DreamGEAR MSK 33 manual Spectral Menu, marker, span, Level measurement of analogue signals

Spectral Menu

Mark 208.75 A 52.5dBµV		BACK
70	Anzeige der Frequenz und des
	Pegels des gelbenMarkers
		zoom
60		marker
		span
50		large￿
		￿￿mark
40		￿level
		marker
30		ana. ￿
C: 203.25MHz 20MHz/Div		max
A 64.0dBµV C-M: 11.5dB		off ￿

Level measurement of analogue signals

The function spectrum can be called up in the operating modes, SAT, TV, RADIO and RETURN- PATH. The operation of this function is principally identical in all various operating modes; Differences are explained in the following text.

The set spectrum is scanned approximately every three seconds and updated on the display. A marker, which is indicated by a yellow triangle, is available for the level measurements on analogue and digital signals. Level comparison measurement can be carried out by means of the delta marker function.

the mid-frequency is always displayed by the last set channel in TV operation or the last set frequency in Sat operation.

The display shows the following values:

-Frequency of yellow marker: 208.75 MHz

-Level of yellow marker: 52.5 dBµV

-Carrier frequency 203.25 MHz

–Definition per scale unit 20 MHz

–Analogue measurement (A)

–Level of white marker: 64.0 dBµV

–Delta level: (C-M): 11.5dB

By calling up the spectrum analysis from the analogue TV or Sat menu, the ana- logue level on the white marker is measured and displayed on the screen in the lower line. The analogue measured value is identified with „A“ located in front.

Level measurement of digital signals

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￿reflv

By calling up the spectrum analysis from the digital TV or Sat menu, the digital level on the white marker is measured and displayed on the screen in the lower line. The digital measured value is indicated with a „D“ located in front.

For the establishment of digital levels, the MSK 33 calculates a correction value, which is represented by a thin line under the white marker. This value is influenced by the respective set spectrum measurement bandwidth (see below) and symbol rate.

Therefore, observe the correct setting of the symbol rate in the TV and Sat menu!

For DVB-T, the appropriate channel bandwidth (6, 7 or 8 MHz) is set in the TV menu.

With the cursor buttons ◄►, the position of the yellow marker can be determined. Frequency and level of the yellow marker is displayed.

By pressing the cursor buttons, ▲▼, the reference level can be changed in 4 dB increments ( The spectrum is moved up or down).

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