Remote Operation; Address And Baud Rate Selection - TTI PL-P Serie Manuel D'utilisation

The following sections detail the operation of the instrument via both GPIB and ARC. Where
operation is identical no distinction is made between the two. Where differences occur these are
detailed in the appropriate sections or in some cases separate sections for GPIB and ARC. It is
therefore only necessary to read the general sections and those sections specific to the interface
of interest.

Address and Baud Rate Selection

For successful operation each instrument connected to the ARC or GPIB must be assigned a
unique address and, in the case of ARC, all must be set to the same baud rate. On these power
supplies the address and baud rate are selected by the set of 8 dip switches on the rear panel.
The switch functions are as shown below:
Most switch states are read at power up so changes may not be acted upon if the instrument is
already powered on and it will be necessary to switch off then on again to make the settings valid.
When operating on the GPIB all device operations are performed through a single primary
address, no secondary addressing is used.
NOTE: GPIB address 31 is not allowed by the IEEE.488 standards and should not be used.
Remote/Local Operation
At power-on the instrument will be in the local state with the REMOTE lamp off and the ERROR
LED off.
If the REMOTE/LOCAL switch is in the LOCAL position, the instrument will respond to the front
panel voltage and current controls and will ignore any remote commands. The presence of any
remote data will however be indicated by the ERROR LED flashing as commands are received.
If the REMOTE/LOCAL switch is in the REMOTE position the front panel controls will be
inoperative and the instrument will respond to remote commands. When the instrument is
addressed to listen and a command is sent the remote state will be entered and the REMOTE
LED will be turned on.
For proper remote control operation the REMOTE/LOCAL switch must be set to REMOTE and all
output switches must be on. For rack mounted applications a kit is available which includes the
rack mounting hardware and a cover for these switches so that they will not be inadvertently
switched off.
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Remote Operation