UB4B0 User Manua
l
20
5
Hardware Interface
This chapter is a brief introduction about UB4B0 receiver I/O port and Electrical
Characteristics
，
please connect correctly in case unnecessary damage
5.1
Power Input
Index
Description
Acceptable velocity Input range
3.3V +5%/-3%
Note: Please
avoid switching power supply frequently, it is recommended that
the switching interval is greater than 5s.
5.2
RF Input
Index
Description
RF Input
-85 dBm ~ -105 dBm
signal Input
BDS B1/B2/B3 + GPS L1/L2+GLONASS L1/L2+Galileo
E1/E5a/E5b
LNA power supply
+4.75 ~ +5.10 VDC, 0 ~ 100 mA
5.3
External clock Input
Index
Description
External clock Input
Frequency: 10 MHz
Voltage Peak: 1.2V~1.8V
Frequency Stability: max
±
0.5 ppm
Waveform
: Sine
