Remote Control
R&S
®
CMW500
124
User Manual 1173.9463.02 ─ 02
The displayed remote trace is similar to the remote trace displayed via the LXI home-
page, with the softkeys provided in ANALYSE mode corresponding to toolbar buttons
of the LXI remote trace. For a detailed description of the LXI remote trace see
ter 6.9.4, "SCPI Remote Trace"
6.1.4.2
Using the Display during Remote Control
It is possible to switch on the display during remote control, using the command
SYSTem:DISPlay:UPDate ON
. This allows to observe the screen, e.g. measurement
results, while a remote control script is executed and the control elements on the front
panel are still disabled.
Switching on the display is ideal for program test purposes but tends to slow down the
measurement. Therefore it is recommended to switch off the display in real measurement
applications where a tested program script is to be executed repeatedly. It is also rec-
ommended to restore the default setting after using the display
(
SYSTem:DISPlay:UPDate OFF
).
See also
6.1.4.3
Return to Manual Operation
The R&S CMW500 switches back to manual operation when the remote connection is
closed. Besides, return to manual operation can be initiated via the front panel or via
remote control.
●
Manually: Click the "Go To Local" hotkey
●
Via GPIB bus: CALL IBLOC(device%), GTL interface message
●
Via VXI-11 protocol: >L interface message
A "Go To Local" can be useful while a remote program pauses, e.g. to check the current
instrument state on the display. When the program continues sending messages, the
R&S CMW500 will switch back to remote control immediately.
Local lockout
You can prevent the instrument from returning to manual control using a Local Lockout
Message:
●
, Universal Commands
●
Via VXI-11 protocol: &LLO interface message
●
Many instrument driver commands, e.g. the NI commands SetRWLS (Set Remote
With Lockout State) or SendLLO, also contain a local lockout command.
In the local lockout state an unintentional return to manual control is not possible. All "Go
To Local" options listed above are blocked (hotkey and remote control). The "Go To
Local" hotkey is replaced by a disabled "Local Lockout" hotkey.
The local lockout can be disabled:
●
Via GPIB bus: deactivate the REN control line
Remote Control Operation
