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Two-port measurements with the tracking generator
R&S FSH
1145.5973.12 4.88
E-14
The reference can also be shifted without increasing the input attenuation – for example, in order to
move the trace to the center of the screen. This is done using the REF POSITION function.
Press the AMPT key.
Press the REF POSITION softkey.
Change the reference position using the rotary knob
or the cursor keys, or enter a new reference position
via the numeric keypad.
Confirm the entry with the ENTER key or the REF
POSITION softkey.
In addition, the trace can be offset without changing the reference and the scale of the y axis.
Press the AMPT key.
Press the TRACE OFFSET
softkey.
Change the level offset of the trace using the rotary
knob or the cursor keys, or enter a new offset via the
numeric keypad.
Confirm the entry with the ENTER key or the
TRACE OFFSET softkey.
The trace offset function is useful if it is necessary to compensate for a fixed loss or gain during the
measurement.
Vector transmission measurement
(only with option R&S FSH-K2)
With vector measurements, the R&S FSH analyzes both magnitude and phase of the receive signal,
thus correcting the influence it has on the measurement result by means of the complex correction
values obtained from the calibration routines with correct phase. Reference is made to the calibration
standards used (through connection and 50 termination).
Compared to scalar measurement, the vector transmission measurement yields higher measurement
accuracy and dynamic range. One of the main benefits of vector measurement is that it also lets you
determine the phase, group delay and electrical length of a DUT. These measurements are possible
only after calibration has been performed; they remain disabled (command dimmed) until this is done.
Switching on vector measurement:
Press the MEAS key.
Press the MEAS MODE softkey.
Select VECTOR from the menu using the cursor
keys or the rotary knob.
Confirm your choice with the ENTER key or the
MEAS MODE softkey.
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