Tektronix 7704A - Page 25

Circuit Description -7704A
Service
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α
2
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οι
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~
ι
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to
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Co D
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L O = M i n im um voltage or
c urr en t .
HI = M axim um voltage or
c urr en t .
Φ = Has no effect i n t h is case
I
npu t

O u t pu t
α
σ
ε Η
Φ r
.
,
ι εΦ
ft
κ . Φ
J
~
b
JO
υ Φ
ώ ιm
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A%
/
Φι
y
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=
b
~
αεΦ
α
C ιε
~~
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~
W

α
Σ
α 3

2

~
t
~
t Curr en t level . L O -0
m A
HI =
V
a
r ia b le f r om 0 to 4 mA
2 C urr en t can b e a dd
ed o r s ub t r acte d fo r i nte n sity m o du
latio n .
F ig . 2- 9 . ( Α )
L
ogic diagra
m for Ζ -Axis L ogic stage ;
(
Β ) Table of i n p ut/out p ut com
b i nations .
C urre n t source
co ntr olli n g
Ζ -Axis Sign al
σ
m
1 1
σ
2
1
m
4
ου
5
, ,, ο φ
6
mσ
9
1
(
Υ
14 15
σ
16
1
8 1
Φ φ Φ Φ L O HI
Φ Ζ HI
L O HI HI
Α IN T EN SITY
Φ HI Φ HI Φ
HI Φ Ζ Φ
HI Φ HI
Β I N T EN SITY
L O
Φ ΗΙ HI
HI HI Φ
2
HI L O HI
HI Α I NT EN
SITY a nd
Α In te n
sifie d
(D 4) HI HI 4)
(P HI
External iignal
All ot h er co mb
i n atio n s
L O No out pu t sig n al Ι