Wen Positive/Negative; Principle Diagram For Input And Output Jumpers - IAI CV-M40 Operating Manual

7.2.5. WEN positive/negative

Jumper is placed on PK8273C.
As factory setting the WEN signal is 1H positive for active. With JP22 it can be changed to be
active low. The WEN timing is then changed. Refer to actual timing diagram for details.
Jumper WEN positive
JP22 Open

7.2.6. Principle diagram for input and output jumpers

The below shown diagram with jumpers in factory setting can be useful for control of jumpers
and connections.
12pin
HD in/out
6
(Trigger in at H reset.
HD in at H non-reset)
VD in/out
7
(Trigger in at H non-
reset)
9
PCK/WEN
out
6pin
(Trigger
5
in)
WEN
6
out
Fig. 29. Principle diagram for input output jumpers and signals.
CV-M40
WEN negative
Short
Fig. 28. WEN positive/negative
Rear board
PK8202B
JP21
JP19
JP7
JP18
JP5
JP20
JP6
- 20 -
Interface board
PK8273B
JP11
JP13
JP9
JP12
PCK
WEN
75
GND
Jumpers are shown in factory setting.
ext. HD
(Trigger at H reset.
HD in at H non-reset)
int. HD
ext. VD
(Trigger at H non-reset)
int. VD
(WEN at H non-reset)