BENEFON TDP-40-TN2
Manual de Servicio

Product: TDP-40-TN2 (Delta) 28.1.1999

/ OA0300 Audio

6.2.6 Audio Module Tuning Instructions
6.2.6.1 TX-Audio
- feed a 1 kHz sine signal of 4.0Vrms to connector pin 5 (via local box, GENconnector) - enter 0 # and 21 # and 215 # (read phone level) - change the signal frequency to 2 kHz at 4.0Vrms - if the RF module is present, enter also 31 # - if the RF module is not present, connect an oscilloscope to the X-RF connector pin 17. - enter 201 # 4 and use the +/- keys to adjust the oscilloscope to show 2075...2125mVpp and press the F key. If the RF module is present, set the deviation to 4,5...4,7 kHz and press the F key.

- change the input sine signal to 1 kHz at 400mVrms. - press 1 and use the +/- keys to adjust the oscilloscope to show 1510...1530mVpp and press the F key. If the RF module is present, set the deviation to 2,95...3,05 kHz and press the F key. - press the C key.

Check the deviation limiter as follows and tune if necessary: - change the signal level to 4.0Vrms keeping the frequency at 1kHz. If the deviation does not exceed 3.7 kHz, enter 217 # and raise the tuning value with the + key one step at a time until the deviation rises above the limit, and press the F key. If the deviation is already above 3.7 kHz, press the F key. - change the frequency to 650 Hz. If the deviation exceeds 4.7 kHz, use the + key to increase the tuning value one step at a time until the deviation drops below the limit, and press the F key. If the deviation is already below 4.7 kHz, press the F key.

XA0300E4_fm5.fm

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