Listen Technologies LR-400 User manual

LR-400 Page 1
Listen Technologies Corporation All rights reserved 91707
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
LR-400 Portable Display FM
Receiver
•Superior Audio Quality – 80 dB (70 dB with 863 MHz)
signal-to-noise ratio, setting the industry’s sound quality
standard.
•A choice between 57 channels (17 channels with 863 MHz),
complete antenna and accessory options make Listen products
ideal for a wide range of applications.
•100 % Digital – Listen receivers are digitally-tuned so transmission
won’t drift; assurance that when you select a channel, it stays
on the channel.
•Uses standard alkaline or NiMH batteries.
•Built in SmartCharge™ won’t allow batteries to overcharge.
Charging circuitry is conveniently built into Listen’s receivers;
never worry about unplugging a transformer at a certain time.
•Transformer charging plug or for the ultimate in convenience
drop in charging contacts.
•Limited Lifetime Warranty with hassle-free support.
LR-400-072/216
The FM receiver shall be capable of receiving on 57 wide and
narrow band channels. The receiver shall have a SNR of 80 dB or
greater. The receiver shall be capable of seeking channels. The
device shall have a squelch. The device shall have an audio
frequency response of 50 Hz to 15 KHz, ± 3 dB at 72 MHz and
50 - 10 kHz (±3dB) at 216 MHz. The device shall incorporate a
stereo headset jack that allows the user to plug in either a mono
or stereo headset and listen to audio normally. The device shall
incorporate an LCD display that indicates channel, battery level,
low battery, battery charging, RF signal strength and channel lock
status. The unit shall operate off of 2 AA batteries. The receiver shall
incorporate automatic battery charging circuitry for recharging
of NiMH batteries. The device shall have a switchable option for
the use of (2) alkaline or (2) NiMH batteries. The Listen LR-400-072 or
/5LVVSHFLÀHG
LR-400-863
The FM receiver shall be capable of receiving on 17 wide band
channels with a SNR of 70dB or greater. The device shall be able
to be locked on a single channel. The receiver shall be capable
of seeking channels. The device shall have an adjustable squelch.
The device shall have an audio frequency response of 50 Hz to 15
KHz, ±3 dB. The device will incorporate a stereo headset jack that
allows the user to plug in either a mono or stereo headset. The
device shall incorporate an LCD display that indicates channel,
battery level, low battery, battery charging, and RF signal strength.
The receiver shall be able to function in both DX and Local mode.
The unit shall operate off of 2 AA batteries. The receiver shall
incorporate automatic battery charging circuitry for recharging
of NiMH batteries. The device shall have a switchable option for
the use of (2) alkaline or (2) NiMH batteries.The Listen LR-400-863 is
VSHFLÀHG
Requires a type of ear piece and (2) AA batteries.
LA-161 Single Ear Bud
LA-162 Stereo Ear Bud
LA-164 Ear Speaker
LA-165 Stereo Headphones
LA-166 Neck Loop
LA-170 Behind-the-Head Stereo Headphones
LA-361 High Capacity AA Alkaline Batteries (2)
LA-362 Rechargeable AA NiMH Batteries (2)
LR-400-072
LR-400-216
LR-400-863
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Requires
LR-400 Portable Display FM Receiver
Owner’s manual (72 MHz & 216 MHz)
Quick Reference Card (863 MHz)
Limited Lifetime Warranty Program Card (863 MHz)
FM System Design Guide and Manual Card (863 MHz)
Includes
LT-800 Stationary FM Transmitter
LT-700 Portable FM Display Transmitter
Used With
+LJKOLJKWV
The LR-400 Portable Display FM Receiver is a lower cost digital
display receiver. It has exceptional audio quality as Listen’s
full-featured receivers and the same convenient recharging
options. The LR-400 can receive up to 17 wide band channels
along with 40 narrow bands (72 MHz), 19 wide band with 38
narrow band (216 MHz) and 17 wide band (863 MHz) channels.
The LR-400 has a digital display to monitor channel selection,
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if it blinks while pushing SEEK.
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LR-400 Page 2
Listen Technologies Corporation All rights reserved 91707
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
1. An earphone jack (3.5 mm) accepts either mono or stereo headsets. Receiver antenna is built into the
earphone cord, eliminating additional wires while maximizing receiver effectiveness.
2. Multifunction LED indicates power on, if batteries are low, if the unit is locked on a channel when SEEK is
pressed and charging status.
3. Easy on/off volume control.
4. Look&Listen™ LCD Display shows channel selection, channel lock and battery level.
6HHNVWRÀQGEHVWDYDLODEOHEURDGFDVW$OVRXVHGWRDGMXVWDEOHVTXHOFKLQVWHSVPXWHVDXGLRRQORVVRI5) 
signal.
6. Uses two AA batteries. Selectable to use either alkaline or Listen’s advanced NiMH Rechargeable
AA Batteries. SmartCharge™ incorporated into receiver makes sure each unit receives the most
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7. When enabled, SQ provides highest audio quality available in its product category. SQ can be disabled for
compatibility with other assistive listening equipment.
8. Digitally tuned with UP, DOWN, and SEEK buttons behind manually lockable door. Electronically lock on
channel by holding the SEEK button down 5 seconds to prevent tampering.
9. Manually lockable battery compartment door.
10. Charging plug port.
11. Contact points for Listen’s drop in charging cases.
12. Exclusive belt clip “loop” prevents unit from slipping off belt or strap.
Product Features LR-400-072/216
7
4
6
5
123
10
9
8
11
12
9

LR-400 Page 3
Listen Technologies Corporation All rights reserved 91707
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
1. An earphone jack (3.5 mm) accepts either mono or stereo headsets. Receiver antenna is built into the
earphone cord, eliminating additional wires while maximizing receiver effectiveness.
2. Multifunction LED indicates power on, if batteries are low, if the unit is locked on a channel when SEEK is
pressed and charging status.
3. Easy on/off volume control.
4. Look&Listen™ LCD Display shows channel selection, channel lock and battery level.
6HHNVWRÀQGEHVWDYDLODEOHEURDGFDVW$OVRXVHGWRDGMXVWVTXHOFKLQVWHSVZKLFKPXWHVDXGLRRQORVVRI5)
signal.
6. Uses two AA batteries. Selectable to use either alkaline or Listen’s advanced NiMH Rechargeable
AA Batteries. SmartCharge™ incorporated into receiver makes sure each unit receives the most
EHQHÀFLDOFKDUJH
7. Digitally tuned with UP, DOWN, and SEEK buttons behind manually lockable door. Electronically lock on
channel by holding the SEEK button down 5 seconds to prevent tampering.
8. Manually lockable battery compartment door. 10. Contact points for Listen’s drop in charging cases.
9. Charging plug port.
10. Contact points for Listen’s drop in charging cases.
11. Exclusive belt clip “loop” prevents unit from slipping off belt or strap.
Product Features LR-400-863
13
2
4
5
6
9
8
7
11
10
8

LR-400 Page 4
Listen Technologies Corporation All rights reserved 91707
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
Accessories
LA-362
Headphones
LA-161 Single Ear Bud
LA-162 Stereo Ear Bud
LA-164 Ear Speaker
LA-165 Stereo Headphones
LA-166 Neck Loop
LA-170 Behind-the-Head Stereo Headphones
3RZHU&KDUJLQJ6XSSOLHV
LA-202 Power/Charging Supply for FM Portable Products
LA-208-01 7.5 VDC Power/Charging Supply for FM Portable Products (North America)
LA-208-02 7.5 VDC Power/Charging Supply for FM Portable Products (Asia, UK)
LA-208-03 7.5 VDC Power/Charging Supply for FM Portable Products (Euro)
Cables
LA-265 Consumer Camcorder Cable
LA-266 Professional Camcorder Cable
/$6DFULÀFLDO&DEOH
&KDUJLQJ&DUU\LQJ&DVHV
LA-311-01 16-Unit Portable FM Product Charging/Carrying Case (North America)
LA-311-02 16-Unit Portable FM Product Charging/Carrying Case (Asia, UK)
LA-311-03 16-Unit Portable FM Product Charging/Carrying Case (Euro)
LA-317-01 4-Unit Portable FM Product Charging/Carrying Case (North America)
LA-317-02 4-Unit Portable FM Product Charging/Carrying Case (Asia, UK)
LA-317-03 4-Unit Portable FM Product Charging/Carrying Case (Euro)
LA-321-01 8-Unit Portable FM Product Charging/Carrying Case (North America)
LA-321-02 8-Unit Portable FM Product Charging/Carrying Case (Asia, UK)
LA-321-03 8-Unit Portable FM Product Charging/Carrying Case (Euro)
&KDUJLQJ&DUU\LQJ&DVHVZLWK5HPRYDEOH/LG
LA-323-01 4-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (North America)
LA-323-02 4-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Asia, UK)
LA-323-03 4-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Euro)
LA-324-01 8-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (North America)
LA-324-02 8-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Asia, UK)
LA-324-03 8-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Euro)
LA-325-01 16-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (North America)
LA-325-02 16-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Asia, UK)
LA-325-03 16-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Euro)
Miscellaneous
LA-306 Soft Case (72 MHz & 216 MHz only)
LA-319 Protective Pouch for Portable FM Products
/$&RQÀJXUDEOH&DUU\LQJ&DVH
LA-330 Portable Unit Lanyard
LA-361 High Capacity AA Alkaline Batteries (2)
LA-362 Rechargeable AA NiMH Batteries (2)
LA-170
LA-321
LA-324
LA-202
LA-266

LR-400 Page 5
Listen Technologies Corporation All rights reserved 91707
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
6SHFLÀFDWLRQV LR-400-072 LR-400-216
RF
RF Frequency Range 72.025 - 75.950 MHz 216.0125 - 216.9875 MHz
Number of Channels 17 wide band, 40 narrow band 19 wide band, 38 narrow band
Sensitivity .6 uV typical, 1 uV maximum for 12dB sinad
Frequency Accuracy VWDELOLW\ÝWRÝ)ÝÝ&
Antenna Uses earphone cable
Squelch Programmable in 20 steps, automatic on loss of RF signal
Compliance FCC Part 15, Industry Canada FCC Part 90, Industry Canada
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Audio
System Frequency Response 50Hz - 15kHz (+/-3db) 72 Mhz 50Hz - 10kHz (+/-3db) 216 MHz
System Signal to Noise Ratio SQ enabled: 80dB; SQ disabled 60dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Output 3.5 mm connectors, unbalanced, 0dBu nominal output level, 16 mW maximum,
impedance 32 Ohms
Controls
User Controls Volume, channel UP/DOWN, SEEK
Set up Controls
(battery compartment) Alkaline/NiMH batteries, SQ enable/disable
Programming Channel lock, squelch
Indicators LED Red, illuminated when unit is on. Flashes when batteries are low, or to indicate charging.
Flashes when locked and SEEK is pushed.
Display Channel Designation, lock status, signal strength indication
Power
Battery Type Two AA batteries, alkaline or NiMH
Battery Life (Listen Batteries) 30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only) Fully automatic, 13 hours
Power Supply I/P 120VAC; O/P 7.5VDC 250 mA; Drop in contact points for use with charging cases.
Power supply not included (LA-202)
Power Supply Connector 2.3 mm OD by 0.7 mm ID, barrel type connector, 7.5 VDC, center positive <250 mA.
Drop in contact points for use with Listen charging cases.
Power Supply Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
Physical
Dimensions H x W x D 5.0 x 3.0 x 1.0 in. (13 x 7.6 x 2.5 cm)
Color Dark Grey with white silk screening
Unit Weight 3.9 oz. (111 g)
Unit Weight with batteries 5.8 oz. (164.4 g)
Shipping Weight 1.0 lb. (0.45 kg)
Door Manually lockable. SEEK behind the door.
Environmental Temperature - Operation ÝWRÝ)ÝWRÝ&
Temperature - Storage ÝWRÝ)ÝWRÝ&
Humidity 0 to 95% relative humidity, non-condensing
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LR-400 Page 6
Listen Technologies Corporation All rights reserved 91707
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
Indicators LED Red, illuminated when unit is on. Flashes when batteries are low, or
charging. Flashes when locked and SEEK is pushed.
LCD Display Channel Designation, lock status, signal strength indication, battery life
Power
Battery Type Type: 2 AA batteries, Alkaline or NiMH
Battery Life (Listen Batteries) 20 hours alkaline (LA-361), 10 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only) Fully automatic, 13 hours maximum
Power Supply (LA-208) 7.5VDC, center positive 300mA. Drop in contact points for use with
charging cases. Power supply not included (LA-208).
Power Supply Connector 2.3 mm OD by .7 mm ID, barrel type
Power Supply Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
Physical
Dimensions (H x W x D) 5.0 x 3.0 x 1.0 in (13.0 x 7.6 x 2.5 cm)
Color Dark Grey with white silk screening
Unit Weight 3.9 oz. (111 g)
Unit Weight with batteries 5.8 oz.. (164 g)
Shipping Weight 1.0 lbs. (0.45 kg)
Door Manually lockable. Up, down, and power buttons through door. Other
controls behind door (see controls)
Environmental Temperature - Operation 14ÝÝ)-10Ý- 40Ý& Temperature - Storage -4ÝÝ)-20Ý- 50Ý&
Humidity 0 to 95% Relative Humidity, non condensing
6SHFLÀFDWLRQV LR-400-863
RF
RF Frequency Range 863.050 - 864.950 MHz
Number of Channels 17 Wideband
Sensitivity .6uV typical, 1 uV maximum for 12 dB sinad
Frequency Accuracy VWDELOLW\WRÝÝ&
Antenna Integrated External Antenna
Squelch Programmable in 20 step, automatic on loss of RF signal
Compliance CE, ETSI, RoHS
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Audio
System Frequency Response 50Hz - 15kHz (+/-3db)
System Signal to Noise Ratio 70db (A-Weighted)
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Output 3.5 mm connector, unbalanced, 0dBu nominal output level, 16 mW
maximum, impedance 32 Ohms
Controls
User Controls Channel up/down, SEEK, volume
Set up Controls
(battery compartment) NiMH/Alkaline battery switch
Programming Channel Lock, DX/Local, squelch
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LR-400 Page 7
Listen Technologies Corporation All rights reserved 91707
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
QWhat is the difference between the LR-400 and the LR-500?
AThe LR-500 gives the user an opportunity to lockout unused channels and has the controls on the outside
of the front door.
QCan the LR-400 be used with multiple transmitters?
QHow many receivers can I have in a system?
AAs many as you need, the number is endless
AYes. The LR-400 can be used with multiple transmitters, but unlike the LR-500, it cannot be programmed to
lock out channels.
QWhat is the function of SQ?
ATo reduce noise of our systems, Listen now offers a noise reduction technology called ListenSQ™
(on 72 MHz and 216 MHz only). Both the transmitter and receiver must have SQ on to achieve the desired
results. If you are planning to use this product with older Listen systems or equipment not manufactured by
Listen, you should disable SQ.
Frequently Asked Questions
QWhat is the warranty of Listen receivers?
ALimited lifetime warranty. The following cases will void the warranty:
• Misuse, dropping, or any other noticeable cosmetic damage
• Charging alkaline batteries instead of NiMH
• Overheating the charging process by closing the lid on the charging case.
AAlkaline batteries last 30 hours. NiMH rechargeable batteries last 15 hours (72 MHz and 216 MHz). With 863 MHz,
Alkaline batteries last 20 hours and NiMH rechargeable batteries last 10 hours.
QHow long do the batteries last on the LR-400 receiver?