Troubleshooting guide

Resistor Values

DMP Command Processor™ panels use resistors of different values to control different

system voltages, such as zone voltages and bell supervision voltages. Resistor values used

with DMP equipment-

1,000 Ohm (1KΩ)

Panel zones 1-8 *, all Model 711 and 714 zone expanders, all DMP

keypad zones

3,300 Ohm (3.3KΩ)

Panel zones 9 & 10, all Model 715 zone expanders

6,800 Ohm (6.8KΩ)

Model 725 zone expanders

10,000 Ohm (10KΩ)

XR500 Bell Output (terminals 5 & 6), all Model 866 & 867 Bell

Supervision Modules

* TECH NOTE: DMP XR6, XR10, XRSuper6, XR20 and XR40 Command Processors™ use

1KΩ resistor for zones 1 - 9.

How to Determine Resistor Value

Resistor values can be determined by the color code on the resistor.

With the Gold or Silver band positioned to the right

, look at the other color-bands from left

to right.

The first color-band on the left determines the first number of the resistor's value and the

second color-band determines the second number of the resistor's value.

The third color-band tells us how many zeros to put behind the first two numbers.

The last band (either Gold or Silver) represents the resistor's tolerance, meaning that the

actual resistance can vary above or below the value indicated by the color code.

NOTE: The resistor shown above has:

Brown (= 1), Black (= 0), Red (= 2) and Gold(+/- 5%).

So this resistor has a value of 1,000 Ohms.

-NOTES-

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