User Manual

Chapter 5 Calibration

1000-DCV DC Volts

Equipment Required:

1. Precision DC voltage source with a resolution to 0.1mV and

an accuracy of ±0.1%

2. Interconnecting copper wire from the DC source to the

indicator.

3. Trimmer adjusting tool.

STEP 1. Disconnect power from the unit and use copper

connecting leads, connect the output of the DC voltage source to

terminals 5 (+) and 6 (-) of the indicator according to the chart on

page 5.

STEP 2. Remove the front panel lens, reconnect power and allow

for a 5-minute warm-up.

STEP 3. Input 0.0 mV from the DC voltage source and adjust the

ZERO pot for a display of 0.0±1 count. (Refer to the figure on page

15 for the location of the zero and span pots).

STEP 4. Input 190.0 mV from the DC voltage source and adjust

the SPAN pot for a reading of 190.0±1 count.

STEP 5. Repeat steps 3 and 4 until no further adjustment is

needed.