Cisco Systems UBR7225VXR specifications OL-17309-02

Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend

Measuring the Downstream RF Signal

Figure 4-19 Measuring the RF Signal at the Upconverter Output in CATV Mode—Digital Channel Power Screen

Step 9 Using the spectrum analyzer’s reference level control, adjust the amplitude of the displayed signal until the signal peak is within the top graticule of the analyzer’s display grid, as shown in Figure 4-20.

Figure 4-20 Measuring the RF Signal at the Upconverter Output in CATV Mode—Adjusted Digital Channel Power Screen

Step 10 Select the video averaging feature. Your spectrum analyzer should display a signal similar to the one shown in Figure 4-21.

	Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
4-16	OL-17309-02