PARTS IDENTIFICATIONS
amperes
AX 3700
5
6
4
3
2
1
BUZZER
AMP/LINE
ALERT
FAULT
CHANGEOVER
AMP. NUMBER
FAULT
NORMAL
S/BY
POWER
ON / OFF
PILOT TONE ACTIVE
1
2
3
5
4
6
1
NORMAL LEDs
Amplifiers connected to the unit which is operating in good condition shall be represented by the
green LEDs. Amplifiers not connected should be switched to disconnect at the rear of the panel to
avoid false identification.
2
FAULT LEDs
Amplifiers detected as faulty would be represented by the red LEDs. Fault condition is detected when
the Pilot Tone is not detected at the amplifier's 100V line output.
3
CHANGEOVER LEDs
In the event of standby takeover of the faulty duty amplifier, the LED shall lit at the faulty channel. At
any one time, only one take over shall take place to prevent overloading.
4
STANDBY AMP FAULT LED
This LED shall lit when the standby amplifier is detected as faulty. When this occurs, a changeover
shall not take place whenever any duty unit is found faulty.
5
PILOT TONE ACTIVE
Pilot tone shall be sent at intervals to every channel of amplifier inputs. Whenever this is sent, the
LED shall lit.
6
FAULT BUZZER
Whenever a faulty channel is detected, a buzzer shall be activated and the alarm can be switched off
while the red LED shall remain on.
FRONT VIEW
PAGE 2
DC 24V
0.5 A
+
-
IN
-
IN
+
O
U
T+
IN
-
IN
+
O
U
T+
O
U
T-
O
U
T-
IN
-
IN
+
O
U
T+
IN
-
IN
+
O
U
T
+
O
U
T
-
O
U
T-
IN
-
IN
+
O
U
T+
IN
-
IN
+
O
U
T+
O
U
T-
O
U
T-
IN
+
IN
-
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
CHANNEL 5
CHANNEL 6
STANDBY
AMP
CHAN. 1
ON
CHAN. 2
ON
CHAN. 3
ON
CHAN. 4
ON
CHAN. 5
ON
CHAN. 6
ON
H
IG
H
CASCADE
LO
W
CHANNEL 6
+
- G + -
INPUT
OUTPUT
CHANNEL 5
+
- G + -
OUTPUT
INPUT
CHANNEL 4
+
- G + -
OUTPUT
INPUT
CHANNEL 3
+
- G + -
OUTPUT
INPUT
CHANNEL 2
+
- G + -
OUTPUT
INPUT
CHANNEL 1
STANDBY
+
- G + -
+
- G
OUTPUT
INPUT
OUTPUT
OPEN
LINK
LINK
SIGNAL
OPEN
LINK
LINK
SIGNAL
OPEN
LINK
LINK
SIGNAL
OPEN
LINK
LINK
SIGNAL
OPEN
LINK
LINK
SIGNAL
AX3700
PLEASE OBSERVE POLARITY
OUT +/- --> TO ZONE SELECTOR / SPEAKERS
AMP CONNECTIONS
IN +/- --> FR. AMP OUTPUTS
MAX LOAD / CH - 400W / 100V LINE
AMP. AUTO
FAULT
CHANGE OVER
AMPLIFIER 70/100V LINE INPUTS/OUTPUTS
CHANNEL / AMP. DETECTION SWITCHES
SWITCH TO OFF FOR UNUSED CHANNEL
FAULT
CONT.
3A NO
MAX
AUDIO SIGNAL INPUTS / OUTPUTS
RS 485
INPUT SIGNAL
DO NOT SWITCH TO LINK WHEN DIFFERENT AUDIO
SOURCES ARE USED FOR THE ADJACENT CHANNEL
CASCADE
CONNECT ONLY ONE WIRE FOR CASCADE TO NEXT
UNIT
UNIT 1(LOW) --- UNIT 2(HIGH)
A B
7
8
9
10
16
15
14
13
12
11
REAR VIEW
