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2. Press Cal key.
3. Click Velocity Factor, then the velocity factor in the data entry area.
Port Extensions and Loss Values
Setting port extensions
Port Extension is a function for moving the calibration reference plane by
specifying the electrical delay. This function is useful, for example, when
you cannot directly perform calibration at the DUT terminal because the
DUT is inside the test fixture. In such a case, this function enables you to
first perform calibration at the test fixture terminal and then move the
calibration plane to the DUT terminal by extending the port.
Port extension corrects the electrical delay of each test port (phase shift)
only. It cannot remove errors caused by the loss in and incorrect matching
of cables, adapters, or test fixtures.
• You can define port extension channel by channel. Setting port
extension for one particular channel does not affect other
channels.
• Auto Port Extension does not supports waveguide port
extension.
Operational procedure
1. Press Channel Next/Channel Prev keys to activate the channel for
which you want to set port extension.
2. Press Cal key.
3. Click Port Extensions, and then Select Extension Port 1/2/3/4.
4. Specify Loss values by clicking Loss.
Setting coaxial delay, waveguide delay and cut off frequency
Follow the steps below to set coaxial or waveguide delay:
1. Press Channel Next/Channel Prev keys to activate the channel for
which you want to set port extension.
2. Press Cal key.
3. Click Port Extensions.
Softkey Function
Auto Port
Extension
Sets the Auto Port Extension
Extension Port 1
Sets port extension (in seconds) for test
port 1.
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