Sony SPP-M100, Руководство по обслуживанию

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DETECTION TIMING
1. Charge detection
• When the handset microcomputer and base microcomputer
CHG DET (charge detection) are both low, charging is un-
derway.
• Handset chattering is eliminated for both high n low and
low n high (50 msec on/off for determination).
• During CPU operation, the handset charge is constantly de-
tected.
(For halts and holds, the mode is forcibly ended, so the charge
is detected after the mode ends.)
2. Ring detection
Charging
H
L
CHARGE DET
Base unit
• The CPU monitors the ring detection port and if it detects the
ring for more than 200 msec, judges that a call is coming in
on the outside line.
• After this is detected, the LINE ring on/off message is sent to
the handset matched with the ringing interval.
• The interval on/off is decided when either state is detected
continuously for 40 msec.
• The base LINE LED blinks synchronized with the ringing.
• When the ring detection port is detected off for 6 seconds
continuously, there is judged to be no incoming call.
• When it is judged that there is no incoming call, the mes-
sages to the handset are stopped.
Handset unit
• When the LINE ring on/off message is received from the
base, the handset blinks the ringing on the handset LINE LED
and buzzes the buzzer according to the message.
• Each time the line ring on/off message is received from the
base, the line ring on/off check message is transmitted.
2sec
4sec
6sec
No ring
detection
Ring detection
H
L
RING DET
200msec
2sec
H
L
canceled. (Since WAKE UP may not be carried out be-
cause when DIP SW interferes when making key input
…
)
Starting with key input is enabled.
9 7
n
[#]
: Key & LED Test.
LED all lit n
[TALK]
n
[LINE 1]
n
[LINE 2]
n
[BATT LOW]
LED off n Dial Key
[1 - #]
n Center
[LINE 1]
LED off n
[REDIAL/PAUSE]
n
[PGM]
n
[CHANNEL]
n
[SPEED DIAL]
n
[HOLD]
n
[CONF]
n
[FLASH]
n
[BATT CHECK]
n
[LINE 2]
LED OFF
turned off and completion sound made.
If the order of the key input is wrong, an error tone will
be initiated and the mode will be canceled.
0
8
n
[#]
: Charge Detection
CHARGE DET terminal condition is output with
[BATT LOW]
LED.
H : off
L : lit
!¡ 9
n
[#]
: Battery remaining display.
The amount of battery charge remaining is displayed by
three LEDs.