Rohde & Schwarz CMW500 - Page 137

Remote Control
R&S
®
CMW500
121User Manual 1173.9463.02 ─ 06
The instrument is switched to remote control as soon as it receives a command from the
controller.
While remote control is active, the instrument settings are optimized for maximum mea-
surement speed. The normal display is "switched off", i.e. it shows a "Remote" dialog with
hotkeys described in the following sections. All other operation via the front panel is dis-
abled.
5.1.3.1 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.
It is recommended to switch off the display again before closing the remote connection.
Use SYSTem:DISPlay:UPDate OFF to do so.
Switching on the display is ideal for programming test purposes but tends to slow down
the measurement. Therefore it is recommended to switch off the display in real mea-
surement applications where a tested script is to be executed repeatedly.
5.1.3.2 Returning 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 manually via hotkey or via remote
control:
●
Manually: Press the "Go To Local" hotkey
If an instrument with several RX and TX signal paths is split into sub-instruments, you
can return to any of these sub-instruments. The remote screen displays several hot-
keys for this purpose.
●
Via GPIB bus or HiSLIP protocol: GTL interface message
●
Via VXI-11 protocol: &GTL 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:
●
Via GPIB bus or HiSLIP protocol: LLO interface message
Remote Control Operation