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SLC1
SPL Meter Trigger a Relay |
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The Model SLC1 is a single rack space Sound Pressure Level meter
with special triggering circuits. When monitored sound exceeds a
specified level, a relay connected to a
switched output is
activated. The switched output
can then activate
connected ancillary equipment which can be used to notify the
manager, light a light, ring a bell, or activate a compressor.
It can even be used to activate a counter to determine how often
sound exceeds the specified level. The choice of ancillary
equipment is made by the installer to accommodate the particular
situation. A second relay allows the SLC1 to
reduce sound levels by
6dB (20%) for 5 seconds. This feature is designed to encourage
performers / DJs to reduce to the specified sound level.
TriggeringCircuit: This circuit will respond when the
SLC1 monitors a sound which is over the user's specified level.
A switched output control relay and an audio attenuation circuit
will be triggered.
Switched Output Control: The SLC1 provides a
rear panel mounted terminal strip to which an installer can
connect ancillary equipment suitable for the installation. This
terminal strip becomes "active" when the switched output control
relay is triggered. Connected equipment can range from a simple
light bulb to a heavy duty solid state relay capable of handling
multiple announcement devices.
Audio Attenuation Circuit: The SLC1 will
accommodate two audio channels. The input and output connectors
for these channels are hard wired through the unit and will not
interfere with the sound quality. If connected, the audio
attenuation circuit will reduce the all over sound level by 6db
(20%) for a 5 second interval. If the sound level is not reduced
the circuit will be repeatedly activated to reduce the sound
level for 5 second intervals.The switched output control circuit
and the audio attenuation circuit can be utilized
simultaneously or independently. |
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Features |
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The Controls |
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SLC1 Package Contents: |
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SLC1
SPL Meter Trigger a Relay |
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MK8 Mini Microphone 123dB SPL |
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Certification calibration report SLC1 |
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Accessories: |
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Certification calibration report SLC1 |
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AC/DC 12 volt 500 milliamp power adapter (3.5mm jack) |
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Specifications |
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Measurement Range: |
Microphone input: 47dB -
123dB SPL |
Inputs: |
Microphone: XLR 3 pin
jack. Pin (1) Ground, Pin (2) Hot, Pin (3) Neutral.
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Audio: RCA
jacks. (2) |
Outputs:
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Switched
terminals: Fused 2 position terminal strip rated @ 1A,
125Vac. |
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Audio: RCA jacks (2) |
Microphone:
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600 ohm omnidriectional
electret condenser. Model MK8. (Cable not included) |
Display (SPL):
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3 digit via 7 segment
display. |
Trigger Level: |
60dB - 120dB typical |
Response, Recovery Times:
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Inter-related, varies depending on type of signal vs.
control settings. |
Reset Delay: |
10s - 120s. |
Monitored Source Level Reduction:
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6dB (20%) for 5s. |
Weighting:
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IEC A, C and Flat. |
Power: |
12Vdc @ 500mA via 3.5mm
jack (battery eliminator supplied). |
Size (W x H x D): |
19" x 1-3/4" x 8½" |
Weight:
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3 lbs. |
Case
Material: |
Painted
aluminum |
Approvals: |
CE, RoHS and WEEE |
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