HP 3490A - Page 216

3U
FFERS
DATA
BIT O H
OATA BIT C H
.\
.
,>-
DATA BIT B
H
'r./
>.-
:ATA BIT A H
L/
TO
OISPLAY
AND
,
DATA OUTPUT
J
.
to,@oF
F-
rm,@
--i
I
c@{rs
I
I
$@OR
I
l._
eo,ooo
--l
I
I
couNrs
|
|
--\------lJ
\
\7
TIME
COUNT
I
(LTCr)
TO Ut5il)
TIMING
COUNTER
7
TIME
COUNT 2
(HTC2)
TO
Ut5(t3)
(Hrc4)
TrME COUNT 4 TO ',a,O'
I
(Hrcs)
.ME couNr
8
ro
ur5a4)
|
(Hrcr6)
T'ME couNT 16 To
ur5rs)
|
?
(Hrc3z)
TIME
couNr 32 ro urstrzt,
I
ur8il3).
u22
(2)
)
t
H
-
r
(
LCrC)
7
CLEAR TIME
COUNTER L
I
FROM
Ut6
(
t)
+ I7V FROM
POWER SUPPLY
+r2v To u9(28),
7
u40t
(28)
g
-6V
TO Ril,R44
I
TIMING COUNTER
OUTPUTS
s
io
r'ra
r
COUNTS
PERIOD
+
ro,ooo
+roo.ooo
6OHz LINE sOHz LINE
*
to,ooo
+
roo,ooo
+ro,ooo+
roo,ooo
HTC I
Hr.c2
HTC4
HTCS
HTC I6
HTC32
ro,ooo
20,ooo
40,ooo
80,ooo
r60,ooo
320.OOO
roo,ooo
200,ooo
400,ooo
800,ooo
r,600,ooo
3,200,ooo
5mS
l0mS
2OmS
40mS
EOhS
l6OmS
IOOmS
2OOmS
4OOmS
SOOmS
r.6 s
l2mS
24mS
48 mS
96
mS
192
mS
6OnS
l20mS
24OmS
480mS
95OmS
t.92S
I
Figure
7-23.
Schematic Diagram,
Clock
and Counters,
7451-t
Get other manuals https://www.bkmanuals.com