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525B
Users Manual
ii
Thermocouple Zero Calibration ........................................................... 3-4
Measuring Temperature Using Resistance Temperature
Detectors (RTDs) ...................................................................................... 3-5
Entering and Using Custom RTDs ........................................................... 3-7
Default RTD Coefficients ......................................................................... 3-8
Entering Custom SPRT Coefficients ........................................................ 3-9
Measuring Pressure ................................................................................... 3-10
4 Remote Operation ............................................................................. 4-1
Introduction ..................................................................................................... 4-1
Setting up the RS-232 Port for Remote Control .............................................. 4-2
RS-232 Port Setup Procedure ................................................................... 4-2
Testing the RS-232 Port ....................................................................... 4-2
RS-232 Interface Overview ............................................................................. 4-5
Setting up the IEEE-488 Port for Remote Control .......................................... 4-5
IEEE-488 Port Setup Procedure ............................................................... 4-7
Testing the IEEE-488 Port ........................................................................ 4-7
Changing Between Remote and Local Operation ........................................... 4-8
Local State ................................................................................................ 4-8
Local with Lockout State .......................................................................... 4-8
Remote State ............................................................................................. 4-8
Remote with Lockout State ....................................................................... 4-9
IEEE-488 Interface Overview ......................................................................... 4-10
Using Commands ............................................................................................ 4-13
Types of Commands ................................................................................. 4-13
Device-Dependent Commands ............................................................. 4-13
Common Commands ............................................................................ 4-13
Query Commands ................................................................................. 4-14
Interface Messages (IEEE-488) ............................................................ 4-14
Compound Commands ......................................................................... 4-16
Overlapped Commands ........................................................................ 4-16
Sequential Commands .......................................................................... 4-17
Commands for RS-232 Only ................................................................ 4-17
Commands for IEEE-488 Only ............................................................ 4-17
Command Syntax ...................................................................................... 4-18
Parameter Syntax Rules ........................................................................ 4-18
Extra Space or Tab Characters ............................................................. 4-19
Terminators .......................................................................................... 4-19
Incoming Character Processing ............................................................ 4-20
Response Message Syntax .................................................................... 4-20
Checking 525B Status ..................................................................................... 4-21
Serial Poll Status Byte (STB) ................................................................... 4-23
Service Request (SRQ) Line ................................................................ 4-23
Service Request Enable Register (SRE) ............................................... 4-24
1.888.610.7664 sales@GlobalTestSupply.com
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