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SVA1000X User Manual 79
1. Extensions
Please set whether to open the port expansion function according to the actual instrument device.
Close by default.
After opening the port extension function, the "P" icon will be displayed on the right side of the
calibration status in the upper left corner of the screen.
2. Delay Port1
Set the delay of Port1 extension.
The relationship between Port Delay and Port Length is as follows:
Port Length = Port Delay * c0 * Velocity Factor, where c0=299792458m/s
3. Length Port1
Set the length of Port1 extension.
4. Delay Port2
Set the delay of Port2 extension.
5. Length Port2
Set the length of Port2 extension.
6. Auto Open Port1
Automatically calculate the delay and length of Port1.
3.4.6.6
System Z0
Set the System characteristic impedance (Z0).
3.4.6.7
Velocity Factor
Set the velocity factor of the cable to be measured relative to the speed of light in vacuum. Make sure
that the velocity factor of the cable to be measured conforms to the reality.
Table 3-10 Velocity Factor
Parameter
Explanation
Default
0.66
Range
0.1 ~ 1
Unit
N/A
Knob Step
0.01
Direction Key Step
In 1-2-5 sequence