R&S ESR Series, User Manual

Page: 380 / 1126

Spectrum Measurements
R&S
®
ESR
377 User Manual 1175.7068.02 ─ 12
Sweep mode:
●
RBW > 500 kHz: 40 MHz, nominal
●
RBW
≤
500 kHz: 6 MHz, nominal
FFT mode:
●
RBW > 20 kHz: 40 MHz, nominal
●
RBW
≤
20 kHz: 6 MHz, nominal
Note: Be aware that in auto sweep type mode, due to a possible change in sweep
types, the bandwidth may vary considerably for the same RBW setting.
The R&S ESR is triggered as soon as the trigger level is exceeded around the selected
frequency (= start frequency in the frequency sweep).
Thus, the measurement of spurious emissions, e.g. for pulsed carriers, is possible
even if the carrier lies outside the selected frequency span.
Remote command:
TRIG:SOUR IFP
, see
TRIGger<n>[:SEQuence]:SOURce
on page 839
SWE:EGAT:SOUR IFP
for gated triggering, see
[SENSe:]SWEep:EGATe:SOURce
on page 842
Time ← Trg/Gate Source
Opens an edit dialog box to define a repetition interval in which the measurement is
triggered. The shortest interval is 2 ms.
Remote command:
TRIG:SOUR TIME TRIGger<n>[:SEQuence]:SOURce
on page 839
Trg/Gate Level
Opens an edit dialog box to enter the trigger/gate level.
For details see also Chapter 6.2.8.3, "Using Gated Sweep Operation" , on page 381.
In the trigger modes "Time" and "Power Sensor", this softkey is not available.
Remote command:
TRIGger<n>[:SEQuence]:LEVel:IFPower
on page 838
TRIGger<n>[:SEQuence]:LEVel:VIDeo
on page 838
Trg/Gate Polarity
Sets the polarity of the trigger/gate source.
The sweep starts after a positive or negative edge of the trigger signal. The default set-
ting is "Pos". The setting applies to all trigger modes with the exception of the "Free
Run", "Power Sensor" and "Time" mode.
For details also see Chapter 6.2.8.3, "Using Gated Sweep Operation" , on page 381.
"Pos" Level triggering: the sweep is stopped by the logic "0" signal and
restarted by the logical "1" signal after the gate delay time has
elapsed.
"Neg" Edge triggering: the sweep is continued on a "0" to "1" transition for
the gate length duration after the gate delay time has elapsed.
Remote command:
TRIGger<n>[:SEQuence]:SLOPe
on page 839
[SENSe:]SWEep:EGATe:POLarity
on page 842
Configuration