Terminal Overview
mA terminals (external ammeter) The terminals measure current on a 4-20 mA current
loop.
Connectors: Two banana jack plugs.
Internal fuse rating: 250 mA.
Range: Up to 22.5 mA.
Resolution: 0.1 mA.
Shunt resistor: 2.43 Ohms.
FF terminals The terminals enable FOUNDATION fieldbus
communication with the Trex unit.
Voltage measurement accuracy: +/- 3% of reading for
measurements greater than 3 volts.
FF+ pwr terminal
(Includes power supply, power
conditioning, and two terminators)
The terminal provides power to one FOUNDATION
fieldbus device in a bench setup.
Connector: One banana jack plug.
Voltage measurement accuracy: +/- 3% of reading.
Fieldbus power supply
Output:
0 mA (No device or Trex fieldbus communication)
11 mA (No device, only Trex fieldbus communication)
38 mA (38 mA for the device, no Trex fieldbus
communication)
38 mA (27 mA for the device and Trex fieldbus
communication)
Power conditioner: Included.
Terminator: Two included.
B.3 Processor, memory, operating system
specifications
Specification Value
Microprocessor 800 MHz ARM Cortex A8 / NXP
Memory 512 MB DDR3 SDRAM, 2 GB NAND Flash, 32 GB Extended Flash
Operating system Windows Embedded Compact 2013
B.4 Environmental specifications
Specification Value
Temperature limits -20°C to +55°C (-4°F to 131°F)
0% to 95% RH non condensing for 0°C to +55°C (32°F to 131°F)
For IS approval: -20°C to +50°C (-4°F to 122°F)
Charge +10°C to +45°C (50°F to 113°F)
User Guide Technical specifications
September 2021
User Guide 185
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