R&S®GPS129 GPS Receiver

GPS receiver with reference frequency generator

Vue d'ensemble

Key Facts

The GPS Receiver R&S^®GPS129 has been designed to provide the user with extremely precise time and position data.

Brief Description

Features

GPS receiver and reference frequency generator combined in a single unit
High precision due to GPS-based operation

Specifications

Receiver	6 channel C/A code receiver with external antenna/converter unit
Antenna	antenna/converter unit with remote power supply

Key Facts

The GPS Receiver R&S^®GPS129 has been designed to provide the user with extremely precise time and position data. When it comes to direction finding and location of radio emitters, the exact position of the DF antenna must be known in order to calculate the target location from the bearings and location of two or more direction finders. The R&S^®GPS129 provides GPS-based position information via the serial interface.

In addition, the R&S^®GPS129 offers high-accuracy 2.048 MHz and 10 MHz frequency outputs to increase the frequency accuracy of receivers if the receiver is fitted with a frequency reference input.

Brief Description

The R&S^®GPS129 consists of a GPS receiver and a satellite-controlled clock together with a power supply unit, all installed in a metal 19" rackmount and ready to operate. It is available with AC or DC power supply. The interfaces and input/output signals provided by the R&S^®GPS129 are accessible via connectors on the rear panel.

The global positioning system (GPS) is a satellite-based radio positioning, navigation, and time transfer system. GPS is based on accurately measuring the propagation time of signals transmitted from satellites to the receiver.

The R&S^®GPS129 has been developed for applications where conventional radio-controlled clocks cannot meet the growing precision requirements. High precision available 24 hours a day around the world is the main feature of this unit which receives its information from the satellites of the global positioning system.

Features & Benefits

GPS receiver and reference frequency generator combined in a single unit
High precision due to GPS-based operation
Compact design: 19" rackmount with a height of just 1 unit for integration into system racks
Suitable for stationary, transportable and mobile applications
Available with AC or DC power supply
Remote-controlled operation for optimum integration into monitoring systems, especially Spectrum Monitoring and Management System R&S^®ARGUS-IT or Coverage Measurement System R&S^®ARGUS-FMTV.

Specifications

General
Receiver	6 channel C/A code receiver with external antenna/converter unit
Antenna	antenna/converter unit with remote power supply
Time to synchronization	≤ 2 minutes	with known receiver position and valid almanac
	≤ 12 minutes	cold boot
Pulse outputs	every second on the second (P_SEC, TTL level) every minute on the minute (P_MIN, TTL level)
Pulse accuracy	better than ±250 ns	after synchronization and 20 minutes of operation
	better than ±2 µs	during the first 20 minutes of operation
Frequency accuracy	±1×10^-10	with GPS-synchronous operation and 2 hours of operation
	±1×10^-12	with GPS-synchronous operation, averaged over 24 h
	±5×10^-10	1 day, free running
	±1×10^-7	1 year, free running
Short-term stability	<5×10^-12	Allen Variance (1s, 10s)
SSB phase noise	-100 dB/Hz	1 Hz beside carrier
	-130 dB/Hz	10 Hz beside carrier
	-145 dB/Hz	100 Hz beside carrier
	-155 dB/Hz	1 to 10 kHz beside carrier

interfaces
COM0	9-pin D-Sub connector, serial RS-232-C interface (default setting: 19200, 8N1)
COM1	9-pin D-Sub connector, serial RS-232-C interface (default setting: 9600, 8N1)
TIME CAPTURE/PULSE OUTPUT	9-pin D-Sub connector providing TTL inputs for storing time stamps and TTL outputs with pulses every second on the second or every minute on the minute
2.048 MHz	BNC jack, 2.048 MHz reference frequency, 3.0 V pp into 50 Ω
2.048 MHz SWITCHED	BNC jack, 2.048 MHz reference frequency, 3.0 V pp into 25 Ω, switched on when the specified accuracy has been reached
10 MHz	BNC jack, 10 MHz reference frequency, 3.0 V pp into 50 Ω
10 MHz SWITCHED	BNC jack, 10 MHz reference frequency, 3.0 V pp into 25 Ω, switched on when the specified accuracy has been reached
ANTENNA	N jack, RF input (GPS antenna/converter unit)
Power supply input	model 02: mains connector, 100 V to 240 V AC
	model 04: DC connector, 19 V to 35 V DC

General Data
EMC	meets EMC directive of EU (89/336/EEC) and German EMC law
Quality standard	developed and manufactured in compliance with ISO 9000
Power supply	model 02: 100 V to 240 V AC, 50 to 60 Hz, 20 VA
	model 04: 19 V to 35 V DC, 2 A max./20 W
Dimensions (W × H × D)	19" rackmount 1 HU - 483 mm x 44 mm x 345 mm
Weight	3 kg