Acquisition And Transfer

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 PAUSE Frame Support). 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-10G 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-10G 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	Features Locked During a Sapera Transfer
Camera Information	UserSetLoad
Sensor Controls	NA
I/O Controls	NA
Counter and Timer Controls	NA
Image Format Controls	PixelFormat OffsetX (except within the Cycling Mode) OffsetY (except within the Cycling Mode) Binning (except within the Cycling Mode) Width Height Multi-ROI functions
Metadata Controls	ChunkModeActive
Acquisition and Transfer Control	DeviceRegistersStreamingStart DeviceRegistersStreamingEnd
Event Control	NA
GigE Vision Transport Layer	GevSCPSPacketSize
GigE Vision Host Control Features	InterPacketTimeout InterPacketTimeoutRaw ImageTimeout
File Access Control	NA