55
Piranha2 User’s Manual
•
No test pattern or bad test pattern
— May indicate a problem with the camera (e.g.
missing bit) or a system setup problem (e.g. frame grabber or timing). Verify the
presence of the LVAL and STROBE signals.
•
Test pattern successful
— Run the
svm 0
command to deactivate video correction.
Then run the
gl
command under both dark and light conditions to retrieve a line of
raw video (no digital processing). Under dark conditions, with factory settings, the
analog offset value should be within the specified range (refer to the user
specifications). Adjust the analog offset using the
cao
or
sao
commands. Under
light conditions, you should receive a value.
Verify Voltage
To check the camera’s input voltages and internal voltages, use the
vv
command. If they
are within the proper range, the camera returns OK>. Otherwise the camera returns an
error message.
Verify Temperature
To check the internal temperature of the camera, use the
vt
command. For proper
operation, this value should not exceed 75°C.
Verify Pixel Coefficients
To activate video correction, send the command
svm 1
. Then use the
dpc
command to
display the pixel coefficients in the order FPN, PRNU, FPN, PRNU… The camera also
returns the pixel number with each coefficient.
End-of-line Sequence
To further aid debugging, the camera can generate an end-of-line sequence. The end-of-
line-sequence outputs "aa", "55", "line counter", "line average", "pixels above threshold",
"pixels below threshold". To activate the end-of-line sequence, use the command
els 1
.
To disable the end-of-line sequence, use the command
els 0
.
Use the
sut
and
slt
commands to set threshold values between 0 and 255 for 8-bit data
modes, or 0 to 1023 for 10-bit data modes.
LED Status
Located on the back of the camera is a red/green LED used to display the operational
status of the camera. Red lights indicate errors or warnings and green lights indicate
progress and OKs. Error and warning states are accompanied by corresponding messages
further describing current camera status.
Monitoring Tasks
The camera enters a warning state when any of the camera's continuously running
monitoring tasks detects a failure. Use the
wed
command to display the status of all the
defined monitory tasks (if no parameter is passed) and/or to enable/disable specific
monitoring tasks.
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