Datasheet
Table Of Contents
- XTR108EVM-USB Evaluation Board and Software Tutorial
- 1 Overview
- 2 Hardware Overview
- 3 Hardware Setup
- 3.1 Electrostatic Discharge Warning
- 3.2 Connecting the Hardware
- 3.3 Connecting Power and USB to the USB DAQ Platform
- 3.4 Connecting Loop Power Supply to the XTR108EVM-USB Interface Board
- 3.5 Connecting Outputs to a Digital Multimeter (DMM)
- 3.6 USB DAQ Platform Default Jumper Settings
- 3.7 XTR108EVM-USB Interface Board Default Jumper Settings
- 3.8 XTR108EVM-USB Sensor Board Default Jumper Settings
- 4 Software Setup
- 5 Software Overview
- 6 General Operating Tips
- 7 Hardware Documentation
- 8 Appendix
- Important Notices

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Software Overview
5.6 Tools Menu
The Tools menu, located in the menu bar in the upper-left corner of the XTR108EVM-USB software,
contains additional features useful for debugging or troubleshooting. The following sections explain the
use of each option within the Tools menu.
5.6.1 Control Bits
The Control Bits window, as shown in Figure 30, enables manual control of the signals that enable and
disable the XTR108EVM Interface Board relays. The control signals are off when the control is equal to '0'
and are on when the control is equal to '1'. The functionality of each control bit is given by Table 27.
Figure 30. GPIO Control Window
Table 27. Control Bits Functions
BIT FUNCTION NOTES
Enables current When CTRL1 is enabled, the voltage measurement and resistance measurement
CTRL1
measurement relay relays are disabled by circuit protection logic
Enables voltage When CTRL1 is enabled, the voltage measurement and resistance measurement
CTRL2
measurement relay relays are disabled by circuit protection logic
Enables resistance When CTRL1 is enabled, the voltage measurement and resistance measurement
CTRL3
measurement relay relays are disabled by circuit protection logic
Enables RTD_UNDER Enabling multiple RTD relays causes the resistances of each enabled RTD Emulator
CTRL4
relay channel to be connected in parallel
Enabling multiple RTD relays causes the resistances of each enabled RTD Emulator
CTRL5 Enables RTD_MIN relay
channel to be connected in parallel
Enabling multiple RTD relays causes the resistances of each enabled RTD Emulator
CTRL6 Enables RTD_MID relay
channel to be connected in parallel
Enabling multiple RTD relays causes the resistances of each enabled RTD Emulator
CTRL7 Enables RTD_MAX relay
channel to be connected in parallel
Enabling multiple RTD relays causes the resistances of each enabled RTD Emulator
CTRL8 Enables RTD_OVER relay
channel to be connected in parallel
45
SBOU123–March 2012 XTR108EVM-USB Evaluation Board and Software Tutorial
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