Prosilica GX Technical Manual V2.0.8
46
Camera interfaces
Out (1 to 4)
These signals are optically isolated and require the user to provide a high volt-
age level (
Isolated Out Power
) and signal common (
Isolated IO GND
).
Iso-
lated Out Power
can be from 5 V to 24 V. An example of the functional circuit is
indicated in the diagram below.
Various
Isolated Out Power
values and load values for the above circuit are
indicated in the following table. Trigger current,
OUT ICC
, is a function of
Iso-
lated Out Power
voltage and load resistor
R
.
Figure 30: Prosilica GX output trigger circuit
Note
Toshiba TLP281-4GB consist of photo transistor, optically cou-
pled to a GaAsP light emitting diode and an integrated high
gain photo detector. These are used for the opto-isolated cam-
era outputs.
ISOLATED
OUT POWER
OUT
ICC
R
V LOAD
R POWER
DISSIPATION
T
1
T
2
T
3
T
4
5 V
8 mA
500 Ω
4.1 V
32 mW
1.5 μs
6.5 μs
2 μs
14 μs
5 V
4.8 mA
1 KΩ
4.8 V
23 mW
1.5 μs
5 μs
17 μs
40 μs
12 V
9.2 mA
1.2 KΩ
11.2 V
101 mW
1.5 μs
11.2 μs
2 μs
20 μs
12 V
4.9 mA
2.4 KΩ
11.8 V
58 mW
1.5 μs
8.5 μs
17 μs
55 μs
24 V
9.5 mA
2.4 KΩ
23.2 V
217 mW
1.5 μs
22 μs
2 μs
37 μs
24 V
5 mA
4.8 KΩ
23.8 V
120 mW
1.5 μs
12 μs
17 μs
105 μs
Table 15: Prosilica GX trigger circuit values
T
4
T
2
T
3
CAMERA LOGIC SIGNAL
OUT
T
1
100K
442R
ISOLATED OUT POWER
R
ISOLATED IO GND
EXTERNAL
CAMERA INTERNAL
1
2
16
15
3.3 V CAMERA
LOGIC SIGNAL
OUT(1 to 4)
TLP281-4GB
