LAON TECHNOLOGY LT550 EXPERT User manual

ⓒ2016 LaON Technology Co., Ltd. All rights reserved.
LT550 EXPERT
Digital Wireless Intercom System
Operating Instructions
(V2.6 160501)
LaON Technology Co., Ltd.

ⓒ2016 LaON Technology Co., Ltd. All rights reserved.
TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATIONS
3
SECTION 1. INTRODUCTION
5
SYSTEM USAGE EXAMPLE
7
SECTION 2. PRODUCT OVERVIEW
10
BS550 BASE STATION EQUIPMENTS
10
BP550 BELT PACK EQUIPMENTS
11
BATTERY CHARGER AND HEDSET EQUIPMENTS
11
REMOTE BASE STATION EQUIPMENTS
13
EQUIPMENTS OVERVIEW
14
BS550 BASE STATION OVERVIEW
14
BP550 BELT PACK OVERVIEW
15
BASE STATION MENU
16
BELT PACK MENU
17
SECTION3. SYSTEM SETUP AND CONNECTIONS
18
BS550 BASE STATION SETUP
18
BP550 BELT PACK SETUP AND PAIRING UP
19
BELT PACK SETUP
19
PAIRING UP BELT PACKS
20
BATCHG125 BATTERY CHARGER SETUP
23
SECTION 4. SYSTEM OPERATION
24
BS550 BASE STATION OPERATION
24
BP550 BELT PACK OPERATION
31
SECTION5. ADDITIONAL DEVICES SETUP
36
ADDITIONAL DEVICES AND COMMUNICATION GROUP SETUP
36
4-WIRE INTERCOM SETYP
37
AUXILIARY DEVICE SETUP
38
EXTERNAL SPEAKER SETUP
39
REMOTE STATION SETUP
40
SECTION 6. FAQ AND TROUBLE SHOOTING
54
BASE STATION
54
BELT PACK
55
REMOTE STATION
56
SECTION 7. APPENDIX
55
FACTORY DEFAULT SETTING AND RECOMMENDATION
55
6-PIN HEADSET CABLE CONNECTOR
55
10-PIN SPRING CLAMP CONNECTOR
56
Auxiliary CONNECTOR
56
SECTION 8. TECHNICAL SPECIFIACTIONS
57
LT550 SYSTEM SPECIFICATIONS
57
BS550 BASE STATION
57

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BP550 BELT PACK
58
RBS25 REMOTE STATION
59

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IMPORTANT SAFETY INFORMATIONS
1. For LT550 systems, to reduce the risk of electric shock, explosion or fire;
Use only the supplied AC power adapter
Do not disassemble the product
Avoid contact with liquids besides the permitted certain equipments
Use only the proper type of battery and rechargeable battery supplied by the manufacturer
2. Battery Safety and Cautions
Do not charge with any other AC power adapter or charger.
Do not burn, disassemble, bend or short-circuit the battery.
Dispose of used up battery promptly and safely according to local regulations.
Keep battery away from children.
Do not short the metal contacts with electrically conducting material such as bracelets, keys, and etc.
Recommended battery storage temperature is -20 °C to 30°C for less than 1 year, -20°C to 40°C for less than 90
days, -20 °C to 50°C for Less than 30 days.
Recommended Battery charging temperature is 0°C to 40°C
Do not burn or expose batteries to excessive heat such as sunshine or other heat sources
When using alkaline or other maker‟s rechargeable batteries other than LAON provided rechargeable batteries,
LTWI-BAT50 and LTWI-BAT150, use the same batteries as packaged by the makers for the same specifications,
related current and voltage. In case of using non-LAON provided rechargeable batteries, use the maker designated
battery charger. Two or Four batteries to be used together by putting into the Battery Sled of LAON products should
be managed to have the same residual time, life and recharged with same cycles. Using batteries together with
different specifications and natures may cause damages on inner parts of the applicable LAON product and affect
battery operating time.
3. Antenna Safety and Cautions
Use only manufacturer supplied antennas.
Antenna shall be mounted in such a manner to minimize the potential for human contact during normal operation. The
antenna should not be contacted during operation. The minimum separation distance of 7.9 inches (20 cm) from the
antenna to the body of user required.

ⓒ2016 LaON Technology Co., Ltd. All rights reserved. 4
LT550 system operates in the 5GHz UNII band frequency range. LT550 system is approved for license free use in most countries.
There may be restrictions on the use of some bands or RF spectrum operations in some countries. Therefore, it is your
responsibility to confirm with the designated authorizer in your local area whether the equipments of the LT550 system approved to
use in your country or not.
NOTICE
Illustrations, figures and images of this publication are only for explaining equipment‟s operations and functions and may
roughly reflect the actual equipment.
Contact the designated distributors or retailers to avoid erroneous interpretations or language translations that may cause
equipment malfunctioning.
The information herein, including but not limited to, illustrations, figures and images subject to change without prior notice and
shall not be interpreted as an expressed or implied commitment on LAON Technology‟s part.
With due respect, LAON Technology, the manufacturer of the equipment does not provide any expressed or implied warranty to
anything included in this operating instruction and shall have no legal responsibility for any implied warranties of suitableness
for a specific application or for any special, indirect, or consequential damages.
LAON Technology may update this publication at its own discretion.

ⓒ2016 LaON Technology Co., Ltd. All rights reserved. 5
SECTION 1: INTRODUCTION
LaON Technology(„LaON‟)‟s patent-technology base digital wireless intercom system offers the best audio quality with an excellent
clarity by using 5GHz UNII band, triple diversity - frequency, time and antenna, and frequency interference avoidance
technologies. It guarantees the system stability even in the large congested site environments where various A/V and wireless
equipments are co-located.
LT550 EXPERT SYSTEM MAIN FEATURES
LICENSE-FREE 5GHz UNII BAND
5GHz UNII Band, the worldwide license-free frequency band provides approximately up to fifteen (15) RF channels
depending on the regions as opposed three(3) RF channels on 2.4GHz ISM band. Therefore, users are able to enjoy
pleasant wireless communications with even less traffics or interferences. Due to high frequency band, the system is also
hardly affected by high-power digital equipments such as amplifiers and speakers.
SUPER-SCALABLE IP BASED REPEATER SOLUTION, REMOTE STATION
Remote Station(„RBS‟) supports to dramatically expand the wireless communication coverage. Multiple studio spaces or
multi-floors can be easily consolidated by adding Remote Station at each space using the standard LAN network
configuration. Up to five (5) Remote Station can be connected per Base Station, BS550 and it provides PoE (Power of
Ethernet) function for the convenient power supply. Automatic roaming is available between the Base Station and Remote
Stations.
INDUSTRY-TOP LEVEL AUDIO QUALITY
23ms low latency level and non-compressed audio transmission technology guarantee a high quality audio performance.
LT550 system is perfectly tuned professional wireless intercom system that fits to use at various loud and congested site
environments.
FIVE(5) COMMUNICATION GROUP CHANNEL
Single or multiple communication group channels can be assigned to the Base Station, Belt Pack, 4-Wire and AUX
devices each and those group channels can be used in single, multiple or all together at the same time. With this flexible
grouping capability, one (1) Base Station covers IFB communication as well as IC and ISO communications without an
additional IFB system which is „more with less‟ cost efficient solution.
ELEVEN(11) FULL-DUPLEX LISTEN & TALK COMMUNICATION CHANNEL (1 BS + 10 BPs)
Eleven (11) full-duplex audio channels are offered with one (1) Base Station. By making the full use of this with multiple
group channels, a number of independent teams are practically able to have IFB and wireless communications in one (1)
system respectively.
UP TO ONE HUNDRED AND TWENTY EIGHT(128) BELT PACK CONNECTION
One hundred and twenty eight (128) Belt Packs can be registered into a Base Station.
4-WIRE AND AUXILIARY I/O INTERFACES
4-Wire and Auxiliary Input / Output ports are provided to secure seamless connections with wired intercom systems,
external audio devices and etc.
COMPACT DESIGN
Comfortable headset and compact Belt Pack with internal antenna support high wearability with mobility even at the
tough broadcasting or event sites.
VARIOUS OPTIONS ON BATTERY
Either LaON provided rechargeable battery or AA type Alkaline battery with LaON provided designated battery sled can
be used for supplying power to the Belt Pack. Also, non-LaON provided rechargeable battery can be used with the battery
sled.
MONITORING FUNCTIONS
LT550 system provides various monitoring functions for Base Station, Remote Station and Belt Pack such as the link
status, RSSI(Received Signal Strength Indication), battery status and microphone gain level and etc.

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MONITORING OF AUDIO BREAK-UP
When a Belt Pack is out of coverage, the Belt Pack user is easily able to monitor the audio break-up with his/her side
tone unlike other traditional wireless intercom systems.
TOP LEVEL SECURITY WITH AES 256BIT LEVEL 3 ENCRYPTION
AES 256bit Level 3, the top level encryption technology is applied to secure confidential communications.
EFFICIENT 7 PORT CHARGER
There are five (5) bays for charging the Belt Pack batteries which are equipped in the Belt Packs and two (2) bays for
charging the Belt Pack batteries which are separated from the Belt Packs. Two (2) of them are for dual use for charging
Remote Station or Mobile Station‟s batteries.
LaON IN-HOUSE TECHNOLOGIES AND SOLUTIONS
LaON has developed from the wireless SoC built in the systems to the wireless intercom systems in-company by
applying its own patent base technologies. Base on the know-how and comprehensive experiences in wireless
technology, LaON offers timely and prompt service with full flexibilities for customer satisfactions with top priority.
SYSTEMS AT A GLANCE
(BS:Base Station / MS:Mobile Station / BP:Belt Pack / RBS:Remote Station)
LT SERIES
LT750
LT550
LT250
LT150
SYSTEM
Frequency band
5GHz UNII
5GHz UNII
5GHz UNII
5GHz UNII
Station type
Fixed
Fixed
Fixed
Fixed or Mobile
Battery availability for Station
Ｘ
Ｘ
Ｘ
○
Number of full-duplex channel
11(1BS + 10BP)
11(1BS + 10BP)
9(1BS + 8BP)
5(1MS + 4BP)
Number of group channel
5
5
3
2
4-Wire port
○(1)
○(1)
Ｘ
Ｘ
Auxiliary I/O port
○(1)
○(1)
○(1)
○(1)
Number of RBS connection
10
5
1
Ｘ
BP connection and compatibility
BP750, MS150
BP550
BP250, BP550
BP150, BP750
Number of BP connection
128
128
128
128
Link, RSSI, Battery status Monitoring
○(BS, BP)
○(BS, BP)
○(BS, BP)
○(BP)
RF monitoring
○
○(USB S/W)
Ｘ
Ｘ
BP # for group channel allocation
128
32
32
Ｘ
BELT PACK
Two groups communication (IC/ISO)
○
○
○
○
Side tone level adjustment
○
Ｘ
Ｘ
○
Key lock
○
Ｘ
Ｘ
○
Hands off sensibility level selection
○
○
○
○
Low cut adjustment
○(-3dB/-6dB)
Ｘ
Ｘ
○(-3dB/-6dB)
Maser BP function
○
Ｘ
Ｘ
○

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SYSTEM USAGE EXAMPLE
COMMUNICATION GROUP ALLOCATION
Single or multiple communication group channels up to five (5) can be allocated flexibly to the each device and the group
or groups can be selected for RX/TX.
Since the channels can be allocated to the 4-Wire and AUX Input/Output devices, the one (1) system supports various
communication ways such as IFB as well as IC and ISO.
On Belt Pack, communication in each group or simultaneous communications for two groups are available.
IFB and IC/ISO communications in ONE (1) system
Group 2 & 3
Group1: IFB
Group 2 : IC
Group 3 : ISO
Group 1
Auxiliary Microphone
4-Wire Device
Group 2
Group 1
BP1
BP2
BP10
BP17
BP28
BP127
BP128
…
…
…
Single or multiple or all groups can be allocated
BP1
BP2
Group 1
Group 2
Group 3
Group 4
Group 5
Group 1,2
Group 2,3
Group 3,4
Group 1,5
Group 1
Auxiliary Device
Group 2,3
Group 2,3,4
Group 1,2,3,4
Group 1,2,3,4,5
4-Wire Device
BS Headset
…
…
BP3
BP4
BP5
BP10
BP17
BP28
BP127
BP128
…
…
…
…
BS550 Base Station

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SYSTEM USAGE OF THE STAND-ALONE OPERATION
SYSTEM USAGE WITH THE REMOTE STATION
Up to five (5) Remote Station can be connected per Base Station, BS550. With the industry standard LAN network
configuration, multiple studio spaces or multi-floor sites can be easily consolidated.
This super-scalable Remote Station also provides extra-efficient functions such as PoE connection that does not require
a designated local power or battery, and automatic roaming between the Base Station and Remote Stations.
The system allows various types of network connection such as optical fiber cable, PoE and daisy-chain connection.
NOTE: It is highly recommended to compose the network exclusively due to the variable network environment.
……..
BP1
BP2
BP3
BP4
BP127
BP128
BS550 Base Station
BP550 Belt Pack

ⓒ2016 LaON Technology Co., Ltd. All rights reserved. 9
SYSTEM USAGE WITH THE REMOTE STATION AND THE INTERCOM ROUTER
RBS25
Matrix
Intercom
Network
Switch
(LAN)
Network
Switch
(LAN)
RBS25

ⓒ2016 LaON Technology Co., Ltd. All rights reserved. 10
SECTION 2: PRODUCT OVERVIEW
LT550 SYSTEM EQUIPMENTS
The followings are basic LT550 Wireless Intercom System equipments.
BS550 BASE STATION EQUIPMENTS
1RU RACK MOUNT KIT: This wing bracket accessory helps to install the Base Station on the 1RU rack. There are halls
on both side brackets to fix the antennas facing front.
1RU CASCADE KIT: The Base Station, BS550 can be docked to the 19” cascade kit. Locking power connector, 3 Pin
XLR connector for 4-Wire ports and AUX I/O ports, „Push-Pull Locking‟ type EtherCON connectors for three(3) PoE Ports
are provided on the rear panel of the cascade kit.
Base Station Antenna
BS550 Base Station
AC power adapter
1RU Cascade kit, BSCCK100 (Optional)
1RU Rack mount kit, BRK550 (Optional)
10 pin spring clamp connector

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BP550 BELT PACK EQUIPMENTS
BATTERY CHARGER AND HEDSET EQUIPMENTS
BATCHG125 BATTERY CHARGER EQUIPMENTS
AC Power Supply
BATCHG125 Battery Charger
BAT50 Rechargeable Battery Pack (Optional)
Battery sled
BP550 Belt Pack
BPPCH100 Belt Pack Pouch(optional)

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HEADSETS
NOTE: Headsets are designated to use for LAON's wireless intercom systems only.
LSH-S12 (Dynamic)
LMH-10 (Dynamic)
PTE-850 (Electret)
LMH-12 (Dynamic)
LSH-S125D (Dynamic)
LMH-125D (Dynamic)

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RBS25 REMOTE STATION EQUIPMENTS
Remote Station Holder: Insert a Remote Station and fix it with a screw on the holder. Connect the LAN cable by using
the „Push-Pull Locking‟type EtherCON connector on the bottom of the holder. Install them on the wall or camera tripod or
microphone/light stand with interfacing screws.
AC Power Supply
RBS antennas
RBS25
Remote Station
RHD1000
Remote Station holder (Optional

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EQUIPMENTS OVERVIEW
BS550 BASE STATION OVERVIEW
1. Headset TALK button with indicator light
10. Headset speaker volume control (UP)/Menu selection button
2. Headset communication group button
11. Headset speaker volume control (DOWN)/Menu Selection button
3. 4-Wire button with indicator light
12. Menu selection button (LEFT)
4. 4-Wire communication group button
13. Menu selection button (RIGHT)
5. AUX IN, AUX IN/OUT button with indicator light
14. Menu SET button
6. AUX IN, AUX IN/OUT communication group button
15. Headset cable connector (Receptacle)
7. RF ALERT indicator light
16. Hands Free/PTT mode selection button
8. Remote Station LINK Indicator light
17. OLED Display
9. Remote Station ACTIVE indicator light
1. Antenna connector
6. Antenna connector
2. AUX IN connector
7. 8-OHM speaker 2-pin spring clamp connector
3. AUX OUT connector
8. USB connector
4. 4-Wire connector
9. LAN RJ-45 connector
5. Power switch
10. POWER connector
1
2
3
4
5
6
7
8
9
10
Figure 2-2. Rear panel of the Base Station
17
14
15
16
12
1
3
5
2
4
6
7
8
10
9
11
13
Figure 2-1. Front panel of the Base Station

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BP550 BELT PACK OVERVIEW
BP550 Belt Pack is moisture resistant which is excellent in using under humid environment.
1. Headset cable connector (Receptacle)
7. Menu SET button
2. OLED display
8. Headset speaker volume control (DOWN) / Menu selection button
3. Headset TALK button with indicator light
9. Belt clipper
4. Power (PWR) button
10. Battery cover
5. Headset communication group (GRP) button
11. Charger terminals (Bottom of the Belt Pack)
6. Headset speaker volume control (UP) /
Menu selection button
Belt Pack pairing setup key: „PWR + SET‟
Manual hands off key: „PWR + PWR‟(Double click of PWR)
BELT PACK CHARGER TERMINAL SPECIFICATION
NOTE
Do not stand the Belt Pack direct on electric conductors such as bracelets, keys and etc. and do not short the metal
contacts on the bottom of the Belt Pack with those electrically conducting material.
It is necessary to store the battery after fully charged and separating from the Belt Pack.
Turn off the Belt Pack before charging.
1
2
1. –
2. Temperature sensor
3. +
3
Figure 2-3. Panels of the Belt Pack
9
10
11
1
4
2
7
3
5
6
8

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BASE STATION MENU
NOTE: Menu displays will be in sleep mode if no touch is made for approximately 30 minutes. Touching any button on the front
panel of the Base Station will have the screen waken up. Pressing SET button longer than 2 seconds on any menu screen will lead
you to NORMAL menu.
<MAIN menu>
<VOLUME menu>
<UNLATCH menu>
<RBS menu>
<BELTPACK menu>
<NORMAL menu>
<MULTI-BS menu>
<MONITOR menu>
<BS menu>
<LABEL/GROUP/PAIR menu>
<RESET menu>
<SET GROUP menu>
<SELECT RF CH menu>

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BELT PACK MENU
Pressing SET button on the NORMAL menu will lead you to MAIN menu.
On MAIN menu, press UP/DOWN direction key to move to the next menus.
Pressing PWR button on any menu screen will lead you to the NORMAL menu.
<MAIN menu >
<NORMAL menu >
<Hands Free On/Off selection menu>
<Speaker Volume adjustment menu>
<Microphone Gain adjustment menu>
<Two Groups setting menu>
<Handsoff Sensibility selection menu>

ⓒ2016 LaON Technology Co., Ltd. All rights reserved. 18
SECTION 3: SYSTEM SETUP AND CONNECTIONS
BS550 BASE STATION SETUP
Following descriptions are stand-alone LT550 system configuration. Using additional devices such as Remote Stations, 4-wires,
auxiliary input/outputs and 8ohm speaker will be explained later on ADDITIONAL DEVICES SETUP in SECTION 5.
Step 1: Put two enclosed antennas to the antenna connectors (#1 and #6) on the rear panel of the Base Station. Turn the sleeve
on each of the antenna connectors clockwise to tighten them, and ensure that the antennas are connected firmly.
NOTE 1: These two antennas must be positioned vertically and be folded completely as 90 degree. Otherwise, it will be
caused to weaken the signal.
NOTE 2: While attaching the antennas directly to the rear panel of the Base Station, the Base Station should be away
from any metal obstructions, walls, and electronic equipments that can create radio interference. It is highly
recommended to place the antenna as high as possible in the center of the coverage and away from
obstructions.
Step 2: Plug the DC cable from the enclosed wall-adapter power supply into the 12VDC POWER connector (#10) on the rear of the
Base Station. Plug the large female connector at the end of the AC power cord into the power supply.Plug the other end of
the AC power cord into a standard wall outlet.
Step 3: The headset is with „Push-Pull Lock‟ type connector. Put a headset into the HEADSET connector (#15) on the front panel of
the Base Station. To disconnect the headset, hold the plug on the headset connector and pull out slightly turning.
Step 4: Press the POWER switch (#5) on the rear panel of the Base Station to turn on the Base Station. „DFS detecting‟ will be
indicated on the Base Station‟s front panel display and once the detecting is completed, NORMAL menu will pop up as
shown in Figure 3-3: The green light on top of the TALK button (#1), as shown in the Figure 3-2, should be flashing slowly
indicating the readiness of Base Station to start operations.
1
3
5
2
4
6
17
7
8
10
14
15
9
16
12
11
13
Figure 3-2. Front Panel of the Base Station
1
2
3
4
5
6
7
8
9
10
11
Figure 3-1. Rear Panel of the Base Station

ⓒ2016 LaON Technology Co., Ltd. All rights reserved. 19
See the BS550 BASE STATION OPERATION in SECTION 4 for details about the NORMAL menu.
BP550 BELT PACK SETUP AND PAIRING UP
When you operate each Belt Pack for the first time with the Base Station, you must pair up the Belt Pack with a Base Station. This
pairing process allows a Base Station and a Belt Pack to recognize each other and an own cryptic code will be given for the
corresponding system. The Base Station will identify all the paired up Belt Packs and recognize the difference between the Belt
Packs. If a Belt Pack is added or replaced later, the new one is necessarily to be paired up with the Base Station. If the previous
Belt Pack will not be in use, turn off the Belt Pack or do the paring process again with a different label.
Each Base Station allows up to one hundred twenty eight (128) Belt Pack connections. The Base Station monitors various
information of the thirty two (32) Belt Packs, from the firstly paired up Belt Pack to thirty secondly paired up Belt Pack.
NOTE: BP550 can also be paired up with the Base Station, BS250. And BP550 will be connected to only one Base Station lastly
paired up with.
BELT PACK SETUP
Before pairing up the Belt Pack with the Base Station, set up all Belt Packs as following steps:
Slide the cover down to open the battery cover (#10), and put a fully charged rechargeable battery pack (BAT50) or battery sled
with two fresh AA 1.5V alkaline batteries. Make sure the position of polarity (+, -) is correct. Close the battery cover.
9
10
11
1
4
2
7
3
5
6
8
Figure 3-3. NORMAL menu