dbx 363X - Page 33

10. Press
the
Channel
1 KEY
MONITOR
button and verify
that the
signal
is
there
(
1kHz
sine
wave
at
1
volt
rxns
).
Return
the
Channel
1
KEY
MONITOR
button to
the
OUT
position.
11.
Press the
Channel
1
KEY ENGAGE button and
verify
that
the
Channel
1
green
OPEN
LED turns
on and the red
Channel
1 RELEASE
LED turns
off.
12.
Repeat
for Channel
2.
13.
Set
all
front
panel
switches
to
the
OUT
position.
14. Center
all
front
panel
knobs.
15. Connect a
1
kHz
sine
wave
at
1
volt
rms to
the
Channel
1
input.
16.
Verify
that the
Channel
l green OPEN
LED
is
on, the
Channel
2
red
RELEASE
LED is
on, and all
other
LED's
are
off.
17.
Press the
STEREO
COUPLE
button
and
verify
that the
Channel 2
red
RELEASE
LED turns
off and the
Channel
2
green
OPEN
LED
turns
on.
18.
Press
each
of
the
front
panel buttons
and
verify
that the
associated
red
LED
turns
on when
the
button is IN
and
is off
when
the
button
is
OUT.
H.
THRESHOLD
calibration
1.
Connect
a
1 kHz
sine
wave
at
-25
dBv
+/-
0. 1 dB
(
76.6
-
78.4 mV
rms
)
to
the
Channel
1 input.
2.
Turn the
Channel
l THRESHOLD
knob
fully counter-clockwise,
then
turn
it
clockwise
until
the
green
OPEN
LED
just turns
off.
3.
Verify
that
the
white
line is
vertical
+/-
5 degrees.
4. Turn the
THRESHOLD
knob fully
counter-clockwise
(
"-60"
).
5. Change
the
oscillator
level
to
off
(
<
100
micro
volts
).
6.
Increase
the
oscillator
level
until
the
green OPEN
LED
just
turns
on.
7.
Verify
that the
oscillator
level
is
0.775
mV rms
+/-
3
dB
(
0.55
-
1. 10
mV
rms
).
8.
Turn the
THRESHOLD
knob fully
clockwise
(
*
+20"
).
9.
Increase
the oscillator
level
until
the
green
OPEN
LED
just
turns
on.
10.
Verify
that the
oscillator
level
is
7.75
volts rms
+/-
3
dB
(
5.5
-
11.0
volts
rms
).
11.
Repeat
for
Channel
2.
I.
Noise
1.
Set
all
front panel
switches
to the
OUT
position.
2.
Connect
a shorting
plug to the
Channel
1
input with an
impedance
of
600 ohms
or less.
3. Push
the
STEREO
COUPLE
button
and the
Channel
1
KEY
ENGAGE
button.