D.A.S. CSA Serie Manual Del Usuario página 14

INTRODUCTION
General
Thank you for purchasing a D.A.S. power amplifier. It has been
built with the most advanced modular technology, and has
been designed through the use of computer-aided design for
both the electronic and mechanical parts.
Features
•
Dual balanced XLR and Terminal Block input connectors.
•
Output terminal connections.
•
Variable speed back-to-front fan cooling.
•
Front located volume controls.
•
Overload and short-circuit protection.
• Independent thermal protection for each channel.
• Turn on current limiter.
• Turn on delay.
• Open circuit protection.
•
Stable into reactive or mismatched loads.
•
Ultrasonic and RF protection.
•
Modular technology: Easy to replace modules.
•
Class AB.
•
Stereo, parallel and bridge operation modes.
•
Clip limiters.
•
Power On, Signal Present, Clip and Protection LED
indicators
FRONT PANEL DESCRIPTION
CSA-300T
®
ELECTRONICS
A
A) POWER SWITCH
Turns the amplifier on ("|" position) and off ("0" position).
When the amplifier is turned on the 'Power' LED and the
protection LEDs will illuminate. When all voltages are properly
established the protection LEDs will turn off and the 'Power ON'
LEDs will remain illuminated. It is of the monophasic type
(which must be taken into consideration if the device is to be
permanently connected to the mains power socket; see Safety
Warnings.
Serie CSA / CSA series
POWER
B
Manual del usuario / User's manual
B) POWER LED
When lit, this red LED shows that the amplifier is on.
C) INPUT LEVEL CONTROLS
Volume levels for each channel can be adjusted by using the
knobs found on the front panel. Gain is maximum when the
LEVEL rotary potentiometer is rotated fully clockwise.
D) CLIP LED
In the event that the signal's excursion exceeds the maximum
voltage from the power supply, the unit will indicate saturation
through the clip LED of the channel involved.
E) PROTECTION LED
When a channel's output is disconnected by the amplifier's
protection, this yellow LED illuminates.
A channel's protection may be triggered by:
•
Overheating sensed at any part of a channel. When the
amplifier has cooled down, the channel's output will be
connected and operation will resume. The control circuit
has some degree of built-in hysterisis to avoid turn-on and
off oscillations.
•
Presence of DC at a channel's output. Since it may
severely damage speakers, the amplifier will deactivate
the output in the event DC levels are detected. Once DC is
no longer present, the PROTECTION LED will turn off and
output is reactivated.
G
•
Short-circuit (or too low impedance) at a channel's
output. Although this protection is provided, it is
dangerous for the amplifier to remain in this situation for a
long time. In case of a short-circuit, turn off the amplifier
while examining any equipment connected to the
amplifier's output, together with the connections and
cabling. Once the short circuit problem is corrected the
amplifier needs to be switched off and on to be
reactivated. The output will not reactivate automatically.
•
When the amplifier is switched on, the output is also
deactivated for a few seconds to prevent dangerous
transients from damaging the speakers, and the
PROTECTION LED is on until the amplifier is ready for use.
Clip
Protection
Signal
Power On
Level A Level B
C
D
E
F
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