Measuring average power in defined time interval
R&S NRP
1144.1400.12 2.22
E-2
Measuring average power in defined time interval
(Timeslot mode)
In the
Timeslot
mode, average power can be measured in a defined time interval of any complex signal.
An external trigger signal is normally used since it always ensures reliable triggering and the measure-
ment of very low power. Thus, for example, the power in one or more timeslots of TDMA signals can be
measured simultaneously.
1
Setting the Timeslot mode.
¾
Connect a power sensor of the R&S NRP-Z1x or
R&S NRP-Z2x family to connector A of the R&S NRP
and apply a signal having TDMA time structure within
the level range –10 dBm to +10 dBm.
¾
Once in the Scope mode (see section
)
Scope),
make sure that the sensor detects a signal and relia-
bly triggers.
¾
Change to the Sensor menu and select
Mode…
. When
the Mode dialog box opens, select
Timeslot
.
The associated parameters will appear in the lower part
of the dialog box.
¾
Under
Nominal Width
, set the nominal value of the
timeslot width.
¾
Under
Excluded from Start
and
Excluded from End
, define
the portions to be excluded from the measurement.
¾
Use
No. of Timeslots
to set the number of timeslots in a
TDMA frame.
9
Tip
Excluded from Start
and
Excluded from End
can also be set
interactively in the Scope display on the T'slots page.
For a detailed description, see Chapter 4, "Measuring the
power of TDMA signals".
