R&S ZNC3, Руководство пользователя

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Remote Control
R&S
®
ZNC
344 User Manual 1173.9557.02 ─ 13
The following program example illustrates how to create, select and reference traces. It
is instructive to observe the analyzer screen in order to check the effect of each step.
Example:
*RST
Reset the analyzer, creating channel no. 1 with the default trace "Trc1". The trace is
displayed in diagram area no. 1.
CALC1:PAR:SDEF 'Trc2', 'S11'
;
DISP:WIND:TRAC2:FEED 'Trc2'
Create a new trace named "Trc2", assigned to channel no. 1 (the suffix 1 after
CALC
, may
be omitted), and display the trace. The new trace automatically becomes the active trace
for manual and for remote control. To check this, tap "Trace – Marker – Marker 1" to
create a marker. The marker is assigned to "Trc2". Delete all markers ("Trace – Marker
– All Markers Off").
CALC1:MARK ON
Example:
To verify that "Trc2" is also active for remote control, use the channel suffix 1 after
CALC
(may be omitted) to reference the active trace in channel 1 and create a marker
"Mkr 1". The marker is assigned to "Trc2".
Example:
CALC:PAR:SEL 'Trc1'
;
CALC1:MARK ON
Select the old default trace "Trc1" as the active trace for remote control. Create a new
marker to verify that "Trc1" is now the active trace in channel 1.
In the SCPI command description, the numeric suffix
<Ch>
is used for channel settings
(it denotes the configured channel), whereas
<Chn>
is used for trace settings (it denotes
the active trace in the channel).
5.3.3 Initiating Measurements, Speed Considerations
After a reset the network analyzer measures in continuous mode. The displayed trace
shows the result of the last sweep and is continuously updated. This provides a perma-
nent visual control over the measurement and the effect of any analyzer settings.
In remote control, it is advisable to follow a different approach in order use the analyzer's
resources to full capacity and gain measurement speed. The following principles can help
to optimize a remote control program (see also programming example in
​
chapter 7.1.1,
"Typical Stages of a Remote Control Program" , on page 703):
●
Switch off the measurement while configuring your instrument.
●
Use a minimum number of suitably positioned sweep points.
●
Start a single sweep, observing proper command synchronization, and retrieve your
results.
The following command sequence performs a single sweep in a single channel.
Basic Remote Control Concepts