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A straight pin-to-pin DB9 female to DB9 male serial cable is required for using the RS-232

interface. Do not use a null modem or crossover DB9 serial cable.

Follow the steps below to configure the power supply for RS-232 operation:

1. From the SYST SET menu, select COMM and press .

2. Press keys or rotary knob until RS-232 is displayed and press to

configure the settings for RS-232 remote communication.

3. Use keys or rotary knob to select the baud rate setting and press .

4. Use keys or rotary knob to select the parity setting and press .

5. Use keys or rotary knob to select the mode setting and press .

6. If MUX mode has been selected, then specify the ADDR of the supply.

7. Press to save each setting and the display will return to the RS232 menu.

8. Below lists the options that can be changed for each setting:

Baud rate: 9600 (default), 19200, 38400, 57600, 115200

Parity/data bits: None/8 bits (default), Even/8 bits, Odd/8 bits

Note: The RS-232 interface does not have flow control mechanism. The

programmer should be aware of this limitation and notice the command

process time of the power supply. If the remote commands are sent too

fast to the power supply, the internal buffer may overrun and cause a

communication error. Therefore, a delay between commands to let the

power supply have enough time to process them is mandatory.

9. All serial settings must match the settings configured on the PC in order for

communication to link successfully.

USB

The standard USB port is a USBTMC-compliant port that can be used for remote

communication. There are no additional settings in the menu system for USB configuration. The

only requirement is that NI-VISA is installed on the computer, which can be downloaded at

http://www.ni.com/visa/.

Follow the instructions below to select the USB interface for remote operation.

1. From the SYST SET menu, select COMM and press .

2. Press keys or rotary knob until USB is displayed and press .

3. To exit the menu at any time, press key twice.

BK Precision 9200B Series User Manual

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