Specifications

19-464 | OWNER’S GUIDE
Using the DEWE-CAM-USB within DS-7 software
As mentioned earlier, the drivers must be installed within the Windows operating system.
Step 1
Connect the camera to your DEWE system.
Step 2
Start the DS-7 software.
First Time Setup Steps
You need to turn on DirectX VIDEO support within DS-7. To do this, select SETTINGS then HARDWARE
SETUP. This will open the hardware settings dialog box. Click on the VIDEO tab and then place a check-
mark on the DirectX box. If the WIndows driver has been properly installed, the camera will show up in the
list.
The name in the screen capture shown above is gurative - yours will be different. Make sure that your
camera is enabled.
Adjusting for Camera Delay
Since USB camera video frames have to be processed by the CPU, there is always a small latency or delay,
between when the camera “sees” the image and when the frame is processed. This latency can be offset
automatically at the time of recording. But in order to know how many milliseconds the delay is, we need to
measure it rst. Here are the steps:
First, connect a sensor by which you can create a sharp spike which can be
seen within the camera image. A perfect example would be tapping on an
accelerometer, or microphone. In the same way that lm crews use a “slate”
clapper in order to later align the video with the audio: the precise moment
that the clapper comes together creates an audio spike which makes it easy
to align the two media. Do a short recording using your video camera and
sensor. Click ANALYSIS to replay the data. Use the cursors on the recorder
graph to measure the number of ms that the video lags behind the data.
Now go back to the Hardware Settings screen, video tab, and enter that num-
ber into the DELAY eld. In future recordings, the video will be aligned better
with the data.