[time-nuts] Timelab, two SR620s and losing samples

Hal Murray hmurray at megapathdsl.net
Sun Jan 17 21:29:33 UTC 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 
not cooperating.

These are my opinions.  I hate spam.

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