Agilent Technologies L4400 Guide de l'utilisateur télécharger pdf (Page 263)

L4451A and L4452A Calibration Procedures A

L4400 User’s Guide 251

6 Send the command CALibration:SECure:STATe ON to activate the new

code and secure the instrument.

7 Turn off the instrument and re- install the instrument sub- assembly

into the instrument carrier. Turn on the instrument.

Continue with the procedures for calibrating the instrument. Note that

the instrument will first have to be unsecured using the new security

code set in Step 5.

Calibration Message

The instruments allow you to store a message in calibration memory. For

example, you can store such information as the date when the last

calibration was performed, the date when the next calibration is due, the

instrument’s serial number, or even the name and phone number of the

person to contact for a new calibration.

• You can record a calibration message only when the instrument is

unsecured. You can read the calibration message whether the

instrument is secured or unsecured.

• The calibration message may contain up to 40 characters.

• Calibration Message Commands:

CALibration:STRing “<string>”

CALibration:STRing?

Calibration Count

You can query the L4451A and L4452A to determine how many

calibrations have been performed. Note that your instrument was

calibrated before it left the factory. When you receive your instrument,

be sure to read the count to determine its initial value.

• The calibration count increments up to a maximum of 2

- 1 after

which it rolls over to “0”. Since the value increments by one for each

calibration point, a complete calibration may increase the value by

many counts.

• Calibration Count Command:

CALibration:COUNt?

1 2 ... 258 259 260 261 262 263 264 265 266 267 268 ... 280 281

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Agilent Technologies L4400 Guide de l'utilisateur Page 263