User's Manual

CM2500W Amplifier - Installation Manual
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Copyright 2011 Cellphone-Mate, Inc. All rights reserved.
• The red Warning light (2) should remain OFF.
If the Warning light illuminates, power off the
amplifier immediately.
The bank of DIP switches on the
side of the amplifier contains five
switches.
• Moving a switch down
(toward from the base of the amplifier) turns
that switch OFF and increases amplifier gain
for the selected channel.
• Moving a switch up (away from the base of
the amplifier) turns that switch ON and
decreases amplifier gain for the selected chan-
nel.
From left to right, the DIP switches provide 1, 2, 4,
8, and 16 dB of attenuation (reduced amplifica-
tion). These switches are cumulative, meaning
that the total amount of attenuation for a channel
is equal to the combined dB of all ON DIP
switches. For example:
• Turning all switches OFF = 0dB attenuation
(amplifier is at full gain).
• Turning ON Switch #1 = 1dB attenuation
(amplifier maximum gain is reduced by 1dB).
• Turning ON Switches #1, 3, and 5 = 1+4+16dB
attenuation = 21dB attenuation. For example,
in a 70dB amplifier, this means that the
selected channel would be reduced to 49dB
(70db-21db).
• Turning ON all switches = 1+2+4+8+16dB
attenuation = 31dB attenuation. For example,
in a 70dB amplifier, that means that the
selected channel would be reduced to 39dB
(70dB-31dB).