Hardware manual

2 MVS-8100L Hardware Description
Cognex MVS-8100L Hardware Manual 25
Output Power Indicator LEDs
Four LEDs on the top edge of the MVS-8100L show the status of the resettable fuses for
the four camera ports. The LEDs are normally illuminated when power is on. When an
LED is off, it indicates an overcurrent fault on the associated camera port. The ports are
protected by PolySwitch resettable fuses, so that removing the overcurrent condition
should re-illuminate the LED.
Note Overcurrent conditions should be corrected immediately.
When all four indicators are out, it usually indicates a bad power source. In this case,
check the position of jumper JP1: if this jumper is in the EXT position (pins 2-3 covered),
then you must have the external power cable connected to the jack at JP2, and
connected to the PC’s power supply. See Installing the MVS-8100L, step 3 on page 11.
Figure 11 shows the locations of the indicator LEDs for the camera ports. Note that the
LEDs do not correspond to camera ports in numerical order.
Figure 11. Top view of MVS-8100L showing camera power indicator LEDs
Camera Ports
The MVS-8100L receives analog video signals through four video input ports referred to
as camera 0, 1, 2, and 3. Each video port can also supply power and synchronization
signals to its camera.
Camera expansion
Power LEDS
Rear of PC
header
1023
Camera port
Camera
D1 D2 D3 D4