Convergence Instruments ACAM 64, Руководство пользователя

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ACAM_64 8
1. Connect the instrument to an available USB connector on the PC.
2. Make sure that the operation LED turns green. If not, review the installation procedure, or see
section Troubleshooting
3. Go to
Start\All-Programs\Convergence_Instruments\Instrument_Manager
and run
Instrument_Manager.exe
.
4. The front-panel described in Figure 2 appears, and the application tries to connect to the
instrument. If it fails to find the instrument it indicates
No Device Found
. If this is the case, see
section
Troubleshooting
5. Otherwise, the application immediately starts communicating with the
ACAM_64 and presents
the acoustic image on the screen .
7.2 Main Functions
The front-panel of the application has several fields:
7.2.1 Image Field
The image field displays the real-time acoustic image captured by the instrument. The image is auto
scaled in contrast and brightness.
7.2.2 Cursors
In
Tracking
mode, the cursor follows the highest pixel in the image. That is also where the beamformer
is pointing.
In
No-Track
mode, the cursor can be grabbed and moved manually to steer the beamformer to a specific
location. The yellow curve in the trace of past levels shows the level measured at the position of the
cursor.
7.2.3 Instrument Information Fields
These fields present information about the instrument. The
User_ID
can be set to any alphanumeric
string (limited to 32 characters). This is used to identify the instrument to something pertinent to the user.
7.2.4 Frequency Response
This shows the frequency response of the camera.
7.2.5 Frequency Response Controls
This pair of controls select the lowest and highest frequencies processed by the acoustic imager. Note
that the resolution of the camera is dependent on the frequencies that it is imaging. Lower frequencies
produce images that have a very low resolution, while higher frequencies can show finer details. The two
controls allow the response of the imager to be selected between a very wide frequency range (the
default) to a very narrow one. By choosing a very narrow band and changing this band different images
can be produced to show the effects of various frequency components in a source.
7.2.6 Trace of Past Levels
This white curve presents the highest level in the image (in dB-SPL), as a function of time. The yellow
curve shows the level at the location of the cursor. The blue curve presents the lowest level in the image.
These levels represent the contribution of the corresponding source to the measured level at the location
of the camera.