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Shipping (Default Configuration)
2-2
It is very important that users feel comfortable with the EVM from the
beginning. To achieve this, each unit is manufactured and shipped in a
predetermined condition. This allows the user to begin evaluation of the
system immediately and to have confidence that the EVM is working.
To confirm that the EVM is working properly, follow the steps below:
1) Apply power to the system. The green LED will illuminate.
2) Ensure stand-alone mode (SAM) LED is on.
3) Check TP7 via oscilloscope. This will be a sine wave.
4) Press the reset button SW3.
5) Press the start button SW2.
6) Check TP20 with an oscilloscope. If the system is working properly, the
signal at TP20 will also be a sine wave.
The system works as illustrated below. Any analog input supplied to the ADC
will be digitized and reconstructed by the DAC.
Figure 2–1. SAM Configuration
ADC
DAC
Control
Electronics
DSP / Micro
Interface
Data
Data
TP20
TP7
The user may probe the data and control signals to observe the signals that
allow stand-alone mode to function.
2.1 Shipping (Default Configuration)
The EVM is tested and shipped with jumpers and switches in a predetermined
arrangement. This arrangement enables users to verify at once that the EVM
is working. The tables below list switch and jumper settings that the EVM
should be set to upon receipt.