Wavetek 147 Spécifications télécharger pdf (Page 103)

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101

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

Level Screen

You can set the reference levels from the screen shown in Fig. 4-12, or you

can use the diamond keys.

Call up the level screen from the SWEEP screen (Fig. 4-10) by

pressing the soft key above the Frequency Submenu icon.

Press the soft key next to the Reference Level icon on the right

side of the display for manual reference level adjustment. Use

the up or down diamond keys, or the numeric keypad, to enter

the level, and then press Enter. Note the changes in the graph

as you adjust the values.

Press the Autoscale soft key to auto reference the level. This

automatically sets the scale to a convenient level for optimum

viewing in the center of the screen.

Press the Scale soft key to adjust the graph’s scaling. Use the

up and down diamond keys to scroll through the values

available (1, 2, 5, and 10 dB/div). Typically, this value should be

set to 2 dB/div for proper sweep displays. Notice what happens

to the display as you change the scale factor. The change takes

effect from the center of the screen.

Press the Level Submenu icon to return to the main SWEEP

screen.

Fig. 4-12 The SWEEP Level Screen

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 409 410

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Wavetek 147 Spécifications Page 103

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