Rohde & Schwarz 1309.6000.08 - Unit for Power Display; Power Measurements on TDMA Signals

R&S FSH Power measurements on TDMA signals
1309.6275.12 4.39 E-2
Unit for power display
T
he R&S FSH can use different units for power output. The basic unit is dBm.
 Press the PWR UNIT softkey.
The R&S FSH opens the submenu with the units: dBm,
dBmV and dBKV.
 Using the rotary knob or the cursor keys, select the
required unit.
 Confirm your selection with the ENTER key or the
PWR UNIT softkey.
The R&S FSH displays the power level in the selected
unit.
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, sele
ct
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.