R&S ESR Series, Руководство пользователя

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Spectrum Measurements
R&S
®
ESR
425 User Manual 1175.7068.02 ─ 12
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:BPOWer:MODE
on page 884
CALCulate<n>:MARKer<m>:FUNCtion:BPOWer:RESult?
on page 884
Density ← Band Power
Selects the density mode for the band power marker, i.e. the result is displayed in
dBm/Hz.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:BPOWer:MODE
on page 884
CALCulate<n>:MARKer<m>:FUNCtion:BPOWer:RESult?
on page 884
Setting a Fixed Reference Point (Phase Noise Measurement)
1. Press the Phase Noise softkey.
The submenu with the Phase Noise On/Off softkey switched on is displayed. The
level and frequency or time values of marker 1 immediately become the reference
point.
2. Setting the maximum of the selected trace as reference point, press the Peak
Search softkey.
3. To define the values for the reference point, proceed as follows:
a) Press the Ref Fixed softkey.
b) Press the Ref Point Level softkey and enter a reference level value.
c) If span > 0, press the Ref Point Frequency (span > 0)/Ref Point Time (zero
span) softkey and enter a frequency reference value.
d) If span = 0, press the "Ref Point Time" softkey and enter a reference time value
(see "Ref Point Frequency (span > 0)/Ref Point Time (zero span)"
on page 418).
Setting the Demodulation Mode and Duration
1. Press the Marker Demod softkey.
The submenu with the Mkr Demod On/Off softkey switched on is displayed.
2. To change the demodulation mode, press the AM or FM softkey.
3. For details see "AF Demodulation" on page 425.
4. To modify the demodulation time for span > 0, press the Mkr Stop Time softkey.
5. To change to continuous demodulation for span > 0, press the Continuous Demod
(span > 0) softkey.
AF Demodulation
The R&S ESR provides demodulators for AM and FM signals. With these demodula-
tors, a displayed signal can be identified acoustically by using headphones.
Analysis