Keithley 2790 User Manual

Model 2790 SourceMeter
®
Switch System User’s Manual 5-15
Test procedure
Single stage inflator — Perform Test Steps 1 through 7 in Table 5-2.
Dual stage inflator — Perform Test Steps 1 through 11 in Table 5-2.
WARNING To prevent accidental ignition of the inflator, ALWAYS open all chan-
nels in the test system at the beginning and end of each test.
Table 5-2
Test procedure – bridgewire
Test Step Command Sequence Front Panel Operation
1) Reset 2790 and
open all channels.
*RST Press SHIFT > press SETUP > select RESTORE:
FACT.
2) Set I-source to
50mA.
SOUR:CURR 0.05,(@127) Press SHIFT > press CARD > select CONFIG >
select SLOT1: 7751, 7752, or 7753 > set I-C27 to
50.00 mA > press ENTER > press EXIT or ENTER.
3) Select and enable
the low ohms
calculation.
CALC1:FORM S1I
CALC1:STAT ON
Press SHIFT > press MATH > select S1IOHMS.
4) Close channels to
test bridgewire.
ROUT:MULT:CLOS
(@101,102,117,118,121)
Press CLOSE > select MULTI > select 101 > select
102 > select 117 > select 118 > select 121> press
EXIT.
5) Verify channels
that are closed
(optional).
ROUT:MULT:CLOS? Press SHIFT > press CARD > select VIEW > select
SLOT1: 7751, 7752, or 7753. Press EXIT when
finished.
6) Perform
measurement.
READ? Take reading from display.
7) Open all channels. ROUT:OPEN:ALL Press OPEN > select ALL.
The following steps are used to test the second bridgewire of a dual stage inflator:
8) Close channels to
test 2nd bridgwire.
ROUT:MULT:CLOS
(@104,105,117,118,121)
Press CLOSE > select MULTI > select 104 >
select 105 > select 117 > select 118 > select 121 >
press EXIT.
9) Verify channels
that are closed
(optional).
ROUT:MULT:CLOS? Press SHIFT > press CARD > select VIEW > select
SLOT1: 7751, 7752, or 7753. Press EXIT when
finished.

Keithley 2790 Specifications

General

Brand	Keithley
Model	2790
Category	Switch
Language	English