Filter
Top Products
Spectral Menu
69
Spectral Menu
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.
BACK
C: 203.25MHz 20MHz/Div
A 64.0dBµV C-M: 11.5dB
span
large
*
ȼ
mark
ù
level
30
70
50
60
40
Mark 208.75 A 52.5dBµV
zoom
marker
max
off
*
Anzeige der Frequenz und des
Pegels des gelbenMarkers
marker
ana.
*
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
Level measurement of analogue signals
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
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).
<> mark
o
reflv
<> mark
o
reflv