User's Manual

Hardware and Wiring Installation Guide 25
Problem: Incorrect voltages across sensor pair at the punch-down block.
Discussion: The voltage across the sensor pair at the collector punch-down block should be between 15
and 17 volts DC. A voltage above18 may indicate an open circuit, while a voltage below 15 may indicate
RF interference, or faulty sensor, or faulty wiring. RF interference may be verified by switching the meter
to the AC scale and reading voltage. With no badge id’s being sent down the sensor pair, any AC voltage
reading may indicate RF interference.
Problem: RF interference.
Discussion: RF interference may be checked as discussed above. Possible RF interference that effects the
sensor network includes, certain types of energy efficient lighting and associated electronic ballasts. The
most common offenders are classified as T8 lights and have and electronic ballast in the 40 kHz range.
Sensor wiring should not touch electrical conduit, or ceiling grates, as they are very good at picking up RF
frequencies.
Problem: Sensor not picking up id from badge (non-working sensor).
Discussion: Smoke detectors using IR detection interfere with Versus sensors. The sensor should not be
installed within two feet of smoke detectors to avoid any interference.
Problem: Collector mounting failures.
Discussion: Collector mounting failures can be avoided by using the mounting clip provided to hold the
end of the collector firmly against the wall.
5.1 Badge Battery Replacement
Warning! A low battery may affect system performance. Change low batteries at first indication.
Note: Static electricity can damage batteries. When changing badge batteries, it is critical to be
grounded, such as by using a static strap and an Electro-Static Device mat to protect from any
shock that would damage the battery or the badge.
The table below provides instructions on how to replace badge batteries. Remember to use a static strap and
an Electro-Static tabletop mat when changing badge batteries.
Badge Battery Type Replacement Instructions
Locator Badge Lithium, 3.5V
750 mAH
1. Place the Locator badge face down on an Electro-Static mat.
2. Locate the screw on the back of the badge. Using a small Phillips
head screwdriver (or security screw driver), remove the screw and
the back cover of the badge and flip it over to expose the battery.
3. Gently lift the battery from the board using your thumb and finger.
4. Insert the new battery into the lead holes. Replace the top cover and
gently tighten the badge screw.
Personnel 3V Lithium 1. Locate the screw on the back of the badge. Using a small Phillips