AXM-
A75 User’s Manual
Multifunction I/O Mezzanine Board
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The output from the PGA is input to a Texas Instruments INA159 level
translation difference amplifier that divides its input voltage by 5 and
level shifts the output by one half of the 4.096 reference voltage. The
output from the difference amplifier drives an Analog Devices AD7686
16 bit, 500 kSPS ADC. Each of the ADCs has separate clock, convert
and serial data connections to the FPGA allowing synchronous
acquisition and simultaneous data transfer.
5.0
SERVICE AND REPAIR
SERVICE AND REPAIR ASSISTANCE
Surface-Mounted Technology (SMT) boards are generally difficult to
repair. It is highly recommended that a non-functioning board be
returned to Acromag for repair. The board can be damaged unless
special SMT repair and service tools are used. Further, Acromag has
automated test equipment that thoroughly checks the performance
of each board.
Please refer to Acromag's Service Policy Bulletin or contact Acromag
for complete details on how to obtain parts and repair.
PRELIMINARY SERVICE PROCEDURE
Before beginning repair, be sure that all of the procedures in section
2.0 PREPARATION FOR USE have been followed. Replacement of a
suspected faulty unit with one that is known to work correctly is a
good technique to isolate a faulty board.
CAUTION: POWER MUST BE TURNED OFF BEFORE REMOVING OR INSERTING BOARDS
WHERE TO GET HELP
If you continue to have problems, your next step should be to visit the
Acromag worldwide web site at
. Our web
site contains the most up-to-date product and software information.
Go to the “Support” tab to access:
•
Application Notes
•
Frequently Asked Questions (FAQ’s)
•
Product Knowledge Base
•
Tutorials
•
Software Updates/Drivers
An email question can also be submitted from within the Knowledge
Base or directly from the “Contact Us” tab.