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GPIB / HP 33120A
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This is an example capture of a *idn query to an HP33120A AWG using an
AR488 (Arduino bitbang GPIB adapter).


Logic analyzer setup
--------------------

The logic analyzer used was a generic FX2 board (at 500kHz):


  Probe       GPIB
  ----------------
  0           DIO1
  1           DIO2
  2           DIO3
  3           DIO4
  4           DIO5
  5           DIO6
  6           DIO7
  7           DIO8
  8           EOI
  9           DAV
  10          NRFD
  11          NDAC
  12          IFC
  13          SRQ
  14          ATN
  15          REN


Data
----

Send *idn? and receive instrument ident string.