MCi JH-400B Series Technical Manual page 15

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Preamp
&
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EQ
Figure 12
Assign
Sw.
LIGHT METER OPTION
Channel
Buses
Tape
>--.~--------~Recorder
ECHO
1--~---t
Chamber
No feedback loop is produced
by this arrangement.
The JH-400B
LIGH,T~·1<1ETER
uses a separate POWER SUPPLY, a MASTER
COJ:·JTROL BOARD, and.v qne CHANNEL BOARD for each meter.
....
~· ,,~
The MASTER CONTROL BOARD generates the precision
RA~1P
which. is
used on each CHANNEL BOARD to measure the AUDIO SIGNAL LEVEL. (See
the LIGHT METER BLOCK DIAGRAM on page 3-10) .
Each CHANNEL BOARD controls a set of eight lights which display the
level of the AUDIO SIGNAL in one channel.
JH-400B
Page 3-5