USGlobalsat EB-5631RE User Manual
Page 5
2012/7/30
- 5 -
DC Electrical characteristics
Parameter
Symbol
Min.
Typ.
Max.
Conditions
Units
High Level Input Voltage
V
I H
0.7*VCC
3.6
V
Low Level Input Voltage
V
I L
-0.4
0.45
V
High Level Output Voltage
V
OH
0.75*Vgcc
Vgcc
V
Low Level Output Voltage
V
OL
0.4
V
High Level Output Current
I
OH
2
mA
Low Level Output Current
I
OL
2
mA
Vgcc is SiRF Star IV Chip power input, 1.8V Vin.
Receiver Performance
Sensitivity
Tracking :
Autonomous acquisition :
-163dBm
-160 dBm
Time-To-First-Fix
1
Cold Start
– Autonomous
< 35s
<15s (with CGEE)
Warm Start
– Autonomous
2
< 35s
< 15s(with CGEE)
Hot Start
– Autonomous
3
< 1s
Horizontal Position Accuracy
4
Autonomous
< 2.5m
Velocity Accuracy
5
Speed
Heading
< 0.01 m/s
< 0.01 degrees
Reacquisition 0.1 second, average
Update Rate
1 Hz
Maximum Altitude < 18,000 meter
Maximum Velocity < 515 meter/ second
Maximum Acceleration < 4G
<Note>
1. 50% -130dBm Fu 0.5ppm Tu ±2s Pu 30Km
2. Commanded Warm START
3. Commanded Hot START
4. 50% 24hr static, -130dBm
5. 50% @ 30m/s