Canon A-1 Repair Manual page 122

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56
The I BUS Wor ld 1 output is in true binary code.
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Fig. 3-4
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Fig . 3-5
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Fig . 3-3 and 3-4 Word 1 is
the binary coded brightness
(BV) signal.
Binary code: 00100001 (MSD)·
Binary to OCtal Conversion
Octa l Code: 204
From EV,
avo
Table
204
=
AVO 1.2 EV 13
Fi~. 3-5 is the same I Bus
output, but expanded to show
only Word 1 (BV).
Binary code: 10101110 (MSD)·
or:
1 0 1
011 1
0
Binary to
Octal
Conversion
101
= 5
011 = 6
10- = 1
Octal code: 165
From EV. BVO Table
165 = AVO 2 . 5 EV12
As noted before, Bus Checke r reads with the least
signif i cant digit at t he l eft .