4
5. Functions
5.1. Power
On
After Power on, Loading the parameters setup and static Filters
parameter last Shutdown time. Filters LEDs lit up.
5.2. Level
Display
Function
Panel is divided into upper and lower portions, correspond to A/B two
Channels. 5 Section Level indicator LEDs. Colors and Level definition
as below:
5.3. Notch Filters Status Display Functions
Right 12 LEDs correspond to 12 notch filters. If not light, notch filter
doesn’t work; Long light means static notch filter; Flicker means
dynamic notch filter.
5.4. Bypass Mode Function
Press button
【
Bypass
】，
LED lit and indicates the current is under
Bypass status.
This operation will not affect the previous notch filters setting. Under
Bypass mode, all notch filters are not involved, but detect and record
howling frequency.
5.5. Reset Notch Filter Function
Reset function is used for Reset all notch filter in this channel. Press
button
【
Bypass/Reset
】
and stay for 3 seconds, all notch filter Reset
and back to initial state, that means there are no filters at any frequency.
This operation will not change static/dynamic filters allocation.
After Reset onset, the LEDs light up from the first one until all, and then
all LEDs are off.
This feature is used to reset the static notch filter parameters have been
captured and re-capture environmental Noise points.
Besides, when the operation environment changed, and makes the
debugging work more convenient and efficient.
5.6. Sensitivity
Adjustment
Each time press
【
FB Suppression
】
, switch one level Sensibility
circularly, totally three levels(High, Middle, Low).
Different colors indicate different sensibility grades. Green represent
Low, Yellow represent Middle and Red represent High.
5.7. Mode Setting Function
Long Press
【
Filter Mode
】
above 3 seconds, and dispose the quantities
of static and dynamic notch filter. Use b/- to control increasing
and decreasing. Long light indicates static filter, flicker indicates
dynamic filter. Press again
【
Filter Mode
】
to finish notch filter
configuration. Back to normal working condition automatically.
5.8. Noise Gate Function
Noise Gate function is used to limit a certain level of noise or sound. For
example, it could be used to eliminate the noise of page turning from
attendees in the Conference system.
Long press button
【
Noise Gate
】
switch to use or disable Noise Gate
function. There are four levels as below
：
Level OFF
1
2
3
Colour Lights
off
Green
Yellow
Red
Level Thresold
-
-70dB
-60dB
-50dB
Attack Time
-
200ms
150ms
100ms
Release Time
-
20ms
15ms
10ms
5.9. Limiter
Function
Li
miter function could prevent the Loudspeakers from burning when
output level unrestricted increased effectively.
It is also used in normal circumstances to limit the output level.
The device panel couldn’t set up the Limiter parameters. Only GUI
could adjust this. Parameters as below:
Limit Threshold
-40dB~0dB
Attack Time
0.1ms~100ms
Release Time
0.010s~5s
Ratio 1:1~128:1
CLIP
-
38
12
6
24
-
-
-
Gr e e n
Ye llow
Gr e e n
Gr e e n
R e d
Gr e e n
Ye llow
Gr e e n
Gr e e n
R e d
1
2
3
4
5
6
7
8
10
12
11
9
FILTER MODE
BYPASS
NOISE GATE
RESET
(
)
SETTING
(
)
SENSITIVITY
FILTER MODE
BYPASS
NOISE GATE
RESET
(
)
SETTING
(
)
SENSITIVITY
FILTER MODE
BYPASS
NOISE GATE
RESET
(
)
SETTING
(
)
SENSITIVITY
