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3 Interfaces
LED Flash Controller
The LED Flash Controller is designed as a current source. Output current, flash duration
and other parameters can be set via software.
The following diagram shows the simplified internal structure for the LED Controller:
VisionCam
+24V
Power
GND
Supply
CPU
The software API allows selection between the internal ring-light (optional) and the exter-
nal connector. See chapter 3.1 for connector pinout.
When initializing the strobe controller using the API, the user has to specify a load voltage
for the given current value (see SetLimits() and SetFixedCurrent()). This information
is used to protect the internal circuit against overload by increasing the minimum OFF-
time or by limiting the current value. If there load voltage is not exactly known, lower
values should be used because this provides more protection.
With the internal ring-light, the following load voltages should be used:
Strassheimer Str. 45; 61169 Friedberg; Germany; Tel. +49(0)6031-6842611; Fax +49(0)6031-6842612
Strobe
enable
Real-Time
Current
Communication
reference
Controller
(FPGA)
Current
value
Figure 3: LED Controller structure
Current (mA)
100...499
500...999
1000...1499
1500...1999
2000
IMAGO Technologies GmbH
info@imago-technologies.com; www.imago-technologies.com
Output Channel
Filter
Current
Regulation
R
Sense
Load voltage (V)
8
10
12
15
17
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LED +
Ext. LED
Int. LED
Lighting
ring-light
Unit
LED -
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