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OTGPS1 has been designed to bring the maximum level of flexibility and reliability to the end-user broadcaster, featuring 2 redundant and hot swappable power supply units, 2 redundant and high precision GPS / GLONASS receivers with batteries (up to 30 minutes of optimal functioning if power supply temporarily fails), and clever switch logic processing.

OTGPS1U brings fast GPS or GLONASS locking and very high precision and stability specifications, and allows broadcasters to save space and additional units by providing up to 18 independent output couplets (10 MHz and 1 PPS).

Main features:

  • Compact 1U 19” Rack chassis
  • Double redundant GPS / GLONASS receiver modules with fast signal acquisition, and back-up batteries
  • Extended hold over with proprietary algorithms
  • 18 separate 10 MHz outputs, and 18 separate 1 PPS outputs
  • Hot swappable and redundant power supply units (AC+AC, AC+DC, or DC+DC)
  • Web interface and SNMP management
  • Remote control and GPIO


Frequency Reference
Output signals: 10 MHz sine wave
Output level: +8 dBm, ±2 dB
Number of outputs: 18 independent
Output impedance: 50 Ohm
Output connectors: BNC
Noise figure 100 Hz: -140 dBc/Hz, typical
Noise figure 10 kHz: -150 dBc/Hz, typical
Stability: 1e-12 daily average with disciplined OCXO
Initialization time: < 4 minutes
Time Reference
Output signals: 1PPS, 5Vp.p. TTL, 100μs
Number of outputs: 18 independent
Output impedance: 50 Ohm
Output connectors: BNC (f)
PPS accuracy: < 50 nsec
Holdover stability: ± 5 μsec after 5 hours of GPS / GLONASS signal absence (optional 1 μs after 24 hours)
GPS / GLONASS Characteristics
Receiver: L1 1575,42 MHz (GPS) or L1 1602,00 MHz band (GLONASS)
Tracking: Correlation on 50 channels
Antenna connectors: N (f), 50 Ohm
First fix time: < 32 sec. with satellite signals> -130 dBm
2° GPS module: Yes (optional)
2° Power supply module: Yes (optional)
Commutation Function: Automatic
Operating temperature range: -5°C ÷ 40°C
Max. relative humidity: 90%, non condensing
Max. operating altitude: 2500 m. a.s.l. (>2500 m. optional)
Chassis 19” 1U Rack
Width: 482 mm
Height: 44 mm
Depth: 300 mm without connector