Omega Vehicle Security DRF-POT Signal Adjustment, Selection Jumpers Output Signal Range, See next

User’s Manual DRF Series

SIGNAL ADJUSTMENT

To proceed to adjust a range of input and output signals, first select with the appropriate jumpers, the signal ranges

which include your desired adjustment. Then proceed to the adjustment.

Selection Jumpers : Output Signal Range

SELECTIONJUMPERS OUTPUT SIGNAL

SPANP OTENTIOMETER

OFFSET POTENTIOMETER

0/20mA 0/10Vdc 0/1Vdc (4/20mA)

SELECTIONJUMPERS

I NPUT SIGNAL	Selection Jumpers : Input Signal Range
	(See next page)

FIGURE 3

F RONT VIEW

WITHOUT COVER

AdjustmentExampleformodelDRF-POT

1.- Connect potentiometer to input

terminals (8 «term+», 9 «term-» and 7 «signal»)

2.- Connect a multimeter to the output signal terminals (4 and 5 for mA or 4 and 6 for

Vdc).

(Values in brackets are examples for a calibration 0/100% = 0/10Vdc)

3.- Input a zero signal (0 %).

Operate offset potentiometer until getting a zero output (0Vdc).

4.- Input the difference between the high and low input levels (100-0=100% Aac).

Operate span potentiometer until

getting an output which is the

difference between the high and low output levels (10-0=10Vdc).

5.- Input low input level (0 %).

Operate offset potentiometer until getting the low level output (0Vdc).

6.- Input high input level and check that

that the output also matches the desired level (100 % =10Vdc).

If more accurate measurement is needed, repeat steps 5 and 6.

Most of the input / output combinations will be properly adjusted within the instrument accuracy after these steps. Close front cover once calibration is

finished.

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