Appendix A: Interface Standards - Black Box RS-232 Manual De Instrucciones

HIGH-SPEED RS-232 TO X.21 CONVERTERS

Appendix A: Interface Standards

Transmit Clock-15—
Receive Clock-17—
Data Terminal Ready (DTR)-20—
External Transmit Clock-24—
Test Mode (TM)-25—
12
14—
16—
18—
19—
21—
22—
23—
Figure A-1. RS-232 Interface.
—1-(FG) Frame Ground
—2-(TD) Transmit Data
—3-(RD) Receive Data
—4-(RTS) Request to Send
—5-(CTS) Clear to Send
—6-(DSR) Data Set Ready
—7-(SG) Signal Ground
—8-(DCD) Data Carrier Detect
—9-(DCV) +DC Test Voltage