U1271A/U1272A User’s Guide 19
List of Tables
Table 1-1 Battery level indicator 25
Table 1-2 Power-on options 32
Table 1-3 Front panel parts 35
Table 1-4 Rear panel parts 36
Table 1-5 U1271A rotary switch functions 38
Table 1-6 U1272A rotary switch functions 39
Table 1-7 Keypad functions 42
Table 1-8 General annunciators 45
Table 1-9 Measurement units display 49
Table 1-10 Analog bar graph display 50
Table 1-11 Terminal connections for different measuring
functions 52
Table 2-1 Threshold resistance values 74
Table 2-2 Auto-diode voltage thresholds 84
Table 2-3 % Scale measurement range 99
Table 3-1 Available scale conversions 110
Table 3-2 Data logging maximum capacity 116
Table 3-3 Event log trigger conditions 120
Table 4-1 Setup menu key functions 126
Table 4-2 Setup menu item descriptions 128
Table 4-3 Filter (LPF) options 132
Table 4-4 Firmware version 2.00 or older 132
Table 4-5 Firmware version 2.04 or newer 132
Table 5-1 DC specifications 158
Table 5-2 U1271A true rms AC voltage specifications 161
Table 5-3 U1271A true rms AC current specifications 162
Table 5-4 U1272A true rms AC voltage specifications 163
Table 5-5 U1272A true rms AC current specifications 164
Table 5-6 U1272A true rms AC+DC voltage specifications 165
Table 5-7 U1272A true rms AC+DC current specifications 166
Table 5-8 Capacitance specifications 167
Table 5-9 Temperature specifications 168
Table 5-10 Frequency specifications 169
Table 5-11 Duty cycle and pulse width specifications 169
Table 5-12 Duty cycle and pulse width calculation example 170
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