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SDA
-
8A
STEREO
DISTRIBUTION
AMPLIFIER
2.0 INSTALLATION
This chapter provides instruction in the proper installation
of
the SDA-8A. Included are sections
outlining general installation guidelines, cable preparation, rear panel configuration, audio input
connection, audio output connection, patch point connection, grounding and shielding, and power
connection.
2.1
GENERAL GUIDELINES
The SDA-8A should becarefully unpacked andinspected for any shipping damage. Ifthe inspection
reveals any damage, file a claim with the delivering carrier. The packing material should be kept
as
evidence
of
mishandling, as well as
to
allow return
of
the equipment to the factory
if
necessary.
ThepackeditemsshouldincludetheSDA-8Aitself, thepowercord, thelegendpanel(PR&E#80-1041)
and a connectorkit (PR&E #76-60). This connector kit is used to prepare the audio input and output
cables (as described in Section 2.2), and contains the following:
DESCRIPTION
ConnectorHousing,
12
Pin, Male
ConnectorHousing, 6 Pin, Male
Molex Crimp Pins, Male
Qll
1
9
70
PR&E#
15-605
15-603
15-3
When installing the SDA-8A,signal andACpowerconnectionsare madevia
th
e connectors locatedon
the rear
of
the unit (referenceFigure 2.2).
TheSDA-8Arequires onerackunit
of
height (1.75 inches) in a standard rack width
of
19
inches. The
depth
of
the SDA-8A from the rack rails is
10
inches, however, itisrecommended that the installation
allow an additional two inches
to
accommodaterear panel connections and cable bends.
Thelegendpanelismountedon thefarrightside
of
the SDA-8A,adjacenttotheVUmeteres,andis
held
inplace
by
thesame mounting screwswhich securethe SDA-8A in therackrails. Toinstall,simplyline
uptheholesinthelegendpanelwiththemountingholesintheSDA-8Afrontpanel,then securetheSDA-
8A into therackrails. Slide the legend into the legend panel from the right side.
NOTE:
Legenddimensions are 1-9/16" by
13/16".
Thepowertransformerusedin the SDA-8Ais a toroidal type, which exhibitsa lowradiated humfield.
NOTE
: Careshould
be
taken to avoidlocating the SDA-8A within six feet
of
any intenseelectromag-
netic hum fields such
as
those produced bylarge powertransformers and motors. Likewise, cables
to
andfrom theunitshould
be
routedtoachievemaximumpracticaldistancefrom ACmainspowerwiring.
Particularattention should
be
paidtosome
of
thelow-cost, supposedly"professional",poweramplifiers
which haveappearedinthemarketplace. In
many
casesthelowcosthas been partiallyachieved through
theuse
of
smallcorepowertransformersoperatingatorontheedge
of
saturation. Whiletheseunits
may
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