4
3.6 DIODE MEASUREMENTS ............................................................................................. 43
3.7 TEMPERATURE MEASUREMENTS ................................................................................44
3.7.1 Thermocouple Measurements ...........................................................45
3.7.2 RTD Measurements............................................................................... 45
3.7.2.1 2-Wire RTD Measurements..................................................................45
3.7.2.2 3-Wire RTD Measurements..................................................................47
3.7.2.3 4-Wire RTD Measurements..................................................................49
4 FRONT PANEL OPERATIONS......................................................................................52
4.1 MEASUREMENT CONFIGURATION ..............................................................................52
4.1.1 Set ADC (Auto Zero).............................................................................52
4.1.2 Filter............................................................................................................55
4.1.2.1 AC Filter ......................................................................................................55
4.1.2.2 Digital Filter..................................................................................................56
4.1.3 Resolution Setting (Digits)................................................................. 58
4.1.4 DC Input Resistance..............................................................................60
4.1.5 Threshold Resistance (Continuity)...................................................62
4.1.6 Range (Manual & Auto)........................................................................63
4.1.7 Rate (Integration Time).......................................................................64
4.1.8 SensorSelectionfor Temperature Measurements......................................... 66
The default sensor type, units and transducer in M3500A is PT100,
℃
and 4W RTD in order..........................................................................................68
4.1.9 Remote Interface Selection................................................................ 70
4.1.10 Input Terminal Switch .......................................................................71
4.2 TRIGGER OPERATIONS ...............................................................................................71
4.2.1 Trigger Mode............................................................................................72
4.2.2 Trigger Source.........................................................................................74
4.2.3 Trigger Setting........................................................................................ 76
4.3 MATH OPERATIONS .................................................................................................... 80
4.3.1 Ratio............................................................................................................81
4.3.2 % (Percent)..............................................................................................82
4.3.3 Min/Max.....................................................................................................83
4.3.4 Null ..............................................................................................................85
4.3.5 Limits Test................................................................................................86
4.3.6 MX+B.......................................................................................................... 88
4.3.7 dB/dBm...................................................................................................... 91
4.4 OTHER SYSTEM RELATED OPERATIONS....................................................................95
