Rohde & Schwarz CMU 200 - Return to Manual Operation

Operation via Remote Control CMU
1100.4903.12 5.4 E-8
Report
Display
The Report Display hotkey can be activated (state ON, press the ON/OFF key) to
display the input and output strings of the remote-control interface on the Remote
screen. The remote display consists of three columns:
<Input/ouput> Colored symbols for input (–>) to the CMU, output (<–) or error
messages (E).
Fct. Grp. Name of the addressed function group; see description of com-
mand SYSTem:REMote:ADDRess:SECondary in Chapter 6.
Command Input command string, response/output string of the CMU or
error message
Remote control
TRACe:REMote:MODE:DISPlay ON | OFF
Report
File
The Report File hotkey can be activated (state ON, press the ON/OFF key) to write
the input and output strings of the remote-control interface to a file named Re-
mote.trc in the root directory of the internal hard disk (INTERNAL directory in the
Data menu or directory C:\temp). The two softkeys Report Display and Report File
may be active (ON) at the same time.
Remote control
TRACe:REMote:MODE:FILE ON | OFF
Local
The Local hotkey switches back to manual control. The current measurement and
generator states and the current signalling state (if a Signalling test mode is active)
are preserved; see also section Return to Manual Operation below.
Remote control
GTL interface message, included in the NI command IBLOC (device%)
(addressed command; see Chapter 8)
Equivalent CMU-specific command, also for operation via serial interface: *GTL
Return to Manual Operation
Return to manual operation can be initiated via the front panel or the GPIB bus.
Manually: ! Press any key at the front panel or press the Local hotkey in the Remote
screen. The current measurement and generator states and the current sig-
nalling state (if a Signalling test mode is active) are preserved.
Note:
– Before returning to manual control, command processing must be com-
pleted. If this is not the case, the CMU switches back to remote control im-
mediately.
– Returning to manual control by pressing any front panel key can be disabled
by the GPIB Local Lockout Message (LLO; see Chapter 8, Table Universal
Commands), which is also included in the NI commands SetRWLS (Set
Remote With Lockout State) or SendLLO. This prevents unintentional
switchover, i.e. return to manual control is possible via the GPIB bus only.
The CMU-specific command *LLO TRUE is equivalent to LLO.
– Returning to manual control via the front panel keys can be enabled again
by deactivating the REN control line of the GPIB bus (see Chapter 8). The
CMU-specific command *LLO FALSe also enables return to manual con-
trol.