GW Instek SFG-830 User Manual - Manual (Page 46)

SFG-830 p.43
APPENDIX 2: RS-232 Wiring Configuration
SFG-830 is a DTE device with a 9-pin D-type male or 25-pin D-type female shell RS-
232 connector located on the rear panel. In standard usage, a male connector
appears on DTE devices, and a female connector appears on DCE devices. A
straight through female-to-male cable of less than 50 feet is typically used for local
DTE-to-DCE connection. When connecting the equipment to another RS-232
device consider the suggestions as follows:
z Many devices require a constant high signal on one or more input pins.
z Do not connect the output line of one DTE device to the output line of the other.
z Ensure that the signal ground of the equipment is connected to the signal ground
of the external device.
z Ensure that the chassis ground of the equipment is connected to the chassis
ground of the external device.
25-PIN D-SHELL
1. No Connection
2. Receive Data (R×D) (input)
3. Transmit Data(T×D) (output)
4. No Connection
5. No Connection
6. No Connection
7. Signal Ground (GND)
8. No Connection
9. No Connection
10. No Connection
11. No Connection
12. No Connection
13. No Connection
14. No Connection
15. No Connection
16. No Connection
17. No Connection
18. No Connection
19. No Connection
20. No Connection
21. No Connection
22. No Connection
23. No Connection
24. No Connection
25. No Connection
Figure 1: Pin Assignments of the RS-232 Connector(DB-25-D Female)