Owner’s Manual ALD-800 Multi-Channel RF Wireless Assistive Listening System
Contents Introduction.............................................................................................................................. 2 ALD-800 Transmitter................................................................................................................ 3 Confirming Correct Installation................................................................................................. 4 ALD-800 Receiver Operating Instructions..........................................................
ALD-800 Transmitter Compact RF transmitter operating within the 72-76 MHz band designated for auditory assistance frequencies by the FCC. • Eight factory switchable channels • Input for line level audio • Input for microphone • Audio input gain control • Automatic level control • Extendible antenna • AC-ALD800 9VDC regulated power supply adapter supplied • LED power on and audio modulation indicators Setting Up the Transmitter Your Nady ALD-800 requires minimum installation.
Confirming Correct Installation The transmitter’s TX LED (6) will flash when a microphone or line level signal is broadcast by the transmitter. If “TX” does not flash, turn the audio input gain control clockwise. This will increase audio level and cause “TX” to flash along with the program source. When “TX” is flashing, the transmitter is broadcasting properly. Test the transmitter with an ALD-800 receiver. This procedure is explained in the receiver instructions.
ALD-800 Receiver Operating Instructions Pocket-sized RF receiver for personal listening assistance.
ALD-800 Receiver (Front Panel) ALD-800 Receiver (Top Panel) 2 1 6 4 3
Architects and Engineering Specifications ALD-800 Transmitter ALD-800 Receiver The transmitter operates on the 72-76 MHz auditory assistance frequencies. Transmitted field strength shall not exceed 8000 µV/m at 30 meters. The operating frequency is factory selectable to eight different channels by means of an internal switch. The receiver operates on a single frequency in the 72-76 MHz auditory assistance band.
Specifications Overall System Performance Frequency Response Signa-to-Noise Ratio Total Harmonic Distortion RF Carrier Frequencies Frequency Stability Modulation Operating Range 100 Hz-15KHz ± 3 dB 60 dB < 0.5% Eight channels between 72-76 MHz Channel AA:72.1, BB: 72.3, CC: 72.5, DD: 72.7, EE: 72.9, FF:75.5, GG: 75.7, HH: 75.9 Better than .
Service Information In the U.S. If you are experiencing operational problems with your system, please refer to the Support page at www.nady.com for assistance. Should your wireless system require service, please contact the Nady Service Department at (510) 652-2411 to obtain a Return Authorization (R/A) Number and service quote (if out of warranty). Make sure the R/A Number is clearly marked on the outside of the package that you are returning.
One-Year 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. will repair or replace the unit free of charge, subject to verification of the defect or malfunction upon return to Nady Systems.
6701 Shellmound Street | Emeryville, CA USA 94608 T 510.652.2411 | F 510.652.5075 | www.nady.
