97
HP-IB Programming
Introduction to Programming the OLA
Local Mode
The instrument is operated using the front panel
keys.
Remote
After reception of the first command or query via the HP-
IB, the instrument is put into remote state. The softkeys are erased.
The right-hand softkey is replaced by
L
OCAL
. This is the only
active softkey. It can be pressed to reset the OLA manually to local
mode.
To re-establish the local mode from the controller, you can send the
HP-IB bus command “GTL”.
Remote with Lockout
When the controller issues the HP-IB bus
command “LLO”, the OLA is put into Remote with Lockout State
(RWLS). In this mode, local operation is not possible. The RWLS
mode can only be terminated by sending the “GTL” command.
OLA Specific Features
When operating the OLA remotely, please note:
•
The display reacts on changes of the instrument mode triggered
via the HP-IB.
•
Starting an application via the HP-IB stops any other application
(it acts like pressing the A
PPL
key and then choosing an
application).
•
Starting “Stability” is only possible after starting an application.
To leave the Stability application, one has to reactivate the
original application.
•
When leaving HP-IB remote control, the last local mode (prior
to the first HP-IB command) will not be restored. Instead, the
instrument remains in its current mode.
•
The HP-IB commands will be accepted and executed in
sequence, that is, a new HP-IB command will only be executed
after any previous command has been serviced.
•
The number of visible digits cannot be changed via the HP-IB.
•
The syntax used for sweeping and moving the paddles is the
same as for the HP 11896A.
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