Instrukcja obsługi Listen Technologies LR-100

Instrukcja obsługi dla urządzenia Listen Technologies LR-100

Urządzenie: Listen Technologies LR-100
Kategoria: Wzmacniacz stereo
Producent: Listen Technologies
Rozmiar: 1.05 MB
Data dodania: 2/9/2014
Liczba stron: 24
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Streszczenia treści
Streszczenie treści zawartej na stronie nr. 1

User’s Manual
LR-100 Stationary Receiver / Power Amplifier
Don’t miss a single sound. Listen.
R
www.ListenTech.com
Listen Technologies Corporation
8535 South 700 West, Suite A
Sandy, Utah 84070-2515 USA
Telephone: +1.801.233.8992
Toll-Free (USA): 1.800.330.0891
Fax: +1.801.233.8995
E-mail: info@listentech.com
V.030825. Listen and the Listen logo are registered trademarks of Listen Technologies Corporation. Document #LM-100
Copyright © 2003 Listen Technologies Corporation. All Rights Reserv

Streszczenie treści zawartej na stronie nr. 2

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com For a complete description of connectors and controls, please see page 4 of this manual Architectural Specifications: The FM stationary receiver - power amplifier (receiver) shall be capable of receiving on 57 wide and narrow band channels in the frequency ranges of either 72 MHz or 216 MHz. The receiver shall be programmable to electronically lock out unneeded channels. The receiver shall have an adjustable squelch with an LED

Streszczenie treści zawartej na stronie nr. 3

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Table of Contents Architectural Specifications .............................................................. page 2 Specifications .................................................................................... page 3 Front and Rear Panel Descriptions ................................................... page 4 System Block Diagram ..................................................................... page 6 Import

Streszczenie treści zawartej na stronie nr. 4

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com LR-100 Front Panel - Connections and Controls MUTE SEEK BUTTON When illuminated, the OUTPUT Press to find the next strongest audio is muted. MUTE is signal. Also used to lock / unlock activated and deactivated by a channel selection; press and hold SQUELCH INDICATOR momentary closure to ground on for 5 seconds. Lock status is When adjusted properly, this the rear detachable terminal block indicated by padlock symbol in the indi

Streszczenie treści zawartej na stronie nr. 5

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com LR-100 Rear Panel - Connections and Controls SPEAKER CONNECTION Connect 4 ohm (or greater) speaker here BALANCED OUTPUT CONTROL Male XLR, 0 or -40 dBu nominal Remote control of UP, DOWN, and MUTE functions. All functions are momentary closures ANTENNA CONNECTION to common Attach supplied 90 degree helical antenna or optional remote antenna here. Uses standard 50 UNBALANCED AUXILIARY UNBALANCED OUTPUT ohm BNC connector INPUT pho

Streszczenie treści zawartej na stronie nr. 6

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com System Block Diagram Remote Control External Battery Speaker +12 VDC 3 4 5 6 7 8 1 2 Detachable Terminal Common Block Electronic Ground Switch Power On/Off Up External Power 115VAC Supply Mute LA-201 Down Power Supply Seek CPU Module Aux Speaker Listen LCD Display Output Remote 3.5MM Headphone Stereo Antenna SQ (Flexible helical On/Off Mic antenna provided) (internal) Male XLR Output Audio Processing Balanced Module RX Line 0

Streszczenie treści zawartej na stronie nr. 7

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Important Things to Note Before Starting Your Installation What is Squelch? The LR-100 is a radio receiver that receives an RF signal from either an LT-800 or LT-700 radio transmitter. Many radio receivers, including the LR-100, include a control called “squelch” that mutes the receiver’s output signal when there is no received RF signal. Without the squelch control, a strong noise is heard at the receiver whenever it is not rece

Streszczenie treści zawartej na stronie nr. 8

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Long cable runs can result in signal degradation due to “loss” characteristics of the cable. At 72 MHz, there is a loss of 2dB per 100 feet of cable and at 216 MHz, there is a loss of 5 dB per 100 feet of cable. (A 3dB loss means half of your power has been lost.) However, it is better to suffer coaxial power loss than to try to shoot your signal through obstacles! Obstacles, especially metal, can create drop-outs or reflectio

Streszczenie treści zawartej na stronie nr. 9

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Installation If you are using the LR-100’s power amplifier, make sure the unit is given sufficient room around the ventilation holes. If you are rack mounting the LR-100, use the optional LA-326 rack mounting kit. This kit allows for single and dual rack mounting, and comes with a security cover. For mounting on vertical or horizontal surfaces, use the optional L bracket mounting kit, part number LA-327. Powering the Unit Note:

Streszczenie treści zawartej na stronie nr. 10

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Installation - Detachable Terminal Block Detachable Terminal Block Wiring: Pin 1: Speaker + Pin 2: Speaker - Pin 3: Ground for Battery or Power Source connection Pin 4: +12VDC Battery or Power Source Pin 5: UP remote control function Pin 6: DOWN remote control function Pin 7: MUTE remote control function Pin 8: Common for remote control function Installation - Audio Connections OUTPUT Audio The OUTPUT audio section is composed of

Streszczenie treści zawartej na stronie nr. 11

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com What is Squelch? See page 7. Balanced Audio Output When connecting to the XLR balanced OUTPUT, use the pin out show below. If the output is unbalanced, either use the unbalanced phono connectors or wire the balanced XLR output as shown below with pins 3 and 1 wired together. The OUTPUT audio has a nominal output level of 0dBu. - 1. XLR pin out diagram for a balanced connection: 3 Pin 2 + 2 + Pin 3 – Pin 1 Shield 1 - 2. XLR pin o

Streszczenie treści zawartej na stronie nr. 12

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com AUXILIARY Input The LR-100 has an AUXILIARY input that allows for greater functionality of the unit for a variety of applications. The AUXILIARY input consists of a balanced input, combination connector (female XLR and 1/4 in) and two unbalanced phono connectors. All of these inputs are actively mixed together. Thus, any combination of input sources can be used. Input level is adjusted via the front panel trim pot labeled AUX L

Streszczenie treści zawartej na stronie nr. 13

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Example: If you have two 8-ohm speakers, you can connect these in parallel to pro- duce a 4-ohm load to the power amp. iii. The SPEAKER level control on the front panel adjusts the level of the speaker. iv. The front panel headphone jack is in parallel with the speaker level. Connect any mono or stereo headphone to this 3.5mm jack. Adjust level with the SPEAKER vol- ume knob. Installation – Antenna A properly installed antenna

Streszczenie treści zawartej na stronie nr. 14

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Installation – Remote Control The LR-100 can be programmed (see Set-up – Programming, page 17) so only used channels can be selected. For example: You are broadcasting material on channels A, E and F (72MHz). You would program the LR-100 so that it could only receive these channels. Thus, depression of the front panel UP, DOWN and SEEK would only allow you to select one of these three channels. The UP and DOWN functions can be

Streszczenie treści zawartej na stronie nr. 15

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Setup Understanding the LCD display The front panel LCD provides important information to the operation of the LR-100: Channel: This indicates the currently tuned channel. See “Which channel should I use?” below for more information and the Channel Selection Chart on page 22. RF Power: This indicates the relative power from the transmitter. You should maximize the level for best operation. Which channel(s) should I use? Your LR

Streszczenie treści zawartej na stronie nr. 16

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com selection chart on page 22) as long as the adjacent channel transmitter is at least 50% further away from an LR-100 than its own transmitter. Example: The transmitter for the LR-100 on channel E is 100 feet from the LR-100. The adjacent channel transmit- ter on channel D should be at least 150 feet away. Notes in regard to using 72MHz and 216MHz systems: i. 72MHz is a secondary frequency band. This means that other application

Streszczenie treści zawartej na stronie nr. 17

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Selecting SQ ON or OFF See “What is Listen SQ?” on page 6. If the transmitter that is broadcasting to the LR-100 is SQ capable, make sure the SQ switch for the transmitter and the LR-100 is turned ON. If not, the SQ switch should be turned OFF. Channel Selection Select the most appropriate channel by pressing the UP or DOWN button (see What Channel Should I Use? on page 15). You can optionally press the SEEK button and the uni

Streszczenie treści zawartej na stronie nr. 18

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com To set the squelch control: a. Turn the transmitter OFF. b. Listen to the receiver audio on the speaker or headphone. Turn the audio level down in the beginning. c. Adjust the squelch adjustment clockwise until the squelch LED goes off (not illumi- nated). You will hear radio noise now. This is the audio you want to squelch (mute) when the transmitter is off. d. Now adjust the squelch setting counter clockwise until it squelche

Streszczenie treści zawartej na stronie nr. 19

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Resetting After an Overload Condition In an overload condition, the LR-100 will go into a protective state to protect the unit and power supply from excessive current and heat. This condition will occur if the speaker termi- nals are shorted to each other or if they are shorted to the chassis for over 15 seconds. In this condition, the LR-100 will no longer function normally. If the LR-100 stops functioning nor- mally, do the f

Streszczenie treści zawartej na stronie nr. 20

R LR-100 Stationary Receiver / Power Amplifier www.ListenTech.com Troubleshooting The unit does not power up, or it has stopped operating. i. Ensure the power supply is connected properly. ii. The speaker terminals may be shorted (see page 19). The audio is muted occasionally. i. Check to see if the unit is squelching (indicated by the squelch LED). In this case, either improve the RF signal path or adjust the squelch setting for less squelch sensitivity. I hear noise coming from the receiver.


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