Olivetti PG L22 Special Service Manual page 99

7) Timing charts
a) Power-ON (Menu Setting: PARALLEL=ENABLE)
Printer
Status
PError
nAck
Busy
nFault
Select
b) Power-ON (Menu Setting: PARALLEL=DISABLE)
Printer
Status
PError
nAck
Busy
nFault
Select
c) Data Reception (Menu Setting: Ack/Busy Timing=Ack in Busy)
nStrobe
Busy
nAck
Y103920-3
Power ON
Power OFF Initializing H/W
H
L
H
L
H
L
H
L
H
L
Power ON
Power OFF Initializing H/W
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
Menu Setting
(Ack Width)
T(ACK )
Notice of Transition to On-line
Initializing F/W
Initializing F/W
NARROW MEDIUM
0.5µs 1.0µs
Service Manual
Idle
DISABLE
T(ACK)
WIDE
3.0µs
99