User's Manual

CHAPTER 5: Measurements

The scrollbar indicates that there are more test results. Use the down-arrow on

OMNIScanner’s keypad to scroll through the list and view results for the other six

pair combinations.

Press or to toggle between the ELFEXT results for

OMNIScanner2 and OMNIRemote.

Press (Graph) to display the ELFEXT graph for the currently

highlighted pair combination. ELFEXT is displayed for the frequency indicated by

the cursor position.

Press (Pairs) to view ELFEXT graphs for other pair combinations.

Press ESC to exit the ELFEXT screen.

5.3.7 ACR/B

ANDWIDTH

Attenuation to Crosstalk Ratio (ACR) is an indication of how much larger the

received signal is compared to the Near End Crosstalk (NEXT) on the same pair.

ACR is calculated from the measured NEXT and Attenuation. The ACR value is

computed at each measured Attenuation frequency. The worst-case ACR is

reported for each pair combination.