HP 3455A - Page 141

Model
3455A
SERVICE GROUP
B
Section
VIII
Table B B-3. Gate
Function
in
Auto-Cal.
Gates
UtcO
Faaclfon
Q19
XI
Gain
021 X10
Gain
022
X2 Gain
028, 026
XI
Suffer
029, 031,
032
TV Referertce
036
10:1 Input to
Ground
018
+ 100
Gain
038
10:1
Victual Ground
039
100:1 Attenuator
03S
10:1 Attenuator
016
10:1 Attenuator to
Input
016
100:1
Attenuator
to
Input
033
+
V
Reference
to
Attenuator
034
Attenuator Input to
Ground
02
Low Voltage input to
Ground
04
+ V Reference to
Input
Table B-B4. Switch Driver Voltage Levels.
—
Pin
Test
Pin
Oesignalor No. 0
1
2
3
4
5 6 7 8 9
10
11 12 13 No.
U4
1
0
0 0 a
•24
-24 -24 -24
9 9 9 9
9 9
1
2
-24 -24 •24
•24 -24 •24 -24 •24
9 9
-24 -24 -24 •24
2
S L
L L L L L
L
L
H H
L L L
L 5
7
H H H H L L L L
H H H H H
H
7
9 L
L
L
L
H
L
H H L L L L L L 9
10 L L L L
H
L
H H L L L L
L
L
to
13
*9.5 •9.5
9.5
9.5 •24 9.5
-24 •24
*9.5 9.5 +9.5 +9.5
+9.5 +9.5 13
14
-24 -24
-24
•24
9
•24
9 9
-24 -24 -24
•24
-24
•24
14
US
1
-24 •24 -24 •24 •24 •24 24
•24 •24 •24 -24 •24 -24 •24
1
2
-24
-24 -24
0
-24 •24 •24 •24 •24
9
-24 -24 -24 -24
2
S L L
L
H
L L L L L
H
L
L
L
L 5
7 L L L t L L
L L L L L L L L
7
9
H H H L
H H
L L
H
L L
L
H H
9
11
L L L L L
L H
H
L L
H H
L L
11
13
-24 -24 -24
-24 -24 •24
9 9
-24
-24
9.9
9
•24 -24
13
14 H
0 9
•24
9
+1
-24 -24
9
•24 •24 •24 1
1
14
U6
1
1
0
-24 •24 •24 •24
9
•24
•24
-24
24
•24 1 +1
1
2
•24 -24 •24
9
•24 •24
•24 -24 •24
9
•24 •24 •24 -24
2
5
L L L H L L L L L
H L L L L 5
7
H H
L L L
L H L L L L L
H H 7
9 L L L L L L
H
L L
L L L L L
9
11
L L L L L L
L L L L
H
L L
L
11
13
•24 -24 -24 -24 -24 •24 -24 -24 •24
•24
9.9
•24 -24 -24
13
14
•24 -24 •24
•24
•24 -24
9
-24
•24 •24 -24 •24 •24 -24 14
U8
1
•24
-24 •24 -24 •24 •24 •24 •24 •24 •24
24
•24
-24 •24
1
2
•24
9
•24 •24 •24 -24
9
24
•24
24
-24 •24 -24
24
2
4 H
L
H H H H L H H H H
H H H
4
7 L 1 L
L L L L L L L L L L L
7
9 L L L L L L L L L L
L
C
L L 9
11 B B H H 8 8 B B
H H
B
H
L L
11
13
•24 •24
9 9
•24 •24 •24 •24
9
e
•24
9
-24 •24
13
14
•24 •24
•24
•24
•24
-24
-24 •24 -24 -24 •24 •24 •24 •24
14
U9
1
-24 -24
-24 •24
9
-1 •24
9
•24 -24
24 24
24 •24
2
2
•24 •24 -24 •24 •24 -24 •24 •24 •24 -24 •24 •24 •24 •24
2
S L L L L L L L
L
L
L
L
L L L 5
7 L L L L
H H L H L L L L L L 7
9 H L L L L L L L L L L L
H H
9
11 H H H H H H H H H H H H H H
11
14 «9.5
-24 -24 •24 -24 -24 -24 •24 •24 -24 -24 •24
+9.5 +9.5 14
The symbol* L and H refer to TTL loflic
levels where L is < B V
dc and H is > 2.2 V dc.
8-51