SERVICE MANUAL
LBB 3310/00, 3330/00 and 3331/00 page: 21 Date of issue:
4822 861 11006 July 1998
Nominal level, maximum level and bandwidth
Connect a sine-wave generator to the LINE-IN connector and measure successively the output signal at the
TELEPHONE-OUT (M109), LINE-OUT (M119) and INSERTION-OUT“ (M169) connector according to figure 9.
629548 27
25Ω
X205
Mx*
Mx Signal
M109
*
M119
M169
Telephone-out
Line-out
Insertion-out
X150X110
X10
AC
24V DC
Power Supply
90 ... 264V AC
~~
Loudspeaker
PCB CPSU
M110 M111 M121 M122 M124 M150 M151
M2
GND
(GND) (GND) (GND)
-+
Line-IN L R IN
Rec-IN Rec-IN Telephone
+
-
A1
V
G1
Sine-Wave
Generator
003_009.cdr
Figure 9
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.