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Fluke 1502A 7.3.5 Calibration Commands, 7.3.6 Other Commands

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LF=OF<EOS> disables linefeed

7.3.5 Calibration Commands

The following commands are used in calibrating the instrument.

7.3.5.1 Entering the Password

In order to setthe calibration parameters the password must be issued first. The

followingcommand enables access to the calibration parameters:

*PA=2051<EOS> enables the calibration commands

Calibration parameters can be lockedout again by sending *PA=0 or by cycling

the power.

7.3.5.2 Setting the Menu Lockout

The followingcommands can be used to select the menu lockout options:

*LO=CA<EOS> locks out only the calibration menu

*LO=AL<EOS> locks out all menus

7.3.5.3 Setting the Calibration Coefficients

The instrument calibration coefficients are used to maintain the resistance mea-

surement accuracyof the 1502A. These coefficients must not be changed ex-

cept by aqualified technician during the calibration of the 1502A. The

following commands can be used to set the instrument calibration coefficients:

*C0=<value><EOS> sets the calibration parameter CAL0

*C1=<value> <EOS> sets the calibration parameter CAL100

*C4=<value><EOS> sets the calibration parameter CAL400

7.3.5.4 Setting the Serial Number

The followingcommand is used to set the serial number of the 1502A:

*SN=<value><EOS> sets the instrument’s serial number

7.3.6 Other Commands

Remaining commands are described below.

7.3.6.1 Instrument Identification

The followingcommand returns the model number and firmware version

number:

*VER<EOS> returns the model and firmware version numbers

The syntax of the response isas follows:

1502A Thermometer Readout

User’s Guide

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Contents

Main Rev. 722101 Table of Contents 7 Digital Communications Interface . . . . . . . . . . . . . . . 23 ii 7.3 Remote Commands . . . . . . . . . . . . . . . . . . . . . . . . . 26 8 Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . 35 Page Page 1 Before You Start 1.1 Symbols Used 1.2 Safety Information 1.2.1 Warnings 1.2.2 Cautions 1.3 Authorized Service Centers Page 2 Introduction 3 Specifications and Environmental Conditions 3.1 Specifications 9 3 Specifications and Environmental Conditions Specifications 3.2 Environmental Conditions 4 Quick Start 4.1 Unpacking 4.2 Power 4.3 Connecting the Probe Page 5 Parts and Controls 5.1 Front Panel Buttons 84.981 C 5.2 Rear Panel l 6 General Operation 6.1 Selecting Units 6.2 Parameter Menus 6.3 Menu Lockout Page 6.4 Selecting the Probe Characterization E -04 6.4.3 ITS-90 PRT and Coefficients Page [] () [] 6.4.4 Callendar-VanDusen (RTD) Conversion The RTDconversion uses the Callendar-VanDusen equation: 6.4.5 IPTS-68 Conversion A4 +4.336079 E -04 6.5 Filtering 6.6 Setting the Current 6.7 Power Saver 7 Digital Communications Interface 7.1 Serial Interface 7.1.1 Setting the Baud Rate 7.1.2 Automatic Transmission of Measurements 7.1.3 Time Stamp and System Clock 7.1.4 Duplex Mode and Linefeed 7.2 GPIB Interface 7.2.1 Setting the Address 7.2.2 Setting the Termination Character 7.2.3 Time Stamp 7.3 Remote Commands 7.3.1 Measurement Commands 27 7 Digital Communications Interface Remote Commands Table 6 Command List Page 7.3.2 Probe Characterization Commands 7.3.3 Sample Commands 7.3.4 Communication Commands 7.3.5 Calibration Commands 7.3.6 Other Commands Page 8 Calibration Procedure 8.1 Accessing the Calibration Parameters 8.2 Calibration Procedure 9 Maintenance 10 Troubleshooting 10.1 CE Comments 10.1.1 EMC Directive 10.1.2 Low Voltage Directive (Safety)