RoyalTek rgm-3550lp Benutzerhandbuch

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7
RGM-3550LP User Manual 
4.  RGM-3550LP Technique Specification 
 
No Function 
Specification 
GPS receiver 
Chipset 
SiRF GSC3F/LP single chipset 
2 Frequency 
L1 
1575.42MHz. 
3 Code 
C.A. 
Code. 
4 Channels 
20. 
5 Chipset 
Sensitivity 
 
-159dBm (tracking)
 
Cold start 
35 sec@ open sky 
Warm start 
35 sec@ open sky 
Hot start 
1 sec @ open sky 
9 Reacquisition 
0.1sec 
typical 
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)