Crest audio CC-STS DATASHEET
Speaker Tone Sense Module
for CK series Power
CC-STS
Processing Amplifiers
Product Information
The CC-STS module is the answer to system designers needs to
satisfy local building codes for emergency voice announcement
systems. These systems are typically referred to as “supervised”
installations where each amplifier senses a tone that is looped back
to the STS module. As a CC style module it is intended to operate in
a stand alone amplifier or can be used with NexSys local controllers
(LCP-AC8).
The CC-STS Module fits in the network bay located on the rear
panel of Crest Audio CK series of power processing amplifiers. The
module individually monitors each amplifiers output and the complete speaker run for a pilot tone to ensure total system operation.
When the pilot tone is absent from the end of the speaker chain, the
Features
· Two independant speaker return inputs and two Alarm outputs A & B (contact closures)
· W orks with any CC or NC type input module and CC type output module
· STS module resides in middle bay of the CK series amplifier
· Contact closures indicate loss of pilot tone or amplifier protect (amplifier output relays open) on either channel
· User selectable jumpers to enable normally open or normally closed contact closures
· Contact closures may be paralleled for a single return
· LED’ s on the module indicate the type of fault
· Selectable tone sense range 13 to 30kHz. (T ypical use is 20kHz.)
· User adjustable controls (recessed) for detector frequency and threshold level
· Provides continuous integrity monitoring (tone sense) required for many fire safety codes
· User selectable “Tone” fault enable / disable
· For use as a stand alone product (no network required) or with a local controller
unit sets a contact closure open or closed depending on your application.
The module provides 2 inputs for speaker returns and two alarm
outputs (contact closures). The alarm outputs can be set to “Parallel” or “Stereo” via the “Parallel Mode” jumper . In “Parallel” mode,
both alarm outputs trip when the pilot tone is absent on either (or
both) channel. In “Stereo” mode, each alarm operates independently. Protect and Tone LED’s are also provided on the panel to
indicate which type of failure has occurred.
The CC-STS Modules are designed and manufactured in the United
States.
CC-STS connections
Speaker
Wire
LISTED 8B42
COMMERCIAL
POWER
AMPLIFIER
120V~60 Hz 15A
Speaker
Wire
USA - Specificarion amplifier shown
Architects and Engineers Specifications - CC-STS
The module shall plug into the the middle bay of the CK Power Processing Series Amplifier. It will detect a pilot tone at the speaker return input. The
detectable frequency range of a the pilot tone will be between 13K to 30KHz.
The pilot tone frequency and threshold will be seletable by a recessed rear
Speaker
Return
Wire
Speaker Return
Input
Ch A
+–
Ch B
+–
Speaker
Return
Wire
Designed & manufactured in the USA by:
Settings Faults
Freq.
Thresh.
Protect
Speaker Tone Sense Module
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
www.crestaudio.com
Tone
To Contact
Closure Input
Alarm
Output
Ch A
Contact
Closures
Ch B
Model
CC-STS
To Contact
Closure Input
Input
Signal A
With
Pilot Tone
Input
Signal B
With
Pilot Tone
panel potentiometer. The rear panel will have LED’s indicating a loss of
“Tone” or “Protect” fault for each channel. Two contact closures for“Alarm”
outputs are provided. There will be a user selectable jumper for independent
or paralled output operation. There will be a user selectable jumper for
“Tone” fault enable/disable.
CC-STS Middle Bay Module
Speaker Tone Sense Module
Block Diagram
B speaker return
+
-
B speaker return
+
-
hi pass filter
threshold
hi pass filter
threshold
Electrical Specifications
Sense input voltage range: 100V rms
Sense threshold: 5V rms – 50mVrms
Sense tone: 13k-30kHz
Fault Alarm output: two 100mA relay contacts
Connectors:
Speaker Returns: 2 position Pheonix Combicon connecters
Alarm Outputs: 2 position Pheonix Combicon connecters
Controls:
Tone (center frequency): Recessed trim potentiometer
Threshold: Recessed trim potentiometer
Indicators:
Tone Fault LED
Protect Fault LED
tone decoder
tone
(cen t e r f r eque ncy)
tone decoder
tone
(center frequency)
fault status LED’s
tone protect
A B A B
NDP-ENG ETHERNET NEXSYNDP-ENG ETHERNET NEXSY
NDP-ENG ETHERNET NEXSY
NDP-ENG ETHERNET NEXSYNDP-ENG ETHERNET NEXSY
microcontroller
on
off
paralled mode
user selectable jumpers
on
off
A B
sense enable
relay
relay
alarm output A
alarm output B
S GAS GA
S GA
S GAS GA
TEWTEW
TEW
TEWTEW
AA
A
AA
v. 1.4 3/22/2001 A44000082
NexSys is a registered trademark of Crest Audio Inc. Crest Audio reserves the right to make improvements in manufacturing or design which
may affect specification (so there). Crest Audio specification literature is
available in downloadable PDF format; visit our web site at http://
www.crestaudio.com.
2000 Crest Audio Inc.
Crest Audio Inc.
100 Eisenhower Drive
Paramus, NJ 07652 USA
TEL:(201)909-8700 FAX:(201)909-8744
http://www.crestaudio.com
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