Operating Instructions

CHAPTER 7
System Operation
Frequency Plan Overview
The BTR/TR-8XX has 36 factory defined frequency groups and
12 user-programmable frequency groups. A Group defines the
two-base station transmit frequencies and thus the two receive
frequencies on all the beltpacks. A Channel defines a base
station receive frequency and thus a beltpack transmit
frequency. A base station receive channel that does not have a
frequency set for it will have a dash to the right of it on the
Group/Channel select screen. Details on setting frequencies may
be found in the BTR 800 Menu Structure on page 40 and TR-
8XX Menu Structure on page 49.
Factory-Defined Groups
The 36 factory-defined groups were carefully chosen to avoid
certain intermod products and various other possible sources of
interference. The Groups are set and cannot be changed. There
is a limited number of channels which can be chosen from
within these groups.
The first 24 factory-defined groups (01A – 12B) are pair groups
that
can be used for single (up to four beltpacks) and dual (up to
eight beltpacks) BTR-800 systems. They are arranged 01A,
01B, 02A, 02B...011B, 12A, 12B. A pair group, like 1A and 1B,
have different base station transmit frequencies, however, they
both have the same eight base station receive channels from
which to choose. Each channel represents a unique frequency.
For example, one BTR-800 could be set on Group 02A and
channels 01, 02, 03, and 04. The other BTR-800 could set on
Group 02B channels 05, 06, 07, and 08. As long as the channels
are different, everything should be fine.
The next 12 groups (13–24) are single groups that primarily are
used for single (up to four beltpacks) BTR-800 systems. The
number of channels from which to choose from in these groups
will vary from group to group.
Three band base stations and beltpacks used in the US have a
reduced channel map offering due to regulatory changes that
reduced the size of the three band. Please see Section 16 for
more information.
User-Programmable Groups
The 12 user-programmable group are initially empty. The
transmit and receive frequencies are fully editable within these
groups. In fact, factory-defined groups may be copied to user-
programmable groups and then edited, if desired. See the BTR-
800 Menu Structure on page 40 and TR-8XX Menu Structure on
page 49 for details on how to copy and
edit frequencies.
System Quick Start
Follow the list below to quickly get a base station and
beltpack(s) operating. When completed the user should have a
base station and 1 to 4 beltpacks up and running with full
operational ability. The base station will be on Group 01A with
its four receivers on channels 01, 02, 03, and 04. Each beltpack
will be on Group 01A with a unique transmit channel number
matching one of the base station receive channels.
1. Plug-in the base station via the supplied power cord and
connect the antennas. The color dots on the base should
match the color rings on the antennas.
2. Base station rear panel switches: Transmit power set to
High and on.
3. Ensure base station rear panel IC switch matches attached
wired intercom system. If used stand alone or connected to
a 4-wire system then IC switch position is not applicable.
4. Press [MENU] as powering-up the base station. This will
place it on group 01A and set the receives on channels: 01,
02, 03, and 04.
5. Place the front panel IC A and IC B IN and OUT level
controls in the 12:00 o’clock position. Check that front
panel IC A and B is in 2-wired for AudioCom (Telex), RTS-
TW and ClearCom wired systems, and 4-wired for RTS
Matrix and stand-alone operation.
6. Pace batteries in the beltpacks.
7. Remove the rear switch cover on the beltpacks. Set the
beltpack rear panel slide switch to push-to-talk (PT TALK).
8. Press [MENU] as powering-up each beltpack. This will
place the beltpack on group 01A with the channel 01
flashing.
9. Use the [UP] and [DOWN] arrow buttons to change the
channel to match a channel on the base station. Then press
[SET]. If leaving on channel, just press [MENU]. Each
beltpack should have a unique channel number.
10. The group/channel on the beltpack should now match the
group and receive channel on the base station. Nothing
should be flashing on the beltpack screens.
11. Plug headsets into the beltpacks and set the microphone
gain so the BAT/OM LED will flash at the beginning of
most words at normal speech levels.
12. DONE.