec2006 Requires an EPROM update from Arbiter.


Firmware Version and Related Information

EPROM Update (1083B_Firmware)

VersionRev LevelVersion Notes
  1. Replaced latitude, longitude and altitude receiver functions with php() position function

EPROM Update (1083B_Measurement_Board_Firmware)

VersionRev LevelVersion Notes
  1. Changed status flags to allow update of 1pps and freq offset results.

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) »

Chassis Dimensions
Download chassis.pdf (27 kB) »

GPS Surge Protector Installation Instructions
Download pd0045800_surge_protector_installation_instructions.pdf (80 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 (216 kB) »

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