Specifications

90
Appendix Compensation
3. Electrical Length Compensation
In a single-port (Two-Terminal) impedance measurement at higher frequencies (RF region or higher),
the wavelengths of the electrical signal are so short that the length of the signal transmission line
including the test fixture and cables can cause an undesirable phase shift error. The phase shift
error is corrected by the electrical length compensation, which should be performed in combination
with the open/short compensation.
The following measurement instruments are equipped with electrical length compensation function.
* denotes the instrument is obsolete.
The electrical length is specified for the following test fixtures:
Model Compensation Function
4287A Electrical Length Compensation/Port Extension
4291B* Electrical Length Compensation/Port Extension
4294A + 42942A Electrical Length Compensation/Port Extension
4395A + Option 010 + 43961A Electrical Length Compensation/Port Extension
4396B + Option 010 + 43961A Electrical Length Compensation/Port Extension
E4991A Electrical Length Compensation/Port Extension
Model Electrical Length
16092A 3.4 mm
16192A 11.0 mm
16194A 50.0 mm
16196A 26.2 mm
16196B 26.9 mm
16196C 27.1 mm
16196D 27.3 mm
16197A 14.0 mm
16093-65003 3.4 mm
16093-65004 3.4 mm
16094-65000 23.2 mm
Electrical length of a test fixture
Residual parameters in the measuring circuit