Customers: we're here for you
GPS-3904
GPS Receiver and Antenna Systems
The GPS-3904 and standalone GPS receiver/antenna allow the CSD-3901/CSD-3902 Master Clock Driver , the VSG-410 signal generator and the MTG-3901 Master Timing Generator to provide outputs with great accuracy by using the most accurate source of time used in the public domain. A system of 24 satellites provides complete coverage in any part of the world with information on time and position. This makes the CSD-3901/2 and MTG-3901 totally independent from telephone or radio receiver standards.
Features
- Compatible with VSG-410 and the NEO® CSD-3902 clock system driver and MTG-3901 master timing generator modules
- Separate antenna and receiver for mounting flexibility
- Used to remotely lock multiple reference systems
- Continuous connection and update
- Hardware features
- A single, printed circuit board containing
- A quality ovenized oscillator
- A 12-channel GPS receiver
- Control circuitry
- Easy calibration for different cable lengths
- Output
- 10 MHz reference signal output via BNC connector
- One PPS output with an over-determined solution synchronized to GPS
- UTC time
Images/Diagrams
Block Diagram
Specifications
Specifications and designs are subject to change without notice.
| GPS RECEIVER | |
| Environmental | |
| Operating Temperature | 32° to 140° F (0° to +60° C) |
| Storage Temperature | -40° to 185° F (-40° to +85° C) |
| Operating Humidity | 95% non-condensing |
| Altitude | 11.2 miles (18 km) maximum |
| Technical | |
| Prime Power | 24 VDC |
| Power Consumption (nominal) | 15 (cold) to 10 W (steady state) |
| Serial Ports | RS-232 |
| I/O Protocol Options | Trimble standard interface protocol (TSIP) @ 9600 baud, 8-Odd-1 |
| Performance | |
| General | L1 frequency, C/A code (SPS), 12-channel continuous tracking receiver |
| Update Rate | 1 Hz |
| 1 PPS (static) | 15 ns (one sigma) |
| 10 MHz | 1.16 x 10-12 (one day average) |
| Harmonic Level | -40 dBc maximum |
| Spurious | -70 dBc maximum |
| Phase Noise | 10 Hz, -120 dBc/Hz
100 Hz, -135 dBc/Hz 1 kHz, -135 dBc/Hz 10 kHz, -145 dBc/Hz 100 kHz, -145 dBc/Hz |
| Operational Limits | Altitude <11.2 miles (18 km) |
| Physical Characteristics | |
| Dimensions: | |
| Metal Enclosure (H x W x D) | 2 x 4 x 5 in. (40 x 102 x 127 mm) |
| Mounting Flange | 6 mounting holes for M3 screws. Maximum depth 12 mm |
| Weight | 0.628 lbs (0.285 kg) |
| Connectors: | |
| Antenna | BNC |
| 10 MHz Output | BNC |
| PPS Output | BNC |
| Serial Data | 9 pin D-sub |
| Power | 2-pin locking push pin type adapter (Molex) |
| GPS ANTENNA | |
| Environmental | |
| Operating Temperature | -40° to 185° F (–40° to 85° C) |
| Storage Temperature | -40° to 212° F (–40° to 100° C ) |
| Vibration | 10 to 200 Hz log sweep
3 g (Sweep time 30 minutes) 3 axes |
| Shock | 50 g vertical, 30 g all axes |
| Humidity | Mil-STD-810E |
| Corrosion | 5% salt spray |
| Waterproof | Immersion to 3.3 ft (1 m) |
| Physical Characteristics | |
| Dimensions (DxH) | 3.05 x 2.61 in. (77.5 x 66.2 mm) |
| Weight | 6 oz (170 g) |
| Enclosure | Off-white plastic |
| Connector | TNC |
| Mounting | 1 in.-14 thread or ¾ in. pipe thread |
| Technical Performance | |
| Prime Power | 5 VDC (±10%) |
| Power Consumption | 30 mA max. |
| Output Impedance | 50 ohms |
| Frequency | 1575.42 MHz ±1.023 MHz |
| Polarization | Right-hand circular polarization (RHCP) |
| VSWR | 2.0 maximum |
| Axial Ratio | 90°: 4.0 dB maximum; 10°: 6 dB maximum |
| Gain | 35 dB ±3 dB |
| Noise | 3.3 dB maximum (25° ±5° C) |
| Pass-Band Width | 50 MHz |
| Out of Band Rejection | fo=1575.42 MHz
fo ±20 MHz: 7 dB minimum fo ±30 MHz: 12 dB minimum fo ±50 MHz: 20 dB minimum fo ±100 MHz: 30 dB minimum |
| Azimuth Coverage | 360° (omni-directional) |
| Elevation Coverage | 0° to 90° elevation (hemispherical) |
Ordering Information
| GPS-3904 | GPS receiver and antenna, 110 to 240 VAC operation, includes GPS receiver, antenna, AC power supply, 75 ft (23 m) RG-59 antenna cable |
| Options | |
| CAB-CSD-GPS3901 | Adapter cable for RS-232 interface for CSD-3902 (VSG-410) |
| CAB-CSD-GPS39Y2 | Y Adapter cable for connection of 2 CSD-3902 (VSG-410) to 1 GPS-3904 |
Sales Contacts
- North America +1 800 231 9673
- Caribbean and Latin America +1 786 437 1960
- Europe and Africa +44 118 964 8200
- Middle East and South Asia +971 4 433 8250
- Asia, Pacific Rim +852 2776 0628
