[time-nuts] Timelab, two SR620s and losing samples
hmurray at megapathdsl.net
Sun Jan 17 16:29:33 EST 2016
magnus at rubidium.dyndns.org said:
> OK, you where thinking about the flow-control.
> You can have RS-232 wired up to do flow-control (hardware-flow-control),
> where as flow-control is a standard property of GPIB. On the other hand,
> flow-control in itself only assures the data-transfer but not that triggers
> is not missed in the overall system.
GPIB is half duplex. You have to turn the line around to tell it
give-me-the-next-sample. Talk-only avoids that.
In some sense, it's similar to flow control, but it's more likely to be
implemented in software or wait for software to tell it to send data or ...
With talk-only, the OS buffer can handle many lines in case the scheduler is
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