Instruction/ maintenance manual of the product ALD-800 Nady Systems
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ALD-800 OWNER’S MANUAL Multi-Channel RF Wireless Assistive Listening System .
Contents 2 Introduction ............................................................................................................................. 2 ALD-800 T ransmitter ........................................................................
ALD-800 T ransmitter Compact RF transmitter operating within the 72-76 M Hz band des ignated for auditory assistance frequencies by the FCC. Eight factory switchable channels • Input for l ine level a udio • Input for microphone • Audio input gain control • Automatic level control • Extendible antenna • AC-ALD800 9 VDC regulat ed power • supply adapter supplied LED power o n and audio • modulation indicators Setting Up the T ransmitter Y our Nady ALD-800 requires minimum installatio n.
4 Conﬁrming Correct Installation The transmitter’ s TX LED (6) will ﬂash when a microphone or line level signal is broadcast b y the trans mitter . If “TX” does not ﬂash, t urn the aud io input ga in control clockwise. This will increase audio level and cause “ TX” to ﬂash along with the program sou rce.
ALD-800 Receiver Operating Instructions 5 Pocket-size d RF receiv er for pers onal listening assistance. Any number of ALD-800 receivers c an be • used with a single ALD-800T transmitter Ultra compact and lightweight • Preset to o ne of eight auditory • assistance channels Provides up to 130 dB SPL for • hearing assistance V olume control adjust • Antenna integral with earphone cord • Mini binaur al EB-800 e arbud • earphones included LED “power on” indicator • Accepts standard 9V alkaline battery • Powering The Receiver Install a 9V battery in Battery Compartment (1) , ob serv ing polarity .
6 ALD-800 Receiver (Front Panel) ALD-800 Receiver (T op Panel) 2 1 4 3 .
7 Architects and Engineering Speciﬁcations ALD-800 T ransmitter The transmitter operates on the 72-76 MHz audi tory as sist ance fr eque ncie s. T ransmit ted ﬁeld str eng th s hall no t ex ceed 80 00 µ V/m at 3 0 me ter s. T he o per atin g fr equ ency is factory selectable to eight different channels by means of an internal switch.
Speciﬁcations OVERALL SYSTEM PERFORMANCE Frequency Response 100 Hz-15KHz ± 3 dB Signa-to-Noise Ratio 60 dB T otal Harmonic Distortion < 0.5% RF Carrier Frequencies Eight channels between 72-76 MHz Channel AA:72.1 , BB: 72 .3, CC: 72.
9 Service Information In the U.S. If you are experiencing operational problems with your system, please refer to the Support page at ww w .nady .com for assistanc e. Should y our wireles s system re quire service, pl ease contac t the Nady Service Dep artment at (510) 652-2 411 to obta in a Return Authorizati on (R/A) Nu mber and se rvice quote (if out of warranty).
One-Y ear Limited Warranty Nady Systems, Inc. warrants to the original consumer purchaser (U.S.A only) that the unit is free from any defects in material or workmanship for a period of one year from the date of original retail purchase. If any such defect is discovered within the warranty period, Nady Systems, Inc.
6701 Shellmound Street | Emeryville, CA USA 94608 T 510.652.2411 | F 510.652.5075 | www .nady .com .
An important point after buying a device Nady Systems ALD-800 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
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If you already are a holder of Nady Systems ALD-800, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Nady Systems ALD-800.
However, one of the most important roles played by the user manual is to help in solving problems with Nady Systems ALD-800. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Nady Systems ALD-800 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center