Tektronix 213 DMM Instruction Manual page 30

Oscilloscope with options
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Theory of Operation-213 Service
3-6
CLOCK
INTEGRATOR
OUTPUT
U260
PIN 8
U250C
PIN
9
0254
U250D
12
U260
PIN 5
U250o/ U250C
13
8
U250D/ U250C
11
10
+
HI
LO
HI
LO
ON
OFF
HI
LO
HI
LO
HI
LO
HI
LO
0
0
0
0
n
I
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V
Fig. 3-4.
A/D
Converter timing diagram.
0
0
0
0
n
I
I
r
I
I
I
I
!
I
r
I
I
I
I
r
I
I
I
I
L
I
1481-12
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