Parts Identification
7
8
9
5
12
10
Front View
1. AMP STATUS LED & CHANGEOVER
2. PILOT TONE LED
3. FAULT ALERT LED AND BUZZER SWITCH
4. SIGNAL INPUT / OUTPUT TERMINALS
PAGE 2
AX3800 Auto Amplifier Fault Changeover
5. SIGNAL LINK SWITCH
Rear View
4
11
AX 3800
amperes
AMP. NORMAL / FAULT
AMP. CHANGEOVER
ON/OFF
AMP FAULT ALERT
PILOT TONE
AMP1
AMP2
AMP3
AMP4
AMP5
AMP6
AMP7
AMP8 AMPSTDBY
STANDBY AMPLIFIER CHANGEOVER
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
CASCADE
INPUT
OUTPUT
AMP. BYPASS
ADD
LINK
OPEN
IN
OUT
IN
OUT
AMP1
AMP2
IN
OUT
IN
OUT
AMP3
AMP4
IN
OUT
IN
OUT
AMP5
AMP6
IN
OUT
IN
OUT
AMP7
AMP8
IN
STDBY
DC 24V
-
+
+IN
GND
-IN
+OUT
GND
-OUT
AMP1
+IN
GND
-IN
+OUT
GND
-OUT
AMP2
+IN
GND
-IN
+OUT
GND
-OUT
AMP3
+IN
GND
-IN
+OUT
GND
-OUT
AMP4
+IN
GND
-IN
+OUT
GND
-OUT
AMP5
+IN
GND
-IN
+OUT
GND
-OUT
AMP6
+IN
GND
-IN
+OUT
GND
-OUT
AMP7
+IN
GND
-IN
+OUT
GND
-OUT
AMP8
+OUT
GND
-OUT
STDBY
A B
1
8
16
8
4
2
1
32 64 128
FAULT
NO
CONTACT
RS 485
LINK
OPEN
LINK
OPEN
LINK
OPEN
LINK
OPEN
LINK
OPEN
LINK
OPEN
BALANCE AUDIO SIGNAL
AMPERES ELECTRONICS
amperes
R
Model : AX3800
MADE IN MALAYSIA
AMP.CHANGEOVER
DC input 24V
Max. 500mA
MKII
amperes electronics
another quality product from
1
2
3
LEDs show status of connected amplifier with :
AMP. NORMAL / FAULT LEDs : Green
- normal operating
Red
-
amplifier
faulty
Off
-
monitoring
bypassed
AMP.CHANGEOVER LEDs :
Green - faulty and standby amplifier overtake the position of failed duty unit.
Pilot tone indicator which will lit up when 20 kHz pilot tone is sent to all power amplifiers to detect any fault. PT is
sent in intervals to reduce loading effect which may prolong service life of duty units.
Whenever a fault is detected, it shall be indicated by this LED and a buzzer shall be activated. Use this switch to
silence the buzzer. LED will still be lit even the buzzer is off and shall turn off after the fault is rectified.
Audio signal from mixer or matrix controller shall be connected to these terminals before being fed to power amplifi-
ers. IN is for incoming while OUT is going to power amplifier input.
6
If more than one channel / amplifiers are sharing the same input signal, slide the switch to LINK. This shall connect
the input signal to adjacent channel to reduce hardwiring works.
Slide to OPEN if all channels / amplifiers have individual input, such as in Matrix system setup.
The output will still need to be connected to its corresponding amplifier inputs.
6. STANDBY AMPLIFIER INPUT TERMINAL
This terminal is to connect to standby unit’s audio input. There is no incoming terminal as per other channels.
