Electronics Ltd


         Certificate No.0329

Single Board GPS

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Rapco 3543 Series -- OEM Single Board GPS Units

DESIGNED FOR OEM APPLICATIONS
STANDARD RS232 CONTROL INTERFACE
EASILY INTEGRATED INTO EQUIPMENT DESIGNS
CUSTOM VERSIONS AVAILABLE

This Eurocard size PCB has the full features of a GPS referenced Time and Frequency system built in. Its form makes it ideal for inclusion in other products as an OEM device. In this function the board can give frequency and/or time information with high precision and good stability. Custom versions of the card can be produced with variations in functionality, power arrangements and mounting details. Please contact us for details. An antenna and suitable length downlead should be ordered separately in order to complete a fully functional GPS subsystem.

Specification of typical product (Type 3543B)

FREQUENCY OUTPUTS

  

Reference Frequency

10 MHz Standard. Other fixed frequencies available as options.

Outputs available

Sinewave, on SMB

Amplitude, Sine outputs

+10dBm in 50 ohm. factory setting, (+7 to +13dB available)

FREQUENCY ACCURACY 7 days min. continuous power up and GPS. Averaging Period 24 hours min. Temperature Quasi-Constant, Range 26°C ± 10°C

Absolute Frequency Error, Long term Ref: USNO

±5E-11

Short Term Stability (Allan Variance 1 sec)

1E-11

REFERENCE stand alone performance (without GPS)

  

Long Term Stability (drift rate, ageing)

±3E-10/day

Frequency vs Temperature (20°C ± 20°C)

±3E- 9 p-p

Phase Noise dBc/Hz @ 1 KHz offset

-145 typ

TEMPERATURE RANGE

  

Operating

0 to +50°C RH 90% (non-condensing.)

Storage

-40 to +70°C RH 30%

TIMING OUTPUT

Square wave, +ve edge on-time 1Hz, derived from the internal drift-corrected oscillator and phase-locked to the average position of the GPS 1pps (UTC).

Number of Outputs

1 x TTL on 16 way DIN 41651 plug

Signal Level

TTL >+4V o/c,

Accuracy (uncalibrated)

Leading edge on-time to UTC to within ±1 microsecond or with site-specific set-up ±300nS

RS232 INTERFACE

Provides Control, Time/Date output and Status indications.

POWER SUPPLY

  

Voltage

+5V dc 400mA nom. -5V dc 15mA nom. +12V dc 150mA nom

Power loading

5VA typical up to 15VA on warm up.

Connector

dc -0.11 inch Spade Terminals

Dimensions (excl. connectors)

184 x 120 x 30 mm (LxWxH)


             

  

Rapco Electronics Limited     Registered in England  985985     VAT No. GB 199 463 310
10 Joule Road, Basingstoke, Hants, England. RG21 6XF

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