23
MLA8
■
INSPECTION
1.
Measurement conditions
1) Power source
U, C, V, T: 120V
H, B, W, K: 230V
2) Instruments: Low-frequency oscillator, Analog waveform-measuring instrument
2.
Electrical characteristic
2-1. Preparation
The load resistances for each output terminals are as follows.
Output: 10 k
Ω
2-2. Unless otherwise specified, the operation elements shall be set as follows.
GAIN control:
MAX (-60 dBu)
80
switch:
OFF
26 dB switch:
OFF
+48 V (PHANTOM) switch: OFF
2-3. Unless otherwise specified, the input signal shall be 1 kHz sine wave.
2-4. The input signal impedance shall be 150
Ω
.
2-5. POWER Indicator Inspection
2-6. Gain
The output levels shall be within the range specified in the Table 2-6.
Table 2-6 CH INPUT (1-8)
*The difference in the level between input channels shall be 2 dB or less.
2-7. Frequency Characteristics
In the state of the Tabele 2-6
qw
, the 20 Hz and 20 kHz frequency response of each output shall be within the rage of
0 dB
q
+0.5/-2.0 dB,
w
+0.5/-1.0 dB compared to the 1 kHz (0 dB).
2-8.
80
In the state of the Tabele 2-6
w
, feeding 80 Hz signal, the OUTPUT level obtained when the
80
switch is set to ON
shall be within the rage of -3
±
1.5 dB compared to the level obtained when the switch is set to OFF.
All CH setup is made into the of 2-6
e
.
The input terminal of Contiguity CH is short-circuited by 150
Ω
.
When the output level of CH which input a signal is set to 10 kHz +18 dBu, the output level of Contiguity CH is a thing
-52 dBu or less.
"22 kHz Low path filter use"
2-10. PEAK and SIGNAL LED light-up level
q
, Input level is -70
±
3 dBu and it is SIGNAL LED, PEAK LED shall light up by -43
±
2 dBu.
2-11. Distortion Factor
In the state of the Table 2-6
w
, the distortion shall be less than 00.1 % when the output signal level is +14 dBu.
2-12. Maximum Output (@1 kHz)
In the state of the Table 2-6
w
, the distortion factor shall be less than 0.1 % when the output level is +24 dBu at output terminal.
q
w
e
Max
Min
Min
-60 dBu
-16 dBu
+10 dBu
OFF
OFF
ON
+4.0
±
1.5 dBu
+4.0
±
1.5 dBu
+4.0
±
1.5 dBu
Gain
26 dB (PAD)
Output Level
Input Level
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