HP 3490A - Page 219

LOGIC
STORAGE
(
H MTC)
MAIN
TII\4E
BIT C
LCM B
FROM
Ut6
fl6)
(HMTA)
MAIN
TIME BIT A
,^
UP-DOWN
'^
COUNTER
ta
,^
o^
''
u2i
^^
LoaD
oc
COU
NT
DOWN
COUNT UP
CLEAR
E\-
(HMTB)
MAIN
TIME
8IT
B
LCMA
FROM
U16
(3)
LCMC
FROM
UI6
12)
LOGIC
OUTPUT
DECODER
RANGE
COUNTE'
+5V
HMQA
FROM
UIO
(6}
HMQB
FROM
UIO
(4)
HMQC
FROM
UIO
(2)
HMQD
FROM
UtO
(8)
STATE
STORAGE
+5V
11
RANGE
l-lirCaat
. .
PROGRAMMING
I
IA
FROM
REMOTE
I
(HCRB)
,-
or
FRONT PANEL
L(HCRC)
STORAGE
L
l-
TO
Uil
(il)
TO
Uil
(3)
TO Ur4
{
il)
TO
Ut4(3)
TO
U20(3)
ro
u6
0t)
CLEAR S'
LCMC
LCMB
LCMA
LCDF
POLARITY
L
TO
U22
(II)
OVERLOAD
L
TO U22
(3)
TRANSFER
L TO U23(13)
T]ME
COUNTER
L TO
U6(I),U23(5}
6
ro
u4
(r)
I
i
3bEi,?#'^
e
röüä
rrrr
-l
(LSPL)
STORE
(LCOV)
CLOCK
(
LFTX)
FALSE
(LCTC}
CLEAR
YMA
I
YM8
|
YMC
I
TO
U9
vr.,lo
I
RoM
YME
I
YMF J
a
A
(LSCK)
STATE CLOCK
-
FROM
U4
(8)
(LOTE}
OUTPUT
ENABLE
L
FROM
U9
(20)
2
YMG
TO
u9
04)
ROM
+5V
READ
ONLY
MEMORY
+I2V
FROM
^
cR2
o
(N0
t)
QUALIFIER
INPUT
l-
YMA
I
YMB
FRoM
I
Y l\'lc
u7
1 vr,,to
I trt
I
L YMF
FROM
UI7
YMG
F-A\GE
OR
ta(
FoR
rE\ NUMBERS
r-:3TS lN
: : SHOULO
;
:
VALUE
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