4.21 Continuous Test Function 114
4.21.1 Control Screen Sequence 114
4.21.2 Details of the Setting Process 115
4.22 External DC Bias Setting 118
4.22.1 Control Screen Sequence 118
4.22.2 Details of the Setting Process 119
4.23 Setting the Number of Displayed Digits 120
4.23.1 Control Screen Sequence 120
4.23.2 Details of the Setting Process 121
4.24 Setting for Display 122
4.24.1 Control Screen Sequence 122
4.24.2 Details of the Setting Process 123
4.25 Key Lock Function 124
4.25.1 Turning the Key Lock On and Off 124
Chapter 5 Applications 125
5.1 Example of Comparator Application 125
5.2 Testing High Impedance Elements
127
5.3 Testing an Element in a Circuit
128
5.4 External Interference
129
5.4.1 Countermeasures Against Interference from the
Power Supply Line 129
5.4.2 Countermeasures Against Noise from the Test
Cables 131
5.5 The EXT I/O Connector 132
5.5.1 Pinouts for the EXT I/O Connector 133
5.5.2 Signal Lines for the EXT I/O Connector 134
5.5.3 Circuit Construction and Connections for the EXT I/O
Connector 136
5.5.4 Electrical Characteristics of the Output Signals 137
5.6 Testing Using EXT I/O 138
5.6.1 Normal Testing 138
5.6.2 Continuous Testing From EXT I/O 140
5.7 Supplying DC Bias 145
5.7.1 How to Supply a DC Bias Voltage 145
5.7.2 How to Supply a DC Bias Current 147
5.8 The Residual Charge Protection Function 148
5.9 9442 PRINTER (option)
149
5.9.1 Preparation 149
5.9.2 Connection Method 151
5.9.3 Control Screen Sequence 152
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