MACKIE SP1200 - Manual (Page 23)

SP1200 – 23
3
0
3
6
9
15
30
55
DIRECT
OUTPUT
L
R
INPUT 1
DIGITALLY
CONTROLLED
ATTENUATORS
DIGITALLY
CONTROLLED
ATTENUATOR
L
+
—
R
MACKIE INDUSTRIAL
SP1200
BLOCK DIAGRAM
(#01.02.01.DF)
MACKIE
INDUSTRIAL
WOODINVILLE REDMOND
BUS
ASSIGN
+
—
+24VDC
PHANTOM
PAGING MIC
GAIN
+40dB GAIN
GAIN
+40dB
1
1
2
3
3
+
—
PAGING
MIC VOX
ATTENUATOR
CONTROL
(FROM µP)
J6
EQ
BYPASS MID FREQ
ZONE A
PRE OUT
PROGRAM EQ
ZONE A
AMP IN
V+
PROTECTION
OVERLOAD
FROM
TEMP
SENSOR
(ON HEATSINK)
V—
TO µP
+24VDC
PHANTOM
+24VDC
PHANTOM
TO EXPANSION I/O
MIC
+ —
HI
80
LO
MIC/LINE
INPUT A
GAIN
+40dB GAIN
GAIN
+40dB
1
3
HI
80 12K
12K
LO
AMBIENT MIC
(ZONE A)
INTERNAL
TRIM
TO µP
1
3
ADC
TO µP
FROM µP
ADC
V+
8 Ω
LEFT/ZONE A
OUTPUT
+
—
70V/100V
V—
ZONE A PAGE MIC
SWITCH
CONTROL
ALL CALL
GND
HI
80
LO
12K
—
+
BUS
ASSIGN
—
+
+
—
+
—
INPUT 2
L
+
—
R
+
—
—
+
+
—
+
—
INPUT 3
L
+
—
R
+
—
+
—
+
—
INPUT 4
L
+
—
R
+
—
TO EXPANSION I/O
BUS
ASSIGN
—
+
—
+
TO EXPANSION I/O
BUS
ASSIGN
—
+
—
+
TO EXPANSION I/O
TO EXPANSION I/O
—
+ FROM
EXPANSION
I/O
—
+ FROM
EXPANSION
I/O
—
+ FROM
EXPANSION
I/O
—
+ FROM
EXPANSION
I/O
—
+ FROM
EXPANSION
I/O
—
+ FROM
EXPANSION
I/O
—
+ FROM
EXPANSION
I/O
—
+ FROM
EXPANSION
I/O
BUS
ASSIGN
—
+
TO EXPANSION I/O
LOCAL/REMOTE
LOCAL/REMOTE
LOCAL/REMOTE
LOCAL/REMOTE
LOCAL/REMOTE
LOCAL/REMOTE
LOCAL/REMOTE
LOCAL/REMOTE +
—
+
—
EXPANSION IN
EXPANSION OUT
(TO µP)
J4
INSERT
(INTERNAL
FOR OPTIONAL
DSP CARD)
VOX
VOX
ACTIVATION
+15VDC (w/J3 INSTALLED) –15VDC (w/J2 INSTALLED)
N/C
PAGING MIC (+)
INPUT 4 RIGHT (+)
INPUT 4 LEFT (+)
INPUT 3 RIGHT (–)
INPUT 3 LEFT (–)
GROUND
INPUT 2 RIGHT (+)
INPUT 2 LEFT (+)
INPUT 1 RIGHT (–)
INPUT 1 LEFT (–)
PAGING MIC CONTROL
PAGING MIC (–)
INPUT 4 RIGHT (–)
INPUT 4 LEFT (–)
GROUND
INPUT 3 RIGHT (+)
INPUT 3 LEFT (+)
INPUT 2 RIGHT (–)
INPUT 2 LEFT (–)
GROUND
INPUT 1 RIGHT (+)
INPUT 1 LEFT (+)
1 14
25 13
+15VDC (w/J3 INSTALLED) –15VDC (w/J2 INSTALLED)
N/C
PAGING MIC (+)
INPUT 4 RIGHT (+)
INPUT 4 LEFT (+)
INPUT 3 RIGHT (–)
INPUT 3 LEFT (–)
GROUND
INPUT 2 RIGHT (+)
INPUT 2 LEFT (+)
INPUT 1 RIGHT (–)
INPUT 1 LEFT (–)
PAGING MIC CONTROL
PAGING MIC (–)
INPUT 4 RIGHT (–)
INPUT 4 LEFT (–)
GROUND
INPUT 3 RIGHT (+)
INPUT 3 LEFT (+)
INPUT 2 RIGHT (–)
INPUT 2 LEFT (–)
GROUND
INPUT 1 RIGHT (+)
INPUT 1 LEFT (+)
1 14
25 13
TO EXPANSION I/O
5. Specifications
SP1200 Block Diagram