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5 This is a set of captures of traffic with an HP53131A counter using an
6 AR488 (Arduino bitbang GPIB adapter).
12 The logic analyzer used was a generic FX2 board (at 500kHz):
37 Send *idn? and receive instrument ident string.
38 Send 'read?', wait for acquisition and receive a measurement (10MHz frequency).
44 Set HP53131A to period measurement and talk-only mode and AR488 to
47 This setup is specifically useful for recording long logfiles of timing data
48 for use in ADEV measurements by "time-nuts":
50 http://www.ke5fx.com/timelab/readme.htm
52 Note: the regular NRFD/NDAC handshake occurring before and after the LON
53 transfer is related to the AR488 timing out non-existent transfers and may