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Description
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
Specifications:
| 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 |
| Redundancy | |
| 2° GPS module: | Yes (optional) |
| 2° Power supply module: | Yes (optional) |
| Commutation Function: | Automatic |
| Environmental | |
| Operating temperature range: | -5°C ÷ 40°C |
| Max. relative humidity: | 90%, non condensing |
| Max. operating altitude: | 2500 m. a.s.l. (>2500 m. optional) |
| Mechanical | |
| Chassis | 19” 1U Rack |
| Width: | 482 mm |
| Height: | 44 mm |
| Depth: | 300 mm without connector |
