The
ETR accepts a generic Analog Output signal (voltage
or current) and provides variable resistance output
as a simulated potentiometer. The board performs 64
step approximation with about 1.5% output resolution.
For high output accuracy the ETR's resistive array utilizes
a number of 1% precision metal film resistors. Their
unique configuration allows for over 4 Watts power dissipation.
The ETR is equipped
with a Local Override feature that allows for manual
output control. Output status is indicated by 6 LEDs
in an easy to follow binary code. The input current
loop, the Local Override mode and the processor status
are also indicated by LEDs. As an option, the board
may be equipped with a 'fail-safe' relay that will
transfer the output to a backup controller when the
power is lost or a processor malfunction is detected.
Remote activation of this feature is also possible
by a 10 VDC signal.
The board mounts in
a 3.25" wide snap track (provided) and is equipped
with high quality angular connectors for fast and
easy wiring.
