Keysight U1270 Series Service Guide 13
List of Figures
Figure 1-1 U1273A/U1273AX OLED display screen . . . . . . . . . . .21
Figure 1-2 U1271A/U1272A LCD screen . . . . . . . . . . . . . . . . . . .22
Figure 1-3 Input warning display (A terminal) . . . . . . . . . . . . . . . .22
Figure 1-4 Input warning display (µA mA terminal) . . . . . . . . . . .23
Figure 1-5 Unsecuring the instrument . . . . . . . . . . . . . . . . . . . . .36
Figure 1-6 Changing the calibration security code . . . . . . . . . . . .37
Figure 1-7 Resetting the calibration security code . . . . . . . . . . . .38
Figure 1-8 Reference value display . . . . . . . . . . . . . . . . . . . . . . . .45
Figure 2-1 Testing Fuse 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Figure 2-2 Testing Fuse 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Figure 2-3 Replacing Fuse 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Figure 2-4 Replacing Fuse 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Figure 2-5 Positions of Fuse 1 and Fuse 2 . . . . . . . . . . . . . . . . . .58