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SA2532AP Datasheet(PDF) 6 Page - Sames |
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SA2532AP Datasheet(HTML) 6 Page - Sames |
6 / 22 page 6/22 SA2532 sames Sliding Cursor Procedure To accommodate easy and uncomplicated redialling (LNR) behind a PABX, a sliding cursor protocol is implemented. If new entries match the previous RAM contents, pressing the LNR key will dial out the remaining digits. If there is an error in matching, the LNR will be inhibited until next on-hook, and the RAM will contain the new number. Tone Generator The tone generator incorporates the DTMF tones and 3 basic frequencies for the tone ringer. DTMF Tones The DTMF Tone Generator creates 12 Tones in compliance with CCITT Recommenda- tion Q23. Signal levels are altered by Mask Option. High group frequencies have a level 2.6dB higher than those of the Low Group. Details of the DTMF Tones are: Low group Digit 1-2-3 697Hz (Error = -.074%) Digit 4-5-6 770Hz (Error = -.679% Digit 7-8-9 852Hz (Error = -.621%) Digit *-0-# 941Hz (Error = +.139%) High group Digit 1-4-7-* 1209Hz (Error = +.533%) Digit 2-5-8-0 1336 Hz (Error = +.176%) Digit 3-6-9-# 1477Hz (Error = -.141%) Errors are calculated with reference to a base clock of 3.58MHz and at ambient temperature of 24°C. They exclude tolerance errors in the base frequency. KEYBOARD ARRANGEMENT Figure 2 DR-00709 R3 R4 LNR/CONT. # 8 9 PAUSE R2 R1 C1 4 MUTE C2 5 1 R 0 R2 * C3 6 2 C4 7 3 |
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