Ignition Sense Wiring; Overview; Required Kit; Preparation - Motorola CDR500 Programming Manual

Overview

Adding the ignition sense lead to pin 10 of the 16-pin
connectors of the radios will ensure that the repeater
will automatically power-up whenever power is
applied. This is particularly important when the
repeater is mounted in a relatively inaccessible loca-
tion.

Required Kit

The HKKN4000 Repeater Power Sense Cable Kit
allows connecting the 13.6 Vdc output of the repeater
station power supply to the ignition sense input of the
Professional-series radios. Depending upon the
repeater and the repeater controller being used, the
connection of the ignition sense is made to one of the
following:
• Only the repeater controller
• The repeater controller and one of the Profes-
sional-series radios
• Both of the Professional-series radios

Preparation

These steps are common to all of configurations listed
above under "Required Kit".
1. If required, remove the ac line cord of the
repeater from ac mains outlet.
2. If required, remove the repeater housing top
cover of the CDR700 or open the cover of the
CDR500.
3. Locate the split-Y repeater power sense cable
in kit HKKN4000. This cable has two pre-
lugged wires joined to an unterminated wire.
4. Locate the power tap connector (0982845L01)
in kit HKKN4000.
5. Place the "through" portion of the tap connec-
tor around the positive (red) lead of the dc
power cable for the receive radio. The position
of the tap will depend upon which repeater is
being assembled.
5A. If the repeater is a CDR700, locate the tap
approximately 3" (76 mm) from the 2-prong
March, 2001

Ignition Sense Wiring

"Ford" connector of the power cable. Orient
the tap to allow the power sense cable to exit
away from the "Ford" connector.
5B. If the repeater is a CDR500, locate the tap at
the midpoint of the power cable. The tap will
be approximately in the middle of the top of
the fan. Orient the tap to allow the power
sense cable to exit toward the "Ford" connec-
tor.
6. Place the end of the unterminated wire into
the "tap" portion of the tap connector.
7. Firmly press the metal tap into both wires
with gas pliers. The metal tap should be flush
with the tap connector body.
8. Fold the insulating cover of the tap connector
over the exposed portion of the metal tap and
lock it into place on the tap connector body.
9. Locate the 16-pin accessory connector housing
in kit HKKN4000.
Proceed to the appropriate subsection for you particu-
lar repeater controller.

Basic and i20R Repeater Controllers

The HLN3948 Basic Repeater Controller and the i20R
Onsite Repeater Controller allow connecting to the
ignition sense of both of the Professional-series radios
in the CDR500 and CDR700 repeaters. This is accom-
plished through the accessory connectors on both
repeater controllers.
1. At the double (lugged) end of the cable, cutoff
one of the wires at the Y junction. Insulate the
exposed end of the cut wire with shrink tub-
ing or electrical tape.
2. Plug the terminal of the remaining lugged
wire of the power sense cable into position 10
of the 16-pin accessory connector housing
from kit HKKN4000. Ensure that the small
locking tab of the terminal is facing down
toward the large strain relief tab of the hous-
ing and the terminal clicks into place.
3. Plug the connector into "J4-ACC" of the Basic
repeater controller or the i20R controller.
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Section 12
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