Agilent Technologies ENA Series User Manual page 89

Source match error (Es)
A source match error is caused because the reflection signal of the DUT reflects at the
signal source and enters into the DUT again. When a certain port is a stimulus port, this
error can be defined as a constant value for each stimulus port because the state of the
signal source switch does not change. The number of source match errors of the
E5070A/E5071A is the number of stimulus ports you use.
Es1 Source match error of port 1
Es2 Source match error of port 2
Source match error of port 3
*1
Es3
*2 Source match error of port 4
Es4
*1.Options 313, 314, 413, and 414 only
*2.Options 413 and 414 only
Load match error (El)
A load match error is caused because part of the signal transmitted in the DUT reflects at a
response port and all of the signal is not measured by the receiver of the response port .
When a certain port is a stimulus port, a load match error is defined for each of the other
ports. Therefore, the number of load match errors of the E5070A/E5071A is the total
number of the combinations of stimulus ports and response ports.
*1 *2 Load match error when port 1 is a stimulus port.
El21, El31 , and El41
Load match error when port 2 is a stimulus port.
*1 *2
El12, El32 , and El42
Load match error when port 3 is a stimulus port.
*1 *1 *2
El13 , El23 , and El43
Load match error when port 4 is a stimulus port.
*2 *2 *2
El14 , El24 , and El34
*1.Options 313, 314, 413, and 414 only
*2.Options 413 and 414 only
Reflection tracking error (Er)
A reflection tracking error is caused because the difference in frequency response between
the test receiver and the reference receiver of a stimulus port in reflection measurement.
This error can be defined as a constant value for each stimulus port because the
combination of the test receiver and the reference receiver of a stimulus port is always the
same. The number of reflection tracking errors of the E5070A/E5071A is the number of
stimulus ports you use.
Er1 Reflection tracking error of port 1
Er2 Reflection tracking error of port 2
Reflection tracking error of port 3
*1
Er3
*2 Reflection tracking error of port 4
Er4
*1.Options 313, 314, 413, and 414 only
*2.Options 413 and 414 only
Chapter 4
Measurement Errors and their Characteristics
Calibration
81