TB 9-4920-456-24
Test instrument
CODE/ATTEN SELECT entries1
switch position
INPUT/OUTPUT
indications
SELECT S1
Mode key
Numerical code
(levels)2
S2
A
15
M-3/A
0000
High
A
16
M-3/A
0002
Low
A
16
M-3/A
0000
High
A
17
M-3/A
0004
Low
A
17
M-3/A
0000
High
B
1
M-C
1000
Low
B
1
M-C
0000
High
B
2
M-C
2000
Low
B
2
M-C
0000
High
B
3
M-C
4000
Low
B
3
M-C
0000
High
B
4
M-C
0100
Low
B
4
M-C
0000
High
B
5
M-C
0200
Low
B
5
M-C
0000
High
B
6
M-C
0400
Low
B
6
M-C
0000
High
B
7
M-C
0010
Low
B
7
M-C
0000
High
B
8
M-C
0020
Low
B
8
M-C
0000
High
B
9
M-C
0040
Low
B
9
M-C
0000
High
B
10
M-C
0002
Low
B
10
M-C
0000
High
B
11
M-C
0004
Low
B
11
M-C
0000
High
ENTER key must be pressed each time a numerical code is selected.
1
Low level is approximately 0.4 V dc or less. High level is approximately 28 V dc.
2
NOTE
High level (approximately 28 V dc) and low level signals (less
than 0.4 V dc) are verified rather than actual values in table 4.
(3) Press TI CODE/ATTEN SELECT and numerical keys as listed in table 5 to
verify TI response to each code with an invalid message.
Table 5. Invalid Messages.
Test instrument
Test instrument
CODE/ATTEN
CODE/ATTEN
SELECT
SELECT
mode keys
mode keys
Numerical keys1
Numerical keys1
M-1
7400
M-1
7777
M-1
7500
M-1
8888
M-1
7600
M-1
9999
See footnotes at end of table.
11