Doric Instruments 1000 Pro Series Digital Panel meters are suitable User Manual

Page 26

1 to 5VDC

Equipment Required:

1. Precision DC voltage source with a resolution of 0.1mV DC

and an accuracy of 0.1%.

2. Interconnecting copper wire from the DC voltage source to the

indicator.

3. Trimmer adjusting tool.

STEP 1.

Disconnect power from the unit and remove the front

panel lens.

STEP 2.

Connect the DC voltage source to terminal 3 (+) and

terminal 2 (-) located on the rear of the unit. Reconnect power and
turn the unit on. Allow for a 5-minute warm-up.

STEP 3.

Input 1.0VDC from the DC voltage source and adjust

the ZERO pot for a display reading of 0.0 ± 1 count.

STEP 4.

Input 5.0VDC from the DC voltage source and adjust

the SPAN pot for a reading of 100.0±1 count.

STEP 5.

Repeat steps

3 and

4 until no further adjustment is

needed.