Keithley 2790 - Page 10

5 Inflator Testing
Figure 5-1 System connections ................................................................ 5-3
Figure 5-2 Test connections – shunt bar and bridgewire
testing – single stage inflator ............................................ 5-5
Figure 5-3 Test connections – shunt bar, HIPOT, and bridgewire
testing – single stage inflator ............................................ 5-6
Figure 5-4 Test connections – shunt bar and bridgewire bar
testing – dual stage inflator ............................................... 5-7
Figure 5-5 Test connections – shunt bar, HIPOT, and bridgewire
testing – dual stage inflator ............................................... 5-8
Figure 5-6 Interlock connections ............................................................. 5-9
Figure 5-7 Test circuit – shunt bar ......................................................... 5-11
Figure 5-8 Test circuit – bridgewire tests ............................................... 5-14
Figure 5-9 Test circuits – contact check – single stage inflator ............. 5-19
Figure 5-10 Test circuits – contact check – dual stage inflator ................ 5-19
Figure 5-11 V-source readback circuit ..................................................... 5-22
Figure 5-12 Test circuit – HIPOT ............................................................ 5-25
Figure 5-13 I-source readback circuit ...................................................... 5-29
Figure 5-14 Test circuits – memory patterns – dual stage
inflator contact test ......................................................... 5-30
6 Model 2790 DMM
Ohms Functions
Figure 6-1 Using W2 function to measure resistance .............................. 6-3
Figure 6-2 Using W4 function to measure resistance .............................. 6-4
Figure 6-3 Using Model 2790 4-wire ohms with 7702 module
(low ohms measurements) ................................................ 6-6
Figure 6-4 Using Model 2790 2-wire ohms with 7702 module
(high ohms measurements) ............................................... 6-7
Figure 6-5 Using Model 2790 4-wire ohms with 7751/7752/7753
module (low ohms measurements) ................................... 6-8
Figure 6-6 Using Model 2790 2-wire ohms with 7751/7752/7753
module (high ohms measurements) .................................. 6-9