Atec Anritsu-MS4640B - Manual (Page 17)

VectorStar™ MS4640B Series MS4644B 40 GHz VNA System Performance
MS4640B Series TDS PN: 11410-00611 Rev. A 17
MS4644B – 12-Term – 36585K K AutoCal
MS4644B 40 GHz Model, with 12-term Calibration, using the 36585K K AutoCal.
MS4644B Measurement Uncertainties
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 > 43 ± 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
Transmission Magnitude Uncertainty
MS4644B with 12-term Calibration using 36585K 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
20 - 40 GHz
Transmission Phase Uncertainty
MS4644B with 12-term Calibration using 36585K 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
20 - 40 GHz
Reflection Magnitude Uncertainty
MS4644B with 12-term Calibration using 36585K AutoCal
0.1
1
10
-40 -35 -30 -25 -20 -15 -10 -5 0
Device Reflection (dB)
Uncertainty (dB)
70 - 300 kHz
0.3 - 10 MHz
10 - 200 MHz
0.2 - 2.5 GHz
2.5 - 20 GHz
20 - 40 GHz
Reflection Phase Uncertainty
MS4644B with 12-term Calibration using 36585K AutoCal
0.1
1
10
100
-40 -35 -30 -25 -20 -15 -10 -5 0
Device Reflection (dB)
Uncertainty (degrees)
70 - 300 kHz
0.3 - 10 MHz
10 - 200 MHz
0.2 - 2.5 GHz
2.5 - 20 GHz
20 - 40 GHz