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2635A
Users Manual
iv
How the Instrument Processes Output.......................................................... 4-13
Status Registers............................................................................................. 4-14
Instrument Event Register (IER) .............................................................. 4-14
Standard Event Status Register (ESR)...................................................... 4-16
Status Byte Register (STB)....................................................................... 4-17
Computer Interface Command Set................................................................ 4-18
Xmodem File Transfers ................................................................................ 4-18
5 Printer Operations ............................................................................. 5-1
Summary of Printer Operations......................................................................... 5-3
Connecting the Instrument to a Printer.............................................................. 5-3
Configuring for Printer Operations ................................................................... 5-5
Printing Measurement Data and Memory Card Directory................................ 5-6
Problems?...................................................................................................... 5-6
Printing Measurement Results During Scanning.......................................... 5-6
Printing the Review Array ............................................................................ 5-8
Printing the Directory of the Memory Card.................................................. 5-9
6 Modem Operations ............................................................................ 6-1
Summary of Modem Operations ....................................................................... 6-3
Connecting the Modem to a PC for Modem Configuration.............................. 6-4
Configuring the Instrument Modem for Modem Operations ............................ 6-4
Connecting the Modem to an Instrument .......................................................... 6-6
Configuring the Instrument for Modem Operations.......................................... 6-7
Testing the RS-232/Modem Interface ............................................................... 6-8
7 Maintenance ....................................................................................... 7-1
Introduction ....................................................................................................... 7-3
Cleaning............................................................................................................. 7-3
Line Fuse ........................................................................................................... 7-3
Selftest Diagnostics and Error Codes................................................................ 7-4
Performance Tests............................................................................................. 7-4
Accuracy Verification Test........................................................................... 7-7
Channel Integrity Test................................................................................... 7-8
Thermocouple Measurement Range Accuracy Test ..................................... 7-9
Four-Terminal Resistance Test ..................................................................... 7-10
Thermocouple Temperature Accuracy Test.................................................. 7-10
Open Thermocouple Response Test ............................................................. 7-11
RTD Temperature Accuracy Test................................................................. 7-13
RTD Temperature Accuracy Test (Using Decade Resistance Source).... 7-13
RTD Temperature Accuracy Test (Using DIN/IEC 751 RTD)................ 7-14
Digital Input/Output Verification Tests........................................................ 7-15
Digital Output Test ................................................................................... 7-15
Digital Input Test...................................................................................... 7-16
Totalizer Test............................................................................................ 7-17
Totalizer Sensitivity Test.......................................................................... 7-18
Dedicated Alarm Output Test ....................................................................... 7-18
External Trigger Input Test........................................................................... 7-21
Calibration......................................................................................................... 7-21
Variations in the Display................................................................................... 7-22
Service............................................................................................................... 7-22