R3131 Spectrum Analyzer Operation Manual
4.2 RS-232 Remote Control Function
4-48 Aug 28/98
Figure 4-6 Cable Wiring Diagram
Pin No.(9pin) Signal name Contents
1 DCD:Data Carrier Detector Receive carrier detection
2 RxD: Receive Data Receive data
3 TxD: Transmit Data Transmission data
4 DTR: Data Terminal Ready Data terminal ready
5 GND: Ground Signal ground
6 DSR: Data set Ready Data set ready
7 RTS: Request To Send Request signal for sending
8 CTS: Clear to Send Clear signal for sending
9CI: N.C
Controller
side
Spectrum
Analyzer
side
9pin 9pin
2 RxD 3 TxD
3 TxD 2 RxD
5 GND 5 GND
4 DTR
6 DSR
1 DCD
7 RTS
8 CTS
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