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CCS800 |
Service manual | Chapter 7 | Diagnostics and faultfinding
en | 30
Bosch Security Systems | 2005-01| 3922 880 21112
7.3.11
TELEPHONE-IN to LINE-OUT Circuit measurement
Remove the interconnections of TELEPHONE -IN and connect successively a sine-wave generator to the TELEPHONE -
IN L connector. Measure the output signal at the LINE-OUT connector.
Input setting G1: M150 related to M151 (GND), see table below.
Settings for G1
Measurement results for A1
Amplitude
Frequency
Amplification
Nominal level
-14dBV (200mV
rms
)
1kHz
-14dBV ± 1dB (85dB SPL)
Maximum level
+11dBV (3.55V
rms
)
1 kHz
+11dBV ± 1dB (110dB SPL)
Bandwidth
-14dBV (200mV
rms
)
125 Hz
-0.5dB ± 2dB related to nom. level at 1kHz
Bandwidth -14dBV
(200mV
rms
)
12.5 kHz
-0.5dB ± 1dB related to nom. level at 1kHz.
Reference:
M119
See Ch. 13.6