4-1
CHAPTER 4: MEASURING SYSTEM PERFORMANCE
4.1
INTRODUCTION
Chapter 4 tells you how to evaluate system performance by
measuring key parameters, as part of either routine monitoring or
corrective maintenance. Included are: Level, Tilt, Scan, Carrier-to-
Noise ratio (C/N), Hum, Modulation-Demodulation, Composite
Second Order (CSO) and Composite Triple Beat (CTB).
4.2
ROUTINE/CORRECTIVE MEASUREMENTS
You can start these measurements through the NAV main menu or
by simply pressing the Measurement Mode keys.
•
During many of the following measurements, you will notice that
for a given procedure, the display remains essentially the same,
but the Icons that guide you through the test change from screen
to screen within the same test.
•
Press the soft key adjacent to the Icon to activate the specific
function.
•
The icon will partially darken or “gray out” to indicate change-of-
state.