Clear Lockout/Set Local; Local; Local Lockout; Parallel Poll - HP 3324A Operating And Programming Manual

Clear Lockout/Set

Local

Local

Local Lockout

Parallel Poll

Pass Control

Remote

The clear lockout/set local command removes all devices
from the local lockout mode and returns the HP 3324A
to local (front panel) control. The HP-IB is in the local
mode because the REN bus management line is set false.
The local command clears the remote command from the
listening device and returns the listening device to local
(front panel) control. If local lockout is not in effect, the
HP 3324A responds by returning to front panel control.
The Remote indicator on the front panel extinguishes if
the HP 3324A is in Remote prior to the Local command.
The local lockout command disables the m front
panel key to avoid operator interference. The HP 3324A
front panel is locked out.
The parallel poll command is a controller operation used
to obtain information from the devices under its control.
The HP 3324A does not respond to this bus command.
The pass control command shifts system control from
one controller to another. The HP 3324A does not
respond to this command.
The remote command directs an instrument to take
instructions from the HP-IB instead of the instrument's
front panel. To implement the remote command, the
controller must set the REN bus management line true.
When the HP 3324A accepts the remote command, the
Remote front panel indicator illuminates and the front
panel is disabled except for the Local key which can
return control of the instrument to the front pa.nel if
pressed. If the local lockout message is also issued, the
mode cannot be changed from remote to local via the
front panel Ilocal) key.