U1253B User’s and Service Guide XIX
List of Figures
Figure 1-1 Tilt-stand at 60° 3
Figure 1-2 Tilt-stand at 30° 4
Figure 1-3 Tilt-stand at hanging position 5
Figure 1-4 U1253B keypad 8
Figure 1-5 Connector terminals 25
Figure 1-6 Rear panel of U1253B 27
Figure 2-1 Measuring AC voltage 31
Figure 2-2 Measuring DC voltage 32
Figure 2-3 Measuring
μA and mA current 34
Figure 2-4 Measurement scale of 4 mA to 20 mA 36
Figure 2-5 A (ampere) current measurement 37
Figure 2-6 Measuring frequency 39
Figure 2-7 Type of display when Smart
Ω is enabled 41
Figure 2-8 Measuring resistance 42
Figure 2-9 Resistance, audible continuity, and conductance
tests 43
Figure 2-10 Short continuity and open continuity test 45
Figure 2-11 Conductance measurement 46
Figure 2-12 Measuring the forward bias of a diode 48
Figure 2-13 Measuring the reverse bias of a diode 49
Figure 2-14 Surface temperature measurement 53
Figure 2-15 Input terminal warning 55
Figure 2-16 Charge terminal alert 56
Figure 3-1 Dynamic recording mode operation 59
Figure 3-2 Data hold mode operation 61
Figure 3-3 Refresh hold mode operation 63
Figure 3-4 Null (relative) mode operation 65
Figure 3-5 dBm display mode operation 67
Figure 3-6 dBV display mode operation 68
Figure 3-7 1 ms peak hold mode operation 70
Figure 3-8 Manual (hand) logging mode operation 72
Figure 3-9 Full log 72
Figure 3-10 Interval (time) logging mode operation 74
Figure 3-11 Log review mode operation 76
Figure 3-12 Frequency adjustment for square wave output 78
Figure 3-13 Duty cycle adjustment for square wave output 79
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