User manual ELECTRO-VOICE 1777A

[. . . ] The input jack is a 1/8 inch (3. 5mm) stereo/mono jack. Typical input level is 100 mV RMS maximum for normal modulation. More than this input will cause the audio to "limit" which may sound unnatural. Reduce the input level, if this should happen, by turning down the input device. -3- The second jack is the microphone input. [. . . ] Do not coil the antenna and put it in a pocket. This will severely reduce the operating range. Place the microphone about 10 to 12 inches below the mouth of the user. Transmitter Operation Turn on the transmitter with the toggle switch on top of the 1777A. Channel Display A through Q, low battery indicator and input level 2. Overmodulation indicator (when symbol is showing) 4. Input level adjustment indicator 12 -dB E. D. R. 5 3 4 LCD Display -5- Channel Selection and Input Adjustment 1. Turn the receiver on and plug a microphone into the mic jack. A channel letter will show in the display. 2. Press the set button once and the Channel indicator will flash. Press the button and the Channel will cycle up. Match the channel to the receivers being used (SR-50, SR-100, SR-400 or check frequency chart to match other brands). When there is only 5% battery life left, the battery symbol will constantly flash in the display. System Walk Through Now that the transmitter is set up, you should be able to hear the program material on the receiver. Walk the receiver through the area that it is intended to be used in. Check for any noise or interference that would cause undesired operation. Some of the causes of poor performance are listed below. . . Transmitter antenna coiled up Poor transmitter location Poor receiver location Interference Local AC Line noise RF "Trouble Spots" Operating distance beyond system capability Malfunctioning System, receiver or transmitter -8- FCC INFORMATION The Telex Model 1777A is authorized under FCC Rules Part 15. Licensing of Telex equipment is the user's responsibility and licensablilty depends upon the user's classification, and frequency selected. CAUTION: Changes or modification made by the user could void the user's authority to operate the equipment. Operation is subject to the following two conditions: (1) This device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. ACCESSORIES Description Catalog No. OLM-10 microphone (supplied with 1777A) . OLM10 ELM-22 Micro Mini lapel microphone . 70925-001 RE92Tx Unidirectional lapel microphone . 301456000 SCHS-745 headworn microphone . 745TA4 BC-100 battery charger-2 pocket . [. . . ] De- fects due to alteration, repair by unauthorized persons, insertion of non-Telex parts, misuse, accidental damage, use of the equipment for purposes other than those for which it was designed, and the like, are not covered by this limited warranty and repairs thereof will be subject to normal service charges. Repairs and replacement parts are covered under this limited warranty only for the unexpired term of the original limited warranty. Products purchased from unauthorized dealers are not warranted. 5. You must fill out and return the product warranty card to register the purchase date of serialized items. [. . . ]