Quatech QSC-100 user manual RS-232 Port Signal

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.

RS-232	Port 1		Port 2		Port 3		Port 4
Signal	D-37	D-25	D-37	D-25	D-37	D-25	D-37	D-25
TxD	24	2	10	2	33	2	19	2
RxD	5	3	28	3	14	3	37	3
RTS	23	4	9	4	32	4	18	4
CTS	4	5	27	5	13	5	36	5
DTR	21	20	7	20	30	20	16	20
DSR	22	6	8	6	31	6	17	6
DCD	2	8	25	8	11	8	34	8
RI	20	22	6	22	29	22	15	22
GND	3	7	26	7	12	7	35	7

Figure 18 --- QSC-100 connector pinouts

1

20

2

21

3

22

4

23

5

24

6

25

7

13

25

12

24

11

23

10

22

9

21

8

20

7

8

9

26

27

19

6

18

5

10

11

28

29

17

4

16

3

12

13

30

31

15

2

14

1

32 14

33

15

34 16

35

17

36

18

D-25 connector (using adapter cable)

19

37

D-37 connector

(dashed lines delineate channels)

Figure 19 --- QSC-100 output connectors

Quatech QSC-100 User's Manual 25