Two-port measurements with the tracking generator R&S FSH
1309.6275.12 4.48 E-2
Note: With an SD memory card inserted, you can toggle between internal
memory and the memory card with the INTERNAL/SD-CARD softkey.
Setting the output level:
Press the TG OUTPUT ATTENUATION softkey in
the AMPT menu.
The input field for selecting the output level will open.
The output level is set by selecting an attenuation
value (0 dB to 50 dB). If you select 0 dB, the output
level will be 0 dBm. If you select 50 dB, the output level
will be –50 dBm.
Using the numeric keys, the rotary knob or the
cursor keys, define the attenuation value you want.
Measuring the transmission of two-ports
To perform a transmission measurement, connect the input of the DUT to the generator output and the
DUT’s output to the RF input of the R&S FSH. The R&S FSH measures the magnitude of the DUT’s
transmission. The operating sequence is explained below using a transmission measurement on a
two-port filter with a center frequency of 2060 MHz and a bandwidth of approx. 11 MHz as an example.
The measurement example starts with the R&S FSH in its default setting.
Setting the frequency range:
Press the PRESET key.
Press the MODE key.
Press the NETWORK ANALYZER softkey.
The R&S FSH displays the tracking generator menu. As calibration has not been performed, UNCAL is
displayed in the upper area of the measurement diagram.
Press the FREQ key.
Using the number keys, enter the center frequency (2060 MHz in this example).
Press the SPAN key.
Using the number keys, enter the span (50 MHz in this example).
Scalar transmission measurement:
Press the MEAS key.
Press the MEAS MODE softkey.
Select SCALAR using the rotary knob and confirm
with either the ENTER key or the MEAS MODE
softkey.
Press the CALIBRATE softkey.
Select NORMALIZE TRANSMISSION FWD
(PORT1 -> 2) using the rotary knob and confirm
with the ENTER key or the CALIBRATE softkey.
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