User's Manual

Chapter 5: GlobeSpan Control Panel Application
GlobeSpan, Inc. Proprietary – Use Pursuant to NDA
17
Development Mode
Note: The following Control Panel features are useful for OEMs’
development purposes. This section should be omitted before
releasing the manual to the end user.
1. To transition to development mode of the Control Panel:
• Position your cursor in any gray area of the “ Physical Link” tab of the Control Panel.
• Slowly right mouse click three times, followed by one left mouse click.
2. The development mode format of the “ Physical Link” tab is displayed. The Restart and
Abort buttons can be used to establish and disconnect a connection for testing purposes.
Click Cancel or OK to end the development mode session.
3. From the “ Physical Link” tab, click Advanced at the bottom right corner.
4. The “ Advanced Link Data” window offers more detailed transceiver information covering
Downstream Bit Loading, Upstream Bit Loading, SNR Margin Per Bin, Error Counters
and the Actual Configuration.
• Click Downstream Bit Loading to show the number of bits in each frequency bin for
the downstream channel. Click Close to return to the “ Advanced Link Data” window.
• Click Upstream Bit Loading to show the number of bits in each frequency bin for
the upstream channel. Click Close to return to the “ Advanced Link Data” window.
• Click SNR Margin Per Bin to display a plot of signal to noise ratio margin per bin. A
positive number roughly indicates the number of dB that the noise could increase
before the modem produces errors. Click Close to return to the “ Advanced Link
Data” window.