Specifications
34
Manta Technical Manual V7.9.0
Sensor tap mode (CCD models only)
With dual-tap sensor mode you can achieve a higher frame rate than with one-tap
mode. With one-tap sensor mode, you can achieve an image certain to be free of
any tap-boundary artifacts. You can also use one-tap mode if you experience tap
imbalance issues with your camera. You can change the sensor digitization tap
mode in Vimba Viewer 2.0 or later. Applicable to dual-tap cameras as detailed in
the specification tables.
Affected features
This table lists features which are affected when switching from dual-tap to one-
tap sensor mode.
Absolute quantum efficiency plots
Image acquisition must be stopped before changing sensor tap mode.
Feature
Dual-tap mode
One-tap mode
ReverseX
Available
Not available
ReverseY
Available
Not available
DecimationHorizontal
Available
Not available
DecimationVertical
Available
Not available
Important notice before reading the quantum efficiency plots
All measurements were done without protection glass or IR cut filter. With
protection glass or filters, quantum efficiency (QE) decreases by approximately
10%.
The uncertainty in measurement of the QE values is
10.25%. This is mainly due
to uncertainties in the measuring apparatus itself (Ulbricht sphere, optometer,
etc.). Manufacturing tolerance of the sensor increases overall uncertainty.
The measurements for Manta G-145B NIR in figure 23: and figure 24: were done
with a different method to illustrate the effect of the NIR mode.
Absolute QE plots for Sony CCD/CMOS sensors
Sony provides relative response curves in their sensor data sheets. To create the
absolute QE plots shown in this chapter, the relative response was converted to a
normalized QE response and then adjusted as per three measured QE values
(@ 448 nm, 529 nm, 632 nm) for color sensors and one measured QE value
(@ 529 nm) for monochrome sensors.
