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Cheetah 18FC Installation Guide, Rev. A 25
Table 1: FC-SCA pin descriptions
Pin/contact Signal name Signal type
1* –EN bypass port A TTL output
2* 12 Volts
3* 12 Volts
4* 12 Volts
5* –Parallel ESI
6* Ground
[1]
7* Active LED out Open collector out
8* Reserved
9* Start_1 TTL input
10* Start_2 TTL input
11* –EN bypass port B TTL output
12* SEL_6 TTL input/output
13* SEL_5 TTL input/output
14* SEL_4 TTL input/output
15* SEL_3 TTL input/output
16* Fault LED out Open collector out
17* Reserved NC
18* Reserved NC
19* 5 Volts
20* 5 Volts
21 12 Volts charge
22 Ground
23 Ground
24* +Port A_in Diff. PECL input pair
25* –Port A_in