Preparing for Use
R&S
®
SMB100A
30
Operating Manual 1407.0806.32 ─ 21
Press the SETUP key and select "System > Internal Adjustments" to access the
dialog for preforming and configuring of the adjustments settings. A maximum level
accuracy can be obtained, for instance.
●
Selftest
A selftest is provided for service purposes.
2.3.5.4
Default Settings
When the instrument is switched on, it is not the preset state that is active, but rather
the instrument state that was set before the instrument was switched off. It is also reco-
mended that you use the PRESET key to return the instrument to its defined preset
state every time a new configuration is required or the current setup is not anymore rel-
evant.
The R&S
SMB offers a two-stage preset concept:
●
Preset the instrument to a predefined state
The PRESET key calls up a defined instrument setup. All parameters and switch-
ing states are preset (also those of inactive operating modes). The default instru-
ment settings provide a reproducible initial basis for all other settings. However,
functions that concern the integration of the instrument into a measurement setup
are not changed, e.g. GPIB bus address or reference oscillator source settings.
●
Preset the instrument to its factory settings
The instrument can also be forced to load its default factory settings. To access the
corresponding dialog box, press the SETUP key and select the "Factory Preset".
For more information and an overview of the settings affected by the factory preset
function, see
Chapter 5.2.3.20, "Factory Preset"
Overview of the Most Important Preset States
The following list gives an overview of the presets for the most important generator set-
tings. The other presets can be found in the preset tables of the individual menus and
the information accompanying the remote commands.
●
"RF frequency" = 1 GHz
●
"RF level" RF output switched off
●
"Level" = 30 dBm for instruments including an attenuator
"Level" = -5 dBm for instruments with no attenuator
●
"Offsets" = 0
●
"Modulations State" = Off
●
Uninterrupted level settings are switched off
"Level Attenuator Mode" = AUTO
●
Internal level control "Level ALC" = AUTO
●
User correction "Level Ucor" = OFF
●
"LF output State" = Off
●
"Sweep State" = Off
Settings that are not affected by the PRESET key
●
Reference frequency settings ("Ref Oscillator" menu)
Putting into Operation
