C
ONNECT
STC
S
TO
D
ISCRETE
I/O
5-8
D
ed
ic
a
te
d
I
/O
-
P
C
I
O
u
tp
u
t
W
ir
in
g
Dedicated I/O - PCI
Output Wiring
Amplifier Enable Wiring
Figure 5-8
Example of Active Low Enable at Amp
Figure 5-9
Example of Active High Enable at Amp
PCI
Internal
Logic
C
E
Amplifier
Amp Enable Input
(
Active LOW)
GND
Opto-Isolator
Amp_En0_C
Amp_En0_E
Active Low Enable at Amp
R
+5V/24V
Note:
Verify that V
CE
of the output is less
than V
IL
for the amplifier’s enable input.
+5V:
R= 1K
+24V: R= 4.7K
PCI
Internal
Logic
C
E
Amplifier
Amp Enable Input
(
Active High)
GND
Opto-Isolator
Amp_En0_C
Amp_En0_E
Active High Enable at Amp
+5V/24V
R
+5V: R= 1K
+24V: R= 4.7K
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