Acquisition Buffering; Using Transfer Queue Current Block Count With Camexpert; Features That Cannot Be Changed During A Transfer - Dalsa Genie Nano Series User Manual

Acquisition Buffering

All acquisitions are internally buffered and transferred as fast as possible to the host system. This
internal buffer allows uninterrupted acquisitions no matter of any transfer delays that might occur
(such as acquisition frame rates faster that the Gigabit Ethernet link or the
Only when the internal buffer is consumed would an Image Lost Event be generated.

Using Transfer Queue Current Block Count with CamExpert

This feature returns the number of frames buffered within the Genie Nano pending transfer to the
host system. Image frames are buffered in cases where the host system is temporarily busy or
cases of high network traffic with other devices through the same Ethernet switch. By buffering
image frames, the Genie Nano will not need to drop frames when there are temporary delays to
the transfer.
When using CamExpert, right click on this field and then click on Refresh from the pop-up menu.
The current frame count in the transfer buffer is displayed in the Value field. During live grab, if the
number of frames in the transfer buffer is increasing, then there is a problem with the network or
host bandwidth being exceeded. The ImageLost event occurs when all buffer space is consumed.

Features that Cannot be Changed During a Transfer

The following features cannot be changed during an acquisition or when a transfer is connected.
Feature Group
CAMERA INFORMATION
SENSOR CONTROL
I/O CONTROL
COUNTER AND TIMER CONTROL
IMAGE FORMAT CONTROL
ACQUISITION AND TRANSFER CONTROL
EVENT CONTROL
GIGE VISION TRANSPORT LAYER CONTROL
GIGE VISION HOST CONTROL
FILE ACCESS CONTROL
68 • Operational Reference
Features Locked During a Sapera Transfer
UserSetLoad
NA
NA
NA
PixelFormat
OffsetX
OffsetY
Width
Height
Multi-ROI
DeviceRegistersStreamingStart
DeviceRegistersStreamingEnd
NA
GevSCPSPacketSize
InterPacketTimeout
InterPacketTimeoutRaw
ImageTimeout
NA
IEEE Pause frame).
Nano Series GigE Vision Camera