Wavetek 3SR Spécifications télécharger pdf (Page 51)

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Level Adjustments

Press the LVL soft key to edit the scale and reference level of the

Scan display. To adjust the Scale, use the UP and DOWN arrow keys

to select a scale that will provide the best viewing of the carrier

levels. To adjust the Ref Level, press the Ref Level soft key. Now

the Ref Level can be changed by using the UP and DOWN arrow

keys or by entering a numeric value followed by the ENTER key.

The reference level is at the top of the graph.

NOTE: The reference value is limited by unit and the scale setting.

Pressing the Auto Scale soft key will automatically set the reference

level for an optimum Scan display. The FCN + Scale key can also be

used to automatically set the reference level.

Frequency Adjustments

Press the FRQ soft key to edit frequency range parameters of the

Scan display. Use the UP and DOWN arrow keys or the numeric

entry keypad to set the start frequency. Press the Stop soft key to

adjust the stop frequency. The Full Span soft key can be used to set

the start and stop frequency to the full range of the unit.

Press the TILT soft key to turn tilt compensation on or off. Tilt

channels must be programmed in the Channel Plan Edit mode,

before this function can be implemented. The tilt is based on the

levels of the highest and lowest frequency channels configured for

tilt.

When turned on, the compensation value can be adjusted using the

UP and DOWN arrow keys or by entering a numeric value followed

by the ENTER key. When tilt compensation is in effect, a "TILT

ON" indicator appears in the upper left portion of the scan screen.

Tilt Compensation

The tilt compensation feature allows the user to enter the cable loss

for a particular section of line and then using the scan display adjust

the gain of the amplifier to compensate for this loss.

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Wavetek 3SR Spécifications Page 51