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Field Sweeping with the SDA-5000: Considerations for Sweep in the Field

stored response during viewing. Use the up and down diamond keys to

enable the option.

• Include Audio Carriers (Transmit (OPT2) and Sweepless modes

only): This selection allows the audio carriers to be excluded, resulting

in a faster sweep. Use the up and down diamond keys to include (Yes) or

exclude (No) audio carriers.

• Sweep Insertion Level (Loopback (OPT2) mode only): This is the

level transmitted for each Loopback sweep point. The value entered here

is determined by the signal level units specified in the MEASUREMENT

configuration screen (see “Measurements Configuration” in Chapter 2,

page 25). This level is adjustable from 20 dBmV to 50 dBmV with a

stepsize of 2; the default is 20 dBmV.

• Loopback Sweep Plans (Loopback (OPT2) mode only): This

selection allows you to create and edit the Loopback Sweep Plan.

The Sweep function has four operating modes, Stealth, Transmit, Loopback,

and Sweepless. The current sweep mode is indicated in the upper right-

hand corner of the screen (see Fig. 4-10). The Stealth mode allows sweep

insertion points to be injected in vacant spectrum areas. The Loopback

mode enables you to perform a rough frequency response, gain, and loss

test on active and passive devices in the field. The Sweepless mode only

measures actual system carriers. Any system carrier can be used as a data

point, even scrambled or digital carriers. In either mode, a previously stored

response can be used as a reference to the current measurement. Sweep

references are selected in the File setup menu (see “Sweep References” in

Chapter 11, page 201). The Transmit mode operates the same as the Scan

mode with these exceptions: sweep telemetry is transmitted, sweep points

are injected, and sweep point levels are displayed (see “Scan

Measurements” in Chapter 6, page 115).

Connecting the SDA-5000 to a Test Point

This section covers signal level issues and shows you how to interface with

different network architectures.

CONSIDERATIONS FOR SWEEP IN THE FIELD

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Wavetek 147 Spezifikationen Seite 94