Keithley 6485, User Manual

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7-2 Remote Operation and Commands Model 6485 and 6487 User’s Manual
Selecting and configuring an interface
Interfaces
The Model 6485/6487 supports two built-in remote interfaces: GPIB interface and RS-232
interface. You can use only one interface at a time. At the factory, the GPIB is selected.
To select the interface, press COMM, select RS 232 or GPIB, then press ENTER. The
Model 6485/6487 will reset with the new interface selected.
GPIB interface
To configure the GPIB (IEEE-488) interface, press CONFIG then COMM when the
GPIB interface is selected, then select the primary address (0-30; Model 6485 default 14;
Model 6487 default 22) and language (SCPI, DDC, or 488.1). The primary address must
be the same as that specified in the computer program, but be sure to avoid address con-
flicts. Use the SCPI language setting for most applications. See the Model 6485 Instruc-
tion Manual or Model 6487 Reference Manual for information on the DCC and 488.1
programming languages.
RS-232 interface
To configure the RS-232 interface, press CONFIG then COMM when the RS-232 inter-
face is selected, then set baud rate, data bits, parity, terminator, and flow control. To
assure proper operation, be sure that interface parameters are the same as those used by the
controlling computer.
Connections
GPIB connections
With the power off, connect a shielded GPIB cable (Keithley Model 7007) between the rear
panel IEEE-488 connection (
Figure 7-1 or Figure 7-2 ) and the computer bus connector.
RS-232 connections
With the power off, connect the Model 6485/6487 RS-232 connector ( Figure 7-1 or
Figure 7-2 ) to the computer serial port using a straight through shielded RS-232 cable ter-
minated with DB-9 connectors (Keithley Model 7009). Do not use a null modem cable .