R&S NRP
Measuring av. burst power (Burst Av mode)
1144.1400.12 2.21
E-2
Measuring av. burst power (Burst Av mode)
An R&S NRP-Z1x or R&S NRP-Z2x diode sensor is required for this measurement. To make measure-
ments possible, a pulsed RF signal with a pulse repetition frequency not exceeding 10 kHz should be
available.
The R&S NRP-Z1x and R&S NRP-Z2x sensors have two measurement modes for RF burst power:
Burst Av and Timeslot.
An external trigger is not required in the
Burst Av
mode – the sensor automatically determines the trig-
ger point from the measured signal. It is also not necessary to specify the width of the burst as the sen-
sor determines the end of the burst automatically.
1
Setting the burst mode.
¾
Connect an R&S NRP-Z1x or R&S NRP-Z2x sensor
to connector A on the R&S NRP and apply a pulsed
signal with a level between –10 dBm and +10 dBm.
({PRE}SET)
*
*
¾
Press
the
({PRE}SET)
key twice.
A measurement window is now available.
¾
Change to the Sensor menu and select
Mode…
. When
the Mode dialog box opens, select
Scope
.
¾
Once in the Scope mode (see section
)
Scope),
make sure that the sensor detects a signal and relia-
bly triggers.
¾
Change back to the Sensor menu and select
Mode…
.
When the Mode dialog box opens, select
Burst
.
The burst mode parameters are displayed at the bottom
of the dialog box.
To exclude the pulse build-up and decay phases from the
measurement, you can set the
Excluded from Start
and
Excluded from End
parameters accordingly.
The parameter
Dropout
helps to ensure the reliable detec-
tion of the end of modulated-signal bursts (e.g. NADC).
See Chapter 4, Measuring the average burst power, for a
detailed description.
