11
Chapter 3
Installation
Battery
The 9 V battery must be installed before operation.
Figure
1 on page
1
shows
the location of the battery access door. Slide this open and connect the battery.
When transporting or storing the Bird APM-16, be sure the power switch is set
to OFF. In any other position, there is a slight drain on the battery.
Elements
The Bird APM-16 uses Bird Plug-In Elements to make measurements. The
element’s frequency range and maximum power are listed on its label. The
transmitter test frequency should be within the band of the element used. The
arrow on the element points in the direction of power flow that the meter will
read.
To make measurements, insert an element into the line section socket and
rotate it against one of the stops. Contacts on opposite sides of the element
connect with a spring finger in the socket when the element is in the forward or
reverse position. A small catch at the corner of the socket face presses on the
shoulder of the element to keep it in proper alignment (see
Figure
6
).
CAUTION
To prevent damage from battery leakage, remove the battery if the unit will
not be used for more than two weeks.
WARNING
Never attempt to connect or disconnect RF equipment from the transmission
line while RF power is being applied. Leaking RF energy is a potential health
hazard.
WARNING
RF voltage may be present in element socket. Keep element in socket during
operation.
