Toshiba Model: GD-1150 Manuale Utente
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GD-1150/1151/1200/1201/1160/1260
ELECTRICAL CIRCUITS
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4
The relation between the signals and sound volume is as follows.
The monitoring signal whose volume is controlled by IC9[IC2] is amplified by the OP amplifier (IC10
[IC1]), then output to the speaker.
[IC1]), then output to the speaker.
* Values in [ ] are for GD-1151/1201 in case that the descriptions vary between GD-1150/1200 and
GD-1151/1201.
Sound volume
VOLSEL2
VOLSEL1
VOLSEL0
Max. (7)
LOW
LOW
LOW
(6)
LOW
LOW
HIGH
(5)
LOW
HIGH
LOW
(4)
LOW
HIGH
HIGH
(3)
HIGH
LOW
LOW
(2)
HIGH
LOW
HIGH
Min. (1)
HIGH
HIGH
LOW
Silent (0)
HIGH
HIGH
HIGH
Signal Name
Type
Active
Description
Destination
SP-SEL
O
H
Line/Tone Selection Signal
IC3
MON
O
H
Ring/Tone Selection Signal
IC3
VOLSEL0-2
O
H
Speaker Volume Control Signals 0-2
IC9 [IC2]
08/03