Sharp XE-A201 Service Manual page 7

4) Up-loading matrix for the satellite
STATE
EVENT
Satellite checks the terminal No.:If it is cor-
rect, satellite sends ACK and goes to 1.
ID-ENQ
If it is not correct, satellite ignores the ID-
ENQ.
ACK
NAK
EOT
TEXT
TIME-UP
STATE After receiving text and sending ACK
EVENT
ID-ENQ
ACK
NAK
Satellite sends ENQ and goes to 4.
EOT
Satellite checks the text block, if the block
is correct, satellite sends ACK and goes to
3.
If it is not correct, satellite sends NAK and
TEXT
goes to 2.
If transmission cannot be continued, satel-
lite sends EOT and goes to 0.
(ERROR END)
The host goes to 0.
(ERROR END)
TIME-UP
Time-up is 7 seconds
Time-up: Four seconds after sending of text.
Two second after sending of ENQ.
Initial After receiving ID-ENQ and sending ACK.
0
Satellite checks the terminal No.:If it is cor-
rect, satellite sends ACK and goes to 1.
If it is not correct, satellite ignores the ID-
ENQ.
.
.
.
Satellite checks the text block, if the block
is correct, satellite sends ACK and goes to
3.
If it is not correct, Satellite sends NAK and
.
goes to 2.
If transmission cannot be continued, satel-
lite sends EOT and goes to 0.
(ERROR END)
Satellite goes to 0.
(ERROR END)
.
Time-up is 7 seconds
3
.
Satellite sends the text and goes to 5.
.
.
Resends the ENQ and then goes to 4.
If satellite has resent the ENQ two times,
sends EOT and goes to 0.
(ERROR END)
Resends the ENQ and then goes to 4.
If satellite has resent the ENQ two times,
sends EOT and goes to 0.
(ERROR END)
1
.
.
.
After sending ENQ
4
.
.
.
– 6 –
XE-A201UC
After sending NAK
2
.
.
.
Satellite goes to 0.
(ERROR END)
Satellite checks the text block, if the block
is correct, satellite sends ACK and goes to
3.
If it is not correct, Satellite sends NAK and
goes to 2.
If transmission cannot be continued, satel-
lite sends EOT and goes to 0.
(ERROR END)
Satellite goes to 0.
(ERROR END)
Time-up is 7 seconds
After sending TEXT
5
.
Satellite sends the text and goes to 5, or
sends the EOT and goes to 0.
(Normal END)
Resends the text and then goes to 5.
If satellite has resent the text two times,
sends EOT and goes to 0.
(ERROR END)
Satellite goes to 0.
(ERROR END)
.
Resends the text and then goes to 5.
If satellite has resent the text two times,
sends EOT and goes to 0.
(ERROR END)