RoyalTek Confidential
5
RET-3570LP User Manual
1.5 Technical Specification
Impedance
：
50
Ω
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
Δ
f=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:
mV
V
RF
1
=
;
R
L
=
;
KHz
f
5
.
22
=
∆
;
KHz
f
1
mod
=
; No
pre-emphasis;
us
TC
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
