Technical data

Contents
U1401A User’s and Service Guide XIII
Setting the display backlight timer 81
Setting the power saving mode 82
5 Application Examples
Source Mode for mA Output 86
Simulation Mode for mA Output 88
Simulating a 2-wire transmitter on a current loop 90
Measuring a Pressure Transducer 92
Zener Diode Test 94
Diode Test 96
Bipolar Junction Transistor (BJT) Test 98
Determining transistor h
fe 102
Junction Field-Effect Transistor (JFET) Switch Test 104
Operational Amplifier Verification 108
Current-to-voltage converter 108
Voltage-to-current converter 110
Integrator: square wave to triangle wave conversion 111
2-Wire Transmitter Verification 113
Frequency Transmitter Verification 115
6 Maintenance
Maintenance 118
General maintenance 118
Battery replacement 119
Recharging the batteries 121
Fuse replacement 122
Troubleshooting 124
7 Performance Tests and Calibration
Calibration Overview 128