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I0
S0
00
C
S1
08
C
S2
16
C
S3
24
C
Close this channel to connect S to I.
38 Using the Form C Switch
Connect These Common (C)
Channel Numbers Together
5, 13, 21, and 29
6, 14, 22, and 30
7, 15, 23, and 31
Close the channel number enclosed in the circle in Figure 2-4 to connect the
corresponding row and column. This example closes channel 25 to connect
S3 to I1 and closes channel 20 to connect S2 to I4. To close channels 20
and 25, execute the following. To open the channels, use OPEN
(@120,125).
10 DISP "Testing Switch Matrix"
20 OUTPUT 70915; "CLOS (@120,125)" !Close channels 20 and 25. 1 is
30 END
I1
I2
NO
NO
NO
01
02
C
C
NO
NO
NO
09
10
C
C
NO
NO
NO
17
18
C
C
NO
NO
NO
25
26
C
C
Figure 2-4. Example: Matrix Switching
Table 2-3. Matrix Switching Connections
I3
I4
I5
NO
NO
03
04
C
C
NO
NO
11
12
C
C
NO
NO
19
20
C
C
NO
NO
27
28
C
C
Connect These Normally Open (NO)
Channel Numbers Together
the card number; 20 and 25 are
channel numbers.
I6
I7
NO
NO
05
06
C
C
C
NO
NO
13
14
C
C
C
NO
NO
21
22
C
C
C
NO
NO
29
30
C
C
C
NO
07
NO
15
NO
23
NO
31
Chapter 2
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