BTR-24/TR-24
Wireless Intercom
LIT000068TX Rev. A
Bosch Communications Systems
U S E R I N S T R U C T I O N S
2. The beltpacks may be powered with their internal battery (if
already charged) or external AC. If external AC is desired,
use the charging power supplies that come with the beltpacks
for this purpose.
NOTE: Prior to use, the TR-24 Beltpacks and BTR-24 Base
Station need to have their battery packs fully charged. Refer to
battery charge instructions.
3. Connect the beltpack to the an Ethernet cable via the RJ-45
connector at the beltpack’s “EXT” jack. The Ethernet cable
may be T-568A or T-568B cables. A normal or crossover
cable may be used. The beltpacks automatically detect and use
whichever type is connected.
Wireless Mode
A base station is providing wireless coverage over the area in
which the beltpacks will be used.
1. Rack mount or place the BTR-24 base station near the area of
wireless coverage.
4. To place the beltpack in “wired mode”, if not already set, press
and hold the <TWO> button as the beltpack boots. Release
the button once boot finishes. The beltpack will always boot
in the last mode it was set to until the user sets a different boot
mode.
2. Plug the base station’s external power supply into an AC
outlet if available. If external power is not available, then the
base station can run off internal battery (if already charged).
3. Connect the antenna(s) to the base station. The antenna(s)
must have good line-of-sight over the area of use.
Master Wireless Mode
4. Turn-on the base station. After a 20 second boot time the base
will scan the area and select the best RF channel.
The base station is eliminated by having a beltpack act as a base
station. This “master” beltpack may still be used for audio just as a
normal beltpack.
5. After the base station has selected a channel, turn on the
TR-24 beltpacks.
1. The “master wireless mode” is normally a mobile application
and as such power is usually supplied by the internal battery (if
already charged). However, any beltpack may also run off the
charging power supply via an AC outlet if desired.
6. To place the beltpack in “wireless mode”, if not already set,
press and hold the <TALK> button as the beltpack boots.
Release the <TALK> button once boot finishes. The beltpack
will always boot in the last mode it was set to until the user sets
a different boot mode.
2. Place a beltpack in “master wireless mode” by pressing and
holding the <ONE> button as the beltpack boots. The beltpack
always boots in the last mode it was set to until the user sets a
different boot mode.
7. After a 20 second boot time the voice prompt “wireless” will
be heard in the headphone and the channel light will activate
indicating the unit is up.
3. After a 20 second boot time the voice prompt “master
wireless” will be heard in the headphone and the channel light
will activate indicating the unit is up. The button may now be
released.
8. Wear the beltpacks on the hip. Place them in a position that
allows for greatest visibility to the base station’s antenna.
R
Telex
4. After the master beltpack is operating, turn on the other TR-24
beltpack(s). These beltpacks should be booted as in the
“wireless mode” instructions since the master beltpack is
acting as the base station for the system.
TR-24
R
R
Telex
TR-24
Telex
TR-24
R
ON
Telex
Charging Instructions
SELECT
POWER
LOW
AP
BATTERY
ACTIVE
CHANNEL
CLEAR SCAN
LOCK
OFF
CHANNEL
BTR-24
1. Plug the external charger into the charge / power jack on the
bottom of the beltpack or on the rear of the base station.
R
R
Telex
TR-24
Telex
TR-24
2. The LED near the jack indicates the charge status.
• RED
= Charging
= Charging Done
• GREEN
Figure 1.
BTR-24 with omni antennas
Typical Battery Life (from a fully charged battery)
= Up to 8 hours
= Up to 10 hours
TR-24
BTR-24
Wired Mode
Beltpacks are directly connected to each other via an Ethernet
cable or through a building’s Ethernet infrastructure.
Typical Charge Time (from a depleted battery)
TR-24
BTR-24
= 6 –8 hours
= 10 – 14 hours
1. Place the beltpack(s) near the Ethernet connection.
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