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GPS Disciplined Oscillators

Two GPS disciplined oscillator modules (GPS-DO) offered for “design in” applications delivering low phase noise 10 MHz outputs with 1PPS synchronisation capability.

The GPS Disciplined Oscillator Module is a small Commercial –Off-the-Shelf (COTS) GPSDO that has been designed to meet military requirements such as MIL-STD-188-164A.

At only 4.1” x 2.75” x 1” (104.0 x 70.0 x 26.0 mm) in size, the unit provides Stratum 1 performance.

The GPSDO supplies three isolated, low noise precision 10 MHz frequency reference signal outputs.

These outputs are accurate to 1x10-12 when slaved to a timing supply from an internal GPS tracking receiver.

The frequency standard is also able to slave to an external 1PPS signal to steer and hold the internal oscillator and clock system precisely in time. Time and frequency information is maintained to a very high accuracy during by the disciplined internal oscillator even when no satellites can be tracked.

A serial data port is provided to report time, date, position, and GPS satellite health and signal strength. The GPSDO module also has dual power supply inputs and can operate off either supply input.

Optional capabilities include automatic interface to an external military GPS receiver such as the Defence Advanced GPS Receiver (DAGR), Ethernet Interface for NTP time service and SNMP status monitoring. Standard frequency output is 10 MHZ, but other frequencies are also possible.

Typical Applications

The GPS-DO is designed for product level integration into timing system components requiring a precision 10MHz reference source.

GPS-DO : GPS Disciplined Oscillator Module

GPS-DO datasheet

gpsdo_ds24.pdf

Features

•  3 Isolated Low Phase Noise 10MHz Outputs

•  Internal GPS Tracking Receiver

•  External 1PPS Input

•  Small Footprint Designed for easy Integration

•  Disciplined High Stability OCXO


Outputs


•  3 Isolated Low Phase Noise 10MHz Outputs

•  Serial Time Of Day Message TOD

•  1 PPSDifferential DCLS or pulse @ RS422 levels

GPS Discilplined OCXO

The miniature GPS Disciplined Oscillator combines the power of our existing disciplined oscillators in a footprint the size of an OCXO.

Designed with interoperability in mind, the Miniature GPS Disciplined Oscillator meets military requirements such as MIL-STD-188-164A. The GPSDO supplies a low noise, precision 10 MHz frequency reference signal output. This output is accurate to 1x10-12 when slaved to a GPS source.

The frequency standard is also able to slave to an external 1PPS signal to steer and hold the internal oscillator and clock system precisely in time. Time and frequency information is maintained to a very high accuracy during by the disciplined internal oscillator even when no satellites can be tracked.

A serial data port is provided to report time, date, position, and GPS satellite health and signal strength.

Optional capabilities include automatic interface to an external military GPS receiver such as the Defence Advanced GPS Receiver (DAGR), Standard frequency output is 10 MHZ, but other frequencies are possible.

MGPS-DO : Miniature GPS Disciplined Oscillator Module

Miniature GPS OCXO module

Typical Applications

The MGPS-DO is designed for PCB level integration into timing system components requiring a precision 10MHz reference source.

Features

•  Low Phase Noise 10MHz Output

•  Internal GPS Tracking Receiver

•  External 1PPS Input

•  Very small footprint designed for component level easy integration

•  Disciplined High Stability OCXO


Outputs


•  Low Phase Noise 10MHz Outputs

•  Serial Time Of Day Message TOD

•  1PPS

MGPS-DO datasheet

gpsdo_mini_ds25.pdf