Agilent 478A Sensors: Additional Information - Agilent Technologies E4416A Service Manual

Agilent 478A Sensors: Additional Information

The Voltage Reflection Coefficients (VRC) of the Agilent 478A sensor must be
known before attempting to perform the Output Standing Wave Ratio (SWR)
Test. The VRC values required for this test are as follows:
• Frequency 50 MHz, with the mount resistance of the Agilent 432A set to 200
(recorded as
• Frequency 50 MHz, with the mount resistance of the Agilent 432A set to 100
(recorded as
For reference only, typical values of these VRC values are as follows:
Γ
•
1
Γ
•
2
Using incorrect VRC values in the Output SWR calculations will introduce significant
N O TE
errors.
E4416A/E4417A Power Meters Service Guide
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Agilent 432A Power Meters & 478A Sensors: Additional Information
Γ
).
1
Γ
).
2
≅
0.0012
≅
0.3317
A
A-129