Rohde & Schwarz FSH4 - Identifying Cable Faults

R&S FSH Getting Started
Identifying Cable Faults
Quick Start Guide 1309.6269.12 - 09 69
2.4 Identifying Cable Faults
The R&S FSH can perform cable measurements if it features a tracking generator and
VSWR bridge. You also have to equip it with firmware option R&S FSH-K41 (DTF
measurements, order no. 1304.5612.02).
Test setup
The test setup requires an R&S FSH, an RF cable (for example R&S FSH-Z320) and a
calibration standard (for example R&S FSH-Z28 or R&S FSH-Z29).
1 RF input (port 1)
2 RF cable
3 Calibration standard
4 Test cable (DUT)
► For measurements on DUTs that require an external voltage supply (for example
power amplifiers), connect the supply voltage from a suitable AC power supply to
the BIAS PORT 1 input.
► Connect the RF test cable to the RF input of the R&S FSH.
You should use the RF cable. Otherwise, measurement results may be invalid.
Starting the measurement
► Press the MODE key.
► Press the "Distance-to-Fault" softkey.
The R&S FSH starts the distance-to-fault measurement.