2308-900-01 Rev. A / July 2008
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Section Topics
6-5
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
Section 6: GPIB Operation
When using the MAV, two additional commands are required
*SRE 16
and the command that
waits for SRQ (specific to programming language).
Example
General bus commands
General bus commands are those commands, such as DCL, that have the same general meaning
regardless of the instrument.
Table 6-1
lists applicable general bus commands.
REN (remote enable)
The remote enable command is sent to the power supply by the controller to set up the instrument
for remote operation. Generally, the instrument should be placed in the remote mode before you
attempt to program it over the bus. Simply setting REN true does not actually place the instrument
in the remote state. You must address the instrument to listen after setting REN true before it goes
into remote.
Note that the instrument does not have to be in remote to be a talker.
Also, note that all front-panel controls except for LOCAL and POWER are inoperative while the
instrument is in remote. You can restore normal front-panel operation by pressing the
LOCAL
key.
Command
Description
*SRE 16
Sets the MAV bit to enable. This
command is required before the
sending
READ?
command.
READ?
Requests power supply to trigger a
reading for the selected function on
the battery channel (#1).
Programming language specific
Wait for SRQ.
Programming language specific
Request power supply to talk.
Table 6-1
General bus commands
Command
Effect on power supply
REN
Goes into remote when next addressed to listen.
IFC
Reset interface; all devices go into talker and listener idle states.
LLO
Local key locked out.
GTL
Cancel remote; restore front-panel operation for the power supply.
DCL
Return all devices to known conditions.
SDC
Returns power supply to known conditions.
GET
Initiates a trigger.
SPE, SPD
Serial polls the power supply.
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