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FIVE: REMOTE OPERATION
The programmable Power Supply Series from American Reliance are compatible with
ANSI/IEEE 488.1
. This is
the "Standard Digital Interface for Programmable Instrumentation". This standard provides a means for an
electrical and mechanical system to interconnect electronic measurement devices.
Several key specifications of IEEE 488.1 are:
•
Interconnect Devices - Up to 15 devices on one bus.
•
Interconnection Path - The total transmission path for a star or linear bused networks is up to 20
meters.
•
Signal Lines - Sixteen active lines; 8 data lines, and 8 interface and communication
management lines.
•
Message Transfer Scheme - Byte-serial, bit-parallel, asynchronous data transfer using interlocking three
wire handshake technique.
•
Maximum Data Rate - One megabyte per second over limited distances. Typical transmission rate is
250 kilobytes per second. The actual data transmission rate is usually
determined by the slowest device in communication at that time.
•
Address Capability - There can be a maximum of one talker and up to 14 listeners at one time.
•
Pass Control - If a system has more than one controller, only one controller may be active at a
time. The active controller may pass control to one of the other passive
controllers. Only the controller designated as system controller can demand
control. However, a non-active controller may request control.
•
Interface Circuits - Driver circuits are TTL and Schottky compatible.
5.1 INTRODUCTION
This section contains information on controlling the power supply via a computer. This material is presented in a
normal manner in which a majority of programmers may benefit. Main topics of operation to be covered are:
GPIB Operation
Programming Syntax
Programming the Power Supply
The GPIB sections discuss the interface functions, settings and interface. The Programming Syntax section lists all
available programming commands. Last, "Programming the Power Supply" includes a variety of conditions,
commands and samples useful for controlling the power supply via the computer.
