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caused by GTL do not affect the execution of the message being processed when GTL was received.
Remote-Local Operation
Most front-panel controls cause a transition from REMS to LOCS by asserting a message called return-
to-local (rtl). This transition can occur during message execution. However, in contrast to TGL and REN
transitions, a transition initiated by rtl affects message execution. In this case, the waveform generator
generates an error if there are any unexecuted setting or operational commands.
Front-panel controls that change only the display, do not affect the remote-local states. Only front-
panel controls that change settings assert rtl. The rtl message remains asserted when you enter
multiple keystroke settings from the front panel, and is unasserted after you execute the settings
changes. Since rtl prevents transition to REMS, the waveform generator unasserts rtl if you do not
complete a multiple key sequence in a reasonable length of time (about 5 to 10 seconds).
A record of the front-panel settings is in the Current Settings Buffer; however, new settings entered
from the front panel or the controller update these recorded settings. In addition, the front panel
updates to reflect setting changes from controller commands. Settings are unaffected by transitions
among the 4 remote-local states. The REMOTE indicator lights when the waveform generator is in
REMS or RWLS.
Local State (LOCS)
When in a local state (LOCS), you control the settings through the front-panel controls. In addition, only
GPIB query commands are executed. All other GPIB commandsִ setting and operationalִ prompt and
error since those commands are under front-panel (local) control.
The waveform generator can be in either Local State (LOCS) or Remote State (REMS) when it receives
the Local Lockout (LLO) interface message. If in LOCS and REN is asserted, the waveform generator
enters the Local With Lockout State (LWLS) or, if in REMS, it enters the Remote With Lockout State
(RWLS) when it receives LLO. The controller controls the LWLS and RWLS state transitions.
Local Without Lockout State (LWLS)
When the waveform generator is in a local without lockout state (LWLS), it operates the same as it does
in LOCS. However, in LWLS rtl does not inhibit a transition to remote state.
Remote State (REMS)
When the waveform generator is in a remote state (REMS), you control its operations from the
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