Section 5
5-6
5.3. RS232C INTERFACE
The 6675A has an RS232C interface which can be connected to a controller or to a simple printer.
The controller (which can be almost any computer with an RS232C interface) can control the
6675A through a variety of commands which allow setting the instruments operating parameters,
and analyzing the measurements made by the 6675A. The simple printer interface can be used to
log any or all of the measurements taken by the 6675A during normal operation.
A double shielded RS232 cable assembly is recommended for attachment to this communication
port. Guildline part number 996-00070 is a 2 meter double shielded, male-female, RS232 cable
assembly, suitable for this purpose.
When using the RS232C port to remotely control the 6675A, either interactively with a terminal or
under computer control, operation is the same as using an IEEE-488 controller connected to the
IEEE-488 port for control, with the following exceptions:
The end of line input terminator is Carriage Return (0x0D).
There is no SRQ capability when using serial remote control. The status registers
still behave as described in this chapter, but the 6675A serial interface does not have
a way to perform the SRQ function.
There is no direct way to perform IEEE-488 hardware interface functions such as
DCL (Device CLear) or SDC (Selected Device Clear).
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