Agilent Technologies 87075C manual Introduction, Test Set Cal and SelfCal

Test Set Cal and SelfCal

Introduction

Introduction

This chapter presents information on the following topics:

•Test Set Cal: An Overview

•Test Set Cal and SelfCal: Theory of Operation

Measurement calibration is a process that improves measurement accuracy by using error correction arrays to remove systematic measurement errors. By implementing the Test Set Cal and SelfCal features on your multiport system, you can increase the accuracy of your measurements and increase the throughput of your multiport measurements by eliminating frequent and lengthy calibration procedures.

Cal Type	What is it?	When to do it?
Test Set	A full calibration of the	When you first set
Cal	multiport test system.	up your test
	Requires connections of	system. Thereafter,
	external calibration	about once a month
	standards.	if within the
		specified
		temperature range.
SelfCal	An internally automated	Set SelfCal to
	calibration technique.	execute
	Uses solid-state switches	automatically as
	to measure calibration	often as needed
	standards located inside	(typically once an
	the test set.	hour).

Test Set Cal

A Test Set Cal is a calibration that should be performed when you first set up your test system and thereafter on a regular, but relatively infrequent basis. The time interval between Test Set Cals is dependent mainly on temperature. If the operating temperature of the analyzer and test set is within the specified range, the recommended time interval is about once a month. A Test Set Cal requires you to connect calibration standards to all of the ports to be used.

See “Test Set Cal: An Overview” to learn how to perform a Test Set Cal.

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