Tascam M-300 Series, Руководство по эксплуатации и техническому обслуживанию

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1-10. FR EQUENCY RESPONSE
Set the input and output levels to nominal as
in previous paragraphs and connect an oscillator
to the input jack and a wide range (more than
1 00 kHz) level meter to the output jack.
F requency response ranges are as follows:
MIC IN
-->
PGM OUT 20 Hz - 30 kHz
�J
d B
Other I nputs --> Other Outputs
20 Hz - 30 k Hz
�J
dB
1 - 1 1 . T.H.D.
T.H.D. is also measured with the input and out­
put levels set to nominal as previously described.
Connect a low distortion oscil lator to the input
jack, and a 30-kHz L.P.F. and a distortion
meter to the output jack. Set the oscil lator
308
DIN I HF-A
� MIC TO PGM OUT
8 2: MI C
(150
fl
SOURCE) 60 dB 62 dB
LINE TO PGM OUT
86 dB
87 dB
� L INE TO PGM OUT
2:
80 dB
82 dB
1 LINE TO EF F/AUX OUT
85 dB 87 dB
1 LINE TO ST OUTPUT 86 dB 8B d B
1 LINE TO MONO OUT 83 dB
85 dB
1 LINE TO MON OUT
84 dB B6 dB
1 LINE TO SOLO OUT B6 dB B8 dB
1 -
1 1
output to 1 kHz and read the distortion meter.
Specs are as follows :
1 MIC I N -> PGM OUT
-> PGM OUT 1 LI N E I N
1 LI N E I N
1 LI NE I N
1
LI N E I N
1 LI N E I N
1 LINE I N
.... STE REO OUT
.... MON OUT
-> EFF ECT OUT
0.025 % or less
0.02 % or less
0.02 % or less
0.02 % or less
0.02 % or less
0.02 % or less
0.02 % or less
-> AUX OUT
.... SOLO OUT
1-12. S/N RATIO
S/N ratio should be measured with the input and
output levels set to nominal as previously
described and a 1 50-ohm dummy load con­
nected to the M I C IN connector.
Specs are given in the table below.
312 320
DI N I HF-A DIN
IH F-A
20 2: MIC
52 dB
58 dB
50 dB
55 dB
1 H LINE
LINE
77 dB BO dB 73 dB 75 dB
82 dB
84 dB 78 dB
80 d B
85 dB 87 dB 84 dB
B6 dB