Microchip Technology SA5 Series, User Manual

Page: 59 / 63

Evaluation Kit

2019 Microchip Technology Inc. DS50002938A-page 59
behave as outlined in Section 2.3 “Start-Up Sequence” . After several minutes, the
user should expect the “Lock Status” LED to illuminate, indicating that Atomic Lock has
been achieved, and the short-term stability performance of the MAC will behave per the
product specifications. Also, the BITE/Lock pin (J3) will flip to a logic zero once Lock is
achieved.
Settings such as turning on/off Analog Tuning, Digital Tuning, and 1PPS disciplining
can all be adjusted with terminal emulation software. See
Chapter 4. “Command Line
Interface” for appropriate syntax.
See the sections above regarding appropriate expected input/output signal levels from
the Evaluation board. The levels in Appendix D take precedence over other sections of
this User Guide that pertain to the MAC-SA5X only.
D.2.5.1 TROUBLESHOOTING
If an error should occur, the “Alarm Status” LED will illuminate. This pin is driven low
when a new alarm condition occurs and it remains low until the condition is resolved or
the user acknowledges it with the
ackalm
command. If an alarm cannot be cleared,
contact the factory for guidance.
If communication cannot be achieved, ensure the MAC is properly seated and that the
communication port settings are appropriate.
If the LEDs do not illuminate, check the power cable connector and toggle switch for
damage.
If atomic Lock cannot be achieved, check that the environmental conditions are within
product specifications and that the MAC is properly seated on the board.