Listen LT-700-072 Manuale utente
Dear Valued Customer,
Thank you for choosing Listen! All of us at Listen are dedicated to providing
you with the highest quality products available. We take great pride in their
outstanding performance because we care that you are completely
satised. That’s why we independently certify them to the highest quality
standards and back them with a limited lifetime guarantee. We stand ready
to answer any questions you might have during installation or in the operation
of our products. Should you experience any problems whatsoever with your
Listen products, we are ready to help you in any way we can with prompt,
efcient customer care. Because at Listen, it’s all about you! And should you
have any comments on how we might improve our products or our
service, we’re here to listen.
Here’s how to reach us:
+1.801.233.8992
+1.800.330.0891 North America
+1.801.233.8995 fax
www.listentech.com
Thank you and enjoy your listening experience!
Best regards,
Russell Gentner and the Listen Team
• In the few instances where repairs were needed, 99% of all clients indicated that they were happy with
repair turn-around-times and 85% of the time, clients were without their product for less than 10 days!
• Overall client satisfaction of working with Listen was rated 4.8 out of 5.
• “ Please continue with your excellent attitude toward customer satisfaction. You guys are great!”
• “I’ve never had such good service from any company. Keep up the good work!”
• “You stand behind your product wonderfully.”
Assistive Listening • Language Interpretation • Soundeld • Tour Group • Conferencing
1
Table of Contents Specications Setup Instructions Operating Instructions RF Reception Information
Channel Selection
Package Contents Quick Reference Listen SQ™ Compatibility Charts
Design Guide Table of Contents
Package Contents Specications Quick Reference Setup Instructions Operating Instructions Channel Selection Listen SQ™ RF Reception Compatibility Charts Information
Package Contents 3
72/216 MHz Specications 4
863 MHz Specications 5
Quick Reference 6
Setup Instructions 8
Operating Instructions 10
Programming Instructions 11
Charging Batteries 12
Wall Transformer Operation 13
Channel Selection 14
Listen SQ™ 15
RF Reception Maximization Strategies 16
72 MHz Frequency Compatibility Table 17
216 MHz Frequency Compatibility Table 18
Troubleshooting 19
Compliance Notice 21
FCC Statement 21
Warranty 22
Contact Information 22
Optional Accessories 23
LT-700 Table of Contents
3
Package Contents
Package Contents
Package Contents
LT-700 Package Contents
Optional Accessories
See page 23
Listen Part Number
LT-700-072 (72 MHz)
LT-700-216 (216 MHz)
LT-700-072/216 Contents
• LT-700-072 (72 MHz) or
• LT-700-216 (216 MHz)
LT-700-863 Contents
• LT-700-863 (863 MHz)
Listen Part Number
LT-700-863 (863 MHz)
4
Specications
Specications
Package Contents
Package Contents
Specications
LT-700 Specications
Architectural Specications
Specification
Specications are subject to change without notication
Specication LT-700-072 LT-700-216
RF
RF Frequency Range 72.025 - 75.975 MHz 216.025 - 216.987 MHz
Number of Channels 57 (17 wide, 40 narrow) 57 (19 wide, 38 narrow)
Sensitivity .6uV typical, 1 uV maximum for 12dB SINAD
Frequency Accuracy ±.005% stability 32 to 122° F (0 to 50°C)
Transmitter Stability 50 PPM
Transmission Range From 0 to 50 ft. (15.2 m) to 150 ft. (45.7 m)
Output Power Less than 10mW Less than 100mW
Antenna Uses microphone cable
Antenna Connector 3.5 mm connector
Compliance FCC Part 15, Industry Canada
** All system specications are wireless end-to-end
Audio
System Frequency Response 63 Hz - 15 kHz (± 3dB) 63 Hz - 10 kHz (±3dB)
System Signal to Noise Ratio
(A-weighted) SQ enabled: 80dB; SQ disabled 60dB SQ enabled: 80dB; SQ disabled 50dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Microphone Input Unbalanced, tip of 3.5 mm connector, (55 dBu nominal, -32dBu maximum, impedance 21 Ohms)
Microphone Sensitivity Three position switch: high, middle and low; 6dB increments
Line Input Unbalanced, ring of 3.5 mm connector, (-10dB nominal input level adjustable, +4dBu maximum, impedance
10k Ohms)
Phantom Power 3VDC
Controls
Set-up Controls, behind the
door Mic sensitivity, NiMH/alkaline battery, SQ enable/disable
User Controls Power, mute, channel UP and DOWN
Programming Unit can be programmed so that only desired channels are displayed to the user; channel selection can be
locked by holding the UP or DOWN button 5 seconds.
Indicators LED Red, illuminates when unit is on. Flashes when batteries are low, or to indicate charging. Flashes 2x when
muted
LCD Display Channel, lock status, programming
Power
Battery Type Two AA batteries, alkaline or NiMH
Battery Life (Listen batteries) 15 hours alkaline (LA-361), 8 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only) Fully automatic, 13 hours
Power Supply Connector 2.3 mm OD by 0.7 mm ID, barrel type connector. 7.5VDC, center positive 300mA. Drop in contact points for
use with Listen charging cases.
Compliance UL Listed
Physical
Dimensions 3.0 x 1.0 x 4.25 in. (7.6 x 2.5 x 13 cm) W x D x H
Unit Weight 3.9 oz. (111 gm)
Unit Weight with batteries 5.8 oz. (164.4 gm)
Shipping Weight 1.0 lbs. (0.45 kg)
Door Manually lockable. UP, DOWN and power through door, other controls behind door (see Controls above)
Environmental
Temperature - Operation 14 to 104° F (-10 to 40°C)
Temperature - Storage -4 to 122° F (-20 to 50°C)
Humidity 0 to 95% relative humidity, non-condensing
The portable FM transmitter shall be capable of broadcasting on 57 channels. The unit shall incorporate a
microphone sensitivity switch. The device shall broadcast on both wide and narrow band channels with a
SNR of 80dB or greater. The device shall have an audio frequency response of 50 Hz to 15 kHz, ±3dB at 72
MHz, or of 50 Hz to 10 kHz, ±3dB at 216 MHz. The device will incorporate a mute switch. The battery door
shall be capable of being mechanically locked. The device shall incorporate an LCD display that indicates
channel, battery level, low battery, battery charging, channel lock, program mode, channel lock status
and RF signal strength. The portable transmitter shall incorporate automatic battery charging circuitry for
recharging of NiMH batteries. The Listen LT-700 is specified.
5
Specications
Package Contents
Package Contents
Specications
LT-700 Specications
Architectural Specications
The portable FM Transmitter shall be capable of broadcasting on 17 channels Channel tuning shall be capable
of being locked. The transmitter shall have a SNR of 70 db or greater. The output power shall be adjustable to
quarter, half or full. The device shall have an audio frequency response of 50 Hz to 15 kHz, +/-3db. The device
shall incorporate a microphone sensitivity switch. The device shall incorporate a mute switch. The unit shall
operate off of 2 AA batteries. The battery door shall be capable of being mechanically locked. The device
shall incorporate an LCD display that indicates battery level, channel, channel lock, low battery, battery
charging, programming, and RF signal strength. The portable transmitter shall incorporate automatic battery
charging circuitry for recharging of NiMH batteries. The Listen LT-700-863 is specied.
Specications LT-700-863
RF
RF Frequency Range 863.050 - 864.950 MHz
Number of Channels 17 Wideband
Frequency Accuracy +/-.005% stability 0- 50C
Transmitter Stability 50 PPM
Output Power 10mW maximum (adjustable)
Antenna Integrated External Antenna
Compliance CE, ETSI, RoHS
Audio
System Frequency Response 50Hz - 15kHz (+/-3db)
System Signal to Noise Ratio 70db (A-Weighted)
System Distortion <2% THD @ 80% modulation
Microphone Input Unbalanced, tip of 3.5mm connector, -20 dbu nominal, -30 dbu maximum, impedance 21 ohms
Microphone Sensitivity Three position switch: high, middle, and low; 6db increments
Line Input Unbalanced, ring of 3.5mm connector, -10dbu nominal input level, -3dbu
maximum, impedance 10K ohms
Microphone power 3VDC Bias
Controls
User Controls Power, mute, channel up/down, volume
Set-up Controls
(battery compartment) Mic sensitivity, NiMH/alkaline battery switch
Programming Channel Lock Out, Channel Lock On, RF Power
Indicators
LED Red, illuminated when unit is on. Flashes when batteries are low, or to indicate charging. Flashes quickly
when muted.
RF Power Indicated on the LCD (low, mid, high)
LCD Display Channel Designation, lock status, RF power level, programming
Power
Battery Type Type: 2 AA batteries, Alkaline or NiMH
Battery Life (Listen batteries) 15 hours alkaline (LA-361), 8 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only) Fully Automatic, 14 hours maximum
Power Supply (LA-208-03) 7.5VDC, center positive 300 mA. Drop in contact points for use with charging cases. Power supply not
included (LA-208)
Power Supply Connector 2.3 mm OD by .7mm 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 (111g)
Unit Weight with batteries 5.8 oz (164g)
Shipping Weight 1.0 lbs. (0.45kg)
Door Manually Lockable. Up, down, and power buttons through door. Other controls behind door (see controls)
Environmental
Temperature - Operation -10C (14F) to +40C (104F)
Temperature - Storage -20C (-4F) to +50C (122F)
Humidity 0 to 95% Relative Humidity, non condensing
6
Quick Reference
Quick Reference
Specications
Package Contents
Package Contents
Quick Reference
LT-700 Quick Reference
LT-700 Front
3.5mm Input Jack
A Listen microphone or line
level cable connects here.
MUTE / TALK switch
(more information on page 7)
Power Switch
Press PWR switch to turn
unit on. Press and hold
to turn unit off. When in
PROGRAM mode, this switch
is used to toggle the lock out
(L/O) mode for a channel.
Press and hold both buttons for 5
seconds to enter PROGRAM mode.
The PGM icon will appear in the
display. To exit PROGRAM, let unit
sit idle for 5 seconds.
Use UP and DOWN buttons to
select a channel. Press and hold
either button for 5 seconds to lock
the channel. Press and hold either
button again to unlock.
Look & Listen Display™
The display shows level, channel,
battery status, PROGRAM mode,
whether a channel is locked, and
whether a channel is locked out
from selection (PROGRAM mode).
See close-up below.
When dots are illuminated, the
microphone is active. If this
display does not appear, the
microphone is muted.
Indicates the
currently tuned
channel
Indicates the unit is in
PROGRAM mode. To enter
PROGRAM mode, press and
hold the UP and DOWN keys
until the PGM icon appears in
the display. To exit PROGRAM
mode, let the unit sit idle for 5
seconds.
If the padlock icon is
visible, the channel is
locked. Press and hold
either the UP and DOWN
button for 5 seconds to
lock or unlock.
When in the PROGRAM
mode, L/O indicates
whether a particular
channel is locked out.
Battery level indicator. The indicator
flashes, along with the red LED on top of
the unit, to alert you when the
battery is low and needs to be charged
or changed. (see information below)
All three segments
showing: The batteries
are at 50% or greater
capacity.
One segment showing:
Your batteries less than 25% capacity.
When this segment begins flashing
along with the LED on top of the unit,
you should immediately change your
batteries or recharge them (if using
NiMH batteries).
Two segments showing:
The batteries are at
25-49% capacity.
LT-700 Battery Indicator
Stereo-Red
Mono-White
Video-Yellow
Stereo-Red
Mono-White
Video-Yellow
Stereo-Red
Mono-White
Video-Yellow
Stereo-Red
Mono-White
Video-Yellow
LT-700 Look &
Listen Display
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