Canon A-1 Repair Manual page 132

7. A/ T (7P)
12V
'>
,
.....
l
- .-
(Trigger:
07)
Pre-programmed AV or TV .
Depending on the priority
mode selected, this
sig nal is either the shutter
speed (shutter speed
priority) or Aperture
(aperture priority) set
on the A/T dial. It is
in Gray code.
Gray Code:
LSD 00110100
..
'
.
...
. ...
.
.
"
.
.
.
t··
o • • •
... . ... . . ..
T.B 7 is 0
=
Shutter Speed
Priority Mode
(SSLC)
12V
I I
Fig. 3-24
12V
•
Xii
r--
12\1
Fig. 3-25
•
.
r - - -
2. ~-3.0V
O.4-0.6V
T.B 2 thru T.B 6 indicate
shutter speed selected.
11010
=
1/1000 sec.
I"
. l
In Fig. 2-35 Gray Code,
T.B 7 is "1" indication
that the camera is set to
the AV (Aperture priority)
mode.
T . B 2 thru T . B 6 Gray Code:
11010. From the AV Code
Table, this is f/19 .