Tektronix 7834 - Page 71

X-COMPENSATION
INHIBIT
(A HORIZONTAL)
X-COMPENSATION INHIBIT
(B HORIZONTAL)
(A)
U305C
A
Q
=yQ
`0
A,

40
`a

=yQ
~O a'

O

O

44

0,1
<4
A
Q

i
4
A
Q
,

~O

00

O

O

~,
lQ,
~ r 0

m~0

~O

Ov

~S0

v
c~
k
5~

AS

Q

m

m

O
C,O
LO I HI I LO
4

5

6

7

9

10

122

8

HORIZONTAL CONDITIONS
il

Hl'

LO

HI

(IJ

A

A ONLY
4)

HI

HI

HI'

LO

LO

B

B ONLY
~I

HI

Hl'
_

LO

HI'

LO

LO

A AND B

ALT
OR CHOP
il

HI

Hl'

4'

HI

A

A DELAYS
B
fl

LO

HI'

LO
7-Lo

~

cp

A

A WITH VERTICAL UNIT IN B
COMPARTMENT .
HI'
I
LO B
B WITH VERTICAL UNIT IN A
COMPARTMENT .
NO OUTPUT PULSE (LO AT
OUTPUT)
(P = HAS NO EFFECT
IN THIS CASE
'POSITIVE-GOING PULSE . WHERE
BOTH A AND B HOLDOFF ARE REQUIRED TO BE HI, A HI AT EITHER
INPUT PRODUCESAN ALTERNATE PULSE .
'NEGATIVE-GOING
PULSE .
ALL OTHER COMBINATIONS
INPUT

/ OUTPUT
Figure 3- 7 .
(A)
Logic
diagram
for
Alternate Pulse Generator stage ; (B) Table of input/output combinations .
Theory of Operation--7834
ALTERNATE
PULSE
04432
(1195-7) 1988-32