Array electronic AGT600 User manual

CONTENTS
Safety Precautions
Chapter 1 Poduct Description............................................... 1
1.1 Introduction....................................................................... 1
1.2 Applicable Occasions........................................................ 1
1.3 Components of the Product............................................... 2
1.4 Main Features.................................................................... 3
Chapter 2
Operating Instructions of AGT600 Transmitter..................... 4
2.1 Components`Names.......................................................... 4
2.2 The Description of Display Interface ............................... 5
2.3 Introduction of Keys.......................................................... 6
2.4 Operating Instructions....................................................... 7
2.4.1 Advance Preparation................................................... 7
2.4.2 Power On/Off.............................................................. 8
2.4.3 The Way of Carrying Transmitter................................ 9
2.4.4 Mute Mode.................................................................. 9

2.4.5 Battery Capacity Indicator.......................................... 9
2.5 Transmitter`s Function Setting...................................... 10
2.5.1 Default Setting.......................................................... 10
2.5.2 Channel Setting......................................................... 11
2.5.3 Sensitivity Setting..................................................... 12
2.5.4 User-selectable Frequency Setting............................ 13
2.5.5 Lock Mode Setting.................................................... 13
2.5.6 Pilot Mode Setting.................................................... 14
Chapter 3 Operating Instructions of AGR600 Receiver................
................................................................................................. 15
3.1 Components`Names....................................................... 15
3.2 the Description of Display Interface.............................. 17
3.3 Introduction of Keys...................................................... 18
3.4 Operating Instructions.................................................... 19
3.4.1 Advance Preparation................................................. 19
3.4.2 On/Off System.......................................................... 20
3.4.3 the Way of Carrying Receiver................................... 21
3.4.4 Volume Adjustment...................................................21
3.4.5 Digital Mute Mode....................................................21
3.4.6 Battery Capacity Indicator.........................................22
3.4.7 Quick Channel Selection...........................................23
3.5 Receiver`s Function Setting...........................................23
3.5.1 Default Setting..........................................................23
3.5.2 Channel Setting.........................................................25
3.5.3 Squelch Setting..........................................................25
3.5.4 User-selectable Frequency Setting............................26
3.5.5 Pilot Mode Setting.....................................................27
3.5.6 Lock Mode Setting....................................................28
Chapter 4 Troubleshooting.....................................................29
Chapter 5 Suggestions and Maintenance...............................31
Chapter 6 Technical Parameters.............................................32

Safety Precautions
Important Information
This manual contains warnings and notes which you should
observe to ensure your own personal safety, as well as to protect
the product and connected equipment. They are marked as
follows according to the level of danger.
Warning
Indicates that the potential serious damage to the
system may be caused if properprecautions are not
taken.
1. When the system is short of voltage,the batteries
should be recharged in time.
Otherwise the life span
of the batteries will be influenced.
2. Please use the same brand batteries,and do not
use a new battery together with an old battery at
the same time.
3. Please do not charge the non-rechargeable battery.
4. Please do not pull the antenna forcefully.
Notes Indicates the slight damage to the system may be
caused if proper precautions are not taken.
1. Please clean the machine by dry soft cloth. Do not
clean the machine with gasoline, or other chemical
products.
2. Please do not touch the body with the antenna.
3. Please do not twist or knob the antenna with the
microphone wire.
Chapter 1 System Description
1.1 Introduction
The UHF Tour Guide System AG600 series is a portable,
high- performance, wireless system composed of the AGT600
body-pack Transmitter and AGR600 body-pack Receiver.
Whether at the crowded tourist attractions or at the noisy factory,
the system delivers high quality sound very clearly and allows
the user to move around freely at the certain distance without
any influence on the quality of received sound.
This system is an all-round equipment designed for language
interpretation and tour group.It is widely used in group visiting
activities such as touring, factory visit, training classes etc.
1.2
App li c ab le Occasions
Factory Visit Tourist Attractions
Museum International Meeting
Exhibition Large-scale Speech
Gymnasium School Meeting Room
1

1.3 Components of the Product
AGT600 body-pack transmitter
AGR600 body-pack receiver
1.2V (such as NI-MH, 1300mAH)*2 AA type rechargeable
battery or 1.5V * 2 AA Alkaline disposable battery
Headset microphone
Lavalier microphone
Stereo earphone（Provided several optional types)
Portable charging case
Transmitter/Receiver carrying case
2 3
Portable, exquisite, stylish and user-friendly streamline
design.
Adopting UHF system and 700-960MHz professional
frequency with high anti-interference.
PLL synthesized design, and higher frequency stability.
Digital mute lock setting ensures no interference is picked.
White backlit LCD displays operation menu and status
clearly.
Using ordinary “AA” size battery with high efficiency and
prolonged battery life.
Able to use rechargeable battery and the recharging device is
provided.
Displaying the battery capacity, and clearly indicating
battery consumption status.
Automatic power off when the battery is low to protect the
battery life.
Setting key lock mode allows you to avoid accidental
triggering key operation.
Advanced frequency group allows several groups to use this
system simultaneously on the same occasion.
External microphone input jack can input audio source, such
1.4 Main Features
as CD, MP3 to realize music sharing, and also can input the
electronic tour guide recording.
High quality and durable plastic cover with strong resistance
to impact.

4
Chapter 2 Operating Instructions of
AGT600 Transmitter
AGT600 is a portable body-pack transmitter, which can be
easily worn on the waistband or on the front of chest. This
transmitter has six selectable channels and a user-selectable
channel.
2.1 Components` Names
①ESC key( ON/OFF key)
②Microphone/Audio input jack
③MUTE key
④Antenna
⑤Red power status indicator (Power)
2.2 The Description of Display Interface
The standard display is shown as follow when the transmitter
has been turned on:
The display shows CH 1, in which 1 represents that the first
channel is used currently.
FM modulation indicator
Battery capacity indicator
Keyboard Lock mode enabled
Pilot mode enabled
Mute mode enabled
⑥
Green audio (voice level) modulation indicator (AFPEAK )
⑦ / Selection keys Battery cover latch
⑧SET key Charging contact
⑨Battery compartment LCD Display
⑩Battery cover Accessories` slot
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2.3 Introduction of keys
Keys Mode Function
Standard display Enters the operation menu
Operation menu Enters the setting mode
Saves the settings and returns
to operation menu
Press the selection keys
simultaneously to display
the present frequency of the
current channel
Operation menu Operates menu selection
The setting mode Switches status
Press and hold for 1 second to
enable the transmitter
Press and hold for 3 seconds to
disable the transmitter
Returns to the standard display
Gives up the setting and
returns to the operation menu
SET
/
ESC
( ON
/OFF)
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Standard display
Power off status
Standard display
Operation menu
The setting mode
The setting mode
to select the menu clockwise to select the menu
counterclockwise.
Pressing / keys simultaneously can display the
present frequency of the current channel. If press /
keys simultaneously again at this time, or no key
operation has occurred in 10 seconds,the screen will
return to the standard display. The user-selectable
frequency function
has been enabled if the standard
display is unable
to be returned. (Please refer to 2.5.4
to set）
When the keyboard lock function is disabled, pressing
any key will turn the backlit lamp on. If no key
operation has occurred in 15 seconds, the backlit lamp
will turn off.
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2.4 Operating Instructions
2.4.1 Advance Preparation
1．Prepare two AA batteries.
2．Press two battery cover latches at the side of battery cover
simultaneously. Open the battery cover and place two AA
batteries in the compartment,making note of the battery
polarity shown in the battery compartment, then close
battery cover until it snaps shut.
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8
3． Plug the headset microphone, lavalier microphone or
external audio input (such as MP3 player etc.) to the
microphone/audio input jack ②.
4．Select the proper sensibility according to the actual
situation.（Please refer to the 2.5.3 for details.)
2.4.2 Power On/Off
1． Open the battery cover at first.
2
．
Press and hold“ESC（ON/OFF）”for almost 1 second
when the power is off, then the backlit lamp of
LCD turns on and
appears the standard display;the
red power status indicator⑤turns on and transmitter
is enabled at the same time.
3．Press and hold“ESC（ON/OFF）”for 3 seconds or
so when the screen is in
standard display, then
the screen appears
“OFF”; the backlit lamp of
LCD turns off and the transmitter is disabled.
●
The standard caliber of the microphone` s plug is
3.5mm.
● Please ensure that the mute mode is not enabled.
2.4.3 The Way of Carrying Transmitter
1. Wear the lavalier
microphone or head-
set microphone.
2.
Clip the transmitter
over the proper
position ofwaistband
through the metal clip
on the rear panel of
the transmitter , or
hang the transmitter
on the front of the
chest by tying an
accessory string to
the accessories`slot .
2.4.4 Mute Mode
Slide the mute switch to the“MUTE”. When the display shows
“ ”, the mute mode is enabled. At this time, the
microphone audio input is off and the transmitter can not receive
any audio information.
2.4.5 Battery Capacity Indicator
When the red power status indicator ⑤has turned on after the
transmitter is normally enabled ,the display will show the current
battery capacity.
3 segments：The batteries are at 90％or greater capacity.
2 segments：The batteries are at 60% or so capacity.
1 segment：The batteries are at almost 30％capacity.
0 segment：The batteries are at almost 10％capacity.
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2.5 Transmitter`s Function Setting
2.5.1 Default Setting
Channel 1 OFF
Sensibility - 10dbm Pilot mode ON
Keyboard Lock OFF
If the batteries are not replaced immediately when the battery
capacity indicator is 0 segment,the battery indicator`s frame
begins flashing along with the red power status indicator to warn
you that the batteries capacity is used up. If the batteries are not
replaced until this moment,the transmitter will turn off
automatically to protect the battery life after the red power status
indicator kept flashing for 2 minutes.
When the transmitter will not be used for a long time,
please take out the batteries from the battery
compartment in order to prevent the damage to the
product resulted from battery leakage.
Please recharge the batteries in time when the battery
is low, or the battery life will be reduced.
User-selectable
Frequency Setting
Press“SET”key to enter the operation menu when the screen
is in standard display. Shown as follow:
CHAN Channel setting menu
SENSIT Sensitivity setting menu
MHz User-selectable frequency setting menu
Pilot setting menu
Keyboard lock setting menu
2.5.2 Channel setting
During the screen in operation menu, press / key to make
the“CHAN”indicator blink, then press“SET”key to enter the
channel setting mode.
The desired channel can be selected by pressing / key.
Press
“SET”key to save the current selected channel and return
to the
operation menu or press“ESC”key to give up
the present selection
and return to the operation menu.
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1 2
2.5.3 Sensitivity Setting
During the screen in operation menu, press / key to make
the“SENSIT”indicator blink, then press “SET”key to enter the
sensitivity setting mode.
If the preset sensitivity is too high and the input signal to the
transmitter is too strong , the modulated audio will be caused to
be so strong that the FM modulationindicator flashes with full
segments and the green audio (voice level)modulation indicator
(AFPEAK) ⑥will turn on. The sensitivity
can be lowered
properly by pressing key at this time
.If the preset sensitivity is too
low, the modulated audio is so weak that the surrounding noise
will be
picked up and the audio input quality will be affected. At
this time, you may press key toenhance the
sensitivity properly.
At
last, press“SET”key to save the current selected sensitivity and
return to the operation menu or press“ESC”key to give up the
present selection and return to the operation menu.
When the normal speech voice or audio source input is ideally
set, the FM modulation indicator will flash with 3 to 5 segments,
and the green audio(voice level) modulation indicator will turn
off.
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In order to gain the optimal received quality, please set
the transmitter`s sensitivity according to the real
needs！！The sensitivity setting reference is shown as
follow:
External audio source input：
sensitivity is set at -30 —— -20 dBm
Microphone input：
sensitivity is set at -10 —— 0 dBm
2.5.4 User-selectable Frequency Setting
During the screen in operation menu, press / key to make
the“MHz”indicator blink, then press“SET”key to enter the user-
selectable frequency setting mode and the last set frequency value is
shown on the display.
Press / key to re-select your desired frequency ranging from
854MHz to 865MHz. The frequency will drop by 0.1MHz
（100KHz）for each pressing of key, and
increase by 0.1MHz
（100KHz）for each pressing
of key. If press and hold or key,
the frequency will decrease or increase continuously.
Press“SET”key to save the current selected frequency and return to
the operation menu or press “ESC”key to give up the present
operation and return to the operation menu. If the screen returns to
the standard display after the user-selectable frequency mode is
enabled, the LCD display will not show the channel, but the user-
selected frequency value will be shown.If the user set the channel
after having enabled user-selectable frequency mode, the user-
selectable frequency mode will be disabled automatically.
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2.5.5 Lock Mode Setting
During the screen in operation menu,press / key to make
the“ ”indicator blink, then press “SET”key to enter the
lock mode. If the display shows“ON”, it indicates the transmitter
is in lock mode now; if the display shows“OFF”, it indicates
that the lock mode is disabled.
Pressing / key can switch between“ON”and“OFF”. Press
“SET”key when the display shows“OFF”to disable the lock
mode and return to the operation menu. When the display shows
“ON”,press “SET” key to enable the lock mode and return to
the operation menu ,at this time press “ESC” key can return
to the standard display and the “ ” icon is shown on the
display,meanwhile,the / becomes invalid,but the “ESC” key
and “SET” key can still be used effectively.
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1 4
The transmitter` s pilot mode must have been
enabled before enabling the receiver`s pilot
mode.
During the transmitter in the setting status, if no
key operation has occurred in 10 seconds, the
screen will exit the setting mode automatically and
return to the standard display.
It is unnecessary to reset when you restart the
transmitter, because all settings have been saved
after the transmitter is turned off.
2.5.6 Pilot mode setting
During the screen in operation menu,press / key to make
the“ ”indicator blink,then press“SET”key to enter the
pilot mode setting.If the display
shows“OFF”,it indicates the
pilot mode
is disabled; if the display shows“ON”,it indicates the
transmitter is in pilot mode now.
Pressing / key can switch between“ON”and“OFF”.Press
“SET”key when the display shows“OFF”to disable the pilot
mode and return to the operation menu.When the display shows
“ON”, press “SET”key to enable the pilot mode and return to
the operation menu, at this time press“ESC”key can return to the
standard display and the“ ”
icon is shown on the display,
which indicates the
pilot mode is enabled.
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1 5
Chapter 3 Operating Instructions of
The AGR600 Receiver
AGR600 is a portable body-pack receiver, which can be easily
worn on the waistband or on the front of chest. This receiver has
six selectable channels and a user-selectable channel.
3.1 Components` Names
①ESC Exit key
②Volume control knob(ON/OFF)
③Earphone/Audio output jack
④Antenna
⑤Red power status indicator (Power)
⑥Green RF signal indicator (RF)
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1 6
The red power status
indicator ⑤willglow
constantly at the
rightside of
the display after the receiver
has
been turned on.When
the
battery capacity islow ,the
red power status indicator
will be flashing to indicate
that you should replace the
batteries imediately.
When a signal has been
received, the green RF
signa lindicator
at the right
side of the display
will glow
to indicate the receiver
operates normally.
⑦/ Selection keys Battery cover latch
⑧SET Key Charging contact
⑨Battery compartment LCD Display
⑩Battery cover Accessories`slot
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1 7
3.2 The Description of Display Interface
The standard display is shown as follow when the receiver has
turned on:
The display shows CH 1, in which 1 represents that the first
channel is used currently.
RF signal intensity indicator
Battery capacity indicator
Keyboard Lock mode enabled
Pilot mode enabled
Mute mode enabled

18
Keys Mode Function
Standard display Enters the operation menu
Operation menu Enters the setting mode
Saves the settings and returns
to operation menu
Standard display Operates channel selection
Operation menu Operates menu selection
The setting mode Switches status
Switches between the
displayed channel and
displayed frequency
Operation menu Returns to the standard display
Gives up the setting and returns
to the operation menu
Power off status Turn on the receiver
Turn off the receiver and
adjust the volume
ESC
ON/
OFF
3.3 Introduction of keys
SET
/
Standard display
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The setting mode
The setting mode
1 9
3.4 Operation Instructions
3.4.1 Advance Preparation
1. Prepare two AA batteries.
2. Press two battery cover latches at the side of
battery cover simultaneously. Open the battery
cover and place two AA batteries in the
compartment,making note of the battery polarity
shown in the battery compartment, then close
battery cover until it snaps shut.
to select the menu clockwise to select the menu
counterclockwise.
When the keyboard lock function is disabled, pressing
any key will turn the backlit lamp on. If no key operation
has occurred in 15 seconds, the backlit lamp will turn off.
Press “ESC” key to display the present frequency of the
current channel. If press “ESC” key again, or no key
operation has occurred in 10 seconds, the standard
display will be returned. The user- selectable frequency
function has been enabled if the standard display is
unable to be returned. (Please refer to 3.5.4 to set )
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Power on status

7
20
3.4.2 On/Off System
When the receiver is in power off status,rotate the ON/OFF
②knob clockwise until a snap is generated and the backlit lamp
of LCD turns on with a standard display, which indicates the
receiver is enabled.
When the receiver is in power on status, rotatethe ON/OFF ②
knob counterclockwise until a snap isgenerated and the backlit
lamp of LCD turns off,which indicates the receiver is disabled.
3. Plug the earphone to the audio output jack ③,and the
standard caliber of the earphone`s plug is 3.5mm. Please
make sure the earphone`s plug is inserted completely.
4. Change the squelch level appropriately according to the real
situation. (Please refer to 3.5.3 for detailed operations）
21
3.4.3 The Way of Carrying Receiver
Clip the receiver over the proper
position of waistband through
the metal clip on the rear panel
of the receiver,or hang the
receiver on the front of the chest
by tying an accessory string to
the accessories`slot.
3.4.4 Volume Adjustment
When the receiver is turned on, rotate the volume control
knob clockwise to increase the audio volume, and rotate the
knob counterclockwise to decrease the audio volume.
●
Please rotate the volume control knob to the lowest
volume before wearing the
earphone,then rotate the
volume control
knob to the proper position
gradually.
3.4.5 Digital Mute Mode
If the transmitter`s pilot mode is disabled when the receiver`s
pilot mode is enabled,the receiver`s mute
mode will be enabled
automatically.Then the received
signal strength will be displayed
on the receiver`s screen, but no sound will be received, and the“
”icon will be displayed compellingly.

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3.4.6 Battery Capacity Indicator
When the red power status indicator ⑤has turned on after the
receiver is normally enabled, the display will show the current
battery capacity.
If the batteries are not replaced immediately when the battery
capacity indicator is 0 segment, the battery indicator`s frame
begins flashing along with the red power status indicator to warn
you that the batteries capacity is used up. If the batteries are not
replaced at this moment, the receiver will turn off automatically
to protect the battery life after the red power status indicator kept
flushing for 2 minutes.
When the receiver will not be used for a long time,
please take out the batteries from the battery
compartment to prevent the damage to the product
from battery leakage.
Please recharge the batteries in time when the battery
is low, or the battery life will be reduced.
If the receiver is turned off automatically resulted
from the shortage of the battery capacity, it is necessary
to rotate the ON/OFF knob to the OFF position to
replace the batteries, and have waited 15 seconds
before the receiver is turned on again in order to
protect the equipment and prolong the batteries` life.
3 segments：The batteries are at 90％or greater capacity.
2 segments：The batteries are at 60% or so capacity.
1 segment：The batteries are at almost 30％capacity.
0 segment：The batteries are at almost 10％capacity.
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Only after the keyboard lock mode is
disabled can this operation be executed！
3.5 Receiver`s Function Setting
3.5.1 Default Setting
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3.4.7 Quick Channel Selection
Press / keys under the standard display interface
directly can change the currently tuned channel quickly when
the keyboard lock mode of the receiver is disabled.
Operating procedure：Press or key at the first time will
enable the backlit lamp to glow, but the channel will not be
changed. Then each pressing of key will subtract one from
the channel setting value and each pressing of key will add
one to the channel setting value.
The current user-selected frequency value will be displayed
when the user-selectable frequency setting is enabled after the
receiver is turned on. The quick channel selection can be used
too,but the changed frequency value is 0.1MHZ (100KHZ)for
each pressing of or key. Press and hold or key
enable
the frequency value to be changed continuously.
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24
Channel 1 OFF
Squelch Level mi Level Pilot mode ON
Keyboard Lock OFF
Press“SET”key to enter the operation menu.
User-selectable
Frequency Setting
CHAN Channel setting menu
SQELCH Squelch Level setting menu
MHz User-selectable frequency
setting menu
Pilot setting menu
Keyboard lock setting menu
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3.5.3 Squelch Setting
During the screen is in operation menu, press / key to
make the“SQELCH”indicator blink, then press“SET”key to
enter the squelch setting mode. The squelch level can be adjusted
by pressing / key.The three levels are Hi(high),mi(middle),
Lo(low) respectively.
If there are stronger interfering signals around the receiver, the
squelch level can be raised to Hi or mi. However, the operating
range will be reduced. If it is needed to extend the operating
range of the receiver, the squelch level can be lowered to Lo or
mi in order to receive audio information with high quality.
The reference of squelch level setting is shown
as follow:
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3.5.2 Channel setting
During the screen in operation menu, press / key to
make the“CHAN”indicator blink, then press
“SET”key to enter
the channel setting mode.
The desired channel can be selected by pressing / key.
Press
“SET”key to save the current selected channel and return
to the
operation menu or press“ESC”key to give up
the present selection
and return to the operation menu.
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the squelch level Hi — mi L
The ambient stronger interference or
close range :
Long range : the squelch level Lo — mi L
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26
3.5.4 User-selectable Frequency Setting
During the screen is in operation menu, press / key to
make the“MHz”indicator blink, then press“SET”key to enter the
user-selectable frequency setting mode and the last set frequency
value is shown on the display. Press / key to re-select y
our
desired frequency ranging from 854MHz to
865MHz.
The frequency will drop by 0.1MHz（100KHz）for each
pressing of key, and increase by 0.1MHz（100KHz）for each
pressing of key. If press and hold or key,the frequency
will decrease or increase continuously. Press“SET”key to save
the current selected frequency and return to the operation menu
or press“ESC”key to give up the present
operation and return to
the operation menu. If the
screen returns to the standard display
after the user-selectable frequency mode is enabled, the
LCD display will not show the channel, but the user-selected
frequency value will be shown.
If the user set the channel after having enabled user-selectable
frequency mode,the user-selectable frequency mode will be
disabled automatically.
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The transmitter`s pilot mode must have been enabled
before enabling the receiver`s pilot mode.
The receiver can reduce the annoying noise greatly.
after this mode is enabled, but the operating range of
the receiver will be shorten at the same time.
display, which indicates the pilot mode is enabled.
3.5.5 Pilot mode setting
During the screen is in operation menu, press / key to
make the“ ”indicator blink, then press“SET”key to
enter the pilot mode setting If the display shows“OFF”,it
indicates the pilot mode is disabled;if the display shows“ON”,it
indicates the receiver is in pilot mode now.
Pressing / key can switch between “ON”and “OFF”.Press
“SET” key when the display shows “OFF” to disable the pilot
mode and return to the operation menu. When the display shows
“ON”, press “SET”key to enable the pilot mode and return to
the operation menu, at this time press“ESC”key can return to
the standard display and the“ ”icon appears on the
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3.5.6 Lock Mode Setting
During the screen is in operation menu, press / key to
make the“ ”indicator blink, then press“SET”key to enter
the lock mode.If the display shows“ON”, it indicates the receiver
is in lock mode now; if the display shows“OFF”, it indicates that
the lock mode is disabled.
Pressing / key can switch between“ON”and
“OFF”.
Press“SET”key when the display shows
“OFF” to disable the
lock mode and return to the operation menu. When the display
shows“ON”, press“SET”key to enable the lock mode and return
to the operation
menu.At this moment press“ESC”key can return
to
the standard display and the“ ”icon is shown on the
display, meanwhile, the / becomes invalid to avoid
accidental change of the currently tuned channel, but the“ESC”
key and“SET”key can still be used effectively.
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During the receiver is in the setting status, if no key
operation has occurred in 10 seconds, the screen will
exit the setting mode automatically and return to the
standard display. The current settings become invalid.
It is unnecessary to reset when you restart the receiver,
because all settings have been saved after the receiver
is turned off.
2 9
Chapter 4 Troubleshooting
Problems Possible reasons Solutions
The receiver can
not be turned on
after replacing the
old batteries
The receiver
has no power
The batteries` capacity
is too low Replace the batteries
The receiver is in
memory protection
of battery capacity
rotate the ON/OFF knob
to the OFF position, and
waited 15 seconds before
the receiver is turned on
again
No RF signal is
received
The transmitter and
the receiver are tuned
on the different
channel
Set the transmitter and
the receiver on exactly
the same channel
The receiver is out of
its operating range
Reduce the distance
between the transmitter
and the receiver
The transmitter is
disabled Turn on the transmitter
There is no sound
when the RF
signal is received
There is something
wrong with the
earphone or
microphone
Change the earphone
or the microphone
The mute mode of
the transmitter is
enabled
Disable the mute mode
of the transmitter

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Problems Possible reasons Solutions
The pilot mode of
the receiver is
enabled, while the
transmitter`s is
disabled
There is no
sound when the
RF signal is
received
Disable the pilot mode
of the receiver, or enable
the pilot mode of the
transmitter
There is too
much ambient
noise
The sensitivity of
the transmitter is
set too low
Increase the sensitivity
of the
transmitter
properly
The audio is
distorted, and
the green audio
modulation
indicatoris lit
The sensitivity of the
transmitter is set too
high or the input
signal to the
transmitter is too
strong
Lowerthe sensitivity of
the transmitter
appropriately, or weaken
the input signal properly
“ PLL” appears
on the display
when the receiver
is turned on
The signal is not
locked
Wait more than 15
seconds before turning
on the receiver again
/ key is
out of control
The keyboard is locked
and the“ ”
icon
appears on the display
Unlock the keyboard
(refer to 2.5.5 /3.5.6）
The“ ”icon
disappeared
The receiver is
unable to receive
the
signal when
using
other brand
transmitters
The pilot mode of
the receiver is enabled
Disable the pilot
mode
of the
receiver
3 1
Chapter 5 Suggestions and
Maintenance
1. When the transmitter or the receiver will not be
used for a long time, please take out the batteries
from the battery compartment to prevent the
damage to the product from battery leakage.
2. Keep the transmitter and the receiver in the dry
place and avoid the direct sunshine.
3. Eliminate or minimize obstructions between the
transmitter and receiver to avoid the
interference.
4. In order to gain the optimal received quality,
please adjust the sensitivity of the transmitter
correctly.
5. Please clean the machine by dry soft cloth.Do
not clean the machine with gasoline, or other
chemical products.

Chapter 6 Technical Parameters
Receiver:
Number of Channels 6
Frequency Range 854MHZ —— 865MHZ
Frequency Response 100HZ —— 12KHZ
System Distortion <1%
Signal/Noise Ratio >85dB
Power Two 1.5V AA batteries
Battery Life
Dimensions 82 * 62 * 21 mm
Physical weight（the
batteries`are excluded.）
Environmental Temperature
-20 —— 60 ℃
>70dB
Adjacent Channels
Rejection
>200Mw (32Ω)
Output Power of
the earphone
>20 hours( influenced
by the volume.)
83 g
32
Transmitter:
Modulation FM
Frequency Range 854MHZ —— 865MHZ
Output Power 10mW
Frequency Response 100HZ —— 12KHZ
System Distortion <1%
Power Two 1.5V AA batteries
Battery Life >20 hours
Dimensions 82 * 62 * 21 mm
Physical weight（the
batteries`are excluded.
）
En vir onmental Temperature -20 —— 60 ℃
73 g