Rohde & Schwarz FSH3 - Selecting the Unit for the Power Readout

R&S FSH3 Setting and Using the Measurement Functions
¾ Press the ZERO softkey.
The R&S FSH3 outputs a message to inform the user
that no signal should be present at the power sensor
input while zeroing is being performed.
¾ Disconnect the power sensor from any signal
sources.
¾ Start zeroing by pressing CONTINUE (first or
second softkey).
Zeroing can be aborted before it is started by pressing
CANCEL (4th or 5th softkey), for example if a signal
source cannot be disconnected.
The R&S FSH3 immediately starts zeroing the power
sensor after CONTINUE is pressed. While zeroing is in
progress, the message "Zeroing power sensor, please
ait..." is displayed on the R&S FSH3. w
When zeroing is completed, the R&S FSH3 outputs the
message "Power Sensor Zero OK" and switches back
to the softkey menu for the power sensor.
Selecting the unit for the power readout
The R&S FSH3 displays the measured forward power as a logarithmic level value in dBm (relative
value) or as a linear value in W or mW (absolute value). Moreover, a reference level can be defined
relative to which the R&S FSH3 indicates the level difference in dB. Load matching is indicated as
return loss in dB or as voltage standing wave ratio (VSWR).
¾ Press the UNIT softkey.
The menu for selecting the units for forward power and
reflected power display opens.
¾ Using the rotary knob or the cursor keys, select the
parameter for which a unit is to be entered.
¾ Confirm the parameter with the ENTER key or the
UNIT softkey.
A submenu with the available units opens.
For the forward power, the following units can be
selected:
dBm
W
dB REL...
For the reflected power, the following units can be
selected:
dB (return loss)
VSWR
1145.5973.12 4.51 E-6