ANNEX 1 : SNA 60 FUNCTIONING DESCRIPTION (next)
D )
REGULATION :
SNA 60 analyzes the audio signal in average Leq. If the Leq value exceeds instruction level, the device triggers the alarm to
cut off the power dedicated to the sound system. The instruction level evolves automatically during the day.
During daytime period, the istruction is " Leq day 1"
During daytime period
During night time period,
During night time period
Remark : Daytime and night time periods are defined by parameters "hour daynight" and "hour night"day"
E )
LCD DISPLAY :
In normal use, LCD display shows state in which the device is in according to various informations useful to user.
Intialization mode", LCD display shows the name of device, date and hour.
"
Regulation mode", LCD
"
.
In Alarm or Default, it shows the activated Alarm type :
"Sensor connect failure !!"
"10s power cut activated!!!" (10 second cut-off alarm)
"Final power cut activated !!!" (Final cut-off alarm)
During data transfer,display shows "PC transmission in progress !!"
During settings, display shows "SNA 60 setting mode".
F )
EXTERNAL DISPLAY (RJV 30) :
The unit can be linked to an external display device featuring two sets of three indicator lights.
The first set looks like a traffic light available in front panel of equipment.
The second set includes of three yellow lights, showing exceed numbers left to user before the general power cut.
1
Leq Level< Instruction threshold - 3dB
Instruction threshold - 3dB < Leq Level < Instruction threshold + 3dB
All sound level exceed is punished by power failure of 10 seconds. The device resets automatically.
If n°1 light switch off, the power failure is final, the manager of the room must reset SNA60 in contacting the fitter. (depending
selected mode).
If the power failure is disabled, the set of lights remains on .
Notes :
An overflow (average Leq) is detected by the system. An LED indicator turns off, the number of authorized
overflow loses one unit. A power cut of 10s takes place.
An overflow (average Leq) is detected by the system. An LED indicator turns off, the number of authorized
overflow loses one unit and is equal 0. A power cut of 10s takes place.
If any overflow is observed in one hour, a LED indicator lights up again. the number of authorized overflow takes
up again one unit.
If "window information" is wired to the connector D (see wiring on page 9). When the external access opening is
detected, all LED will flash maintaining the current count.
AMIX
,and one issue is opened, the instruction is "Leq day 2 ".
the instruction is "Leq night 1".
and all issues are closed, the instruction is "Leq night 2".
display shows the short leq on the first line and the date and time on the second line.
2
3
4
Leq Level > Instruction threshold + 3dB
(version 5.x only)
1 - Indicator lights 1/2/3 show the number of authorized
overflow in hour (a punishment will switch off a light).
three lights are off, the power cut is
2 - Green light: Computed short Leq1s is 3dB below
instruction threshold.
3 - Yellow light: Computed short Leq1s is +/-3dB around
instruction threshold.
4 - Red light: Computed short Leq1s is 3dB over instruction
threshold. In order to avoid power failure, it is important to
not switch on lights.
25
If
final.
SNA 60