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1 -
Channel measurement test light indicator.
2 -
Sensor connection default light indicator.
3 -
Audio presence light indicator.
4 -
Key associated to a light indicator. Allows to choose the analysis curve, used for historic.
Pressed, light on: weighted curve analysis (Choose weighting by 5).
Released, light off: linear analysis
5 -
Key associated to a light indicator. Allows to choose the weighting, used for historic.
Pressed, light on: enable weighted filter A .
Released , light off: enable intermediate filter M.
6 -
Key associated to a light indicator. Allows to set the reference for regulation.
Pressed, green light on : SNA 50-2 refers to the stereo line input
Released , red light on : SNA 50-2 refers to the the acoustic sensor.
7 -
Key associated to a light indicator. Allows to choose the analysis curve used for regulation.
Pressed, light on: weighted analysis (Choose weighting by 8)
Released, light off: linear analysis or filter card.
8 -
Key associated to a light indicator. Allows to choose the weighting used for regulation.
Pressed, light on: enable A weighting filter.
Released , light off : enabled intermediate filter M.
9 - Audio presence on left and right inputs of SNA 50-2
input.
10 - Scale allowing to control sound reduction level of SNA50-2.
11- Keyboard used to modify parameters.
12 -
LCD display.
13 -
Top cover (plexiglas) opening detector.
14 -
Power on indicator.
15 -
Set of three indicators showing acoustic pressure variation.
Fixed Green
Fixed Yellow
Fixed Red
The supplied RJV 30 provided with SNA 50-2, remotely displays this information. It should be placed well in sight.
In summary :
Computed short Leq 1s
R
Instruction threshold
J
V
Computed short Leq 1s Instruction threshold
The maximum user allowance instruction threshold is Leq 10 minutes
AMIX
FRONT PANEL DESCRIPTION
.
:
Computed short Leq 1s is 3dB below instruction threshold.
Computed short Leq 1s Instruction threshold
:
Computed short Leq 1s is +/-3dB around instruction threshold
Instruction threshold
:
Computed short Leq 1s is 3dB over instruction threshold.
Computed short Leq 1s
Instruction threshold
>
- 3 dB
Computed short Leq 1s
<
<
.Allows to check quickly if a audio source is connected correctly to SNA50-2
<
- 3 dB
Computed short Leq 1s
<
Instruction threshold
+ 3dB
>
+ 3dB
<
- 3 dB
.
7
- 3 dB
Instruction threshold
<
Instruction threshold
+ 3dB
+ 3dB
SNA 50-2
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