Wavetek 3SR Specifikace stáhnout pdf (Strana 21)

3-3

SCAN: Use the Scan mode to get a good look at absolute carrier

levels. In this mode a bar graph showing all carrier levels is

displayed.

SWEEP:

Tests frequency response of the cable system by measuring

low level signals injected by the 3ST Transmitter in vacant

spectrum areas, and monitoring cable system carrier levels

in occupied spectrum areas.

C/N: Measures the C/N ratio of the tuned channel or frequency.

HUM: Measures the hum modulation of the tuned channel in

either % or dB as selected by the operator.

MOD: Allows the user to listen to the modulation of the tuned

channel or frequency and measure Depth of Modulation of

a video carrier.

SPECT: Provides a Spectrum Analyzer display, and CSO/CTB

measurements.

3.2.3 Support Mode Selection Keys

Support modes are accessed using the Support Mode Selection keys.

There is a key for each of the three support functions. These keys

are located below the Measurement Mode Selection keys and to the

left of the Arrow keys.

File: Allows the user to access measurement and reference files.

Auto: This function provides automated FCC 24 hour testing

capabilities.

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Wavetek 3SR Specifikace Strana 21