HP 3455A - Page 196

The following signatures are for
the outguard ALU circuits. The
signatures
are taken with the start/stop
irtputs
of the
signature
analyzer connected to
A3TP2.
NOTE
•To obtain
this signature,
a 10
K resistor must
be
connected between the
S
volt TP and the
probe
tip
of
the signature analyter.
To
check for proper signature analyser
connections
verify signature of *S V
test
point Is
CH79.
+
5V: CH29
Pin Signature
U16 4
CPP3
s
CPP3
6
03FA
U21 1
6457
2
8CPU
3
9954
4 6457
S
UPUH
6 5042
7
0000
8 6A09
9 2131
10 6457
11
U330
12 HAF7
13 6457
14
CH29
U22 1
6457
2
9445
3 PP05
4
6457
B
CPOH
6
AH54
7
0000
8
2A69
9 P0F9
10 6457
11
530U
12 F84U
13 6457
14
CH29
U23 1
CH29
2
08U7
3
UHOl*
4
17A6*
5
2762
6
FH98*
7
3U52
8
0000
9
U23H
10
9U2A
11
32UF*
12
scoe
13
FAA3*
14
3S41*
15
6673
16
CH29
Pin Signature
U24 1
CH29
2
A81P
3
UHOl*
4
17A6‘
5 37FH
6
,
FHSe
7
1
9P30
8
1
1
0000
1
9
3UFF
10
94AU
11 32UF*
12 CH29
13
CH29*
14
CH29*
15
CH29
16 CH29
U25 1
CH29
2 6406
3
FAA3*
4
3541*
5 9C0F
6 150U
7 H4UF
8 0000
9
3UFF
10 3P95
11 21H1*
12 CH29
13
CH29*
14
CH29*
16 CH29
16
CH29
U28 1
6406
2 UCH6
3 9U2A
4 3US2
5 2762
6 08U7
7 0P6P
8
6673
9
HAF7
10 8CPU
11 UPUH
12 0000
13 2131
14 32AC*
15
F693
16
CPP3
17
5C84
18
3P95
19
HHF5
20
H4UF
21
H074
22
gcoF
23 87C2
24 CH29
Pin Signature
U29 1 CH29
2
UCH6
3
FAA3*
4
3541*
5 87C2
6 150U
7 H074
8 0000
9
25H1
10 HHF5
11 21H1*
12 CH29
13
CH29*
14
!
CH29*
15
CH29
16 CH29
U30 1 A81P
2
5H5C
3
9U2A
4 3U52
5 2762
6 08U7
7
5C08
8 5673
9
9445
10 CPOH
11
P0F9
12 0000
13
F84U
14
1456
15 0129
16
0P6P
17
HAP6
18 94AU
19
3H92
20 9P30
21 59H2
22 37FH
23 1HHA
24 CH29
U31 1
CH29
2
SH5C
3 UHOl*
4 17A6*
5
1HHA
6 FH98
7
59H2
8
0000
9 25H1
10
3H92
11
32UF*
12
CH29
13
CH29
14
CH29
IS
CH29
16
CH29