Technical information
GigE Camera and Drivers Features V3.0.0
65
GigE IR & scientific camera and driver features
This document is a master document for all Allied Vision GigE camera models and is NOT camera specific
DeviceLinkHeartbeatTimeout [Float] R/W
Controls the current heartbeat timeout of the link selected by DeviceLink-
Selector.
DeviceLinkSelector [Integer] R/W
Selects which link of the device to control.
DeviceLinkThroughputLimit [Integer] R/W
Moderates the data rate of the camera. This is particularly useful for slowing the
camera down so that it can operate over slower links such as Fast Ethernet (100-
speed), or wireless networks. It is also an important control for multi-camera
situations. When multiple cameras are connected to a single Gigabit Ethernet
port (usually through a switch), DeviceLinkThroughputLimit for each
camera needs to be set to a value so that the sum of each camera’s
DeviceLinkThroughputLimit parameter does not exceed the data rate
of the GigE port. Setting the parameter in this way will ensure that multiple
camera situations work without packet collisions, i.e. data loss.
To calculate the required minimum DeviceLinkThroughputLimit set-
ting for a camera in any image mode, use the following formula:
DeviceLinkThroughputLimit = Height x Width x FrameRate x Bytes per Pixel
115,000,000 is the typical maximum data rate for a GigE port. Beyond this set-
ting, some network cards will drop packets.
DeviceLinkThroughputLimitMode [Boolean] R/W
When On, camera automatically limits frame rate to bandwidth, determined by
DeviceLinkThroughputLimit, to prevent camera buffer overflows and
dropped frames. If Off, frame rate is not limited to bandwidth but by sensor
readout time. Latter case is useful for AcquisitionMode = Recorder or
StreamHoldEnable = On modes, as these modes are not bandwidth lim-
ited.
DeviceModelName [String] R/C
Camera model name, such as Goldeye G-032. Software should use the
DevicePartNumber to distinguish between models.
Granularity: 1000 Default: 3000000 Unit: µs
Range: [1,000,000 – 124,000,000]
Unit: Bytes/s
Note
If you are seeing occasional frames/packets reported as
StatFrameDropped/StatPacketMissed you will
likely need to decrease this parameter.
Possible values: On, Off Default: On