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RGM-3550LP User Manual
4. RGM-3550LP Technique Specification
No Function Specification
GPS receiver
1 Chipset SiRF GSC3F/LP single chipset
2 Frequency L1 1575.42MHz.
3 Code C.A. Code.
4 Channels 20.
5 Chipset Sensitivity
-159dBm (tracking)
6 Cold start 35 sec@ open sky
7 Warm start 35 sec@ open sky
8 Hot start 1 sec @ open sky
9 Reacquisition 0.1sec typical
9 Position accuracy 10meters at 2D RMS.
10 Maximum altitude 18000 m
11 Maximum velocity 514 m/s
12 Trickle power mode
Duty cycle ≦ 34%. (Variable)
13 Update rate Continuous operation: 1Hz
14 Testability It shall be able to be tested by SiRF test mode IV and
single channel simulator.
15 Protocol setup It shall store the protocol setup in the SRAM memory.
Interface
16 I/O Pin 6 pin (see page 7 about pin definition)
Mechanical requirements
17 Dimension 35±0.3(L)x 31±0.3(W)x 8.55±0.5(H) mm
18 Weight
≦16.5g
Power consumption
19 Vcc DC 3.3 ±5%
20 Current Acquisition: 50mA (typical) Tracking: 45mA (typical)
21 Trickle power mode Average current 37mA. (300ms on /700ms off)
22 SRAM backup battery 3.3mAhr Li-Ion rechargeable battery. Battery life at full
charge is ≥ 7 days.
Environment
23 Operating temperature
-40 ~ +85℃
(except for SRAM battery backup -20
to +60 degree Celsius)
