Technical data

Calibration Procedures 1
Basic Operating Test
U1270 Series Service Guide 23
For U1271A/U1272A models:
Check that all the annunciators are displayed on the LCD
screen. Compare the display with the example shown in
Figure 1- 2. Press any key to exit this mode.
Figure 1-2 U1271A/U1272A LCD screen
Current terminal input test
This test determines if the input warnings of the current
terminals are functioning properly.
Input warning test (A terminal)
The multimeter sounds a continuous alert beep when the
test lead is inserted into the A terminal but the rotary
switch is not set to the function.
The multimeter displays an input warning error (Figure 1- 3).
Figure 1-3 Input warning display (A terminal)