Cable Loss - Anritsu MS2024B Manual

5-8 Cable Loss

5-8 Cable Loss
The transmission feed line insertion loss test verifies the signal attenuation level of the cable.
This test can be done using the Cable Loss or Return Loss Measurement with a short or an
open connected at the end of the system. The advantage of using the Cable Loss measurement
is that the instrument takes care of the math, and therefore no computations are needed.
Cable Loss is a Return Loss measurement that also takes into consideration that the signal
travels in both directions. Refer to
Procedure
1. If a test port extension cable is to be used, then connect it to the VNA Port 1 connector
on the instrument.
2. Ensure that the instrument is in Vector Network Analyzer mode. Then press the Shift
key and the System (8) key.
3. Press the Application Options soft key. The Meas Menu soft key toggles between Field and
VNA. The active measurement function is underlined.
Press the soft key (if necessary) until Field is underlined, then press the Back key. The
Measure menu now displays field measurement functions.
4. Press the Measure function hard key and then the Measurement Type soft key. From the
Graph Type Selector list box, select Cable Loss and press Enter.
The Measurement Type soft key shows Cable Loss in the soft key face.
5. Press the Freq/Dist function hard key and set the Start Frequency and Stop Frequency.
6. Press the Sweep function hard key and then the Data Points soft key to set the number
of data points (the larger the number of data points, the longer the maximum distance,
at the expense of a slower sweep speed).
7. Press the Shift key, then the Calibrate (2) key.
8. Press the Start Cal soft key and perform a 1-port OSL calibration at the connector or at
end of the extension cable. Follow the instructions on the display.
9. When the Calibration is finished, CAL: ON (OK) should be displayed with the trace data
in the instrument settings summary at the left side of the sweep window, and the trace
should be centered around 0 dB when the short or open is connected.
5-12
"Measure Menu – Single" on page
PN: 10580-00289 Rev. K
Field Measurements
7-15.
Vector Network Analyzer MG