Section 5
5-1
5. REMOTE CONTROL
The 6675A automatic direct-current-comparator operates directly from the front panel or under
remote control of an instrument controller, computer or terminal. Remote control can be
interactive, with the user controlling each step from a terminal, or under the control of a computer
running the 6675A in an automated system. It is also possible to connect a printer to the remote
interface of the 6675A and have the 6675A output some or all of the measurements taken to the
printer for a permanent record.
This chapter describes the interfaces and the commands to which the 6675A will respond. The
setting of the IEEE-488 address and operating mode is described in Section 4.1. A detailed
description of the remote control command set is included in Volume II of this Technical Manual.
5.1. INTERFACES
The model 6675A has two interfacing standards available:
An IEEE-488 interface conforming to IEEE-488.2.
A serial interface conforming to RS232C.
The IEEE-488 connector is mounted to the rear panel.
The IEEE-488 address defaults to a
factory setting of 04. This setting can be viewed and set to a valid address using the front panel
controls. Setting up the IEEE-488 address from the front panel is explained in section 3.7.4.1.
The RS232C connector is on the rear but it has to be configured from the front panel as explained
in Section 4.2.
5.2. IEEE-488 (GPIB) INTERFACE
The 6675A is fully programmable for use on the IEEE standard 488.1 interface bus (also known as
the General Purpose Interface Bus GPIB). The interface is also designed in compliance with the
supplemental standard IEEE-488.2. Devices connected to the bus in a system are designated as
talkers, listeners, talker/listeners, or controllers. The 6675A can be operated on the IEEE-488 bus
as a talker or under the control of an instrument controller as a talker/listener.
This manual assumes that the user is familiar with the basics of the IEEE-488 interface bus.
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