R&S SMJ100A, Operating Manual

Page: 289 / 874

Instrument Function
R&S
®
SMJ100A
273 Operating Manual 1403.7458.32 ─ 14
Note:
It is recommended to switch off the display update for optimum sweep performance
especially with short dwell times (see
Chapter 5.2.3.7, "Display Update" , on page 138).
Remote command:
[:SOURce<hw>]:SWEep:POWer:DWELl
on page 784
Global Trigger/Clock Settings
Calls the "Global Trigger/Clock Settings" dialog. This dialog is used among other things
for setting the polarity of the active slope of an applied instrument trigger.
See Chapter 5.2.3.10, "Global Trigger/Clock/External Input Settings" , on page 141.
User Marker / AUX I/O
Calls the menu for configuring the AUX I/O and user interfaces (see Chapter 5.2.3.12,
"User Marker / AUX I/O Settings" , on page 144).
The pin assignment of the AUX I/O interface is shown in the "User Marker / AUX I/O
Configuration" menu; the assignment of the USER pins 2...4 and USER 1 BNC con-
nector can be changed.
5.5.15 List Mode
Similar to a sweep, a series of previously defined frequency and level points is pro-
cessed in List mode. In contrast to a sweep, however, a list with freely selectable value
pairs (frequency and level) can be created. The value range for frequency and level
covers the entire configurable value range of the instrument.
List mode and sweeps can not be activated simultaneously, they deactivate each
other.
The lists can be created in the "List Editor". Each list is stored in its own file with the
predefined file extension
*.lsw
. The name of the list file can be freely selected. The
files are loaded from the "Lists..." file manager. Externally created tables with pairs of
frequency and level values can be converted into List files using the import function.
The external files must have the file extension
*.txt
or
*.csv
. These file formats are
provided e.g. by the Microsoft
®
Excel program. The separators for table columns and
for decimal floating-point numerals can be set. In addition, internally created List data
can be exported into ASCII files using the export function.
The necessary hardware settings are calculated the first time a list is processed. With
long dwell times, this calculation can be performed while the list is being processed;
the entered dwell times are observed. With very short dwell times, calculation of the
hardware settings increases the dwell time for the initial processing cycle; the entered
value is only observed from the second processing cycle onwards. In this case a mes-
sage appears to inform the user that there is a deviation between the current and set
dwell times. No further calculations are required after the first run through a list. The
current dwell times will definitely no longer deviate from the set dwell times.
RF Signal and Analog Modulations - RF Block