DMK 33UX287
Technical Reference ManualTable of Contents
1.

Quick Facts

4

2.

Dimensional Diagrams

6

2.1

DMK 33UX287 C-Mount with Tripod Adapter .............................................................. 6

2.2

DMK 33UX287 C-Mount without Tripod Adapter ........................................................ 7

2.3

DMK 33UX287 CS-Mount with Tripod Adapter ............................................................ 8

2.4

DMK 33UX287 CS-Mount without Tripod Adapter ...................................................... 93.

I/O Connector

103.112-pin I/O Connector ................................................................................................... 10
3.1.1
TRIGGER_IN ........................................................................................................... 11
3.1.2
STROBE_OUT ......................................................................................................... 11

4.
4.1

5.

Spectral Characteristics

12

Spectral Sensitivity - IMX287LLR-C ............................................................................... 12

Camera Controls

13

5.1
Sensor Readout Control ............................................................................................... 13
5.1.1
Pixel Format .......................................................................................................... 13
5.1.1.1
5.1.1.2
5.1.1.3

8-Bit Monochrome ....................................................................................................................... 13
12-Bit Packed Monochrome ........................................................................................................ 14
16-Bit Monochrome ..................................................................................................................... 14

5.1.2
Resolution ............................................................................................................. 14
5.1.3
Frame Rate ............................................................................................................ 15
5.1.4
Partial Scan Offset ................................................................................................. 16
5.1.5
Image Flipping ....................................................................................................... 17
5.2
Image Sensor Control ................................................................................................... 17
5.2.1
Exposure Time ....................................................................................................... 17
5.2.2
Gain ....................................................................................................................... 18
5.2.3
Black Level ............................................................................................................. 18
5.3
Automatic Exposure and Gain Control ....................................................................... 18
5.3.1
Auto Exposure ....................................................................................................... 19
5.3.2
Auto Gain .............................................................................................................. 19
5.3.3
Auto Reference Value ........................................................................................... 19
5.3.4
Highlight Reduction .............................................................................................. 20
5.3.5
Auto Exposure Limits ............................................................................................ 20
5.3.6
Auto Gain Limits ................................................................................................... 21
5.4
Trigger ........................................................................................................................... 22
5.4.1
Trigger Mode ......................................................................................................... 22
5.4.2
Trigger Polarity ...................................................................................................... 22
5.4.3
Software Trigger .................................................................................................... 22
5.4.4
Trigger Exposure Mode ......................................................................................... 23
5.4.5
Trigger Burst Count ............................................................................................... 23

DMK 33UX287 Technical Reference Manual2

Table of Contents
5.4.6
Trigger Source ........................................................................................................ 24
5.4.7
Trigger Overlap ...................................................................................................... 24
5.4.8
IMX Low-Latency Mode ......................................................................................... 24
5.5
Trigger Timing Parameters ........................................................................................... 25
5.5.1
Trigger Delay .......................................................................................................... 25
5.5.2
Trigger Debounce Time ......................................................................................... 25
5.5.3
Trigger Mask Time ................................................................................................. 26
5.5.4
Trigger Noise Suppression Time ........................................................................... 26
5.6
Digital I/O ..................................................................................................................... 26
5.6.1
General Purpose Input ......................................................................................... 26
5.6.2
General Purpose Output ...................................................................................... 27
5.7
Strobe ............................................................................................................................ 27
5.7.1
Strobe Enable ........................................................................................................ 27
5.7.2
Strobe Polarity ...................................................................................................... 28
5.7.3
Strobe Operation .................................................................................................. 28
5.7.4
Strobe Duration .................................................................................................... 29
5.7.5
Strobe Delay .......................................................................................................... 29
5.8
Image Processing .......................................................................................................... 29
5.8.1
Gamma .................................................................................................................. 29
5.8.2
Lookup Table ......................................................................................................... 30
5.9
Region of Interest for Auto Functions ......................................................................... 31
5.9.1
Auto Functions ROI Enable ................................................................................... 31
5.9.2
Auto Functions ROI Preset .................................................................................... 31
5.9.3
Auto Functions ROI Custom Rectangle ................................................................ 32
5.10
User Sets ....................................................................................................................... 33
5.10.1
User Set Selector ................................................................................................... 33
5.10.2
Load User Set ........................................................................................................ 33
5.10.3
Save User Set ......................................................................................................... 34
5.10.4
Default User Set .................................................................................................... 34

6.

Revision History

DMK 33UX287 Technical Reference Manual353Quick Facts
1

Quick Facts
GeneralVision Standard

USB3 Vision

Dynamic Range

12 bitResolution

720x540

Frame Rate at Full Resolution

539

Pixel Formats

8-Bit Monochrome
12-Bit Packed Monochrome
16-Bit Monochrome

Optical Interface
IR-Cut filterNo

Sensor TypeSony IMX287LLR-C

Shutter Type

GlobalSensor Format

1/2.9 inch

Pixel Size

6.9 µmLens Mount

C/CS

Electrical Interface
InterfaceUSB 3.0

Supply voltage

4.75 VDC to 5.25 VDC

Current consumption

approx 660 mA @ 5 VDC

I/O Connector

12-pin connector for trigger and strobe or
general purpose input/output

Mechanical Data
Dimensions

H: 29 mm, W: 29 mm, L: 43 mm

Mass

65 g

Adjustments
Shutter

1 µs to 30 s

Gain

0 dB to 48 dB

DMK 33UX287 Technical Reference Manual4Quick Facts
Environmental Conditions
Housing Temperature (operating)-5 °C to 50 °C

Temperature (storage)-20 °C to 80 °C

Humidity (operating)

20 % to 80 % (non-condensing)

Humidity (storage)

20 % to 95 % (non-condensing)

DMK 33UX287 Technical Reference Manual5Dimensional Diagrams
2

Dimensional Diagrams

2.1

DMK 33UX287 C-Mount with Tripod Adapter

DMK 33UX287 Technical Reference Manual6Dimensional Diagrams
2.2

DMK 33UX287 C-Mount without Tripod Adapter

DMK 33UX287 Technical Reference Manual7Dimensional Diagrams
2.3

DMK 33UX287 CS-Mount with Tripod Adapter

DMK 33UX287 Technical Reference Manual8Dimensional Diagrams
2.4

DMK 33UX287 CS-Mount without Tripod Adapter

DMK 33UX287 Technical Reference Manual9I/O Connector
3

I/O Connector

3.112-pin I/O Connector

Rear view of camera
Pin

SignalI/O

Remarks

Characteristics
Min

Typ

Max

Unit

1

do not use

-

-

-

-

-

2

do not use

-

-

-

-

-

3

n.c.

-

-

-

-

-

4

n.c.

-

-

-

-

-

5

n.c.

-

-

-

-

-

6

n.c.

-

-

-

-

-

7

GND_I/O

External Ground

-

-

-

-

8

n.c.

-

-

-

-

-

9

n.c.

-

-

-

-

-

10

STROBE_OUT

O3Open drain--

24.01 V

11

TRIGGER_IN (+)

I3

Optocoupler signal

3.32

-

24.02 V

12

TRIGGER_IN (-)

I3

Optocoupler ground

-

-

-

G3

-

1 max. 0.2A (ID) for open drain MOSFET!
2 min. 3.5 mA driver strength required!
3 G: Ground O: Output I: Input

The part number of this Hirose connector is HR10A10R-12P(73). To create an I/O cable
you need a Hirose connector HR10A-10P-12S(73).

DMK 33UX287 Technical Reference Manual10I/O Connector
3.1.1

TRIGGER_IN
The TRIGGER_IN line can be used to synchronize the start of the exposure time with external
events. The Trigger section describes in detail how the image sensor's behavior can becontrolled.
The current input signal can also be read directly through the General Purpose Input feature.

3.1.2

STROBE_OUT
The STROBE_OUT line's main usage is to indicate the integration time of the image sensor
which allows flashes, strobes or other light sources to be synchronized with camera
operation. The line's behavior can be controlled through the Strobe controls.
The output signal can also be directly controlled through the General Purpose Output
feature.

DMK 33UX287 Technical Reference Manual11Spectral Characteristics
4

Spectral Characteristics

4.1

Spectral Sensitivity - IMX287LLR-C

DMK 33UX287 Technical Reference Manual12Camera Controls
5

Camera Controls
This section describes the parameters available for the DMK 33UX287 camera.
The actual name of the parameter depends on the driver technology used to access thecamera. Parameter names are listed for the most common ways to access the cameras:· USB3 Vision (cross platform, via 3rd party driver)· UVC/V4L2 (on Linux, via uvcvideo)· IC Imaging Control (on Windows, via Device Driver for The Imaging Source USB 33U, 37U

and 38U Cameras)

5.1

Sensor Readout Control

5.1.1

Pixel Format
The pixel format defines the data type of the pixels transmitted to the computer. The bits
per pixel needed for a particular pixel format influence the required bandwith.
The way the pixel format is controlled varies significantly among the driver technology used
to access the camera:· When using USB3 Vision, the pixel format is controlled through the PixelFormat

GenICam feature.
· When using the uvcvideo driver on Linux, the pixel format is defined by video4linux2.
· When using IC Imaging Control, the pixel format is part of the video format - a parameter
which combines pixel format, resolution and readout mode. For more information, referto the IC Imaging Control documentation sections on VideoFormat andVideoFormatDesc.
The DMK 33UX287 monochrome camera supports multiple pixel formats with variable bitsper-pixel settings. The names of the pixel formats and the way to select them depends onthe driver used to control the camera. The following table contains a short overview of all
possible formats followed by a more detailed description.
Pixel Format

5.1.1.1

Bits Per Pixel

USB3 VisionUVC

TIS UVC Driver

8-Bit Monochrome 8

Mono8

Y800

Y800

12-Bit Packed
Monochrome12

Mono12p

Y12p

Y16

16-Bit Packed
Monochrome16

Mono16Y16

Y16

8-Bit Monochrome
This format transmits data using one byte for each pixel.
USB3 Vision drivers see this pixel format as Mono8.
UVC drivers see it with the FourCC Y800.

DMK 33UX287 Technical Reference Manual13Camera Controls
The Device Driver for The Imaging Source USB 33U, 37U and 38U Cameras offers this pixel
format as the Y800 video format.

5.1.1.2

12-Bit Packed Monochrome
This format transmits data using 3 bytes for each pair of 2 consecutive pixels.
USB3 Vision drivers see this pixel format as Mono12p.
UVC drivers see it with the FourCC Y12p.
The Device Driver for The Imaging Source USB 33U, 37U and 38U Cameras offers this pixel
format as the Y16 video format. Since the DMK 33UX287 camera offers both 12-bit packed
and 16-bit monochrome pixel formats, the driver will use the 12-bit packed format when
the Y16 video format is selected.

5.1.1.3

16-Bit Monochrome
The sensor of the DMK 33UX287 camera is not capable of providing 16-bit data output.
Instead, the pixel data is transmitted in the most significant bits which allows application
programs to ignore the sensor-specific data type, and treat the data as if the sensor
outputs 16 bits.
USB3 Vision drivers see this pixel format as Mono16.
UVC drivers see it with the FourCC Y16.
The Device Driver for The Imaging Source USB 33U, 37U and 38U Cameras offers this pixel
format as the Y16 video format.

5.1.2

Resolution
The DMK 33UX287 allows the user to specify which rectangular region of the image sensor
to read out during camera operation. The size of this rectangle determines the number ofpixels that have to be transferred for each frame and has a significant influence on therequired USB bandwidth.
Lowering the resolution also often allows the image sensor to operate at a higher frame
rate. Changes in the vertical resolution have more effect on the maximum frame rate thanchanges in the horizontal direction.
The way the resolution is controlled varies greatly between the driver technology used toaccess the camera:· When using USB3 Vision, the resolution is controlled through the GenICam features Widthand Height.
· When using the uvcvideo on Linux, the resolution is selected from a list of fixed formats.
Dynamic frame sizes are not available.
· When using IC Imaging Control, the resolution is part of the video format, a parameterthat combines pixel format, resolution and readout mode. For more information, refer tothe IC Imaging Control documentation sections on VideoFormat andVideoFormatDesc.

DMK 33UX287 Technical Reference Manual14

Camera Controls

5.1.3

Parameter

Horizontal Resolution

Minimum

256

Maximum

720

USB3 Vision: GenICam

WidthParameter

Vertical Resolution

Minimum

4

Maximum

540

USB3 Vision: GenICam

HeightFrame Rate
The frame rate is specified in frames per second and determines the camera's operating
speed.
The way the frame rate is controlled depends greatly upon which driver technology is used
to access the camera:· When using USB3 Vision, the frame rate is controlled through the GenICam feature

AcquisitionFrameRate.
· When using uvcvideo on Linux, the frame rate is selected from a list of available frame
rates.
· When using IC Imaging Control, the frame rate is selected from a list of available frame
rates through APIs such as Grabber::setFPS or
ICImagingControl.DeviceFrameRate.
The range of available frame rates depends upon other camera settings such as well, pixel
format, resolution and readout modes.
Parameter

Frame Rate

Minimum

Depending on Pixel Format, Resolution, and Readout Mode

Maximum

Depending on Pixel Format, Resolution, and Readout Mode

USB3 Vision: GenICam

AcquisitionFrameRate

The following tables show the maximum frame rate for some combinations of pixel format
and resolution.
8-Bit Monochrome
Width

HeightMaximum Frame Rate

720

540

539

640

480

601

DMK 33UX287 Technical Reference Manual15

Camera Controls

12-Bit Packed Monochrome
Width

HeightMaximum Frame Rate

720

540

338

640

480

377

Width

HeightMaximum Frame Rate

720

540

338

640

480

377

16-Bit Monochrome

5.1.4

Partial Scan Offset
If the selected resolution is smaller than the sensor size, the part of the sensor that is
actually read out can be specified by the Partial Scan Offset X and Partial Scan Offset Y
parameters. By default, the camera automatically positions the offsets so that the center ofthe sensor is used.
Parameter

Partial Scan Offset X

Minimum

0

Maximum464

USB3 Vision: GenICam

OffsetX

Video4Linux2

ROI Offset X

VCD Property

VCDID_PartialScanOffset\VCDElement_PartialScanOffsetX

Parameter

Partial Scan Offset Y

Minimum

0

Maximum

536

USB3 Vision: GenICam

OffsetY

Video4Linux2

ROI Offset Y

VCD Property

VCDID_PartialScanOffset\VCDElement_PartialScanOffsetY

If Partial Scan Offset X or Partial Scan Offset Y is configured to a value that would be invalid
with the current setting of Resolution setting, the camera uses the maximum possible value.

DMK 33UX287 Technical Reference Manual16Camera Controls
Parameter

Partial Scan Auto Center

On
True

Automatically configure Partial Scan Offset X/Y so that thecenter area of the sensor is read out

OffControl Partial Scan Offset X/Y manually

False

5.1.5

USB3 Vision: GenICam

OffsetAutoCenterVideo4Linux2

ROI Auto Center

VCD Property

VCDID_PartialScanOffset\VCDElement_PartialScanAutoCenter

Image Flipping
The DMK 33UX287 camera allows flipping of the image data horizontally, vertically, or both.
The Flip Horizontal and Flip Vertical parameters can be used to control this sensor feature.
Parameter

Flip Horizontal

True

Image data is flipped horizontally

False

Image data is not flipped horizontally

USB3 Vision: GenICam

ReverseX

Video4Linux2

Flip Horizontal

VCD Property

VCDID_FlipHorizontal\VCDElement_Value

Parameter

Flip Vertical

True

Image data is flipped vertically

False

Image data is not flipped vertically

USB3 Vision: GenICam

ReverseY

Video4Linux2

Flip Vertical

VCD Property

VCDID_FlipVertical\VCDElement_Value

5.2

Image Sensor Control

5.2.1

Exposure TimeThe Exposure Time parameter defines the time the camera opens its (electronic) shutter
when it is taking an image.

DMK 33UX287 Technical Reference Manual17Camera Controls

5.2.2

Parameter

Exposure Time

Minimum

1 µs

Maximum

30 s

Default

auto

USB3 Vision: GenICam

ExposureTime

Video4Linux2

Exposure Time (us)VCD Property

VCDID_Exposure\VCDElement_ValueGain
The Gain parameter defines the amplification that is applied to the image at sensor level.

5.2.3

Parameter

Gain

Minimum

0 dB

Maximum

48 dB

Default

auto

USB3 Vision: GenICam

Gain

Video4Linux2

Gain (db/100)

VCD Property

VCDID_Gain\VCDElement_Value

Black Level
The Black Level parameter defines the lowest possibly intensity value of the image sensor.

5.3

Parameter

Black Level

Minimum

0

Maximum

4095

Default

240

USB3 Vision: GenICam

BlackLevel

Video4Linux2

Brightness

VCD Property

VCDID_Brightness\VCDElement_Value

Automatic Exposure and Gain Control
The DMK 33UX287 camera can automatically control gain and exposure time. These
automatic functions are enabled by default.

DMK 33UX287 Technical Reference Manual18Camera Controls
In order to optimize image parameters, a region of interest can be specified for automaticfunctions. Specifying a region of interest enables fine-grained control over the image area
for which the image parameters are optimized. A selection of pre-defined area presets isavailable, but the user can also specify the coordinates of a custom rectangle.
In certain situations, it is desirable to limit the range of the auto-controlled parameters. For
example, one might want to avoid high gain settings in order to keep noise levels low.
Other applications require limiting the maximum exposure time so that movements do not
get blurred. Therefore, the ranges of the gain and exposure parameter can be limited.
If both auto exposure and auto gain are active, the camera tries to lower the gain value inorder to reduce noise and improve the image quality.

5.3.1

Auto Exposure
Parameter

Auto Exposure

Continuous

Enable Auto Exposure

True
Off

Disable Auto Exposure

False

5.3.2

USB3 Vision: GenICam

ExposureAuto

Video4Linux2

Auto Shutter

VCD Property

VCDID_Exposure\VCDElement_Auto

Auto Gain
Parameter

Auto Gain

Continuous

Enable Auto Gain

True
Off

Disable Auto Gain

False

5.3.3

USB3 Vision: GenICam

GainAuto

Video4Linux2

Auto Gain

VCD Property

VCDID_Gain\VCDElement_Auto

Auto Reference Value
The Auto Reference Value parameter specifies the target brightness for both auto exposureand auto gain.

DMK 33UX287 Technical Reference Manual19Camera Controls

5.3.4

Parameter

Auto Reference Value

Minimum

0

Maximum

255

Default128

USB3 Vision: GenICam

ExposureAutoReferenceVideo4Linux2

ExposureAutoReference

VCD Property

VCDID_Exposure\VCDElement_AutoReference

Highlight Reduction
Enabling Highlight Reduction lets the auto exposure and auto gain functions reduce
overexposed areas in the output image. This feature is particularly useful when using
10/12/16-bit output images and a tone mapping algorithm in post-processing when using
higher bit depths as the dark areas still contain a lot of useful information.

5.3.5

Parameter

Highlight Reduction

True

Try to reduce overexposed areas

False

Ignore overexposed areas and focus on matching theimage brightness to the selected Auto Reference Value.

USB3 Vision: GenICam

ExposureAutoHighlightReduction

Video4Linux2

Highlight Reduction

VCD Property

VCDID_HighlightReduction\VCDElement_Value

Auto Exposure Limits
The Auto Exposure Lower Limit parameter determines the minimum possible value that canbe set by the auto exposure algorithm.
Parameter

Auto Exposure Lower Limit

Minimum

1 µs

Maximum

1s

USB3 Vision: GenICam

ExposureAutoLowerLimit

Video4Linux2

Exposure Auto Lower Limit

The Auto Exposure Upper Limit parameter determines the maximum possible value that canbe set by the auto exposure algorithm.

DMK 33UX287 Technical Reference Manual

20Camera Controls
Parameter

Auto Exposure Upper Limit

Minimum

1 µs

Maximum

1s

USB3 Vision: GenICam

ExposureAutoUpperLimit

Video4Linux2

Exposure Auto Upper Limit

VCD Property

VCDID_Exposure\VCDElement_AutoMaxValue

If the Auto Exposure Upper Limit Auto parameter is enabled, the value of Auto Exposure
Upper Limit is automatically kept at the maximum possible value for the current frame rate.

5.3.6

Parameter

Auto Exposure Upper Limit AutoOn

Select Auto Exposure Upper Limit automaticallyOff

Let the user control Auto Exposure Upper Limit

USB3 Vision: GenICam

ExposureAutoUpperLimitAuto

Video4Linux2

Exposure Auto Upper Limit Auto

VCD Property

VCDID_Exposure\VCDElement_AutoMaxValueAuto

Auto Gain Limits
The Auto Gain Lower Limit parameter determines the minimum possible value that can be
set by the auto gain algorithm.
Parameter

Auto Gain Lower Limit

Minimum

0 dB

Maximum

48 dB

USB3 Vision: GenICam

GainAutoLowerLimit

Video4Linux2

Gain Auto Lower Limit

The Auto Gain Upper Limit parameter determines the maximum possible value that can be
set by the auto gain algorithm.
Parameter

Auto Gain Upper Limit

Minimum

0 dB

Maximum

48 dB

USB3 Vision: GenICam

GainAutoUpperLimit

Video4Linux2

Gain Auto Upper Limit

DMK 33UX287 Technical Reference Manual21Camera Controls
5.4

Trigger
The trigger mode can be used to take images at very specific points in time which are
specified by an electrical signal connected to the TRIGGER_IN pin of the I/O connector of
the camera.

5.4.1

Trigger Mode
The Trigger Mode parameter enables the trigger mode.
Parameter

Trigger ModeOn

Enable Trigger Mode

True
Off

Disable Trigger Mode

False

5.4.2

USB3 Vision: GenICam

TriggerMode

Video4Linux2

Trigger Mode

VCD Property

VCDID_Trigger\VCDElement_Value

Trigger Polarity
The Trigger Polarity parameter controls whether a trigger event is accepted on the rising or
falling edge of the signal connected to the TRIGGER_IN line.
Parameter

Trigger Polarity

RisingEdge

Accept rising edge as trigger signal

True
FallingEdge

Accept falling edge as trigger signal

False

5.4.3

USB3 Vision: GenICam

TriggerActivation

Video4Linux2

Trigger Polarity

VCD Property

VCDID_Trigger\VCDElement_Polarity

Software Trigger
The Software Trigger function can be used to simulate a trigger pulse, in turn causing one
image to be exposed and delivered to the host computer.

DMK 33UX287 Technical Reference Manual22Camera Controls

5.4.4

Parameter

Software Trigger

ExecuteSimulate one trigger pulse

USB3 Vision: GenICam

TriggerSoftware

Video4Linux2

Software Trigger

VCD Property

VCDID_Trigger\VCDElement_SoftwareTrigger

Trigger Exposure Mode
The Trigger Exposure Mode parameter sets the way in which the exposure time is controlled
in trigger mode. By default, the exposure time is controlled through the Exposure Timeparameter. The exposure time can also be controlled by the time the TRIGGER_IN line is
kept in active state.
Parameter

Trigger Exposure Mode

FrameStart

The exposure time is controlled by the Exposure Timeparameter

Timed
ExposureActive

5.4.5

Trigger Width

The exposure time is controlled by the pulse length on the
TRIGGER_IN pin

USB3 Vision: GenICam

TriggerSelector

Video4Linux2

Trigger Exposure Mode

VCD Property

VCDID_Trigger\VCDElement_TriggerExposureMode

Trigger Burst CountThe Trigger Burst Count parameter allows the camera to be configured to take more than
one image per trigger pulse. By default, this parameter is set to 1 so that exactly one imageis acquired. The images are taken as rapidly as possible given current settings (i.e. as limitedby the current exposure time and frame rate settings).
Parameter

Trigger Burst Count

Minimum

1

Maximum

65535

Default1

USB3 Vision: GenICam

AcquisitionBurstFrameCount

Video4Linux2

Trigger Burst CountVCD Property

VCDID_Trigger\VCDElement_TriggerBurstCountDMK 33UX287 Technical Reference Manual23Camera Controls
5.4.6

Trigger Source
The Trigger Source parameter allows the camera to be configured to only accept trigger
signals from a specified source, e.g. only software trigger.

5.4.7

Parameter

Trigger Source

Any

Allow trigger signals from any source

Line1

Allow only hardware trigger

Software

Allow only software trigger

USB3 Vision: GenICam

TriggerSource

Trigger Overlap
The Trigger Overlap feature gives information on when a new trigger pulse is accepted in
the trigger -> exposure -> readout sequence.

5.4.8

Parameter

Trigger Overlap

OffThe next trigger pulse is only accepted once the previous
frame has been read out from the sensor

Readout

The next trigger pulse is accepted during readout as long as
the remaining readout time is shorter than the exposuretime

USB3 Vision: GenICam

TriggerOverlap

VCD Property

VCDID_Trigger\VCDElement_TriggerOverlap

IMX Low-Latency Mode
The IMX Low-Latency Mode parameter controls whether the sensor operates in low-latency
trigger mode.
Parameter

IMX Low-Latency Mode

True

Delay between trigger input and start of exposure is exactly
as configured through the Trigger Delay feature

False

Delay between trigger input and start of exposure is thetime configured by the Trigger Delay feature in addition toa random delay depending on resolution, frame rate, andtiming relative to the sensor's internal stateUSB3 Vision: GenICam

IMXLowLatencyTriggerMode

VCD Property

VCDID_Trigger\VCDElement_IMXLowLatencyModeDMK 33UX287 Technical Reference Manual24Camera Controls
Important: If IMX Low-Latency Mode is enabled, Trigger Overlap is not allowed and isthereby forced to Off.

5.5

Trigger Timing Parameters
The 33U series camera series offers several options for dealing with bad trigger signals. By
using the Debounce Time, Denoise Time and Mask Time parameters, the camera can be
configured to ignore pulses on its TRIGGER_IN line under certain conditions.
Useful values for these parameters are application-specific. They depend on the expected
trigger frequency, the exposure time and assumptions about the input signal quality.
The default values for all these parameters is 0 µs, assuming perfect signal quality.

5.5.1

Trigger Delay
The Trigger Delay parameter specifies a time for which the camera waits between receiving
a trigger signal and starting the exposure of an image. Simulated trigger pulses generated
through the Software Trigger function are not delayed by this parameter.

5.5.2

Parameter

Trigger Delay

Minimum

0s

Maximum

1s

Default

0s

USB3 Vision: GenICam

TriggerDelay

Video4Linux2

Trigger Delay

VCD Property

VCDID_Trigger\VCDElement_TriggerDelay

Trigger Debounce TimeThe Trigger Debounce Time parameter specifies the time for which the trigger input has tobe low in order for the next trigger signal to be accepted.
Parameter

Trigger Debounce Time

Minimum

0s

Maximum

1s

Default

0s

USB3 Vision: GenICam

TriggerDebouncer

Video4Linux2

Trigger Debounce Time (us)VCD Property

VCDID_Trigger\VCDElement_TriggerDebouncer

DMK 33UX287 Technical Reference Manual25

Camera Controls
5.5.3

Trigger Mask TimeThe Trigger Mask Time parameter specifies the time for which trigger pulses are ignored
after accepting a trigger signal.

5.5.4

Parameter

Trigger Mask Time

Minimum

0s

Maximum

1s

Default

0s

USB3 Vision: GenICam

TriggerMask

Video4Linux2

Trigger Mask Time (us)VCD Property

VCDID_Trigger\VCDElement_TriggerMask

Trigger Noise Suppression TimeThe Trigger Noise Suppression Time parameter specifies the time for which trigger input has
to be active in order to be accepted as a trigger signal.

5.6

Parameter

Trigger Noise Suppression Time

Minimum

0s

Maximum

1s

Default

0s

USB3 Vision: GenICam

TriggerDenoiseVideo4Linux2

Trigger Noise Suppression Time

VCD Property

VCDID_Trigger\VCDElement_TriggerDenoise

Digital I/O
The 33U series has one digital input and one digital output. The digital input can be used asa Trigger input but the current status can also examined directly.
The digital output can be configured as a Strobe output to signal the exact moment when
the image sensor is sensitive to light so that external light sources can be synchronized toits operation cycle.

5.6.1

General Purpose Input
The General Purpose Input parameter allows the current status of the TRIGGER_IN pin.

DMK 33UX287 Technical Reference Manual26

Camera Controls
Parameter

General Purpose Input

True

TRIGGER_IN line status is low

1
False

TRIGGER_IN line status is high

0

5.6.2

USB3 Vision: GenICam

GPIn

Video4Linux2

GPIN

VCD Property

VCDID_GPIO\VCDElement_GPIORead
VCDID_GPIO\VCDElement_GPIOIn

General Purpose Output
The General Purpose Output parameter controls the status of the STROBE_OUT pin.
Parameter

General Purpose Output

True

Drive the STROBE_OUT line high

1
False

Drive the STROBE_OUT line low

0

5.7

USB3 Vision: GenICam

GPOut

Video4Linux2

GPOUT

VCD Property

VCDID_GPIO\VCDElement_GPIOWrite
VCDID_GPIO\VCDElement_GPIOOut

StrobeThe strobe function controls the automatic generation of output pulses on the
STROBE_OUT pin which is synchronized to the image sensor's exposure time.

5.7.1

Strobe Enable
The Strobe Enable parameter enables the automatic generation of strobe pulses.

DMK 33UX287 Technical Reference Manual27

Camera Controls
Parameter

Strobe Enable

On

Strobe enabled

True
Off

Strobe disabled

False

5.7.2

USB3 Vision: GenICam

StrobeEnable

Video4Linux2

Strobe Enable

VCD Property

VCDID_Strobe\VCDElement_Value

Strobe Polarity
The Strobe Polarity parameter can be used to invert the strobe pulse output.
Parameter

Strobe Polarity

ActiveHigh

The STROBE_OUT pin is logically high during the exposure
time

True
ActiveLow

5.7.3

False

The STROBE_OUT pin is logically low during the exposuretime

USB3 Vision: GenICam

StrobePolarity

Video4Linux2

Strobe Polarity

VCD Property

VCDID_Strobe\VCDElement_StrobePolarity

Strobe Operation
The Strobe Operation parameter specifies how the length of the strobe pulses arecontrolled.
Parameter

Strobe Operation

Exposure

Output pulse duration is equal to the current exposure time

True
FixedDuration

Output pulse duration is specified by Strobe Duration

False
USB3 Vision: GenICam

StrobeOperation

Video4Linux2

Strobe Exposure

VCD Property

VCDID_Strobe\VCDElement_StrobeModeDMK 33UX287 Technical Reference Manual28

Camera Controls
5.7.4

Strobe Duration
The Strobe Duration parameter controls the length of the strobe pulses if Strobe Operationis set to use the fixed duration mode.

5.7.5

Parameter

Strobe Duration

Minimum

0 µs

Maximum

32767 µs

USB3 Vision: GenICam

StrobeDuration

Video4Linux2

Strobe Duration

VCD Property

VCDID_Strobe\VCDElement_StrobeDuration

Strobe Delay
The Strobe Delay parameter can be used to add a small delay between the start of exposureand the strobe output pulse.
Parameter

Strobe Delay

Minimum

0 µs

Maximum

32767 µs

USB3 Vision: GenICam

StrobeDelay

Video4Linux2

Strobe Delay

VCD Property

VCDID_Strobe\VCDElement_StrobeDelay

5.8

Image Processing

5.8.1

Gamma
The 33U series cameras can perform gamma correction on the image data. If the pixel
format of a color camera is set a YUV mode, gamma correction is applied to the Y channel.
In bayer raw and RGB24 modes, all color channels are subject to the same gamma
correction.

DMK 33UX287 Technical Reference Manual29Camera Controls

5.8.2

Parameter

Gamma

Minimum

0.01

Maximum

5.0

Default

1.0

USB3 Vision: GenICam

Gamma

Video4Linux2

Gamma

VCD Property

VCDID_Gamma\VCDElement_Value

Lookup Table
The 33U series allows the user to specify a lookup table (LUT) that can transform pixel
values. This lookup table can be used to perform tasks like histogram equalization inside
the camera.
If the pixel format of a color camera is set to one of the YUV modes, the lookup table isapplied only to the Y channel. In bayer raw and RGB24 modes, all color channels are subject
to the same lookup operation.
The lookup table has 257 16-bit entries. The upper 8 bits of the image data are used to
select the appropriate entry in the lookup table, while the remaining bits are used tointerpolate between the selected entry and one of its neighbors.
The LUT Enable feature enables the lookup table.
Parameter

LUT Enable

True

Enable lookup table operation

False

Disable lookup table operation

USB3 Vision: GenICam

LUTEnable

The lookup table values can be programmed using the LUT Index and LUT Value features.
Parameter

LUT Index

Minimum

0

Maximum256

USB3 Vision: GenICam

LUTIndex

Parameter

LUT Value

Minimum

0

Maximum

65535

USB3 Vision: GenICam

LUTValue

DMK 33UX287 Technical Reference Manual30

Camera Controls

The whole lookup table can be quickly reprogrammed through the LUT Value All feature.
Parameter

LUT Value All

Value

1028 bytes of memory containing 257 LUT entries. Each 16bit LUT entry is aligned on a 32-bit boundary

USB3 Vision: GenICam

LUTValueAll

Important: Since gamma correction is implemented using the same hardware as the
lookup table, gamma correction is disabled when the lookup table is enabled.

5.9

Region of Interest for Auto Functions
The 33U series cameras allow for the setting of a region of interest that is used while
controlling the Auto Exposure, Auto Gain and Auto White Balance functions.

5.9.1

Auto Functions ROI Enable
The Auto Functions ROI Enable parameter allows for the use of a region of interest for autofunctions.

5.9.2

Parameter

Auto Functions ROI Enable

True

Auto functions only take a specified part of the image into
account

False

Auto functions look at the whole image

USB3 Vision: GenICam

AutoFunctionsROIEnable

Video4Linux2

Auto Functions ROI Enable

VCD Property

VCDID_AutoRoi\VCDElement_Value

Auto Functions ROI Preset
The Auto Functions ROI Preset parameter lets the user select from a list of ROI presets.

DMK 33UX287 Technical Reference Manual31Camera Controls

5.9.3

Parameter

Auto Functions ROI Preset

Full Sensor

Select the full output image

Center 50%

Select a rectangular area in the center of the output image

Center 25%

Select a small rectangular area in the center of the output
image

Bottom Half

Select the bottom half of the output image

Top Half

Select the top half of the output image

Custom Rectangle

Select a custom rectangle for fine-grained control

USB3 Vision: GenICam

AutoFunctionsROIPreset

Video4Linux2

Auto Functions ROI Preset

VCD Property

VCDID_AutoRoi\VCDElement_AutoRoiPreset

Auto Functions ROI Custom Rectangle
When Auto Functions ROI Preset is set to Custom Rectangle, the user can manually set theposition and size of the region of interest. The coordinates are relative to the origin of thecurrent video format as specified by Partial Scan Offset.
Parameter

Auto Functions ROI Left

Minimum

0

Maximum

2576

USB3 Vision: GenICam

AutoFunctionsROILeft

Video4Linux2

Auto Functions ROI Left

VCD Property

VCDID_AutoRoi\VCDElement_AutoRoiLeftRelative

Parameter

Auto Functions ROI Top

Minimum

0

Maximum2032

USB3 Vision: GenICam

AutoFunctionsROITop

Video4Linux2

Auto Functions ROI Top

VCD Property

VCDID_AutoRoi\VCDElement_AutoRoiTopRelative

DMK 33UX287 Technical Reference Manual32Camera Controls
Parameter

Auto Functions ROI Width

Minimum

16

Maximum

2592

USB3 Vision: GenICam

AutoFunctionsROIWidth

Video4Linux2

Auto Functions ROI Width

VCD Property

VCDID_AutoRoi\VCDElement_AutoRoiWidthRelative

Parameter

Auto Functions ROI Height

Minimum

16

Maximum

2048

USB3 Vision: GenICam

AutoFunctionsROIHeight

Video4Linux2

Auto Functions ROI HeightVCD Property

VCDID_AutoRoi\VCDElement_AutoRoiHeightRelative

5.10 User Sets
The 33U series cameras can store their complete configuration into built-in non-volatilememory. The camera configuration can be saved into and restored from one of two
available memory slots upon user's request. Additionally, the camera can be configured toload one of the user's camera configurations at startup.

5.10.1

User Set Selector
The User Set Selector parameter selects the memory slot on which consecutive load andsave commands are executed.

5.10.2

Parameter

User Set Selector

UserSet1

First of the two memory slots for user configurations

UserSet2

Second of the two memory slots for user configurations

Default

A special memory slot that always contains the camera's
factory default configuration. It cannot be overwritten

USB3 Vision: GenICam

UserSetSelector

Load User Set
By using the Load User Set command, the user can restore the camera configuration fromthe memory slot selected by User Set Selector.

DMK 33UX287 Technical Reference Manual33

Camera Controls

5.10.3

Parameter

Load User Set

ExecuteRestore the camera configuration from the memory slot
specified by User Set Selector

USB3 Vision: GenICam

UserSetLoad

Save User Set
By using the Save User Set command, the user can save the camera configuration into thememory slot selected by User Set Selector.

5.10.4

Parameter

Save User Set

ExecuteSave the current camera configuration into the memory slot
specified by User Set Selector

USB3 Vision: GenICam

UserSetSave

Default User Set
The Default User Set parameter controls the camera's startup behavior. It selects whichmemory slot is used for device initialization when the camera is powered up.
Parameter

Default User Set

UserSet1

Load configuration from the first memory slot

UserSet2

Load configuration from the second memory slot

Default

Load factory default configuration

USB3 Vision: GenICam

UserSetDefault

DMK 33UX287 Technical Reference Manual

34

Revision History
6

Revision History
Date

VersionDescription

2018/04/19

Initial release of this document

2018/05/23 Firmware 928

Reduce minimum exposure time from 5µs to 1µs

2023/07/19

Update environmental section in quick facts chapter

DMK 33UX287 Technical Reference Manual35

DMK 33UX287 Technical Reference ManualAll product and company names in this document may be trademarks and tradenames of their respective owners and are
hereby acknowledged.
The Imaging Source Europe GmbH cannot and does not take any responsibility or liability for any information contained inthis document. The source code presented in this document is exclusively used for didactic purposes. The Imaging Source
does not assume any kind of warranty expressed or implied, resulting from the use of the content of this document or thesource code.
The Imaging Source Company reserves the right to make changes in specifications, function or design at any time andwithout prior notice.
Last update: August 2023
© 2023 The Imaging Source
All rights reserved. Reprint, also in parts, only allowed with permission of The Imaging Source Europe GmbH.
All weights and dimensions are approximate. Unless otherwise specified, the lenses shown in the context of cameras are
not shipped with these cameras.

Headquarters:
The Imaging Source Europe GmbHÜberseetor 18, D-28217 Bremen, Germany
Phone: +49 421 33591-0
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The Imaging Source, LLC
4600 Park Road, Suite 470, Charlotte, NC 28209, United States
Phone: +1 877-462-4772
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DMK 33UX287 Technical Reference Manual36