Facilities; Front And Rear Panels - Crown AMB-5 Hardware Installation Manual

120 VAC
AUX
60 Hz
CTRL
20 W
RS232 / RS422

2 Facilities

AUX Connector
A 3-pin male mini-XLR connector is used for remote
control of equipment lacking the Crown Bus. A 10
VDC power source is provided to control solid state
relays and other logic circuits. The auxiliary con-
nector also includes a high-impedance 10 VDC in-
put. (Section 3.4)
Stack Audio Inputs
These two stack inputs allow you to multiply the
number of audio inputs by stacking 2, 3, or more
units to build a 12x2, 18x2, or larger mixer. (Section
3.3.3)
DSPI
This yellow LED is a Data Signal Presence Indicator.
It flashes whenever a valid IQ command has been
received. The indicator can also be forced on to aid
rapid troubleshooting of the Crown Bus wiring.
Page 8
CROWN BUS
AUDIO STACK AUDIO STACK
IN IN
OUT OUT
SERIAL DATA LOOP
2 1
IN OUT IN
+ – + – MAIN BUS MAIN
INPUT
GROUND + – + – + – +
ONLY
Figure 2.1 Front and Rear Panels
IQ Mixer / Multiplexer Hardware Installation
(Front View)
AUDIO AUDIO AUDIO
ADD 25 ADD 25
0 5 0 5 0
IN FOR MIC IN FOR MIC IN
-5 -5 -5
10 10
6 5 4
-10 -10 -10
15 15
BUS
-12 21 -12 21 -12
M L P M L P
– + – + – + –
(Rear View)
Enable Indicator
This amber enable indicator shows that the unit is
receiving AC power.
Audio Input Gain Control
Each of the six input channels has a screwdriver-
set, calibrated gain potentiometer for adjusting the
input gain to the input signal level. They can be
used to compensate for different microphone sensi-
tivities. (Section 3.3.1)
RS232/RS422 Connector
This DB25 connector functions as a standard RS232
or RS422 serial communications port. It can be used
for connection directly to a host computer (Section
3.1) or, if Option 4 was purchased, for connection to
a Crown Local Net loop (Section 4.2).
Crown Bus Ground Connector
This chassis ground stud is provided to connect an
AUDIO AUDIO AUDIO
ADD 25 ADD 25 ADD 25
5 0 5 0 5
FOR MIC IN FOR MIC IN FOR MIC IN
-5 -5
10 10 10
3 2 1
-10 -10
15 15 15
21 -12 21 -12 21
M L P M L P M L P
+ – + – +
ADD 25
0 5
FOR MIC
-5
10
-10
15
-12 21
M L P
–
Rev. 0