TOA Electronics D-901 - Manual (Page 10)

10
Microphone Bus Control Section
Microphone bus indicator (21) to light, and allows
feedback suppression (p. 54), effect (echo) (p.
55), and bus assignment (p. 56) to be set on the
LCD screen.
21. Microphone Bus Indicator
Remains lit while the microphone bus is selected.
22. Feedback Suppression Indicator [FBS]
Remains lit while the feedback suppression
function is enabled.
23. Effect Key [EFFECT]
The effect (echo) function is enabled when this
key is pressed, and the effect (echo) parameters
are displayed on the LCD screen, allowing
settings to be changed. Pressing the key again
disables the effect (echo) function. (Refer to p.
55.)
24. Effect Indicator
Remains lit while the effect (echo) function is
enabled.
Output Channel Control Section
Note
The indicator lights red when the signal level is
set too high. In such cases, attenuate the unit's
output level so that the indicator lights green.
• SEL: Lights when the output channel is
selected.
27. Output Volume Control [OUTPUT]
Adjusts the gain of the output channel selected
with the Output Channel Selector keys (28).
28. Output Channel Selector Keys [1 – 8]
Used to select the output channel for sound
volume adjustment, parameter setting or Level
meter indication (25). The Output Channel
indicator [SEL] (26) lights when the key is
pressed, permitting parameter setting, volume
adjustment with the Output volume control (27) or
Level meter (25) signal level indication.
29. Output Channel ON/OFF Key [ON]
Enables or disables the channel selected with the
Output Channel Selector keys (28).
30. Output Channel ON/OFF Indicator
Lights continuously to indicate that the output
channel selected with the Output Channel
Selector keys (28) is enabled (ON).
25. Output Signal Level Meter
Indicates the signal level of the channel selected
with the Output Channel Selector keys (28).
26. Output Channel Indicators [ON, SIG, SEL]
• ON: Lights when the channel is active.
• SIG
Indicates the output signal level in two colors
(red and green). The status of indicator shows
as follows depending on the output signal
levels.
Red: Signal level is 17 dB or more above
the rated output signal level.
Green: Signal level is between –40 dB and
+17 dB on the basis of the rated
output signal level.
OFF: Signal level is lower than –40 dB
below the rated output signal level.
ON
8
7
6
5
OUTPUT
4
3
2
1
+12dB
+6dB
0dB
-6dB
PEAK
-40dB
-20dB
-12dB
0N SIG SEL
25
26
27
28
29
30
MIC BUS
FBS
EFFECT
SEL
21
22
23
24
20
20. Microphone Bus Selector Key [SEL]
Used to set the microphone bus parameters or
adjust the volume. Pressing this key causes the
Rated output signal level
+17 dB
–40 dB
Output signal level LED
Green
Red
OFF