CCS800 | Service manual | Chapter 7 | Diagnostics and faultfinding en | 24
Bosch Security Systems | 2005-01| 3922 880 21112
7.3.5 Audio contribution to loudspeaker measurement
Insert a sine wave signal to the AUDIO-CONTR via M1 related to M2 and measure the output signal between M59 and
M57.
Input setting G1: X11 p-1 related to M2 (GND), see table below.
Settings for G1 Measurement results for A1
Amplitude Frequency Sound level
Nominal level -36 dBV (15.8 mVrms) 1 kHz -7.8 dBV ± 1.5dB (72 dB SPL)
Bandwidth -36 dBV (15.8 mVrms) 125 Hz -6.5 dBV ± 2 dB related to nom level at 1 kHz.
Bandwidth -36 dBV (15.8 mVrms) 12.5 kHz -2.5dB ± 1.0dB related to nom. level at 1kHz.
Reference: M2 See Ch. 13.4
M57, 59, X5 See Ch. 13.5
M110, 111, 121, 124, 150, 151 See Ch. 13.6.
M1, X2, 3 See Ch. 13.7
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