UX-68ES/F/GG/IT
FO-90IT
5 – 10
5. Externally connected TEL OFF HOOK detection circuit section
•
The circuit current detection is turned on together with OFF HOOK
of main body or OFF HOOK of externally connected TEL. ON of
CML OFF (HS=L) is judged as OFF HOOK of externally connected
TEL.
6. CI detection circuit
•
CI is detected by the photocoupler which is integrated in series in
the primary side TEL circuit well proven in the existing unit.
Signal Name
Description
CML
Line connecting relay
(The circuit is located
H: Line make
in the TEL/LIU PWB.)
L: Line break
SP MUTE
Speaker tone mute control signal
(The circuit is located
H: Muting (Power down mode)
in the TEL/LIU PWB.)
L: Muting cancel (Normal operation)
Handset reception mute control signal
TEL MUTE
H: Muting
L: Muting cancel
DPON
Connecting DC circuit and DP generating
(The circuit is located H: Line connect / Make
in the TEL/LIU PWB.)
L: Line disconnect / Break
DPMUTE
Adjust the resistance during make ratio
(The circuit is located H: Muting
in the TEL/LIU PWB.)
L: Muting cancel
TXMUTE
Tx route mute circuit
(The circuit is located H: Muting
in the control PWB.)
L: Muting cancel
4) Signal selection
The following signals are used to control the transmission line of TEL/
FAX signal. For details, refer to the signal selector matrix table.
[Control signals from output port]
VOL A
VOL B
VOL C
ON-HOOK ICM/OGM ICM/OGM
OUTPUT
VALUE
(GP02)
(GP03)
(GP04)
Receiving MONITOR
PLAY
RINGER
BUZZER DTMF/DP
X 0
1K
0
0
0
—
—
HIGH
HIGH
—
—
X 1
10K
1
0
0
HIGH
HIGH
MIDDLE1
—
—
—
X 2
39K
0
1
0
MID 1
MID 1
MIDDLE2
—
—
—
X 3
100K
1
1
0
MID 2
MID 2
MIDDLE3
—
—
—
X 4
200K
0
0
1
MID 3
MID 3
LOW
MIDDLE
—
—
X 5
300K
1
0
1
—
—
—
—
—
FIXED
X 6
470K
0
1
1
LOW
LOW
—
—
FIXED
—
X 7
750K
1
1
1
—
—
—
LOW
—
—
VOLUME SETTING
Содержание FO-90
Страница 12: ...1 10 UX 68ES F GG IT FO 90IT M E M O ...
Страница 33: ...UX 68ES F GG IT FO 90IT 2 21 M E M O ...
Страница 47: ...UX 68ES F GG IT FO 90IT 3 14 M E M O ...
Страница 69: ...UX 68ES F GG IT FO 90IT Control PWB parts layout Top side 6 7 ...
Страница 70: ...UX 68ES F GG IT FO 90IT Control PWB parts layout Bottom side 6 8 ...
Страница 75: ...UX 68ES F GG IT FO 90IT TEL LIU PWB parts layout Top side 6 13 ...
Страница 76: ...UX 68ES F GG IT FO 90IT 6 14 TEL LIU PWB parts layout Bottom side ...