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Contents
C HA PTER 1
1.1
IN TR O D U C TION .......................................................................................................
MOTIVATION FOR AN AUTOMATED BENCH TESTING SYSTEM ............................................
PREVIOUS W ORK ......................................................................................................................
INSTRUM ENTATION A M PLIFIERS .............................................................................................
1.2
1.3
1.3.1
1.3.2
1.3.3
1.4
10
10
11
12
The Ideal Instrum entationA mplifier ...............................................................................
The R eal Instrumentation A mplifier...............................................................................
INA 126P Parameter Specifications.................................................................................
14
15
O VERVIEW OF THE A UTOM ATED BENCH SYSTEM ..................................................................
18
CHAPTER 2
TEST METHODS FOR DC PARAMETERS.............................................................
17
20
2.1
2.2
2.3
2.4
2.5
M EASURING
M EASURING
M EASURING
M EASURING
V OS .....................................................................................................................
PSR R ...................................................................................................................
C M R R .................................................................................................................
IQ .........................................................................................................................
M EASURING IB+, IB- AND IOS .............................................................................................
20
22
22
24
25
2.6
M EASURING SW + AND SW-.....................................................................................................
26
2.7
M EASURING G ERR ..................................................................................................................
27
C HA PTER 3
3.1
29
PXI Chassis..........................................................................................................................
DigitalI/O Module...............................................................................................................
A nalog Output Module....................................................................................................
Signal Muxes .......................................................................................................................
DigitalMultim eter Module...............................................................................................
Power Supplies.....................................................................................................................
R esource InterfaceB oard................................................................................................
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29
30
30
31
31
31
TEST C ONFIGURATION BOARD ..............................................................................................
33
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.3
3.4
R esource Interface Connectors........................................................................................
Voltage R egulators...............................................................................................................
Input Circuitry.....................................................................................................................
D UT Interface......................................................................................................................
Output Measurement Circuitry........................................................................................
D U T SOCKET A DAPTERS ......................................................................................................
THE D ESKTOP C OM PUTER ....................................................................................................
C H APTER 4
4.1
28
RESOURCE HARDW ARE ............................................................................................................
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
3.1.7
3.2
SY STEM H A RD WA R E ................................................................................................
SY STEM SO FTW A RE .................................................................................................
THE A UXILIARY SUBV IS ..........................................................................................................
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.1.9
4.1.10
4.1.11
4.1.12
4.1.13
4.1.14
IA
IA
IA
IA
IA
IA
IA
Power to BoardR egulators ON ..................................................................................
Power to BoardR egulators OFF...............................................................................
Set D U T Supplies.......................................................................................................
D U T Supplies OFF.....................................................................................................
SE T Selected R elays ....................................................................................................
RESE T Selected R elays ...............................................................................................
RESE T A LL R elays....................................................................................................
IA Output CM Voltage Gain3 .............................................................................................
IA Output MDA C Voltage ...............................................................................................
IA Select M UXN Output.................................................................................................
IA Select M UXP Output .............................................................................................
IA EnableM UX N ........................................................................................................
IA EnableM UX P.........................................................................................................
IA D isableM UX N .........................................................................................................
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36
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. 51
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