VectorStar™ MS4640A SeriesMicrowave Vector Network Analyzer : Programming the VectorStar Series VNAs : Calibration Component Parameters
 
Calibration Component Parameters
The calibration component parameter values depend on the calibration kit used and the reset status of the instrument. The tables below, starting with Table: Loads and Through-Line Values and ending with Table: SOLX, SSLT, Microstrip, and Waveguide Kit Names and Connectors summarize parameters related to calibration components and list the factory default values for the various connector coefficients and lengths. These values may change if calibration kits are loaded that overwrite them.
A Factory Default using the :SYStem:PRESet:ZERo command restores all connector values to those in the tables below. After the restoration, a Factory Default also performs a Default Default. A Default Default (System Default not set to USER) changes the connector type to the appropriate connector type based on the model number.
The following general calibration component parameters should also be noted:
• A Default Default (System Default not set to USER) will change the Microstrip Kit to 10 Mil.
• A Default Default (System Default not set to USER) will change the Waveguide Kit to WR10.
Loads and Through Lines
The standard values for Loads and Through Lines are listed in the table below.
Loads and Through-Line Values
Type
Parameter
Value
Units
Loads
Impedance
50
Ohms
Resistance
50
Ohms
Through Lines
Impedance
50
Ohms
Length
0
Meters
Loss
0
dB
Frequency
0
Hz
 
Other Connector Coefficients
The default connector coefficients apply if not overwritten by the connector values loaded from a calibration kit.
Default Connector Coefficients
Value
Type
(gender)
Type
(gender)
Type
(gender)
Type
(gender)
Type
(gender)
Type
(gender)
 
Type
(gender)
SMA
(male)
SMA
(female)
K
(male)
K
(female)
N
(male)
N
(female)
OpenC0
23E–15
26E–15
–1.5E–15
–1.0E–15
125.0E–15
65.0E–15
OpenC1
–550E–27
–550E–27
720E–27
650E–27
0.0E–27
0.0E–27
OpenC2
10.0E–36
10.0E–36
–23.0E–36
–23.0E–36
0.0E–36
0.0E–36
OpenC3
0.7E–45
0.5E–45
0.35E–45
0.35E–45
10.0E–45
6.0E–45
OpenOffsetLength
5.0E–3
5.0E–3
5.0E–3
5.0E–3
M DUT = 0.0E–3
F Test Port = 20.3E–3
M Test Port = 8.97E–3
F DUT = 0.0E–1
ShortL0
0
0
0
0
0
0
ShortL1
0
0
0
0
0
0
ShortL2
0
0
0
0
0
0
ShortL3
0
0
0
0
0
0
ShortOffsetLength
5.0E–3
5.0E–3
5.0E–3
5.0E–3
20.37E–3
8.97E–3
 
Type
(gender)
GPC3.5
(male)
GPC3.5
(female)
GPC7
(none)
V
(male)
V
(female)
TNC
(male)
OpenC0
24E–15
24E–15
91E–15
–1.0E–15
0.0E–15
79.0E–15
OpenC1
–425.0E–27
–250.0E–27
–220.0E–27
–275.0E–27
–200.0E–27
0.0E–27
OpenC2
10.0E–36
10.0E–36
75.0E–36
6.25E–36
5.0E–36
40.0E–36
OpenC3
0.6E–45
0.5E–45
1.3E–45
0.0E–45
0.0E–45
0.0E–45
OpenOffsetLength
5.0E–3
5.0E–3
0.0E–3
4.75E–3
4.75E–3
18.05E–3
ShortL0
0
0
0
0
0
0
ShortL1
0
0
0
0
0
0
ShortL2
0
0
0
0
0
0
ShortL3
0
0
0
0
0
0
ShortOffsetLength
5.0E–3
5.0E–3
0.0E–3
5.10E–3
5.10E–3
18.05E–3
Type
(gender)
TNC
(female)
N75
(male)
N75
(female)
7/16
(male)
7/16
(female)
–
OpenC0
79E–15
55.0E–15
23.0E–15
32.0E–15
32.0E–15
–
OpenC1
0.0E–27
0.0E–27
0.0E–27
100.0E–27
100.0E–27
–
OpenC2
40.0E–36
0.0E–36
0.0E–36
–50.0E–36
–50.0E–36
–
OpenC3
0.0E–45
0.0E–45
0.0E–45
100.0E–45
100.0E–45
–
OpenOffsetLength
25.27E–3
0.0E–3
0.0E–3
20.0E–3
20.0E–3
–
ShortL0
0
0
0
0
0
–
ShortL1
0
0
0
0
0
–
ShortL2
0
0
0
0
0
–
ShortL3
0
0
0
0
0
–
ShortOffsetLength
25.27E–3
0.0E–3
0.0E–3
20.0E–3
20.0E–3
–
 
W1 Calibration Kit
A W1 Calibration Kit is slightly different because it has to cover such a wide frequency range.
It has a selection of components to use in a SOLT Calibration that covers the 70 kHz to 70 GHz range. A Male and Female Open and a Male and Female Short with a set of coefficients characterize them over that range.
It has a selection of components to use in an SSST Calibration which covers the 70 kHz to 70 GHz range. Three Male and Female Shorts with a set of coefficients characterize them over that range.
Physically, there are only 3 shorts: ShortX, ShortY, and ShortZ. ShortX has two different sets of coefficients (the offset lengths are the same). The first set of coefficients are good over the 70 kHz to 70 GHz range and the second set of coefficients (referred to as OffsetShort) are good over the 70 GHz to 110 GHz range.
W1 Calibration Kit Connector Parameters
Geometry
W1 Male
W1 Female
OpenC0
9.63E–15
4.43E–15
OpenC1
374.73E–27
–1.109E–27
OpenC2
–4.96E–36
14.65E–36
OpenC3
0.0154E–45
–0.1768E–45
OpenOffsetLength
1.510E–3
1.930E–3
ShortL0
0.98E–12
0.98E–12
ShortL1
2.48E–24
2.48E–24
ShortL2
–1.02E–33
–1.05E–33
ShortL3
0.0164E–42
0.0164E–42
ShortOffsetLength
2.020E–3
2.020E–3
OffsetShort1L0
–4.1930E–12
3.13E–12
OffsetShort1L1
1308.5E–24
–971.86E–24
OffsetShort1L2
–25.1370E–33
25.010E–33
OffsetShort1L3
0.1282E–42
–0.1464E–42
OffsetShort1OffsetLength
2.020E–3
2.020E–3
OffsetShort2L0
0.9450E–12
–2.13E–12
OffsetShort2L1
544.52E–24
1117.4E–24
OffsetShort2L2
–12.32E–33
–20.4450E–33
OffsetShort2L3
0.0724E–42
0.0968E–42
OffsetShort2OffsetLength
2.650E–3
2.650E–3
OffsetShort3L0
3.0800E–12
–0.0018E–12
OffsetShort3L1
–106.12E–24
–150.2460E–24
OffsetShort3L2
3.50E–33
3.1380E–33
OffsetShort3L3
–0.0218E–42
–0.0107E–42
OffsetShort3OffsetLength
3.180E–3
3.180E–3
 
Sliding Load Cutoff Frequency
The general sliding load frequency parameters are:
• The V, 2.4mm and W1 connector sliding load cutoff frequency is 4.0E9 Hz.
• Any other connector sliding load cutoff frequency is 2.0E9 Hz.
Sliding Load Cutoff Frequency
Connector
Sliding Load Cutoff Frequency
–
–
V
4.0E9 Hz
–
–
2.4mm
4.0E9 Hz
–
–
W1
4.0E9 Hz
–
–
Other Connectors
2.0E9 Hz
–
–
Microstrip Kit Common Values
The following microstrip kit values are set.
MIcrostrip Calibration Kit Common Values
Parameter
Value
–
–
Microstrip Default Impedance
50 Ohms
–
–
Microstrip Substrate Dielectric
9.96
–
–
Microstrip Effective Dielectric
6.69
–
–
 
Microstrip Kit Dimensions
Parameter
10 Mil
15 Mil
25 Mil
Microstrip Thickness
0.254E–3
0.381E–3
0.635E–3
Microstrip Width
0.23876E–3
0.35814E–3
0.5969E–3
 
Waveguide Frequencies and Lengths
Parameter
WR10
WR12
WR15
Cutoff Frequency
59.0143E9
48.3723E9
39.8766E9
SHORT1 Offset Length
2.537E–3
2.654E–03
2.793E–03
SHORT2 Offset Length
3.612E–3
3.963E–3
4.380E–3
SHORT3 Offset Length
0
0
0
* The WR10, WR12 and WR15 values are valid for the SSLT calibration method only. All values are zero for the SSST calibration method.
 
 
SOLX, SSLT, Microstrip, and Waveguide Kit Names and Connectors 
Kit Name
Defined Connectors
User-Defined Connectors
SOLX Kit
2.4 mm
GPC-3.5
K-Conn
N-Conn
SMA
TNC
V-Conn
W1-Conn
0.8 mm Conn
7/16
GPC-7
N-Conn(75)
User-Defined1
User-Defined2
User-Defined3
User-Defined4
User-Defined5
User-Defined6
User-Defined7
User-Defined8...(up to and including User-Defined32)
SSLT Kit
W1-Conn
0.8 mm Conn
User-Defined1
User-Defined2
User-Defined3
User-Defined4
User-Defined5
User-Defined6
User-Defined7
User-Defined8...(up to and including User-Defined32)
Microstrip Kit
10-Mil-Kit
15-Mil-Kit
25-Mil-Kit
User-Defined1
User-Defined2
User-Defined3
User-Defined4
User-Defined5
User-Defined6
User-Defined7
User-Defined8...(up to and including User-Defined32)
Waveguide Kit
WR10
WR12
WR15
User-Defined1
User-Defined2
User-Defined3
User-Defined4
User-Defined5
User-Defined6
User-Defined7
User-Defined8...(up to and including User-Defined32)