Download Harsh Environment Acquisition Terminal (H.E.A.T.) System

Contents
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2
3
4
5
6
7
8
A
B
............................................................................................................................ 7
System Design Guidelines ................................................................................................... 9
2.1
PCB Details .................................................................................................................. 9
2.1.1 PCB Materials ...................................................................................................... 9
2.1.2 Layout Guidelines and Recommendations ..................................................................... 9
2.2
Derating of Integrated Circuits and Passive Components ............................................................. 9
Hardware Setup ................................................................................................................. 11
3.1
Power-Up Requirements / Sequence ................................................................................... 12
3.2
ADS1278-HT Connection Options ...................................................................................... 12
3.3
Voltage Reference ......................................................................................................... 13
3.4
SM470R1B1M-HT Connection Options ................................................................................ 13
3.5
ADS1278-HT Analog Inputs .............................................................................................. 13
3.5.1 Channels 1, 2, and 3: Inclination Circuits ..................................................................... 13
3.5.2 Channel 4: Simple Amplifier Using the OPA211-HT ......................................................... 13
3.5.3 Channel 5: RTD ................................................................................................... 14
3.5.4 Channel 6: INA333-HT Instrumentation Amplifier ............................................................ 15
3.5.5 Channel 7: THS4521-HT Differential Amplifier ............................................................... 15
3.5.6 Channel 8: Discrete Differential Amplifier Circuit ............................................................. 15
Software Installation .......................................................................................................... 17
4.1
First Time Installation ..................................................................................................... 17
4.2
Upgrading Existing Installation ........................................................................................... 17
Software Application Overview ........................................................................................... 19
5.1
Connect / Disconnect ..................................................................................................... 19
5.2
Output / Stop ............................................................................................................... 19
5.3
Status Label ................................................................................................................ 20
5.4
Temperature Data ......................................................................................................... 20
5.5
Axis Data (Line Charts) ................................................................................................... 20
5.6
Four Miscellaneous A/D Channels (Not Visible on GUI) ............................................................. 20
Output File ........................................................................................................................ 21
Calibration ........................................................................................................................ 23
Firmware Code .................................................................................................................. 25
Establishing Tool Communication Via Terminal .................................................................... 35
A.1
Interpreting Data Frames ................................................................................................. 35
Hexadecimal ..................................................................................................................... 37
Overview
SLVU468 – June 2011
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