EUD-2016026-00 Rev.2, SmartScanIS User’s Guide for Union Pacific, 14 January 2021
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4.6.1.20 Potentiometer R180
Potentiometer
R180
adjusts the audio level (loudness) into the on-board audio amplifier that
drives the speaker inside the SmartScanIS enclosure. This factory adjustment is set for
maximum loudness with minimal distortion. Once properly adjusted, the customer uses the
volume control on the speaker to set its volume.
4.6.1.21 Potentiometer R198
Potentiometer
R198
adjusts the transmit audio level going to the radio. A misadjusted level
will be distorted or very weak sounding. This adjustment is set at the factory to FCC
specifications for 3 KHz FM deviation. Turn R198 clockwise to increase the audio level. Turn
it counterclockwise to decrease the audio level.
4.6.2 2300-100 Processor Board
The 2300-100 Processor board controls the entire SmartScanIS. All signals to and from the
external devices pass through the System Interface board on the way to their final destination,
the Processor board. Running programs written by STC, the Processor board is the brains of
the SmartScanIS.
The figure below shows a Processor board (2300-100).
Reset Button
Processor-B
(Communications Processor)
Battery
Processor-A
(Analyzer Processor)
Reset Button
Processor-B
(Communications Processor)
Battery
Processor-A
(Analyzer Processor)
Содержание SmartScanIS
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