User guide

Cable Loss (1 Port) Measurement

This one-port reflection measurement measures the insertion loss of a cable. To

measure cable loss, make sure that the cable being tested is not terminated (not

connected to anything at the far end).

1. Ensure that the correct adapters, connectors, and a Bird Calibration Combi-

nation (cal combo) are used. The frequency band of the system will also be

needed.

2. If necessary, connect a phase-stable cable to the test port and

connect a Cal Combo to the other end of the cable.

3. Calibrate the SignalHawk. See “Calibrate Menu” on page 27.

Note: After calibration, with the load still connected, the output

must be below -25 dB. If it is not, there is a problem.

4. Remove the Cal Combo unit from the cable.

Note: Do not disconnect the phase stable cable if used.

5. Connect the cable to be tested to the phase stable cable or test port.

6. Connect Short calibration standard or Short connection on the Cal Combo

unit to the other end of the cable being tested.

Note: The cable loss as a function of frequency is displayed as the

average cable loss displayed in the footer.

Figure 43 Example Cable Loss

Measurement

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