Quatech QSC-100 - Manual (Page 27)

The QSC-100 is a DTE device which connects to peripheral equipment through a
single female D-37 connector, or using the adapter cable, four male D-25 connectors.
The standard serial port connections are listed in Figure 17.
7 35 7 12 7 26 7 3 GND
22 15 22 29 22 6 22 20 RI
8 34 8 11 8 25 8 2 DCD
6 17 6 31 6 8 6 22 DSR
20 16 20 30 20 7 20 21 DTR
5 36 5 13 5 27 5 4 CTS
4 18 4 32 4 9 4 23 RTS
3 37 3 14 3 28 3 5 RxD
2 19 2 33 2 10 2 24 TxD
D-25 D-37 D-25 D-37 D-25 D-37 D-25 D-37
Port 4 Port 3 Port 2 Port 1
RS-232
Signal
Figure 18 --- QSC-100 connector pinouts
D-25 connector
(using adapter cable)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
10
11
12
13
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
D-37 connector
(dashed lines delineate channels)
Figure 19 --- QSC-100 output connectors
Quatech QSC-100 User's Manual 25