R&S SMJ100A, Руководство по эксплуатации

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Instrument Function
R&S
®
SMJ100A
308 Operating Manual 1403.7458.32 ─ 14
Set Level Via
Selects the level type (peak level/level) that is used to set the signal level. The entry
field is activated in the status bar and the value can be edited directly. Either the "Peak
Level " or the "Level" entry field can be edited in a path.
The level entry fields and the corresponding units are displayed in the status bar.
"Peak Level" The signal level is expressed in terms of a peak envelope power
value (PEP).
"Level" The signal level is expressed in terms of a rms value.
The level always refers to the RMS value of the output signal without
noise, even if the AWGN generator is activated.
Remote command:
[:SOURce<hw>]:IQ:OUTPut:POWer:VIA
on page 735
Peak Level - Digital I/Q Out
The signal level is expressed in terms of a peak envelope power value (peak level).
The level entry fields and the corresponding units are displayed in the status bar. The
level display always refers to both signal components (SQR(I
2
+Q
2
)).
Remote command:
[:SOURce<hw>]:IQ:OUTPut:DIGital:POWer:PEP
on page 734
Level - Digital I/Q Out
The signal level is expressed in terms of an rms level value.
The level entry fields and the corresponding unit are displayed in the status bar. The
level display always refers to both signal components (SQR(I
2
+Q
2
)).
Remote command:
[:SOURce<hw>]:IQ:OUTPut:DIGital:POWer:LEVel
on page 733
User Variation
If the level is set using the rotary knob, the step width is defined in the User Variation
section.
Variation Active - Digital I/Q Out
Activates the user-defined step width that is used by varying the level value with the
rotary knob.
"On" The level value set with the rotary knob is varied using the user-
defined step width which is entered under "Variation Step".
"Off"
The level value set with the rotary knob is varied in steps of one unit
at the cursor position (standard operating mode).
Remote command:
[:SOURce<hw>]:IQ:OUTPut:DIGital:POWer:STEP:MODE
on page 735
Variation Step - Digital I/Q Out
Sets the user defined step width for entering the level value using the rotary knob.
Level variation with this step width must be activated with "Variation Active ON".
Impairment of Digital I/Q Signal and Noise Generator - AWGN/IMP Block