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Delayed Readout
Delayed readout allows images captured by a [FrameStart] trigger command to be stored
temporarily inside the camera (delayed readout buffer) and read out using a
[AcquisitionTransferStart] trigger after capture.This function is useful when executing triggers
simultaneously on multiple cameras.
Note
This function imposes a heavy processing load on the network bandwidth, as images from
multiple cameras are read out simultaneously. The number of frames that can be stored for
delayed readout depends on PixelFormat.
For details, see “Trigger Control” .
GO-5100MP-PGE
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PTP (Precision Time Protocol) Function
The camera can work as the slave for Precision Time Protocol defined in IEEE 1588. When the
IEEE 1588 master clock exists in the network where the camera is connected, this function
synchronizes the camera to the time of the master clock.
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Transport to be used
Multicast UDP datagram (224.0.1.129)
(However, Delay_Resp is a unicast UDP datagram.)
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Destination port number
319 : Sync, Delay_Req, Pdelay_Req, Pdelay_Resp
320 : Announce, Follow_Up, Delay_Resp, Pdelay_Resp, Management, Signaling
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Items for synchronization
Time synchronization is performed. Frequency tuning is not performed.
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PTP time data
80 bit (elapsed time in 1 ns, with 00:00:00, January 1 1970 set as the origin)
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Timestamp (this camera)
64 bit* (PTP synchronization: LSB64bit* of PTP time data)
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Supported PTP messages
Announce message (receive only), Sync message (receive only),
Follow_Up message (receive only), Delay_Req mesasge (send only),
Delay_Resp message (receive only)
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The Timestamp Tick Frequency register value is fixed at 1,000,000,000 (1 GHz).
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When PTP synchronization is being performed, the Timestamp Reset function is disabled.
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Because GenICam treats the timestamp (64 bit) as a 64 bit signed integer, 63 bit is actually
timestamp data without the sign bit.
Cautions