Martel Electronics LC100 User Manual

Page 14

3) Press the

key once for the step

mode, twice for the slow ramp mode and
three times for the fast ramp mode. With
each press a small annunciator will appear
on the lower left side of the LCD indicating
which one of the step/ramp modes has been
selected.

4) Once enabled the step/ramp mode will run

continuously until another key is pressed.

B. Percent Error Mode

This unique feature will calculate error as a per-
centage of span (4 mA to 20 mA yields a 16 mA
span). The percent error feature allows the
user to “Zero Out” the %mA display so that the
deviation from the ideal value can be displayed
on the % error display. The procedure is as fol-
lows:

1) Connect the LC100 to the unit under test.

2) Place the LC100 in one of the mA output

modes (source or simulate).

3) Adjust the LC100 to the desired output.

4) If the unit under test does not read exactly as

it should, hold down the

key and

adjust the knob unit until the unit under test
reads correctly. Continue to hold down the

key.

5) The reading in the % display area will be the

error or deviation calculated as a percentage
of span.

%ERROR

AUTO