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Frequency Out of Range Error
You are allowed to type in the DUT data rate for the Advanced Debug Mode tests. However, if you
enter an incorrect data strobe test signal frequency, the following error dialog box appears. For
example, if the selected DDR1 speed grade option is DDR1-400, the expected frequency of the data
strobe signal, DQS is 200MH (half of the data transfer rate). However, if the measured DQS
frequency is out by +/-10% of the expected frequency value, exception will be thrown.
Figure 71
Type in the correct data rate, within the range, as mentioned in the error message box.
DDR1 Compliance Testing Methods of Implementation
Frequency Out of Range Error
Common Error Messages
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