Level Setting And Operation Check; Master Faders And Pots; Peak Leos - Tascam M-300 Series Operation & Maintenance Manual

1 .

LEVEL SETTING AND OPERATION CHECK

"0 dB" reference voltages:
0 dBV is referenced to 1 Vrms.
0 dBm/0 dBu is referenced to 0.775 Vrms.
1 - 1 . MASTER FADERS A N D POTS
Connect a - 1 0 dBV, 1 kHz signal to the mput
jacks l isted in the table, and by adjusting the
MASTE R faders and MASTER pots of the
channels being checked, confirm that
relative outputs provide nominal output level
signals.
Input Jacks
PGM 1
PGM 2
PGM J
PGM 4
R
SUB IN
L and R
EFF
AUX
1
AUX 2
AUX J*
AUX 4*
EXT SOLO
1
& R)
(L & R )
EXT IN (L
EXT IN 2
•
M-31 2/M-320 only.
1 -2. VU METERS
Check that the VU meters ind icate "0 V U "
when P G M O U T ( 1 -4) and STEREO OUT
(L & R) provide the nominal level readings. I f
the meters do not indicate "0 VU", adjust V R s
with a slot blade screwdriver inserted into a n
access hole located above each meter.
the
Controls
PGM Master Faders between 7 -8
on the scale
7-8
Stereo Master Fader L between
on the scale
7-8 on the scale
Stereo Master Fader R between
7-8 o n the scale
MONO Master Fader between
a r
E F F ECT M ste Pot
A U X 1 Master Pot
A U X 2 Master Pot
A U X 3 Master Pot
AUX 4 Master Pot
SOLO level pot
EXT 1 and EXT 2 in the
MON itor select switch
rack
MONITOR level pot
PHONES level pot
Output Jacks
PGM OUT 1
PGM OUT 2
PGM OUT 3
PGM OUT 4
STEREO OUT L
STEREO OUT R
MONO OUT
E F F ECT OUTPUT
AUX 1 OUTPUT
AUX 2 OUTPUT
AUX 3 OUTPUT
AUX 4 OUTPUT
SOLO OUT
MON OUT L & R
(8
Headphone
output
ohm impedance)

1-3. PEAK LEOS

Peak LEOs are preset to l ight at +1 1 VU and
extinguish at +8.5 V U .
I ncrease the input level b y 1 1 dB from - 1 0 d B V
t o +1 d B V without altering the settings i n
paragraph 1 -1 and check to see that the peak
LEOs light at a +1 1 VU reading.
1
-
1
Output Nominal Levels
+4 dBm at X L R connectors
-1 0 dBV at RCA phone jacks
+4 dBm at X L R connectors
1
- 1 0 dBV at RCA phone
jacks (stereo)
0 dBu at /4" phone
jack (mono)
0 dBu at 1 /4" phone jacks
-10 dBV at RCA phono jacks
- 1 0 dBV
0 dBu 1/4" phone jacks
- 1 0 dBV at RCA phono jacks
W
level 1 .5 W + 1 .5
Max.