Remote Operation
6. Remote Operation
6.1 General Information
The AC source can be remotely controlled through the GPIB or the RS-232 interface. For
RS-232 interface, only the TXD, RXD, RTS, CTS signals is used for data transfer.
6.2 GPIB Capability of the AC Source
Commands and response messages can be
sent and received over the GPIB Bus. Status
information can be read using a serial poll.
The ac source sets the SRQ line true if there is
an enabled service request condition.
The ac source powers up in local state. In local
state, the front panel is operative and the ac
source may respond to commands from GPIB.
In remote state, all front panel keys except
local key are disabled. Pressing local key
returns the ac source to local state. Local can
be disabled using local lockout so that only the
controller or the power switch can return the ac
The ac source responds to the Device Clear
(DCL) and Selected Device Clear (SDC)
interface commands. These cause the ac
source to clear any activity that would prevent it
from receiving and executing a new command.
DCL and SDC do not change any programmed
6.3 Introduction to Programming
All command and response messages are ASCII. The entire response messages should be
read before a new command is sent, otherwise the rest response messages will be lost and
a query interrupted error occurs.
6.3.1 Conventions
< > Items within angle brackets are parameter abbreviations.
| separate alternative parameters. For example, ON | OFF indicates that either "ON"
or "OFF" can be used as a parameter.
[ ] Items within square brackets are optional. For example, OUTP[:STATe] means
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