Basler racer User Manual

AW00118508000 Acquisition Control
Basler racer Camera Link 78
Example
Assume that you are using an raL2048-80km camera at full resolution (2048 pixels), assume that
you want to use the maximum allowed line acquisition rate (equivalent to the minimum allowed line
acquisition period), and the default value for C
1
.
Also assume that the other relevant settings (e.g. Camera Link clock speed and Camera Link tap
geometry) are in accord with operation at 80.6 kHz.
The camera is nominally capable of 80000 line acquisitions per second (80 kHz) at full resolution.
Actually, however, it is capable of up to approximately 80600 line acquisitions per second.
Accordingly, the corresponding minimum allowed ExLSTrig signal period where overtriggering is
avoided is calculated as:
ExLSTrig signal period = 1/80600 [lines/s] = 12.4 µs.
Note that this ExLSTrig signal period equals the actual minimum allowed line acquisition period.
From condition number three follows the maximum possible exposure time that is compatible with
maximum overlap:
E = min. ExLSTrig Signal Period - F
E = 12.4 µs - 5.4 µs = 7 µs
Therefore, when operating the camera at a line acquisition rate of 80.6 kHz (involving maximum
overlap) and using the default value for C
1
, the maximum possible exposure time is 7 µs. When also
considering the above condition number one, it follows that the exposure time can range between
2 µs and 7 µs to be in accord with camera operation at a line rate of 80.6 kHz.
raL2048-
80km
raL4096-
80km
raL6144-
80km
raL8192-
80km
raL12288-
66km
Nominal Maximum Allowed Line
Acquisition Rate
80000 lines/s 80000 lines/s 80000 lines/s 80000 lines/s 66000 lines/s
Actual Maximum Allowed Line
Acquisition Rate (approx. values)
80600 lines/s 80600 lines/s 80600 lines/s 80600 lines/s 66000 lines/s
Actual Minimum Allowed Line
Acquisition Period
12.4 µs 12.4 µs 12.4 µs 12.4 µs 15.1 µs
E, for F
≥ 5.4
(This Applies When the
Parameter Limit is Not Removed
from the ExposureOverhead
Parameter)
2.0 µs to
7.0 µs
2.0 µs to
7.0 µs
2.0 µs to
7.0 µs
2.0 µs to
7.0 µs
2.0 µs to
9.7 µs
E, for F
≥ 3.4
(This Applies When the
Parameter Limit is Removed from
the ExposureOverhead
Parameter)
2.0 µs to
9.0 µs
2.0 µs to
9.0 µs
2.0 µs to
9.0 µs
2.0 µs to
9.0 µs
2.0 µs to
11.7 µs
Table 14: Minimum and Maximum Allowed Exposure Times at Maximum Allowed Line Acquisition Rate and
Optimum ExposureOverlapTimeMaxAbs Parameter Value Settings

Basler racer Specifications

General

Brand	Basler
Model	racer
Category	Digital Camera
Language	English