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User’s
Guide
ASSISTIVE LISTENING SYSTEMS
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2 Digital-1 User’s Guide Contents How to use Digital-1............3 Tuning...............................6 Frequency Chart.................8 Correcting Interference......9 Recharging........................10 Specifications.................12 Notice................................13 Compliance.....................14 Warranty...........................15 Contact Numbers..............18 Digital-1 User’s Guide, August 2002 (Rev. 1.1) ©2002 ClearOne, Inc. All rights reserved. Informatio
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e c wer Sour Digital-1 User’s Guide 3 o How to Use Digital-1 P The Digital-1 receiver operates on two AA-size batteries (alkaline or rechargeable Ni-Cad). To install the batteries, place your thumbs on either side of the pocket clip and slide the battery cover off. Note the polarity markings and insert the batteries as shown. Digital-1(back) Battery Cover Technical Support: 1 (219) 929-4127
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4 Digital-1 User’s Guide How to Use Digital-1 Operating Intructions: ❏ ❏ ❏ ❏ ❏ Step 1 Plug the earphone into the earphone jack. The earphone cable also acts as the receiver antenna. Extend the cable fully for the best reception and least interference. ❑ ❑ ❑ Step 2 ❑ ❑ Turn on the receiver by rotating the volume wheel. The red power LED will light up. This indicates that the receiver is ON and the batteries are properly charged. WARNING! To avoid harm to ears, keep all re
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Digital-1 User’s Guide 5 Digital-1 (top) Power ON/OFF Earphone LED Volume Jack (front) ❑ ❑ ❑ ❑ ❑ Step 3 Adjust the volume to the desired listening level. ✰ Note: Be sure to turn off the receiver when it is not in use. This will help preserve the battery charge. A white line will appear centered at the top of the thumb wheel when in the OFF position. Technical Support: 1 (219) 929-4127
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6 Digital-1 User’s Guide Tuning Channel Selection The Digital-1 receiver is digitally tuned. Once a channel is selected, no further adjustments are necessary. The factory preset for the Digital-1 receiver is channel 19 (72.95 MHz). The step-by-step instructions and diagrams below and on the facing page show you how to change the receiver’s preset. See page 8 for frequencies corresponding to other channels. ❑ Step 1 Remove the battery cover from the back of the receiver. ❑ Step 2
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Digital-1 User’s Guide 7 Channel Setting PB Board Rotary Switches 0 9 1 8 2 3 7 3 2 6 5 4 1 0 ❑ Step 3 Using a small, flathead screwdriver, turn the channel setting rotary switches to the desired channel number. The lefthand switch indicates the “ones” place. The right hand switch indicates the “tens” place. The example below shows the setting for channel 19. 0 9 1 8 2 3 7 3 2 6 4 1 5 0 Ones Tens Place Place Technical Support: 1 (219) 929-4127
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8 Digital-1 User’s Guide Frequency Chart Channel *Frequency Channel *Frequency 01 72.05 20 74.65 02 72.10 21 74.70 03 72.15 22 74.75 04 72.20 23 75.25 05 72.25 24 75.30 06 72.30 25 75.35 07 72.35 26 75.40 08 72.40 27 75.45 09 72.45 28 75.50 10 72.50 29 75.55 11 72.55 30 75.60 12 72.60 31 75.65 13 72.65 32 75.70 14 72.70 33 75.75 15 72.75 34 75.80 16 72.80 35 75.85 17 72.85 36 75.90 18 72.90 37 75.95 19 72.95 *Frequencies are in MHz Technical Support: 1 (219) 929-4127
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Digital-1 User’s Guide 9 Correcting Interference With any type of radio-frequency (RF) device, other RF sources can interfere with reception. Even the Assistive Listening Band is occasion- ally subject to use by other types of devices. To check for on-channel interference, take the Digital-1 receiver to the place where the interfer- ence is the worst and turn off the transmitter. The interfering signal should now become stronger. Set the TX-37A transmitter and the receivers to a dif
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10 Digital-1 User’s Guide Recharging The Digital-1 is designed for use with regular alkaline or rechargeable Ni-Cad batteries. Each receiver has two recharger contacts, one on each side (see the diagram below). Digital-1 (front) Recharger Contacts These contacts may be used in conjunction with Gentner’s BC-10A for quick and easy recharg- ing. Simply place the Digital-1 receiver in the BC-10A charger when not in use and it will auto- matically recharge for the next usage. Technical
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ormation: harging Inf tant Rec Digital-1 User’s Guide 11 Impor Fully depleted Ni-Cad batteries require approxi- mately 18 hours to recharge. Once charged, Ni-Cad batteries will power the Digital-1 for approximately 30 hours. Alkaline batteries will power the Digital-1 for approximately 40 hours. WARNING! Use ONLY Ni-Cad rechargeable batter- ies in the Digital-1 when using the BC- 10A battery charger. Alkaline batteries will damage the BC-10A. Also, do not exceed 60 hours of conti
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12 Digital-1 User’s Guide Specifications Digital-1 Dimensions: 2.63"/6.68 cm W x 3.5"/ 8.89 cm H x .75"/1.91 cm D Weight: 4 oz./113.4 g (dry) Frequency Range: 100–10,000 Hz Output Level: 140 mW into 32 Ohms Signal-to-Noise Ratio: >55 dB Distortion: < 2 percent Transmission Type: FM, medium bandwidth (60 kHz) RF Frequency Range: 37 Channels, 72–76 MHz Sensitivity: 0.8 uV typical, 1 mV max for 12 dB SINAD Controls: On-Off / Volume, Channel Selector (hidden) Earphone Jack: Standard 3.5
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Digital-1 User’s Guide 13 Notice Gentner Communications Corporation assumes no liability for improper use or operation of this equipment. The user is cautioned to operate the volume controls at the lowest acceptable level, and in a manner that will not cause damage to hearing. Ear pieces and accessories should be worn using good judgment and for their intended purpose. To avoid entanglement, the ear pieces and neck loops should be removed and stored promptly after use and before sle
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14 Digital-1 User’s Guide Compliance Tested to Comply with FCC Standards The Digital-1 complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference, and 2) This device must accept any interference received, including interference that may cause any undesired operation. IC Compliance This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) this devi
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Digital-1 User’s Guide 15 Warranty Gentner Communications Corporation (Manufacturer) warrants that this Assistive Listening System (ALS) product is free of defects in both materials and workmanship. Should any part of this equipment be defective, Manufacturer agrees, at its option, to: A. Repair or replace any defective ALS product, free of charge (except transportation charges), for a period of one year from the date of the original purchase, provided the owner returns the equipme
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16 Digital-1 User’s Guide THIS WARRANTY IS VOID IF: A. The equipment has been damaged by negligence, accident, act of God or mishandling, or has not been operated in accordance with the procedures described in the operating and technical instructions; or, B. The equipment has been altered or repaired by other than Manufacturer or an authorized service representative of Manufacturer; or, C. Adaptations or accessories other than those manufactured or provided by Manufacturer have be
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Digital-1 User’s Guide 17 Manufacturer does not assume any responsibility for 1) consequential damages, 2) expenses or loss of revenue or property, 3) inconvenience or interruption in operation experienced by the customer due to a malfunction in the purchased equipment. No warranty service performed on any product shall extend the applicable warranty period. In case of unsatisfactory operation, the purchaser shall promptly notify Manufacturer at the address set forth below in writin
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t: r uppo on: 18 Digital-1 User’s Guide Contact Numbers Sales Telephone......................1 (219) 929-4127 Fax.................................1 (219) 929-4377 International Sales Telephone...................... 1 (219) 929-4127 Fax.................................. 1 (219) 929-4377 Other Contact World Wide Web............www.gentnerals.com Starin Distributing, Inc. 1531 South Calumet Road, Chesterton, IN 46304 Technical Support: 1 (219) 929-4127
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ALS and Tour Guide Systems Manual Part No. 800-402-003 (Rev. 1.1)
