Atec Anritsu-MS4640B User Manual
Page 24
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PN: 11410-00611 Rev. A
MS4640B Series TDS
MS4645B 50 GHz / MS4647B 70 GHz VNA System Performance
VectorStar™ MS4640B Series
MS4645B/MS4647B VNAs – 12-Term – 36585V V AutoCal
MS4645B 50 GHz and MS4647B 70 GHz VNAs, with 12-term Calibration, using the 36585V V AutoCal.
MS4645B/MS4647B Measurement Uncertainties (Transmission)
The graphs give measurement uncertainties after the above calibration. The errors are a worst-case contribution of residual directivity, load and
source match, frequency response and isolation, network analyzer dynamic accuracy, and connector repeatability. 10 Hz IF Bandwidth is used.
For transmission uncertainties, it is assumed that S
11
= S
22
= 0. For reflection uncertainties, it is assumed that S
21
= S
12
= 0. All calibrations and
measurements were performed at 0 dBm or default port power, whichever is less. For other conditions, please use our free Exact Uncertainty
Calculator software, available for download from the Anritsu web site at www.anritsu.com.
Frequency Range
(GHz)
Directivity
(dB)
Source Match
(dB)
Load Match
a
(dB)
a. Since Residual Load Match is limited by Residual Directivity and the user test port cable, it can only be specified as Residual Directivity. For
practical considerations, derate it by approximately 8 dB for a 3670 series test port cable, to compensate for effects such as match,
repeatability, bend radius, and similar parameters.
Reflection Tracking
(dB)
Transmission Tracking
(dB)
70 kHz to 0.01
b
b. Typical performance below 2 MHz.
> 40
> 40
> 40
± 0.10
± 0.10
0.01 to 2.5
> 43
> 47
> 43
± 0.05
± 0.03
2.5 to 20
> 50
> 47
> 50
± 0.09
± 0.03
20 to 40
> 48
> 47
> 48
± 0.14
± 0.07
40 to 65
> 43
> 45
> 43
± 0.17
c
c. ± 0.25 dB from 51 to 55 GHz.
± 0.10
65 to 67
> 43
> 45
> 43
± 0.17
± 0.10
67 to 70
> 42
> 40
> 42
± 0.30
± 0.12
Transmission Magnitude Uncertainty (1 of 2)
MS4647B with a 12-term Calibration using the 36585V AutoCal
0.01
0.1
1
10
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Device Transmission (dB)
Uncertainty (dB)
70 - 300 kHz
0.3 - 10 MHz
10 - 200 MHz
0.2 - 2.5 GHz
2.5 - 20 GHz
Transmission Magnitude Uncertainty (2 of 2)
MS4647B with a 12-term Calibration using the 36585V AutoCal
0.1
1
10
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Device Transmission (dB)
Uncertainty (dB)
20 - 40 GHz
40 - 65 GHz
65 - 67 GHz
67 - 70 GHz
Transmission Phase Uncertainty (1 of 2)
MS4647B with a 12-term Calibration using the 36585V AutoCal
0.1
1
10
100
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Device Transmission (dB)
Uncertainty (degrees)
70 - 300 kHz
0.3 - 10 MHz
10 - 200 MHz
0.2 - 2.5 GHz
2.5 - 20 GHz
Transmission Phase Uncertainty (2 of 2)
MS4647B with a 12-term Calibration using the 36585V AutoCal
0.1
1
10
100
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Device Transmission (dB)
Uncertainty (degrees)
20 - 40 GHz
40 - 65 GHz
65 - 67 GHz
67 - 70 GHz