Interface Setup


The RS232C connector on the PMX is a D-Sub 9 pin connector.
When the PMX is shipped from the factory, a cover is attached to the RS232C connector. Keep this cover so that you can put it back on whenever needed. For safety, always attach the cover to the RS232C connector when the connector is not being used. If the cover is damaged or lost, contact your Kikusui agent or distributor.

RS232C connection

Before connecting the PMX to your PC, check that both are turned off.

Use a D-sub 9-pin female-to-female AT type cross RS232C cable.

The PMX does not use hardware handshaking (See Example 2 below).

The following figure shows the connector pinout that you see when you are facing the rear panel.




DB9 Connector (PMX side)   DB9 Connector (PC side)
Pin no. Signal name Pin no. Signal name
2 RXD (receive data) 2 RXD (receive data)
3 TXD (transmit data) 3 TXD (transmit data)
5 GND (signal ground) 5 GND (signal ground)
Housing Shield Housing Shield

RS232C configuration

1.   Select RS232C in the CONFIG settings (CF20: 232).

2.    Restart the PMX.


The following table shows the settings that correspond to the RS232C protocol.


Item Setting


Fixed to 19 200 bps (19.2)
Data Fixed to 8 bits
Stop Fixed to 1 bit
Parity Fixed to none
Flow (X-flow control) Fixed to none

RS232C communication

The flow control of the PMX is fixed to none. If you send the commands consecutively at a high speed, the PMX reception buffer may overflow. Do not send the commands consecutively. Send query commands and read the responses at a certain interval, or reduce frequency of sending the command.

Break signal

The break signal functions as a substitute for the IEEE488.1 dcl / sdc (Device Clear, Selected Device Clear) message.


To use RS232C interface, you need to send "SYSTem:REMote" SCPI command to set the operating mode to"remote". Be sure to include this command at the start of the program when you are performing remote programming.