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ASA Series • Installation and Operation
Installation and Operation, cont’d
ASA Series
A
Appendix A
Specifications, Part Numbers,
and Accessories
Specifications
Included Parts
ASA 204/ASA 304 Optional Accessories
2
Output connectors — Plug the mono audio output devices into
these 5-pole captive screw connectors. Two devices can be
connected to each connector. Wire the connectors as shown
below.
Unbalanced Output
Tip
See Caution
Sleeve
Balanced Output
Tip
Ring
Sleeve
CAUTION
Connect the sleeve to ground (Gnd). Connecting
the sleeve to a negative (-) terminal will damage the
audio output circuits.
3
Output gain DIP switch — Use this switch to set the audio
output gain level. Gain levels available via the switch vary
depending on whether both inputs are receiving signals, and on
the output wiring, as shown in the table below. (The switch
marked SPARE has no function.)
Input Channel Output Output DIP Switch Settings
Left Right wiring Unbalanced Balanced
signal signal balanced +9dB +3dB
signal —— balanced +3dB -3dB
—— signal balanced +3dB -3dB
signal signal unbalanced +3dB -3dB
signal —— unbalanced -3dB -9dB
—— signal unbalanced -3dB -9dB
4
Power connector — An external 12V power supply is included
with the unit. Plug it into this 2-pole captive screw connector.
CAUTION
When connecting the power supply, voltage polarity
is extremely important. Applying power with
incorrect voltage polarity could damage the power
supply and the ASA. Identify the power cord
negative lead by the ridges on the side of the cord or
a black heat shrink wrapping around it.
Power Supply
Output Cord
Captive Screw
Connector
AA
SECTION A–A
Do not tin the stripped power supply leads before
installing the captive screw connector. Tinned wires are
not as secure in the captive screw connectors and could
be pulled out.
The two power cord wires must be kept separate
while the power supply is plugged in. Remove
power before wiring.
2-8
BAL
UNBA
L
ON
SPARE