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GPS-3903
GPS Receiver and Antenna Systems
The NEO® GPS-3903 and standalone GPS receiver/antenna allow the CSD-3902 master clock driver, the VSG-410 signal generator and 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 that 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 NEO CSD-3902 clock system driver and MTG-3901 master timing generator modules
- Separate antenna and receiver for mounting flexibility
- Used to remotely locking multiple reference systems
Images/Diagrams
Block Diagram
Specifications
Specifications and designs are subject to change without notice.
| GPS RECEIVER | |
| Environmental | |
| Operating Temperature | -40° to 185° F (-40° to 85° C) |
| Storage Temperature | -67° to 212° F (-55° to 100° C) |
| Vibration | 0.008 g2/Hz, 5 to 20 Hz
0.05 g2/Hz, 20 to 100 Hz 3 bD/octave, 100 to 900 Hz |
| Operating Humidity | 5% to 95% R.H., non-condensing, @ 140° F (60° C) |
| Altitude | -1,312 to 59,005 ft (-400 to 18,000 m) |
| Technical | |
| Prime Power | 9 to 32 VDC input |
| Power Consumption (nominal) | 25 mA, 30 mW, at 12 V, 77° F (25° C), with antenna |
| Back-up Power | 3 to 12 VDC (20 µa @ 3.3 V, 77° F (25° C)) |
| Serial Ports | 2 RS-232 |
| I/O Protocol Options | Trimble standard interface protocol (TSIP) @ 9600 baud, 8-Odd-1
Trimble ASCII interface protocol (TAIP)) @ 4800 baud, 8-None-1 NMEA 0183 v3.0 @ 4800 baud, 8-None-1 RTCM SC-104 @ 4800 baud, 8-None-1 |
| NMEA Messages | Standard: GGA and VTG
Optional: User-selectable combination of; GGA, GLL, VTG, ZDA, GSV, GSA and RMC; user can store configuration in non-volatile memory |
| Performance | |
| General | L1 frequency, C/A code (SPS), 12-channel continuous tracking receiver |
| Update Rate | 1 Hz (TSIP, NMEA, or TAIP) |
| Accuracy | Position - Horizontal: <5 m (50%), <8 m (90%)
Position - Altitude: <10 m (50%), <16 m (90%) Velocity: 0.06 m/sec |
| 1 PPS (static) | ±50 ns |
| DGPD Accuracy | Position: 2 m CEP (50%)
Velocity: 0.05 m/sec (1 sigma) Time: ±500 ns (nominal) |
| Acquistion Cold Start | <50 sec (50%) <84 sec 90% |
| Warm Start | <38 sec (50%) <42 sec 90% |
| Hot Start | <10 sec (50%) <13 sec 90%
|
| Cold start requires no initialization. Warm start implies last position, time and almanac are saved by back-up power. Hot start implies ephemeris also saved.
| |
| Re-acquistion after signal loss | <2 sec (90%) |
| Dynamics: | |
| Acceleration | 4g (39.2 m/sec2) |
| Motional Jerk | 20 m/sec2 |
| Operational Limits | Altitude <59,005 ft (18,000 m) or velocity <515 m/sec
Either limit may be executed but not both |
| Physical Characteristics | |
| Dimensions | |
| Metal Enclosure (D x W x H) | 4.03 x 4.97 x 1.1 in. (102 x 127 x 28 mm) |
| Mounting Flange (D x W x H) | 4.03 x 6.81 x 1.1 in. (102 x 173 x 2 mm) |
| Weight | 0.57 lbs (0.26 kg) (board + enclosure + flange) |
| Connectors | |
| Antenna | MCX |
| Serial Data | 2 DB-9 |
| Power | 3-pin Conxall |
| 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 ft (1 m) |
| Physical Characteristics | |
| Dimensions (DxH) | 3.05 x 2.61 in. (77.5 x 66.2 mm) |
| Weight | 6.0 oz (170 g) |
| Enclosure | Off-white plastic |
| Connector | F-type or TNC |
| Mounting | 1 in. -14 thread or 3/4 in. pipe thread |
| Technical Performance | |
| Prime Power | 5 VDC (±10%) |
| Power Consumption | 30 mA maximum |
| Output Impedance | 50 ohms |
| Frequency | 1575.42 MHz ±1.023 MHz |
| Polarization | Right-hand circular polarization (RHCP) |
| VSWR | 2, maximum |
| Axial Ratio | 90°: 4.0 dB, maximum; 10°: 6 dB maximum |
| Gain | 35 dB ±3 dB |
| Noise | 3.3 dB, maximum (77° F (25°) ±41° F (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-3903 | GPS receiver and antenna, 110 to 240 VAC operation, includes GPS receiver, antenna, AC power supply, RG-59 antenna cable 75 ft (23 m) and RS-232 adapter cables for MTG-3901, CSD-3902 |
OPTIONS | |
| GPS-3902-RM | Rackmount kit, holds up to 2 GPS-3902, GPS-3903 receivers |
| CAB-CSD-GPS3901 | Replacement GPS3902 or GPS-3903 adapter cable for CSD-3901/2 (included with GPS-3902/3) |
| CAB-CSD-GPS39Y2 | "Y" Adapter cable for connection of 2 CSD-3902/1 to 1 GPS-3902 or GPS-3903 |
| PWRSUPPLY-KIT | Standalone 100 to 240 VAC replacement DC power adaptor for GPS-3903, GPS-3902, GPS-3901 (included with GPS-3901/2/3) |
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
