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RoyalTek Confidential
5
RET-3570LP User Manual
1.5 Technical Specification
Impedance：50Ω
No Function Specification
GPS receiver
1 Chipset SiRF Star III, GSC3f/LP
(Digital, RF in a single package)
2 Frequency L1 1575.42MHz.
3 Code C.A. Code.
4 Channels 20 parallel
5 Chipset Sensitivity -159dBm.
6 Chipset Cold start @open sky 35 sec
7 Chipset Warm start @open
sky
35 sec
8 Chipset Hot start @open sky 1 sec
9 Reacquisition 0.1sec typical
10 Position accuracy 10meters at 2D RMS.
11 Maximum altitude 18000 m
12 Maximum velocity 514 m/s
13 Trickle power mode
Duty cycle
≦ 34%. (Variable)
14 Update rate Continuous operation: 1Hz
15 Testability It shall be able to be tested by SiRF test IV and single channel
simulator.
16 Protocol setup It shall store the protocol setup in the SRAM memory.
17 DGPS WAAS, EGNOS
Interface
18 LNA No LNA
19 I/O Pin 31pin
TMC/RDS receiver
20 Frequency 87.5~108MHz. US/Europe
21 RDS sensitivity
24.7uV typical
Δf=22.5kHz, fAF = 1kHz,L=R, f RDS=1.2kHz,
De-emphasis= 50us,
Block Quality Rate
≧85%
22 Right and Left audio output
voltage
Conditions:
mVV
RF
1
=
;
R
L
=
; KHzf 5.22
=
∆
; KHzf 1
mod
= ; No
pre-emphasis; usTC
deem
75
=
Output voltage:
Min= 55 mV
Typ=66 mV
Max=75mV
Mechanical requirements
23 Weight
≦3.5g
Power consumption
24 Vcc DC 3.3 ±5%
25
Current
GPS:
Fix mode Current 36mA average.
RDS Current: 15mA typical
Environment