Elecraft P3 High-Performance Panadapter Manual Manual de usuario descargar pdf (Pagina 15)

Programmable Functions

Most MENU functions can be assigned to any

programmable function key, FN1 to FN8. Tap or

hold the desired function key while the function is

visible on the display but not selected by tapping

the

SELECT knob. The function name then

becomes the function key label which can be seen if

labels are currently displayed. To un-assign a

function key, select MENU:FN Erase and tap or

hold the function key you wish to erase.

Some menu items are much more useful when

assigned to a function key. Examples are

Peak hold

and

Freeze display.

PEAK assigned to Function Key FN1.

Adjusting the Amplitude

Tap REF LVL to adjust the reference level, which

is the signal level that corresponds to the bottom of

the spectrum display and the low-signal level of the

waterfall display. Hold SCALE to adjust the

"vertical gain" of the display. For example if the

reference level is set to -100 dBm and the scale to

30 dB, then the top of the spectrum display is at -70

dBm and the bottom at -100 dBm.

The waterfall display is most useful if the reference

level is adjusted to place the noise level near the

bottom of the display and the scale is adjusted so

that the strongest signals of interest are near the top.

Adjusting the Frequencies Displayed

Tap SPAN to adjust the range of frequencies that

can be seen on the display at one time. The start and

stop frequencies are indicated at the top left and

right of the display. They are shown as offsets from

the center frequency in tracking mode and as the

actual RF frequencies in fixed-tune mode.

Hold CENTER to adjust the display center

frequency by turning the

SELECT knob. This

function may be disabled for tracking mode via

MENU:CenterEn.

Hold CENTER again to re-center the display on the

transceiver VFO frequency.

When used with the K3, an RF frequency is shown

at the top center of the display. In tracking mode, it

is the display center frequency, which normally is

the K3 VFO A frequency. In fixed-tune mode it is

always the K3 VFO A frequency. For transceivers

other than the K3 it is the difference between the

center frequency and the current transceiver

frequency, normally zero.

The tic marks that appear along the top and bottom

edges of the spectrum and waterfall widows

indicate RF frequency in integer multiples of 0.5, 1,

2, 5, 10 or 20 kHz, depending upon the span.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 59 60

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Elecraft P3 High-Performance Panadapter Manual Manual de usuario Pagina 15

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