Specifications

R&S FSH Measurements on CW Signals
1145.5973.12 2.9 E-10
Two-Port Transmission Measurements
(Only for R&S FSH with tracking generator: order no. 1145.5850.13, 1145.5850.23 or 1145.5850.26.)
For measurements of the gain or attenuation of two-port devices, the R&S FSH provides a tracking
generator which generates a sinewave signal exactly at the receive frequency of the R&S FSH.
¾ Press the MEAS key.
¾ Press the MEASURE softkey.
The measurement function menu opens.
¾ Using the cursor keys or the rotary knob, select the TRACKING GEN menu item and confirm your
selection with the ENTER key or the MEAS softkey.
The R&S FSH switches on the tracking generator and calls up its softkey menu.
When the tracking generator is switched on, the R&S FSH displays Track Gen Uncal . This indicates
that tracking generator measurements are uncalibrated.
Before calibration, the span you want should be set because calibration is valid only for the calibrated
span. Changing the frequency settings after calibration invalidates calibration.
¾ Press the FREQ key.
¾ Using the numeric keys, enter the center frequency.
¾ Press the SPAN key.
¾ Using the numeric keys, enter the span.
Alternately, the start and stop frequencies can be entered using the START and STOP softkeys in the
frequency menu.
Calibrate the R&S FSH for the transfer function measurement.
The following example shows a scalar measurement of the transmission function. If the option
R&S FSH-K2 is installed, the measurement must first be switched to scalar.
¾ Press the MEAS key.
¾ Press the MEAS MODE softkey.
¾ Using the rotary knob or cursor keys, select SCALAR.
¾ Confirm with the ENTER key or the MEAS MODE softkey.
¾ In the main menu for the tracking generator, press
the MEAS key.
¾ Press the TRANSM CAL softkey.
The R&S FSH now prompts you to connect the RF
input to the tracking generator’s output so that
calibration can be carried out.
¾ Connect the RF output to the generator’s input
without the DUT.
¾ Press the CONTINUE softkey to start calibration.
During calibration, the R&S FSH outputs the message
"Calibrating THROUGH, please wait...".