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    Untitled

    Abstract: No abstract text available
    Text: TELEPHONE TONE RINGER/RINGING DETECTOR LB1004AC PRELIMINARY Description The LB1004AC is a Full Feature Tone Ringer/Ringing Detector integrated circuit which simultaneously provides a ringer-output tone and a “ ringing-detected” output signal. TTie tone ringer portion of the device provides switchselectable output frequencies of 750,900,940, and 1200 Hz at independently selectable modulation rates of 7.5,10,15,


    OCR Scan     		PDF LB1004AC LB1004AC MCT210Q4898

    Untitled

    Abstract: No abstract text available
    Text: s G E-THOMSON 0 7 E D | 7 ^ 2 3 7 81C 1 9 1 1 8 - 0D12T47 û | T 7 ^ - 0 7 ' IL. D P R E L IM IN A R Y DATA AN AT&T PRODUCT FULL-FEATURE TELEPHONE TONE RINGER/RINGING DETECTOR • COMPLETE TELEPHONE BELL REPLACE­ MENT WITH CAPABILITY OF 32 SWITCHSELECTABLE ALERTER TONES


    OCR Scan     		PDF 0D12T47 RS-470