Project Hydrant

PCB prototype for initial testing, Rev.H0.0

Excuse the assembly quality, or the lack of.

Calibration of the first prototype board

Used reference: HP3458B/X02 fresh after ACAL.
Signal source: Fluke 5700A
Ambient temperature: +25.8 °C

Calibration summary

Calibration point Reference signal Measurement result Error
-500.00 mV -499.988 mV -500.03 mV 84 ppm
-400.00 mV -399.991 mV -399.97 mV -52 ppm
-300.00 mV -299.997 mV -299.98 mV -56 ppm
-200.00 mV -200.000 mV -200.00 mV 0 ppm
-100.00 mV -99.9998 mV -100.01 mV 102 ppm
-50.000 mV -49.9996 mV -50.000 mV 8 ppm
Zero -3.16 µV 10 µV N/A
+1.000 mV +1.00036 mV +1.00 mV N/A
+50.000 mV +50.0000 mV +50.000 mV 0 ppm
+100.00 mV +100.000 mV +100.00 mV 0 ppm
+200.00 mV +200.000 mV +199.99 mV -50 ppm
+1.00000 V +1.00000 V +1.00000 V 0 ppm
+1.23456 V +1.23456 V +1.23457 V 8 ppm
+1.50000 V +1.50000 V +1.50000 V 0 ppm
+2.00000 V +2.49999 V +2.50002 V 12 ppm
+3.00000 V +3.00000 V +3.00004 V 13 ppm
+4.00000 V +4.00000 V +4.00006 V 15 ppm
+5.00000 V +5.00000 V +5.00010 V 20 ppm
+6.00000 V +6.00000 V +6.00014 V 23 ppm
+1.00000 V Channel 3 +1.00000 V +0.99999 V -10 ppm
+2.00000 V Channel 3 +2.00000 V +2.00000 V 0 ppm

TBD
TBD
TBD

http://ediy.com.my/index.php/blog/item/114-using-hef4094-shift-registers-with-arduino

http://www.oasistek.com/en/pro-led2.php

https://github.com/russeree/rpi_ltc2983

https://medium.com/@rxseger/interrupt-driven-i-o-on-raspberry-pi-3-with-leds-and-pushbuttons-rising-falling-edge-detection-36c14e640fef
http://raspi.tv/2013/how-to-use-interrupts-with-python-on-the-raspberry-pi-and-rpi-gpio-part-3

>>> nval = 0x7BBB67
>>> print "%X %X NTEMP -%f" % (nval, ~nval & 0x7FFFFF, float(~nval & 0x7FFFFF) / 1024)
7BBB67 44498 NTEMP -273.148438

0 0 0 1 FF DD 38 output 1FFDD38 Temperature = 4194295.305 C
0 0 0 FF EA 30 63 output FFEA3063 FAULT DATA = %X 1
0 0 0 1 FF DD A8 output 1FFDDA8 Temperature = 4194295.414 C
0 0 0 FF EA 3C 36 output FFEA3C36 FAULT DATA = %X 1
0 0 0 1 FF DC 5F output 1FFDC5F Temperature = 4194295.093 C
0 0 0 FF EA 2E C9 output FFEA2EC9 FAULT DATA = %X 1

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Author: Ilya Tsemenko
 Created: May 22, 2018, 1:21 p.m.
 Modified: May 31, 2018, 5:51 p.m.

References