E5AX-BreadBoard-Model-Parts

#Pins............Spacing.........#Layers............#In Design

• ....15...............0.79............1....................1......15 pin 1 row header connector .79"
• ....14...............0.100...........1....................1
• .
• ....40...............0.100...........2....................1......Use 20 X 2 header & ribbon
• ....16...............0.100...........2....................1......Use 8 X 2 header & ribbon
• ....10...............0.100...........2....................2......Use 5 X 2 header & ribbon

Parts Locations in DigiKey

• ribbon cable header connectors

Notes:

Need qty sets=3 as a minimum so order 4 or 5 sets

Thermistor Measurements

• 0 C == 101 ohms ratio = 0.92
• room == 110 ohms ratio = 1 ( room = ~ 70 degrees )
• 100 C == 135 ohms ratio = 1.22

Ratios turn out to be exactly like Platinum RTD. See Part datasheet

• Ordered Digikey part number = PTS1206100CT-ND DataSheet PTS1206100CT-ND TEMP SENSOR RTD 100 OHM 1206
• Digikey PTS1206100CT-ND

Observations

• EPROM board appears to be identical between TEMPERATURE & PROCESS > HIGH CERTAINTY
• Interconnect board is identical in rev and in packing >HIGH CERTAINTY
• Display board is identical > HIGH CERTAINTLY
• Power supply board appears identical > Medium Certainty

Conclusions

• Signal board appears to be the source of the difference.