Owner manual

25
GPIB (model 9123A only) interface via a serial converter cable. This chapter describes how to use a computer to
control the output of the power supply.
4.1 Serial adapter cables
RS232 to TTL serial Converter cable IT-E131
The DB9 interface connector on the rear panel of the power supply provides a TTL level interface. Use the
communication cable (IT-E131) to connect the DB9 interface connector of the power supply to the RS-232
interface connector of the computer
PC Load
IT-E131 communication cable
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
Power
supply
PC
Note: It is not possible to connect the DB9 TTL connector on the power supply’s rear panel
supply via a standard RS232 cable to a PC’s RS232 port.
USB to TTL serial Converter cable IT-E132
The DB9 interface connector on the rear panel of the power supply provides a TTL level interface. Use the
communication cable (IT-E132) to connect the DB9 interface connector of the power supply to the USB
interface connector of the computer.
PC Load
IT-E131 communication cable
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
Power
supply
PC
Note: Before you can use the USB communication cable, you must install the USB driver which
can be found on the included installation disk. The driver can also be downloaded at
www.bkprecision.com
IT-E132 communication cable