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A p p e n d i x G : U s i n g t h e I / O s i g n a l s o f M a t r o x I r i s E - S e r i e s
• Power characteristics. The power characteristics describe the minimum and
maximum voltage and current for input and output signals.
M o d e
S y m b o l
V c c
t
u
p
I n
u t
V c c
t p
O u
I c c
C o n n e c t i n g e x t e r n a l d e v i c e s t o o u t p u t
s i g n a l s
You can control a wide variety of external devices with the output signals of your
Matrox Iris E-Series , such as programmable logic controllers (PLC),
transistor-transistor logic (TTL) devices, and strobe lamps.
Each of the output signals of your Matrox Iris E-Series use an open collector (sink
driver); instead of transmitting a high or low voltage state, a current from a
connected device is either terminated (grounded) or not. The power source must
be provided by the connected device because the Matrox Iris E-Series output
signals are not capable of providing (sourcing) voltage to drive a device. In the
circuit depicted below, the connected device is terminated.
ouput signal
Matrox Iris
Each of the sink drivers of your Matrox Iris E-Series uses a 100 mA fuse to protect
it from connected external devices. The fuse allows your Matrox Iris E-Series to
connect to an external device that requires more current than a typical TTL driver
can provide (up to 24 V).
D e s c r i p t i o n
I n p u t s i g n a l f o r a l o g i c a l 1 .
I n p u t s i g n a l f o r a l o g i c a l 0 .
L o a d v o l t a g e .
L o a d c u r r e n t .
100 mA
fuse
GND
M i n i m u m
2 V
0 V
Connected
External
Device
M a x i m u m
2 4 V
0 . 8 V
2 4 V
0 . 1 A
Power
source
+24 V
o
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