XW-4
（
CAS-10
）
Amateur Radio Satellite User's Manual
25
/
31
V2.0 by BA1DU
龚万骢
Sending
order
Starting
position
Data
length
Telemetry data function description
Telemetry data parsing algorithm
b4:
OBDH B on A off power distribution switch status (0 off/1 on)
b3:
OBDH A on B off power distribution switch status (0 off/1 on)
b2:
VHF antenna deployed state (0 not deployed/1 deployed)
b1:
UHF antenna expanded state (0 not expanded/1 expanded)
b0:
the status of the total antenna deployment switch (0 off/1 on)
7
F0W8~F0W11
4Byte
Satellite time seconds
W1 second highest byte
The four bytes are the accumulated
value of the whole second of UTC since
0:00:00:00 UTC on January 1, 2009 (0:00
after the jumped second).
W2 second high byte
W3 second low byte
W4 second lowest byte
8
F0 W12W13
2Byte
Satellite time milliseconds
W1W2 is an integer
F1 frame (frame count is 4n+1)
Sending
order
Starting
position
Data
length
Telemetry data function description
Telemetry data parsing algorithm
1
F1W2W3
2Byte
VU 5V power supply voltage
W1 is the integer part, W2 is the decimal part (2 decimal places)
Range: 0
～
10.00(V)
2
F1W4W5
2Byte
VU 3.8V power supply voltage
W1 is the integer part, W2 is the decimal part (2 decimal places)
Range: 0
～
5.00(V)
3
F1W6W7
2Byte
IHU 3.3V voltage 1
W1 is the integer part, W2 is the decimal part (2 decimal places)
Range: 0V
～
5.00(V)
