Pin mapping from modem(26pin) to 25 pin Sub-D:

sourcedstsignal
1,2,3 → 4,16EXT_PWR
4,5,6 → 3,17EXT_GND
7 → 1ON/OFF
10,13,20,23 → 14,23,25SIG_GND
11 → 9S_TX (Serial Data into SBD)
12 → 13S_RX (Serial Data out)
14 → 10DCD
15 → 21DSR
16 → 22CTS
17 → 7RI
18 → 8RTS
19 → 19DTR
24 → 24network_available
8,9,21,22,25,26 n.c.
  • iridium/sbd.txt
  • Last modified: 2021/04/18 12:35
  • (external edit)