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Voltcraft VC-940 multimeter
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This is a set of example captures of various communication channels in a
Voltcraft VC-940 multimeter:

 - Texas Instruments MSP430F149: UART
 - IR transmitter diode: UART
 - Cyrustek ES51966F: custom 3-wire protocol (SCLK, STATUS, EOC)
 - 24LC515: I²C

Details:
http://sigrok.org/wiki/Voltcraft_VC-940


Logic analyzer setup
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The logic analyzer used was a Saleae Logic16 (at 500kHz / 1MHz / 4MHz):

  Probe       Voltcraft VC-940
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  0           M430F149 UTXD1
  1           M430F149 URXD1
  2           ES51966F STATUS
  3           ES51966F SCLK
  4           ES51966F EOC
  5           TX1 (IR)
  6           24LC515 SDA
  7           24LC515 SCL
  8           24LC515 WP