R&S SMJ100A, Руководство по эксплуатации

Страница: 711 / 874

Remote Control Commands
R&S
®
SMJ100A
695 Operating Manual 1403.7458.32 ─ 14
Example: BB:MEAS:SOURC BAWG
selects the measurement of the digital baseband signal inter-
fered with a noise signal.
Manual operation: See "Signal Source - Digital Impairments - Measurement"
on page 312
[:SOURce<hw>]:BB:MEASurement[:STATe] <State>
Activates the measurement of the digital I/Q baseband signal. When activated, infor-
mation on the peak power, power and crest factor are indicated. Additionally the dura-
tion of the measurement can be set.
Parameters:
<State> 0 | 1 | OFF | ON
*RST:
0
Example: BB:MEAS:STAT ON
starts measuring the real power values of the digital I/Q base-
band signal.
Manual operation: See "State - Digital Impairments - Measurement" on page 311
7.16.3.8 SOURce:BB:POWer Subsystem
This subsystem contains the commands for retrieving the level values of the digital
baseband signal.
[:SOURce<hw>]:BB:CFACtor?
This command queries the crest factor of the baseband signal.
Return values:
<CFactor> float
Range:
0 to 100
Increment: 0.01
*RST:
0
Default unit: dB
Example: BB:CFAC
queries the crest factor of the baseband signal.
Usage: Query only
Manual operation: See "Crest Factor - Digital Impairments" on page 311
[:SOURce<hw>]:BB:POWer:PEAK?
This command queries the peak power of the baseband signal relative to full scale of
0.5 V (in terms of dB full scale).
SOURce Subsystem