Brother HL-2700CN Series, Руководство по обслуживанию, Страница: 100 / 377

IV-47
(6) Engine interface block
The engine interface consists of the following signals;
<IREADY>
The signal indicating the engine is ready
<PRREQ>
Signal requesting printing from the controller
<KEY_STATUS>
Signal indicating that a key switch status on the control panel has changed.
<VSYNC>
Vertical synchronization signal for printing
<HSYNC>
Horizontal synchronization signal for printing
<VIDEO>
Video data signal
<COMMAND>
Command signal sent from the controller to the engine
<STATUS>
Status signal sent from the engine to the controller
Fig.4-39 shows the timing of each signal after the power switch is turned on.
Power-On
IREADY-N
PRREQ-N
VSYNC-N
VIDEO-P
VSYNC-N
HSYNC-N
VIDEO-P
(K) data
45 sec MAX.
20 sec MAX.
0.1sec. MIN.
(C) data (Y) data (M) data
207.779 us
1st line 2nd line Last line
for Continuous Printing
1dot
27.9985 ns
10 ms MAX.
0.8 sec MAX.
1.875 sec
8 us MIN.
1.1 sec MAX.
(A)
Fig.4-38