Agilent MOI for MHL Cables Compliance Tests
5.3. Calibration
5.3.1. Time Domain Calibration
The purpose of this step is to calibrate the delay and loss of the RF cables (and test fixtures)
by following the wizard of the ENA option TDR software. Full calibration is performed by
using the 4-port ECal Module at the end of RF cables connected to the ENA test ports.
After connecting the test fixture to the cables, the effect of the fixture is removed by the
fixture compensation function of the TDR software. This calibration is applied for
time-domain measurements in Channel 1.
5.3.1.1.
Calibration for time-domain measurements (except CBUS Line Capacitance) is performed
by the TDR software. The 4-port ECal Module (i.e. N4431B) connected to the E5071C is
necessary for the calibration procedure.
1. Press
Channel Next
2. Open
Setup
tab of the TDR software.
3. Click
ECal
to launch calibration wizard.
4. Connect all test cables to the ECal Module and click Calibrate. Once green check
mark appears, click Next>.
ECal Calibration & Fixture Compensation
to select Channel 1.
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