H Heuer Instruments UMDT51A, User Manual

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Adjustment procedures
LT51 User Manual 79
DC Voltage
To adjust the DC voltage function of the LT51 press the [f2] Volts key.
Toggle the [f2]
Volts key until +50 Vdc is displayed.
Connect a DC Voltage Source of +50.00 V ± 0.05 % to the RTXa-b terminals
with the +ve terminal to the RTXb (red) terminal. When the LT51 measurement
has stabilised press the key to record the
+50.0 Vdc value.
Connect a DC Voltage Source of -50.00 V ± 0.05 % to the RTXa-b terminals with
the +ve terminal to the RTXa (black) terminal. When the LT51 measurement has
stabilised press the key to record the
-50.0 Vdc value.