7
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)
