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Keithley 2790 - Figure 5-10 Test Circuits - Contact Check - Dual Stage Inflator; Figure 5-9 Test Circuits - Contact Check - Single Stage Inflator

Keithley 2790
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Model 2790 SourceMeter
®
Switch System User’s Manual 5-19
Figure 5-9
Test circuits – contact check – single stage inflator
Figure 5-10
Test circuits – contact check – dual stage inflator
1
Single Stage
Inflator
2790
DMM
Lo
Lo
2
2790
DMM
Hi
Hi
2
14
8
15
Test assumptions:
Inflator housing connected to Bank 3
Inflator bridgewire connected to Bank 1
Bank 3
Bank 1
= Closed channel switch
Contact Point
(1 of 2)
18
18
NOTE Each channel is a 2-pole
switch. Therefore, when a
channel is closed, two
switches close (see
schematic in Figure 2-1).
Keithley 7751/7753
Internal 0.062A
fuses not shown
(see Section 6)
1
Dual Stage
Inflator
2790
DMM
Lo
Lo
2
2790
DMM
Hi
2
Hi
2790
DMM
Hi
Hi
2
A
B
14
8
15
4
14
Test assumptions:
Inflator housing connected to Bank 3
Bridgewire A connected to Bank 1
Bridgewire B connected to Bank 2
Bank 3
Bank 1
Bank 2
= Closed channel switch
Contact Point
(1 of 3)
18
18
18
NOTE Each channel is a 2-pole
switch. Therefore, when a
channel is closed, two
switches close (see schematic
in Figure 2-1).
Keithley 7751/7753
Internal 0.062A
fuses not shown
(see Section 6)

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