Anritsu ML2480B Series - Page 46

3-10 1 GHz Calibrator VSWR Verification Chapter 3 — Performance Verification
3-22 PN: 13000-00164 Rev. K ML248xx, ML249xA MM
33. Calculate the power which will be used in the VSWR calculation (Pvswr) for each resistance using the
resistance values from Step 11, the voltage values from Step 27 and the following equation:
Pvswr for 100 ohms, Pvswr
100
= ______________ (should be a number near 1 mV, 0.001 volts)
Pvswr for 200 ohms, Pvswr
200
= ______________ (should be a number near 1 mV, 0.001 volts)
Pvswr for 300 ohms, Pvswr
300
= ______________ (should be a number near 1 mV, 0.001 volts)
Pvswr for 400 ohms, Pvswr
400
= ______________ (should be a number near 1 mV, 0.001 volts)
34. Calculate the variable M for 100, 300 and 400 ohms using the Power values calculated from Step 33, the
reflection coefficients from Step 19 and the following equations:
= ______________
= ______________
= ______________
Table 3-5. 1 GHz VSWR
Bridge Resistance Calibrator Setting V
1
/ V
COMP1
Setting Measured Value
100 Ω
V
1
with RF Calibrator Off V
1
off=
V
COMP1
with RF Calibrator Off V
COMP1
off=
V
1
with RF Calibrator On V
1
on=
V
COMP1
with RF Calibrator On V
COMP1
on=
200 Ω
V
1
with RF Calibrator Off V
1
off=
V
COMP1
with RF Calibrator Off V
COMP1
off=
V
1
with RF Calibrator On V
1
on=
V
COMP1
with RF Calibrator On V
COMP1
on=
300 Ω
V
1
with RF Calibrator Off V
1
off=
V
COMP1
with RF Calibrator Off V
COMP1
off=
V
1
with RF Calibrator On V
1
on=
V
COMP1
with RF Calibrator On V
COMP1
on=
400 Ω
V
1
with RF Calibrator Off V
1
off=
V
COMP1
with RF Calibrator Off V
COMP1
off=
V
1
with RF Calibrator On V
1
on=
V
COMP1
with RF Calibrator On V
COMP1
on=
Pvswr
2 V1on VCOMP1on× V1off VCOMP1off×–()V1off
2
V1on
2
–+
4 R×
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------=
M100
Pvswr200 1 Γ100
2
–()
Pvswr100 1 Γ200
2
–()
------------------------------------------------------------=
M300
Pvswr200 1 Γ300
2
–()
Pvswr300 1 Γ200
2
–()
------------------------------------------------------------=
M400
Pvswr200 1 Γ400
2
–()
Pvswr400 1 Γ200
2
–()
------------------------------------------------------------=