Instrument Function
R&S
®
SMC100A
122
Operating Manual 1411.4060.32 ─ 04
The value specifies the upper limit of the level at the RF output connector. A message
appears if an attempt is made to set a level above this limit and the level at the RF output
is confined to the upper limit. However, the level indication is not influenced.
The value is not affected by an instrument preset (PRESET key),
*RST
and the "Save/
Recall" function. This parameter is influenced only by the
value is equal to the upper limit.
SCPI command:
Offset (Level) - RF Level
Sets the level offset relative to the RF level.
The level offset of a downstream instrument (e.g. an attenuator or amplifier) is entered.
The entry does not change the value of the RF level at the RF output. It only changes the
RF level displayed in the display header. The value of the RF level in the header corre-
sponds to the level at the output of the downstream instrument.
SCPI command:
Attenuator Settings
The attenuator mode is set in the Attenuator Settings section.
Attenuator Mode - RF Level
Sets the attenuator mode at the RF output.
"Auto"
Standard mode.
"Fixed"
When this operating mode is switched on, the attenuator and the relays
are fixed in their current positions to provide level settings without inter-
ruption. The resulting variation range is defined and displayed under
"Attenuator Fixed Range".
Note:
The function is effective when automatic level control is activated
("ALC State = On").
If the normal variation range is overranged or underranged, level errors
increase considerably and the warning "Level under/overrange"
appears in the info line. The spectral purity of the output signal decrea-
ses with high attenuation.
SCPI command:
Fixed Range (PEP) In
Displays the level range in which the level is set without interruption for the "Attenuator
Mode fixed" setting.
SCPI command:
RF OFF Mode
Selects the attenuator mode, when the RF signal is switched off.
RF Signal - RF Block
