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1. Press and . A Lock indicator will light up on the display, indicating that the
front panel keys are locked. At this point, all keys are disabled except for , ,
and .
2. To unlock the keys, press and again. The Lock indicator will disappear and
all keys will be enabled.
3.8 Digital Voltmeter (DVM)
The power supply provides a built-in digital voltmeter which can measure DC volts in a range
from 0.001 V - 60.000 V. The connectors are on the rear panel. Press and to enable
the DVM. To exit out of the DVM function, press or any other function key.
To measure voltages, connect the leads as shown here:
Figure 8 - DVM connection