User's Manual

Chapter 5: GlobeSpan Control Panel Application

GlobeSpan, Inc. Proprietary – Use Pursuant to NDA

Spectrum R-MTPR Test

The Spectrum R-MTPR (MultiTone Power Ratio) Test leaves a few bins empty, thus

providing a convenient way to measure non-linear distortion in the transmitting path. The

test measures the ratio of the rms value of the full-amplitude tone in a sub-carrier to the

rms sum of all the non-tone signals in the 4.3125 kHz frequency band centered on the

sub-carrier frequency. Refer to T1.413 i2 section 9.13.2 and G.992.1 section 7.13.2 for

details regarding the Noise/Distortion floor.

7. Select the “ System Info” tab of the Control Panel to display the driver release number,

transceiver firmware release number, DSP version, remote vendor ID, remote vendor

revision, and control panel version number.

8. Select the “ ATM” tab of the Control Panel to display the current ATM statistics.

An OEM may choose to use the GlobeSpan EEPROM Interface to program the Zero

Byte, Vendor ID, Product ID, Device ID, or MAC Address when distributing the DSL

Modem. Click Advanced to access this application. You may refer to the GlobeSpan

Application Note, ” Programming the GlobeSpan EEPROM on USB Modem Reference

Boards” (AN-012), for a detailed explanation of this procedure.