Specifications
SP4-APS SETTINGS
SW1(NAC/CC) = CC
SW2 (CLASS A/B) = B
OUTPUT AUDIO VOLTAGE
JP1 CLOSED = 70Vrms
OPEN = 25Vrms
PAG E
VOLUME
JP1
STANDBY / RUN
USB
D27
D25
D17
R7
-AUDIO
OUT
+AUDIO
OUT
TB3
RS485
+COM1
RS485
-COM1
TB5
- POWER
+ POWER
TB6
- BGM
INPUT
+ BGM
INPUT
TB2
TIP PHONE
IN
RING
TB1
R17
BGM VOLUME
JP1 SETTINGS
1-2 - ALERT PAGE TONE
2-3 - NO ALERT PAGE TONE
RS485 COM1 ACTIVE
D24
RS485 COM2 ACTIVE
TROUBLE
D29
SPLITTER MISMATCH
D28
RS485 COM LOSS
D26
USB
SP4-TZC
SP40/2 WITH ONE
SP4-APS SPLITTER
24VDC
Power Supply
Background
Music Source
J3
_
_
+
_
+
+
TB6
_
_
+
_
+
+
TB4
TB3
_
_
+
_
+
+
TB2
_
_
+
_
+
+
TB5
STB OUT
RET
STB IN
NO
NC
A
L
M
T
R
B
NO
NC
COM
IN3
IN2
IN1
NR
TEL
BGM
AUDIO OUT
CC/NAC
AUX IN
_
+
24V
COM
POWER
SYSTEM
RESET
UL LISTED
10K OHM EOLR
SP40/2
PC BOARD
CC
OUT
IN OUT IN
OUT
IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4
EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
W1 = OPEN
NAC/CC = NAC
W7
TB6
TB5
TB4
TB2
DC IN
DC OUT
BATTERY
AUD2 OUT
AUD1 OUT
STB2 OUT
STB1 OUT
EXP OUT
SPARE
C
NO
NC
T
R
B
AUX RET
AUX IN
AUD RET
AUD IN
SPB-160
MOTHERBOARD
NAC
OUT
IN OUT IN
OUT
IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4 EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
NAC
OUT
IN
OUT IN
OUT
IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4 EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
SPB-160 WITH TWO
SP4-APS SPLITTERS
W1 = OPEN
NAC/CC=NAC
10k OHM
EOLR
10k OHM
EOLR
W7
TB6
TB5
TB4
TB2
DC IN
DC OUT
BATTERY
AUD2 OUT
AUD1 OUT
STB2 OUT
STB1 OUT
EXP OUT
SPARE
C
NO
NC
T
R
B
AUX RET
AUX IN
AUD RET
AUD IN
SPB-160
MOTHERBOARD
NAC
OUT
IN OUT
IN
OUT
IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4 EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
NAC
OUT
IN
OUT IN
OUT IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4 EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
SPB-160 WITH TWO
SP4-APS SPLITTERS
10k OHM
EOLR
SETTINGS FOR BOTH SPLITTERS
SW1(NAC/CC) = NAC
SW2 (CLASS A/B) = B
OUTPUT AUDIO VOLTAGE
JP1 CLOSED = 70Vrms
OPEN = 25Vrms
CLASS "B" ZONES AND EXPANSION
REQUIRE UL LISTED 10K OHM EOLRs
AT THE END OF EACH CIRCUIT WHETHER
THE CIRCUIT IS USED OR NOT.
CLASS "B" ZONES AND EXPANSION
REQUIRE UL LISTED 10K OHM EOLRs
AT THE END OF EACH CIRCUIT WHETHER
THE CIRCUIT IS USED OR NOT.
CLASS "B" ZONES AND EXPANSION
REQUIRE UL LISTED 10K OHM EOLRs
AT THE END OF EACH CIRCUIT WHETHER
THE CIRCUIT IS USED OR NOT.
SETTINGS FOR BOTH SPLITTERS
SW1(NAC/CC) = NAC
SW2 (CLASS A/B) = B
OUTPUT AUDIO VOLTAGE
JP1 CLOSED = 70Vrms
OPEN = 25Vrms
Appendix D
SP4-TZC with the SP40/2, Multiple SPB-160
and/or SPB-320 and Multiple SP4-APSSplitters
Wiring Diagram
This drawing is for illustration purposes only.
Wire colors are for ease of reading only.