e-mail:
voice:
360.854.9559
fax:
866.783.1742
12
ADMS 44.22 Installation and Operation Manual
INSTALLATION
2
Setup & Installation
2.1
Mounting
The ADMS 44.22 is designed to be rack mounted in a standard EIA 19” rack.
It should be mounted in an area that is accessible from the rear and away from sources
of heat and moisture. We recommend that you bench test and become familiar with
the operation of the unit before permanently installing the unit in your facility.
2.2
Euroblock Connectors
The ADMS 44.22 interfaces to external equipment through removable
Euroblock screw terminals. The terminals accommodate wire sizes from 16 - 28
AWG solid or stranded wire. Before installing a wire remove the screw terminal and
turn each capture screw fully counterclockwise. Strip each conductor to a length of
0.25” and insert the conductor fully into the terminal. Turn the capture screw fully
clockwise to secure the conductor.
2.3
Analog Inputs & Outputs
Four stereo analog inputs and two stereo analog outputs are available via 5-posi-
tion removable Euroblock connectors on the rear panel, as shown in the picture below.
Each input is balanced and has a 22k? input impedance. The analog input sen-
sitivity can be electronically switched b4 dBu and -10 dBV using a serial com-
mand from the terminal. For balanced input operation connect the + and – conductors
of the source to the ADMS 44.22 + and - input terminals. For unbalanced operation
connect the + and Gnd conductors of the source to the + and – input terminals.
Analog Outputs 1 and 2 are balanced low-impedance outputs that parallel
AES Outputs 1 and 2, respectively. For balanced output operation connect the
ADMS 44.22 + and – output terminals to the destination’s + and – input terminals.
For unbalanced output operation connect the + and EGRND terminals to the desti-
nation’s + and – (respectively) input terminals.
Caution:
The analog outputs (including the powered monitor output) should
never be unbalanced by grounding either the + or – side of the output.
CAUTION!
Installation of the
ADMS 44.22 in high RF
environments should be
performed with care. It
is recommended that all
control and audio
inputs and outputs use
shielded cable and be
looped through ferrite
cores designed to sup-
press RF in the frequen-
cy bands present in the
local environment. All
shields should be tied to
the “EGRND” terminal
on each channel. The
earth ground pin of the
external power supply
should be connected to
station ground.
Surge protection
with RF filtering such
as the Tripp Lite “ISO-
BAR 4” is also suggest-
ed for the external
power supply. The pur-
chase of an inexpensive
uninterruptible power
supply (UPS) will pro-
vide back up in case of
power outages. For
lightning protection
devices, check out
www.polyphaser.com
and www.itwlinx.com.
Analog Input/Output Connectors
