Highly accurate frequency source – disciplined by GPS/GLONASS

The GPSDXO frequency standard provides a highly accurate clock and frequency source by synchronising to the GPS/GLONASS satellite navigation system. Ideal for improving the frequency stability and accuracy of the Analog Devices ADALM Pluto or HackRF. It can also control any transceiver with a 10MHz reference input, such as the ICOM IC-9700 or Kenwood TS-890.

Drop-in replacement for the Pluto oscillator

The XO output level is matched to the front-end chip of the ADALM SDRs (approx. 1.5Vpp), so it can directly replace the internal 40MHz crystal oscillator.

Outputs (model G40H)

+ 40MHz oscillator output (approx. 1.5Vpp, 3.3ns fall/rise time)
+ 10MHz sine output (approx. 1dBm to 2dBm)
+ 1PPS pulse per second (3.3V TTL)

Low power – ideal for portable and 24/7 operation

Only approx. 0.35W with antenna. Powered via USB-C from any USB charger, PC/laptop or power bank.

Updatable via USB

Firmware updates via USB; the current deviation in ppb is output every second over a virtual COM port. See GPSDXO support.

Specifications

Accuracy: 10^-9 (1ppb), typically after 1 minute, at the latest after 3 minutes
Power consumption: approx. 70mA / 0.35W with antenna, 50mA / 0.25W without antenna
LED display: 4 levels, decade steps from 10^-6 to 10^-9
Connectors: SMB (GPS antenna), BNC (1PPS), BNC (10MHz), SMB (XO output)
GPS/GLONASS receiver: ATGM336H (u-blox MAX-M8 compatible), 33 tracking / 99 acquisition channels, -165dBm
5V phantom power for any GPS antenna (max. 100mA)
Ambient temperature: -20°C to +70°C
Size: 88 x 38 x 103mm, weight: 200g
Housing: coated extruded aluminium profile

Scope of delivery

GPSDXO module, GPS antenna with 3m cable, USB-C cable 1m, manual. No power supply included.