TB 9-4920-456-24
9. Keyboard Input/Output (I/O) Test
a. Performance Check
(1) C o n n e c t m u l ti m e te r t o V O L T M E T E R ( L G C ) t e s t j a c k s o n c a l i b ra t i o n
t e s t fixture.
NOTE
ENTER key must be pressed on TI CODE/ATTEN SELECT
keyboard each time a code is selected.
(2) Set SELECT S1 and INPUT/OUTPUT S2 switches on calibration test fixture
and press TI CODE/ATTEN SELECT keys as listed to verify multimeter indication for
each entry listed in table 4.
Table 4. Dc Keyboard Test.
Calibration test fixture
Test instrument
CODE/ATTEN SELECT entries1
switch position
INPUT/OUTPUT
indications
SELECT S1
Mode key
Numerical code
(levels)2
S2
A
1
M-1
1000
Low
A
1
M-1
0000
High
A
2
M-1
2000
Low
A
2
M-1
0000
High
A
3
M-1
4000
Low
A
3
M-1
0000
High
A
4
M-1
0100
Low
A
4
M-1
0000
High
A
5
M-1
0200
Low
A
5
M-1
0000
High
A
6
M-3/A
1000
Low
A
6
M-3/A
0000
High
A
7
M-3/A
2000
Low
A
7
M-3/A
0000
High
A
8
M-3/A
4000
Low
A
8
M-3/A
0000
High
A
9
M-3/A
0100
Low
A
9
M-3/A
0000
High
A
10
M-3/A
0200
Low
A
10
M-3/A
0000
High
A
11
M-3/A
0400
Low
A
11
M-3/A
0000
High
A
12
M-3/A
0100
High
A
12
M-3/A
0000
High
A
13
M-3/A
0020
Low
A
13
M-3/A
0000
High
A
14
M-3/A
0040
Low
A
14
M-3/A
0000
High
A
15
M-3/A
0001
Low
See footnotes at end of table.
