Agilent Technologies 8510-58 manual Standard Class labels, TRL options, Calibration kit label

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Each adapter is specified as a single delay/thru standard and up to seven standards numbers can be specified into the adapter class.

Standard Class labels

Standard Class labels are entered to facilitate menu-driven calibration. A label can be any user- selected term which best describes the device or class of devices that the operator should connect. Predefined labels exist for each class. These labels are

S11A, S11B, S11C, S22A, S22B, S22C, FWD TRANS, FWD MATCH, REV TRANS, REV MATCH, RESPONSE, FWD ISOLATION, REV ISOLATION, THRU, REFLECT, LINE, and ADAPTER.

The class labels for the WR-62 waveguide calibra- tion kit are as follows; S11A and S22A–PSHORT1; S11B and S22B–PSHORT2; S11C and S22C–PLOAD; FWD TRANS, FWD MATCH, REV TRANS and REV MATCH–PTHRU; and RESPONSE–RESPONSE.

TRL options

When performing a TRL 2-PORT calibration, cer- tain options may be selected. CAL Z is used to specify whether skin-effect-related impedance vari- ation is to be used or not. Skin effect in lossy transmission line standards will cause a frequency- dependent variation in impedance. This variation can be compensated when the skin loss (offset loss) and the mechanically derived impedance (Offset Z0) are specified and CAL Z0: SYSTEM Z0 selected. CAL Z0: LINE Z0 specifies that the imped- ance of the line is equal to the Offset Z0 at all frequencies.

The phase reference can be specified by the Thru or Reflect during the TRL 2-PORT calibration. SET REF: THRU corresponds to a reference plane set by Thru standard (or the ratio of the physical lengths of the Thru and Line) and SET REF: REFLECT cor- responds to the Reflect standard.

LOWBAND FREQUENCY is used to select the mini- mum frequency for coaxial TRL calibrations. Below this frequency (typically 2 to 3 GHz) full 2-port calibrations are used.

Note

The resultant calibration is a single cal set combining the TRL and conventional full 2-port calibrations. For best results, use TRM calibration to cover frequencies below TRL cut-off frequency.

Calibration kit label

A calibration kit label is selected to describe the connector type of the devices to be measured. If a new label is not generated, the calibration kit label for the kit previously contained in that calibration kit register (CAL 1 or CAL 2) will remain. The pre- defined labels for the two calibration kit registers are:

Calibration kit 1

Cal 1

Agilent 85050B

 

7-mm B.1

 

Calibration kit 2

Cal 2

Agilent 85052B

 

3.5-mm B.1

 

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Contents Product Note 8510-5B Table of contents Measurement calibration Measurement errorsIntroduction Calibration kit Standard definition Class assignmentStandard definitions table Standard class assignments Modification procedure Select standardsDefine standards Standard definition modelsOpen circuit capacitance C0 , C1 , C2 and C3 Standard numberStandard type ΠfX ΠfZ∆∅radians = 2πf ∆length Short circuit inductance L0 , L1, L2 and L3Offset delay Delay seconds =Fixed or sliding Terminal impedanceLinear delay Actual delay = Fco/f2 Offset Z0Offset loss 1GHz =1GHz c Z0 10 log10e εrLower/minimum frequency Upper/maximum frequency Fupper = 2 x FlowerCoax or waveguide ∅radians =Standard Classes Assign classesStandard labels S11 A,B,C and S22 A,B,C Forward transmission match and thruReverse transmission match and thru IsolationTRL Thru TRL ReflectTRL Line TRM ThruCalibration kit label Standard Class labelsTRL options Enter standards/classes Verify performanceUser modified cal kits and Agilent 8510 specifications Modification examplesModeling a thru adapter Modeling an arbitrary impedance standardAppendix a Calibration kit entry procedure Disk procedureTo load calibration kits from disk into Agilent To store calibration kits from the Agilent 8510 onto a diskFront panel procedure P-band waveguide example Pshort Type-N coaxial connector interface Appendix B Dimensional considerations in coaxial connectorsMm coaxial connector interface Mm Coaxial connector Type-N coaxial connector interface Female type-NPage Appendix C Cal coefficients model EquationTheir first order approximations, R is small and G=0, are Then Online assistance Phone or Fax United States
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