Rohde & Schwarz FSH4 - Measuring the Power with a Power Sensor

R&S FSH Getting Started
Using a Power Sensor
Quick Start Guide 1309.6269.12 - 09 65
2.3.1 Measuring the Power with a Power Sensor
The power sensors R&S FSH-Z1 and R&S FSH-Z18 measure the power in the range
from 10 MHz to 8 GHz and 18 GHz respectively.
For more information about the characteristics of the R&S NRP power sensors, refer to
their datasheets.
Risk of damaging the power sensor
Because of high input power,
● the continuous power applied to the power sensor’s input must not exceed
400 mW (26 dBm)
● use an attenuator for measurements on highpower transmitters
However, brief power peaks ≤10 µs up to 1 W (30 dBm) are permissible.
Test setup
Connect the cable of the power sensor to the power sensor jack of the R&S FSH.
1 Power sensor R&S FSH-Z1 or R&S FSH-Z18
2 Power sensor connector (DUT)
3 Power sensor jack
Measuring the power
► Press the MODE key.
► Press the "Power Meter" softkey.
The R&S FSH switches its operating mode.
If the R&S FSH recognizes a power sensor, it sets up a connection via the interface
and after a few seconds shows the measured power.
If no power sensor has been connected or is not connected appropriately, the
R&S FSH shows nothing.