R&S FSH
Power measurements on TDMA signals
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Power measurements on TDMA signals
When TDMA (time division multiple access) methods are used, e.g. for GSM, several users share a
channel. Each user is assigned a period of time or timeslot. The R&S FSH’s TDMA POWER function
measures the power over one of these timeslots. This is a time-domain measurement (span = 0 Hz).
The power measurement is started on an external trigger or the video trigger. The power measurement
time is selected with MEAS TIME.
To prevent incorrect power measurements in the time domain, ensure that the whole signal lies within
the selected resolution bandwidth. If the resolution bandwidth is too narrow, the displayed power will be
lower than the actual power.
Press the MEAS key.
Press the MEASURE softkey.
The measurement function menu will open.
Using the rotary knob or the cursor keys, select
TDMA POWER.
Confirm your selection with the ENTER key or the
MEAS softkey.
The R&S FSH will display the softkeys for configuring
time-domain power measurements.
Standard
Power readout
Measurement time
Trigger
level
Measurement
Limits
Selecting a standard
When the function is switched on, the R&S FSH automatically selects the GSM/EDGE standard. All
default settings are selected so that power measurements on GSM or EDGE bursts give true readings.
A different default setting can be configured with USER.
