Formula Sound SENTRY MK2 Panduan Pengguna - Halaman 2

Jelajahi secara online atau unduh pdf Panduan Pengguna untuk Sistem Kontrol Formula Sound SENTRY MK2. Formula Sound SENTRY MK2 17 halaman. Environmental noise control system
Juga untuk Formula Sound SENTRY MK2: Panduan Pengguna (11 halaman)

Halaman Cetak
Formula Sound SENTRY MK2 Panduan Pengguna
Sentry MK 2
ENVIRONMENTAL NOISE CONTROL SYSTEM
FUNDAMENTALS
Noise nuisance legislation requires sound levels to be controlled within limits, for licensed premises it
is increasingly a condition of licensing that equipment to control sound levels is in place.
Where artists (such as DJ's or Bands) bring in their own sound equipment the only way to control
sound levels is to control the mains power ring used for the sound equipment.
Installing a contactor into the mains power ring (requires qualified electrician) used to supply power to
the sound equipment and using a Sentry MK2 to monitor sound levels and control the contactor
provides control of maximum music levels.
The Sentry is designed to monitor sound levels and provide a trigger when a preset sound level is
exceeded, this trigger will normally be used to trip a contactor removing the mains power supply to
the music system. When the Sentry trips the contactor there is a short (about 3 seconds) delay
before the system can be reset, before pushing the reset button always check that it is safe to do so
(eg amps turned down so no sudden surge).
The Sentry should be mounted opposite the performing area where the performers can see it. It
should be mounted on a solid wall away from doors and some distance from where speakers will be
mounted. If the Sentry is to be mounted on a wooden or plasterboard wall an external microphone is
likely to be required as wooden/plasterboards are prone to vibration which will be picked up by the
internal microphone.
In a basic installation a permanent power feed is required to the Sentry which then supplies the
control voltage to the contactor to hold it in, when the sound level exceeds the set level for about 10
seconds or more the Sentry triggers the removal of the control voltage to the contactor. The contactor
opens and the mains supply to the music system is removed.
If you are using our Contactor use the low voltage output from the Sentry which is the first
two terminals on the grey connectors. You can use thin low voltage cable (bell wire alarm cable
etc) the current requirement is very low, this connects to the two terminals on the printed circuit board
located at the end of the contactor case. The polarity is not critical.
DO NOT CONNECT MAINS INTO THE PRINTED CIRCUIT BOARD CONNECTORS WITHIN THE
CONTACTOR CASE.
When power is applied to the Sentry the reset light will be lit and no contactor control voltage will be
present. Resetting the unit will cause the light to go out and the contol voltages to be present.
The allowable noise level must be adjusted on site by using the multi turn pre-set labelled
ADJ 1 at the bottom left of the circuit board usually 1-2 turns up or down from the factory setting will
provide more than enough adjustment for most applications.
The Sentry can have two levels set; if for example; the allowed level is different for day and night or
weekdays/weekends then a switch (or timer) may be used to change to a second setting.
2