Agilent Technologies ENA Series User Manual page 90

Calibration
Measurement Errors and their Characteristics
Transmission tracking error (Et)
A transmission tracking error is caused because the difference in frequency response
between the test receiver of a response port and the reference receiver of a stimulus port in
transmission measurement. When a certain port is a stimulus port, a transmission tracking
error is defined for each of the other ports. Therefore, the number of transmission tracking
errors of the E5070A/E5071A is the total number of the combinations of stimulus ports and
response ports.
*1 *2
Et21, Et31 , and Et41
*1 *2
Et12, Et32 , and Et42
*1 *1 *2
Et13 , Et23 , and Et43
*2 *2 *2
Et14 , Et24 , and Et34
*1.Options 313, 314, 413, and 414 only
*2.Options 413 and 414 only
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Transmission tracking error when port 1 is a stimulus port.
Transmission tracking error when port 2 is a stimulus port.
Transmission tracking error when port 3 is a stimulus port.
Transmission tracking error when port 4 is a stimulus port.
Chapter 4