Cable pin-out signals, Appendix d: working with coaxial cable – Microtest TSB-67 - 568A Annex E User Manual
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Page 59
Serial Cable DB-25 Female to DB-25 Male Pin-outs
Cable Pin-Out Signals
The signals for the cable pin-outs are as follows:
Appendix D: Working with Coaxial Cable
Coaxial cable is a common type of cable used for network data transmission. In coaxial cable, an
insulated wire runs through the middle of the cable and a second wire, called the shield, surrounds
the insulation of the inner wire like a sheath. The outer insulation jacket wraps around the second
wire.
B-9 Female
DB-9 Male
2___________2
3___________3
4___________20
5___________5
6___________6
7___________7
8___________8
20__________4
22__________22
DB-9
DB-25
DB-25
DB-9
Male
Male
Female
Female
Pin
Pin
Signal
Pin
Pin
Signal Description
5
7
GND
7
5 Protective
Ground
3
2
TXD
2
3
Transmitted Date
2
3
RXD
3
2
Received Data
7
4
RTS
4
7
Request to Send
8
5
CTS
5
8
Clear to Send
4
20
DTR
20
4
Data Term Ready
6
6
DSR
6
6
Data Set Ready
1
8
RLSD
8
1
Received Line Signal
Detector
9
22
RI
22
9
Ring Indicator