Tascam M-300 Series, Operation & Maintenance Manual

Page: 24 / 167

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4.8 ;
M ETER SELECT AND TAPE RETUR N
MO NITO R SECTION
0V U Meters
Each of the first four meters d isplay e ithe r the
level
of the PGM
busses
or that o f the TAPE
RETURNS. The metering source is determined
by
the METER Select Switche s (see
#29).
The
two meters o n the right, L and R, allow
monitoring
the level of the signals selected on
the
ME TER Se lect Switch Rack (#60).
All
these six meters respond to the
average
signal level using standard
volume unit ball istics ,
and do
NOT show peak leve ls.
@l Peak LEOs
The light
emitting d iode provided for each mete r
will
react much more quickly than the meters,
and is
set to "flash" 1 0 d B above "0 VU".
They are te lling you the truth about the R EAL
level. The "average" level shown on the VU
meter is not always a safe conce pt. Re ly on the
peak LEOs, the meters are only a guide.
lj
M ETER Select Switches
Each of the four
(4)
PGM VU meters can be
switched to prov ide v isual monitoring of either
the PG M busses or the TAPE RTN's. Whe n the
sw itch is in the "up" position, the meter rece ives
s igna l from e ither the corres pond ing PGM buss
or
fro m TAPE RTN's 1-4, depend ing on the
positio n of the TAPE RTN SE LECT switch.
When
the Meter Select switch is in the "down"
posit ion, the meters can rece ive signal from
either
the PGM
buss
or TAPE RTN 's 5- 8. Once
the
metering source is selected, the meters will
follow
the se lection of the TAPE RTN Select
sw itc hes in the TAPE RETURN MONITOR
sections (see be low).
22
0 TAPE RTN Select Switch
Whe n pressed, this switch connects the specific
TAPE R ETURN to the corresponding TAP E
MONITOR section, a llows access of the retur n­
ing signal to the METER, and provides signal to
a specific AUX SEND control. If the returning
signal is not chosen, the switch re places the
TAPE signal with that of the PROG RAM. Thus,
the MON ITOR and AUX sends can receive and
process signals from either of the TAPE R E­
T U R NS or the PROG RAM.
a. AUX 3,AUX 4Send Controls (M-312&M-320
ONLY)
Each MONI TO R section contains one of these
controls.
AUX
3 is accessed from TAPE R E­
TURNS
1-4,
while
AUX 4
derives signals from
TAPE RETU RNS
5-8.
Since the AUX 3 & 4
rece ive the ir signals after, or post, the TAPE
RTN Switch (see the prev ious description), the
setting of this switch dete rmines the signal
processed by the AUX SENDS.
0
AUX 3 & 4 POST Switch (M-312 & M-320
ONLY)
This switch allows the AUX SENDS to rece ive
signal e ither before (pre) or afte r (post) the
re spective MON ITOR LEVE L control (see
below).
It Monitor LEVE L Control
Once the signal source has bee n dete rmined and
selected by the TAPE RTN switch, the ove rall
volume is set by the MONITOR L EV E L control.
This leve l is the n sent to the AUX POST circuit
and the MON ITOR PAN control.
a.
M onitor PAN Control
As
with the channe l PAN controls, the MON I ­
TOR PAN determines the left-to-r ight placement
of the signal in the MONITOR syste m. The PAN
sends the signal to the STE R EO LEFT and
R IGHT BUSSES.
CD
Monitor ON Switch and LED Indicator
This switch al lows the signal in the MONITOR
syste m to pass to the STE R EO B USSES and on
models M-312 and M-3 20, to the AUX POST
circuit. The LED indicator is lit when the switch
is in the "ON" pos ition (down). The switch d oes
NOT affect the signal sent to the AUX P R E
circuit.