SERVICE MANUAL
LBB 3310/00, 3330/00 and 3331/00
page: 15
Date of issue:
4822 861 11006
July 1998
Nominal level and bandwidth
Insert a sine wave signal to the AUDIO-CONTR via M1 related to M2 and measure the output signal between M59 and
M57.
6
2
9
5
4
8
2
7
25
Ω
X205 M59
X150
X110
X11
X10
AC
24V DC
Power Supply
G1
90 ... 264V AC
~
~
Loudspeaker
PCB CPSU
M110
M2
SHIELD
M1
M111
M121
M122 M124
M150 M151
M57
(GND)
(GND)
(GND)
+
-
A1
V
Sine-Wave
Generator
GND
Audio Contr.
Trunk
003_003.cdr
L
R
IN
Rec-IN
Line-IN
Rec-IN
Telephone
+
-
Figure 3
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
-8 dBV +/- 2 dB related to nom level at 1 kHz.
Bandwidth
-36 dBV (15.8 mVrms)
12.5 kHz
-3dB +/- 1.0dB related to nom. level at 1kHz.
Содержание CCS 800
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