National Instruments SCXI-1121 Calibration Procedure page 6

1
3
2
1
1 Thumbscrews
2 Voltage and Current Adjust
3 Front Connector
4 Serial Number
5 Output Null Adjust Potentiometers
6 Second-Stage Filter Jumpers
7 Rear Signal Connector
8 Product Name, Assembly Number, Revision Letter
9 SCXIbus Connector
SCXI-1121 Calibration Procedure
4
S/N
Q1 U1 U3
AD705 GAINDIP AD705 ISO122P
W4
R2 Q2
U4
A B A B C D A B D E A
1 1 R11 1 1 W16
R12
R10
R8
U10
R9 Q4
D3 Q3 D4 U11
Q5 U16
U15
U17
C70
GAINDIP AD705 ISO122P
AD705
W20
R16
Q6
U18
A B A B C D A B C D E A B
1 1 R21 1 1
W24
R22
U24
R18 R20
U23
R19
D11 Q7 D12 Q8
Q9 U29
U28
C105 U30
AD705 GAINDIP AD705 ISO122P
W30
R26
Q10
U31
A B A B C D A B C D E A B
1 1 R31 1 1
W36
R32
U35
R30
R28
U34
R29
D25 Q12
D24 Q11
Q14 U41
U40
U42
C125
GAINDIP ISO122P
AD705 AD705
W42
R36 Q15
R273
U43
A B A B C D A B C D E A B
1 1 R41 1 W47 1 W48
R42
R40
R38
U45
R39 D33 Q19 D34 Q20 U46
16 15 14 13
R36
Q15
R273
A B A B C D A B C D
W47
15 17
Figure 3. SCXI-1121 Parts Locator Diagram
5 6
C2 C3
U6
U8
W6
R3
W7
U5
U7
W8
R4
W9
W10
R5
W11
W12
R6
W13
U20
RES
7915CT
20K U19
78M15
c
COPYRIGHT 1996
D7
D6
SCXI-1121
C21
ASSY181505F-01
C425
C14 +
C16
+
D21
D5
U25
C18 C27
+
RES
20K
W25 L1
U27
1 U21
D13
C26
D14
R99
C25
+
U36
D26
RES U38
20K D27
C29
+ U32
PRIMARY
1
W37
U61
D28 D29
Q16 Q17
C32
+ D35
U60
RES D36
20K
W49
1
C143
U47
C36
U44
+
C34
D37 D38
10
12 11
W42
E A B
W48
11
10
Front
10 Terminal Block Mounting Hole
11 Excitation Level Jumpers
12 First-Stage Filter Jumpers
13 Second-Stage Gain Jumpers
14 First-Stage Gain Jumpers
15 Half-Bridge Completion Jumpers
16 Input Null Adjust Potentiometers
17 Excitation Mode Jumpers
18 Grounding Screw
6
U9
1
7
C22
+
8
+
L2
A
C85
B
R2 R1 R0 1
W32
W38
1
9
W45
1
C38
D39
C39
18
Rear
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