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Figure 7: transmission uncertainty, Figure 8: reflection uncertainty – Atec Agilent-N9923A User Manual

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Corrected measurement uncertainty, 1- or 2-port QuickCal,
low port power

Applies to N9923A with option 112, QuickCal with load, IF bandwidth = 300 Hz,
no averaging, 1-port female DUT, or 2-port female-female DUT, data based on low
port power of -40 dBm , 2-port QuickCal requires option 122, typical performance.

Corrected performance
2 MHz to 4 GHz

Corrected performance
>4 GHz to 6 GHz

Directivity

38 dB

38 dB

Source match

33 dB

23 dB

Load match

37 dB

35 dB

Transmission tracking ±0.04 dB

±0.09 dB

Reflection tracking

±0.06 dB

±0.06 dB

0.1

1

10

100

-40

-30

-20

-10

0

10

20

30

40

Uncertainty (deg)

Device Transmission Magnitude, |S21|, (dB)

Transmission Phase Uncertainty (S11=S22=0)

2MHz to 4 GHz

4 GHz to 6 GHz

Figure 7: Transmission uncertainty

1

10

100

1000

-40

-35

-30

-25

-20

-15

-10

-5

0

Uncertainty (deg)

Device Reflection Magnitude, |S11|, (dB)

Reflection Phase Uncertainty (S21=S12=0)

2MHz to 4 GHz

4 GHz to 6 GHz

Figure 8: Reflection uncertainty

0.01

0.1

1

10

-40

-30

-20

-10

0

10

20

30

40

Un

c

e

rt

a

in

ty

d

B

)

Device Transmission Magnitude, |S21|, (dB)

Transmission Magnitude Uncertainty (S11=S22=0)

2MHz to 4 GHz

4 GHz to 6 GHz

0.1

1

10

-40

-35

-30

-25

-20

-15

-10

-5

0

Uncertainty (dB)

Device Reflection Magnitude, |S11|, (dB)

Reflection Magnitude Uncertainty (S21=S12=0)

2MHz to 4 GHz

4 GHz to 6 GHz