We, at Bosch Security Systems, Inc, would like to take this opportunity to thank you for choosing the RTS
BTR-240 Wireless Intercom System. Many of the features in this product are the result of years of
development work with many of the features developed from customer feedback. We hope that your
experience with this product is a pleasant one and hope to provide you with a continuing line of RTS
products well into the future. In order to get the most out of your new wireless intercom system, please take a
few moments to look through this operating manual before using the product for the first time.
Proprietary Notice
The product information and design disclosed herein were
originated by and are the property of Bosch Security Systems,
Inc. Bosch reserves all patent, proprietary design,
manufacturing, reproduction, use and sales rights thereto, and to
any article disclosed therein, except to the extent rights are
expressly granted to others.
Copyright Notice
Copyright 2011 by Bosch Security Systems, Inc. All rights
reserved. Reproduction, in whole or in part, without prior
written permission from Bosch is prohibited.
All other trademarks are property of their respective owners.
Warranty and Service Information
For warranty and service information, refer to the appropriate
web site below:
Customer Service Department
Bosch Security Systems, Inc.
12000 Portland Avenue South
Burnsville, MN 55337 U.S.A.
Telephone: 800-863-4169
Fax: 800-323-0498
Info@rtsintercoms.com
Technical Questions EMEA
Bosch Security Systems Technical Support EMEA
http://www.rtsintercoms.com/contact_main.php
Disclaimer
The manufacturer of the equipment described herein makes no
expressed or implied warranty with respect to anything
contained in this manual and shall not be held liable for any
implied warranties of fitness for a particular application or for
any indirect, special, or consequential damages.The
information contained herein is subject to change without prior
notice and shall not be construed as an expressed or implied
commitment on the part of the manufacturer.
The RTS BTR-240 is a digital, multi-channel, wireless intercom
system offering reliable and secure, full-duplex communication
with up to 8 wireless TR-240 beltpacks and almost an unlimited
number of half-duplex beltpacks.
Operating in the 2.4 GHz frequency band, the BTR-240 system
uses the widely adopted IEEE 802.11 technology and is approved
for license free use in most countries. The system also incorporates
ClearScan intelligence which will automatically select the optimal
radio frequency (RF) channel for communication.
The RTS BTR-240 has the ability to configure multi-level 802.11
wireless security features, such as packet encryption and MAC
address filtering, as well as 64-bit audio encryption to provide a
highly secure wireless intercom system.
The BTR-240 offers two audio channel operation, allowing users to
select between two individual audio channels of communication.
The system permits users to talk and listen, or listen only, to any
individual audio channel or both channels simultaneously.
The BTR-240 is perfectly suited for stand-alone operation and
can also interface with two-wire intercom systems including
RTS, Audiocom (Telex), and Clear-Com1, as well as four-wire
intercom systems such as the RTS Matrix. The BTR-240 allows
both the two-wire and four-wire intercoms to be used
simultaneously. In addition to the external intercom interfaces,
the BTR-240 also provides connectivity for auxiliary balanced
audio input and output, and speaker output.
The TR-240 beltpacks have the ability to be configured in one of
three operating modes: wireless, wired or master wireless. In
wireless (normal) mode, beltpacks communicate to each other
using the base station as a relay. In wired mode, beltpacks turn off
their wireless ability and communicate via an Ethernet cable or
through a building's existing Ethernet infrastructure. In master
wireless mode, a beltpack itself acts as a mobile access point to
provide wireless coverage for other beltpacks to communicate
without an actual BTR-240 base station.
System Features
Uses the widely adopted 2.4GHz IEEE 802.11 WLAN
•
technology.
No FCC license required and no license required in most
•
countries world-wide.
Multi-level wireless security and audio encryption.
•
ClearScan intelligence to automatically select the best RF
•
channel to operate.
Two audio intercom channels to be used independently or
•
simultaneously.
Up to 8 wireless full-duplex TR-240 beltpacks per base station
•
and nearly an unlimited number of half-duplex beltpacks.
Multiple options for antenna connections and accessories.
•
Easy to read LCD display that indicates the number of active
•
full-duplex TR-240 beltpacks.
BTR-240 base stations and BTR-24 access points can be
•
linked together to provide a wider wireless coverage area.
Compatible with RTS, Audiocom, Clear-Com, and other
•
wired intercom types.
Auto selection of Electret or Dynamic microphones.
•
TR-240 beltpacks can be easily configured to communicate
•
either wired or wireless.
A TR-240 beltpack can be configured to serve as an access
•
point for other beltpacks in the absence of a base station.
Durable, ABS, beltpack case.
•
Removable, dependable, rechargeable, wide temperature
•
range, Li-Ion batteries with low battery indicator.
The TR-240 beltpack has a removable Li-Ion battery pack that
will provide up to 8 hours of uninterrupted operation. The battery
pack can be charged directly in the case by plugging a power
adapter into the beltpack or by placing the battery in the CHG-240
four-bay charger.
1
See “Copyright Notice” on page i.
1-1
Important Safety Instructions
Prior to operation, read and follow all safety instructions.
Throughout this manual, the following notations are used:
WARNING:Indicates a situation which, when not avoided,
has the potential to result in death or severe
injury.
CAUTION:Indicates a situation which, when not avoided,
has the potential to cause the system to no longer
function properly or cause equipment damage.
NOTE:Indicates important additional information.
WARNING:
To reduce the risk of fire or electrical shock, adhere to the
following instructions:
Do not expose the system components to rain or
•
moisture.
Always connect the BTR-240 base station to a main
•
socket outlet having a protective earth ground
connection.
Ensure that the power cords are in a safe and secure
•
place that is protected from being walked on or
pinched.
Do not remove the cover or product casing. All
•
technical service must be performed by qualified
service personnel.
WARNING:
Excessive sound pressure from headsets can cause hearing
loss! The duration of exposure to high volumes must be
shortened to reduce the chance of hearing damage. Signs of
prolonged exposure to excessive audio levels include:
Ringing sounds heard in ears.
•
Can no longer hear high frequency tones, if only for a
•
short time.
WARNING:
Only use the BP-240 battery pack as a replacement battery. A
risk of personal injury and equipment damage exists if the
battery is replaced with an incorrect type.
1-2
Section 2 - BTR-240 Base Station
TALK
CHANNEL
SELECT
1
2
VOLUME
BTR-240
POWER
menu
set
AuxOut:1&2G
121
3
4
6
7
5
89
10
AuxIn:1&2L
RF Ch: 6 2W:1&2
Assoc: 0 4W:1&2
10
Controls and Connections - Front Panel
Figure 2-1
BTR-240 Front View
1.Power on/off switch – turns the power on/off to the
BTR-240.
2.<MENU> button – used to navigate the menu options on
the LCD.
3.<SET> button – used to navigate the menu and select
options on the LCD.
4.Backlit Graphics LCD (liquid crystal display).
5.<UP> and <DOWN> buttons – used to navigate the
menu options on the LCD.
6.<VOLUME> control knob – controls the volume for the
local headset.
7.<CHANNEL SELECT> button – controls the intercom
channel to which the local headset is connected. Each
press of the button changes the connection and cycles
between: Intercom 1, Intercom 2, and both. The
corresponding LEDs will illuminate.
8.<TALK> button – press to enable/disable the audio path
from the local headset. The green LED above the <TALK>
button will illuminate when active.
9.Local Headset Connector – standard 4-pin XLR
connector. Male XLR connector for Telex units, female
XLR connector for RTS units. A dynamic or electret
headset microphone is automatically detected by the base
station and a bias voltage is supplied if necessary.
10. Antenna Mount Knockouts – remove as desired to
mount the antennas on the front panel instead of the rear
panel via coaxial cables.
Power Requirements ...................................................12 - 15 VDC, 1.5 Amps
Temperature Range .............................................-4º F to 130º F (-20º C to 55º C)
Dimensions .........................1 RU unit, 7.5" L x 19" W x 1.75" H (191mm x 483mm x 45mm)
Weight ................................................................3 lb. 7.5 oz (1.58 kg)
1
With no in ter fer ence on the RF chan nel of op er a tion.
2
Tested with over 28 half-du plex us ers.
3
Mea sured ± 3dB.
4
Over the fre quency range of op er a tion.
2-3
[This page intentionally left blank]
2-4
Section 3 - TR-240 Beltpack
OFF
ON
2
1
3
4
5
Controls and Connections - Top Panel
Figure 3-1
TR-240 Beltpack
Top View
1.On/Off & Volume Control – turns the beltpack power
on/off and controls headset volume.
2.Battery Light –
GREEN= Battery OK
YELLOW = Battery Low (~15 mins. of use left)
RED= Battery Low (battery needs charge)
3.Channel <1> “Green” Button and Light – selects the
“Channel 1” intercom. The green light next to the button
will illuminate upon selection.
4.<TALK> Button – press to enable/disable the audio
path from the headset microphone.
The active intercom channel light will remain
illuminated when the microphone path is enabled. The
active intercom channel light will blink when the
microphone path is disabled.
5.Channel < 2 > “Blue” Button and Light – selects the
“Channel 2” intercom. The green light next to the button
will illuminate upon selection.
3-1
OFF
7
6
8
9
Controls and Connections - Bottom Panel
Figure 3-2
TR-240 Beltpack
Bottom View
6.Charge Jack – used to charge the Li-Ion battery.
Accepts a 5.5mm x 2.5mm plug with the center positive.
Must be supplied with a 12VDC regulated power supply
with at least a 400mA current capacity.
7.Charge Light –
RED= Beltpack battery is charging.
GREEN= Beltpack battery is charged.
8.Headset Connector – standard 4-pin XLR connector.
Male XLR connector for Telex units, female XLR
connector for RTS units. A dynamic or electret
microphone headset is automatically detected by the
beltpack and a bias voltage is supplied if necessary.
9. Programming Input – this RJ-45 jack is used for wired
Ethernet connections, configuration, and to update
firmware.
Power Requirements ..............................................Li-Ion Rechargeable (BP-240)
Battery Life ..................................................................Up to 8 hours
Battery Recharge Time
via TR-240 beltpack..........................................................~ 8 hours
via CHG-240 four-bay charger ................................................~ 2½ hours
Low Battery Indication ............................................~15 minutes of battery life left
Temperature Range .............................................-4º F to 130º F (-20º C to 55º C)
3
4
5
Dimensions .................................1 ¾" L x 3 ¾" W x 5 ¼" H (45mm x 95mm x 133 mm)
Weight ...................................................................12.9 oz (0.37 kg)
1
With no in ter fer ence on the RF chan nel of op er a tion.
2
Total number of full-duplex beltpacks include (8) wireless and (1) master.
3
Tested with over 28 half-duplex users.
4
Mea sured ±3dB.
5
Over the fre quency range of op er a tion.
3-3
[This page intentionally left blank]
3-4
Section 4 - Initial Equipment Setup
Push
Down
Unpacking
Unpack the RTS System and retrieve the Package Contents list.
Verify that all contents have been received according to the
Package Contents list. Also, ensure that none of the system
components have acquired any damage.
Contact the shipper or dealer immediately if anything is damaged
or missing.
Operating for the First Time
After unpacking, ensure that all the BTR-240 and TR-240
devices do not have the same IP address. If so, refer to the "User
Configuration" section in this operating manual for instructions
on how to change the IP address.
Prior to use, the TR-240 beltpacks should always have their
batteries fully charged. Refer to the "Battery Charging
Instructions" in this section of the operating manual.
The battery pack is designed to fit only one way in the TR-240
beltpack. Be certain that the gold contacts on the battery align
with the contacts on the beltpack. When inserted correctly, the
battery locking mechanism will “click” and the battery will not be
able to slide out.
To remove the battery pack, simply slide the battery locking
mechanism as indicated by the arrow to release the lock. At this
point, the battery will be free to slide out and be removed from the
beltpack
The capacity, or number of allowable full-duplex beltpacks, is
dependent upon the environment in which the system is used.
When operating for the first time, it is recommended that only a
few beltpacks are used to verify the system operation. Once
communication has been verified with a few beltpacks, more can
be added.
After system operation has been initially verified, it is strongly
recommended that the user login to each of the devices and
change the audio encryption key, SSID, wireless encryption key,
or all, to something different from the factory defaults. This will
ensure that the system is unique and other nearby system devices
cannot connect and communicate. Refer to the "User
Configuration" section in this operating manual for instructions
to change these settings.
Battery Installation and Removal
The TR-240 features a removable and rechargeable Li-Ion
battery pack (Model: BP-240) that requires low maintenance and
superior performance for a wide range of temperatures. Battery
care and maintenance is further reviewed in Section 9.
The BP-240 battery pack is inserted into the TR-240 beltpack by
sliding the battery in from the side.
Figure 4-2
Unlocking Battery Mechanism on TR-240
Battery Charging Instructions
Prior to use, the BP-240 battery packs should be fully charged.
The battery packs can be charged either directly in the TR-240
beltpack via supplied wall adapter, or by using the CHG-240
four-bay quick charger.
NOTE: Battery packs should always be charged in a room
temperature location.
Beltpack Direct Charge
A beltpack direct charge will require approximately 8 full hours
to completely charge a dead battery. Once charging is complete,
beltpacks may be left charging indefinitely. A beltpack can also
be used while charging via beltpack direct charge. This is
especially common for beltpacks in wired mode.
1. Ensure the TR-240 is in the “OFF” position.
2. Plug the AC end of the supplied 12VDC wall adapter into a
standard AC wall outlet. Plug the charge connector into the
charge jack on the bottom of the beltpack.
Figure 4-1
Inserting Battery into TR-240
3. The Charge Light on the bottom of the TR-240 indicates the
battery charge status.
RED=Charging in progress
GREEN=Charging is done
NOTE: Batteries may not charge completely if the beltpack is
being used while charging. Ensure that the beltpack is
in the “OFF” position to completely charge the battery
pack.
4-1
CHG-240 Quick Charge
O
F
F
O
N
B
A
T
T
E
R
Y
B
A
T
T
E
R
Y
1
1
2
2
MI
C
MI
C
A
D
J
A
D
J
TA
LK
TA
LK
S
.
T
.
S
.
T
.
A
D
J
A
D
J
TR
-
2
4
0
TR
-
2
4
0
Charging the batteries in the CHG-240 quick charger will only
require approximately 2½ hours to completely charge a dead
battery. Once charging is complete, batteries may be left charging
indefinitely.
Antenna Connection
The BTR-24 base station is supplied with two (2) antennas for
transmitting and receiving. Both antennas are 3dBi
omni-directional (Model: RA-3) with reverse polarity TNC
connectors.
NOTE: Review the instruction booklet for the CHG-240
quickcharger prior to use.
1. Ensure the TR-240 is in the “OFF” position and remove the
BP-240 battery pack.
2. Plug in the CHG-240 into a standard AC wall outlet.
Figure 4-3
CHG-240 Quick Charge
3. Insert the BP-240 battery pack into one of the bays on the
quick charger. The LED next to the battery bay indicates the
charge status.
Attach one of the antennas to the transmitter antenna jack labeled
"TX" on the rear panel. The antenna should be vertically aligned.
Figure 4-5
Attaching Transmit Omni-directiona Antenna
Attach the second antenna to the receiver antenna jack labeled
"RX" on the rear panel. The antenna should also be vertically
aligned.
YELLOW = Charging in progress
GREEN = Charging is done
4. Once the battery is completely charged, remove it from the
CHG-240 bay, install it back in a TR-240 beltpack and turn
the beltpack “ON” to resume operation.
Beltclip Installation
Install the beltclip by sliding it into the beltclip connector on the
back of the TR-240 beltpack. When inserted correctly, the
beltclip locking mechanism will “click” and the beltclip will not
be able to slide out.
Figure 4-4
Inserting Beltclip into TR-240 Beltpack
Figure 4-6
Attaching Receive Omni-directiona Antenna
Antenna Polarization
The supplied antennas are vertically polarized. This means that
both the transmitting and receiving antennas should operate in the
vertical position for the best performance.
Antenna Placement
Proper antenna placement has a significant effect on the overall
performance of the RTS Wireless Intercom System. The
following suggestions will help optimize system performance.
NOTE: To avoid scratching the TR-240 case, lift the metal tab
The supplied omni-directional antennas have a circular antenna
pattern and radiate RF signals equally in all directions. When
using the omni-directional antennas, the base station should be
located as close to the center of the wireless coverage area as
possible.
The antenna placement and separation distance for the receiver
and transmitter is not adjustable when the antennas are connected
directly to the base station on the back of the unit. If desired, the
antennas can be remotely mounted or mounted on the front panel
for a better signal path. A coax assembly with remote antennas
may be required. See the “Accessories and Replacement Parts”
section for ordering information.
2.Placing the BTR on top of a
shelf or equipment rack unobstructed
without remoting the antennas is OK.
NOTE: Antennas should never be mounted on, or next to metal,
such as beams, walls with metal studs, equipment
racks, etc. This will “detune” the antennas, by altering
the antenna pattern characteristics, which can result in
noise or loss of RF signal at the base station. This also
applies to the antennas when connected directly to the
base station.
NOTE: If the base station is to be located in a shielded rack
mount enclosure or other poor RF location, the
antennas must be mounted remotely with coax
assemblies. See Figure 4-7 for antenna mounting
options when using in an equipment rack.
1.Placing the BTR in a shelf or
equipment rack and using
remote antennas is OK.
Figure 4-7
3.Placing the BTR in a shelf or
equipment rack with the antennas
mounted on the back of the BTR
or the side of the rack is NOT OK.
Equipment Rack Antenna Placement
4-3
TR-240 Beltpack
The TR-240 beltpack contains two internal antennas which are
located on the sides of the beltpack. The beltpack should be worn
on the belt, or attached to a pocket, at the hip with the buttons
facing up. Place the beltpack in a position that allows for greatest
visibility to the BTR-240 base station antennas.
Improving Reception and Increasing Range
The optimal and most reliable performance will result from
keeping the distance from the base station and beltpacks as short
and unobstructed as possible.
Line-of-sight (LOS) is where the transmitters and receivers of
devices have a clear “sight” to each other, and the RF signal can
travel in a straight line between those devices. The best
performance will be obtained by having line-of-sight from the
base station to each beltpack. This can be achieved by having the
beltpack facing the base station antennas while being worn on the
belt or in a pocket.
Attempting to operate the wireless intercom system through or
around obstructions such as walls, ceilings, metal objects, etc.,
will reduce strength of the RF signal and therefore reduce system
range and performance. The human body is also considered an
obstruction to the RF signal.
The antennas that are supplied with the base station should
provide satisfactory system performance in most applications.
System range and reliability can be enhanced, however, by
remotely mounting the antennas or by using alternate antennas
that can be found in the “Accessories and Replacement Parts”
section of this manual.
Figure 4-8
Beltpack on Hip
NOTE: For the best RF signal path, do not allow the TR-240 to
be within 6 inches (15cm) of other objects while being
worn on the belt.
NOTE: The antennas listed in the “Accessories and Replacement
Parts” section of this manual have been approved and authorized
for use with the BTR-240 base station. Using an unauthorized
antenna may be illegal.
4-4
System Quick Start Guide
TALK
CHANNEL
SELECT
VOLUME
BTR-240
POWER
set
The following is a list to quickly get the BTR-240 base station and
wireless TR-240 beltpacks operating.
NOTE:Additional setup information can be found in the "Operating for
the First Time" section of the operating manual.
1. Select a location for the BTR-240 base station and connect
the power cord and antennas.
When using omni-directional antennas, place the base
•
station as close to the center of the coverage area as
possible.
2.Connect any desirable external audio interfaces. For
example: 2-Wire, 4-Wire, Auxiliary, Speaker, local headset.
3. Turn on the base station.
The menu buttons and LCD backlight illuminate and a
•
progress bar displays the status while the unit is booting.
After approximately 25 seconds, the base station will
•
have completed the boot cycle and the Status Screen will
be displayed.
Activate the connected audio interfaces by navigating
•
the menu on the LCD screen.
NOTE:Prir to use, the TR-240s should have their battery packs fully
charged. Refer to the “Battery Charging Instructions” in this
section.
NOTE:While booting, avoid pressing the beltpack buttons so the mode
of operation is not changed unintentionally.
4. Perform a ClearScan.
After the base station has completely booted, press and
•
hold the <MENU> + <SET> buttons for approximately 3
seconds.
The base station will run the CleaerScan operation and
•
select the optimal RF channel for operation.
5. Plug headsets into the TR-240 beltpacks and turn them on,
one by one.
If the beltpack has not been previously set to wireless
•
mode, press and hold the button while the beltpack
boots.
Allow a few seconds between each beltpack power on.
•
After approximately 20 seconds, a voice prompt will
•
announce “wireless” in the beltpack headphones
indicating that wireless communications has started.
The base station will increment the association status on
•
the Status Screen next to “Assoc: XX” for each of the
active full-duplex beltpacks.
The BTR-240 wireless intercom system is now ready for
operation!
Figure 4-9
BTR-240 Supporting 8 Wireless TR-240s
4-5
[This page intentionally left blank]
4-6
Section 5 - BTR-240 Operation
Bosch Communications
BTR-240
A(1.0.0) 4.0
Bosch Communications
BTR-240
Bosch Communications
BTR-240
Powering the Base Station
The BTR-240 base station is powered from an external 12 – 15
VDC supply. The base station accepts a 5.5 mm by 2.5 mm screw
on plug. The source must supply at least 1.5 Amps.
Power the base station via the front panel switch labeled “Power”
by moving the switch to the on, “ | ”, position. Turn off the base
station by moving the switch to the off, “ O ”, position.
NOTE: The supplied power source has been approved for use
with the BTR-240. Users should only use the supplied
power source when operating the BTR-240. For
replacement power supplies, see the “Accessories and
Replacement Parts” section for ordering information.
BTR-240 Operation
This section discusses the operation and features of the BTR-240
base station. This section outlines the basic operation, hardware
interfaces, and setup of the base station.
Basic Operation Description
The BTR-240 digital wireless intercom system offers one of the
most comprehensive, user friendly and versatile set of features
available in wireless intercom systems anywhere in the world.
The base station comes with the ClearScan intelligence which
automatically selects the optimal RF channel for communication.
The BTR-240 base station can accommodate up to 8 full-duplex
wireless TR-240 beltpacks. The base station may also be used
with an unlimited number of beltpacks in half-duplex operation.
The base station, via the local headset or the associated beltpacks,
allows communication with other wireless or wired users. The
2-wire and 4-wire intercoms may even be used simultaneously.
The wired audio interfaces to the base station are:
Once the power switch on the BTR-240 has been turned on, the
buttons and LCD backlights will illuminate. The base station
takes approximately 25 seconds to complete its boot cycle. While
the base station is booting, the status is indicated by a progress bar
on the LCD.
Figure 5-1
Boot Progress Screen
Start-up Screen
Once the base station has finished booting and the progress bar
has been filled completely, the Start-up Screen will be displayed
for approximately 3 seconds. While this screen is displayed, it
will blink the software version numbers of the base station. The
first one will be shown in the lower left corner and the second in
the lower right corner of the LCD.
4-Wire – 2 intercom channels
•
Auxiliary (input and output)
•
Speaker (output)
•
Local base station headset
•
Figure 5-2
Start-up Screen
NOTE: A complete screen flowchart of the base station is
available in Figure 5-47 at the end of this section.
The Status Screen is the main information screen of the base
station. It displays the status of all the system items:
RF Channel of operation
•
Beltpack (full-duplex) Association
•
2-Wire Intercom Settings
•
4-Wire Intercom Settings
•
Auxiliary Input Settings
•
Auxiliary Output Settings
•
Speaker Setting Indicator
•
4.Use the <UP>/<DOWN> buttons to move to a different RF
channel, or press <MENU> to abort changes and display
current settings.
5.Once the desired RF channel is flashing, press <SET> to
select and activate the channel.
6.After the channel is set, the RF channel will stop flashing
and the LCD will pause while the wireless channel is
reconfigured. The LCD will automatically go back to the
Main Menu screen after this process is complete (return to
Step 2).
NOTE: The RF channel of operation is remembered and
BTR-240 will continue to boot on the same channel
until it is set differently by the user.
Figure 5-3
Status Screen
RF Channel Selection
The RF Channel Selection screen allows the user to manually
select the RF channel of operation.
Steps to change the RF Channel:
1.From the Status Screen, press <MENU> on the BTR-240
front panel.
2.Using the <UP>/<DOWN> buttons, navigate the cursor to
the “RF Channel” menu option, then press <SET> to select
the menu.
Figure 5-4
Main Menu Screen
3.The RF Channel Selection Screen is now displayed. The
current RF channel will be flashing indicating that it is ready
to be modified.
Local Headset Interface
Figure 5-6
Local Headset Interface
Talk Button
Press the <TALK> button on the front panel to enable the audio
path from the local headset microphone. The green LED above
the talk button will illuminate when the audio path is enabled and
will be off when the audio path is disabled. The amount of time
the button is pressed indicates how the audio path is enabled.
Momentary:Press and hold the <TALK> button for longer
than ½ second and the microphone path will be
enabled. When the <TALK> button is released,
the microphone path will be disabled.
Push-to-Latch: Tap the <TALK> button for less than ½ second
and the microphone path will latch and remain
enabled after the button is released. Tap the
button again to turn off the latch and disable the
microphone path.
Channel Select Button
Pressing the <CHANNEL SELECT> button will select the
intercom channel for the local headset. Each press of the button
will cycle through the options: Intercom 1, Intercom 2, and both.
The green LEDs above the button will illuminate for which
intercom channel is currently active for the local headset.
RF Channel Selection Screen
Figure 5-5
Volume
The local headset volume is controlled from the front panel by
turning the <VOLUME> knob clockwise and counterclockwise
to increase and decrease the volume respectively.
5-2
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