R&S FSV-K7, Руководство по эксплуатации, Страница: 49 / 262

Analog Demodulation Option R&S FSV–K7
R&S
®
FSV-K7/K7S
49 Operating Manual 1176.7561.02 ─ 06
Input 50 Ω/75 Ω
Uses 50 Ω or 75 Ω as reference impedance for the measured levels. Default setting is
50 Ω.
The setting 75 Ω should be selected if the 50 Ω input impedance is transformed to a
higher impedance using a 75 Ω adapter of the RAZ type (= 25 Ω in series to the input
impedance of the instrument). The correction value in this case is 1.76 dB = 10 log (75
Ω/50 Ω).
All levels specified in this Operating Manual refer to the default setting of the instru-
ment (50 Ω).
This function is not available for input from the R&S Digital I/Q Interface (option
R&S
FSV-B17).
Remote command:
INPut:IMPedance
on page 182
2.2.5 Softkeys of the Auto Set menu - AUTO SET Key (Analog Demodula-
tion)
The following table shows all softkeys available in the "Auto Set" menu. It is possible
that your instrument configuration does not provide all softkeys. If a softkey is only
available with a special option, model or (measurement) mode, this information is pro-
vided in the corresponding softkey description.
Adjusting settings automatically during triggered measurements
When you select an auto adjust function a measurement is performed to determine the
optimal settings. If you select an auto adjust funtion for a triggered measurement, you
can select how the R&S
FSVA/FSV should behave:
●
(default:) The measurement for adjustment waits for the next trigger
●
The measurement for adjustment is performed without waiting for a trigger.
The trigger source is temporarily set to "Free Run". After the measurement is com-
pleted, the original trigger source is restored. The trigger level for IF Power and RF
Power triggers is adjusted as follows:
Trigger Level = Reference Level - 15 dB
Auto All ..........................................................................................................................49
Auto Freq ...................................................................................................................... 50
Auto Level ..................................................................................................................... 50
Settings ......................................................................................................................... 50
└ Meas Time Manual ......................................................................................... 50
└ Meas Time Auto ..............................................................................................50
└ Upper Level Hysteresis ...................................................................................50
└ Lower Level Hysteresis ...................................................................................51
AF Auto Scale ............................................................................................................... 51
Auto All
Performs all automatic settings.
Softkeys of the Analog Demodulation option