Leprecon LP-250 User Manual
Page 4
TRIM
To adjust the trim of any LEPRECON controller you need a volt meter and a small flat
blade screwdriver. First determine which pin is common with your controller.
The LP-250 has one 8 pin male jones output connector. Channels 1-6 are Pins 1 thru 6,
Pin 7 has a 28 volt DC supply and the common pin is number 8.
On the LP-255 there are two 8 pin jones connectors. The first connector has channels
1-6 on pins 1-6. The second connector has channels 7-12 on pins 1-6. Pin 7 has 28
volts DC on both connectors. Pin 8 is common.
With your volt meter’s negative lead connected to the controller’s common pin and the
positive lead connected to channel number One, raise all channels to maximum. With
all channels up adjust the “max” trim to the desired level. Factory adjustment is 10 volts.
To adjust the minimum voltage, bring only channel One down. (All other channels must
remain at maximum output.) With the screwdriver in the “min” pot adjust the output
voltage to desired minimum. (Factory adjust is “0” volts.) Once the trim has been
adjusted it should not need to be readjusted unless dimmers with different trim
requirements have been introduced.