Configuration Of Qam Digital Signal Measurement - Promax 10 Manuel D'utilisation

USER'S MANUAL. PROMAX-10
Figure 20.- Constellation Diagram representation and
BER and MER measurement in a digital channel.
When pressing the CH-FR [10] from Q1-4 (graphical representation in four
quadrants), goes to only a quadrant e.g.: Q1, pressing again CH-FR [10] obtains an
extended representation (zooming x4) e.g.: Q1 Z. Press CH-FR [10] to return afresh to the
Q1-4 mode.
In order to change the quadrant, from Q1-4 press and keep pressed the CH-FR
[10] key until a quadrant frame selector will appear and slide it by means of the rotary
selector [9], locate it in the wished quadrant and finally loose the CH-FR [10] to set the
new quadrant for representing.
4.2.3.1.6

Configuration of QAM digital signal measurement.

From the edit channel or when pressing the CONFIG [14] in the Constellation
Diagram representation in the digital channel measurement mode, will access the page
of the configuration menu of the parameters relative to this mode, for the tuned channel.
The parameters which may be
changed and their margins are shown in the
following table. To
parameter turn the rotary selector [9] until the field is
activated (it will appear shadowed) and then press.
The value of the parameter will be activated and may
be changed by turning the rotary selector. When
the value you want appears, press the rotary
selector [9] to validate it.
DESCRIPTION
System (according to country)
QAM Modulation
Symbol Rate
Attenuation
Channel frequency Offset
(*) Remark: Including the OP-010-E option, otherwise the margin is from 1000 to 7000.
04/2004
change a given
PARAMETERS
ANNEX ITU-T
MODULATION
SYMBOL RATE
ATTN.
∆FCH
Figure 21.- Configuration of digital
signal measurement.
VALUES
A, B, C
16, 32, 64, 128, 256
(*)
1.000 to 7.200
Auto or from 0 to 60 dB.
(Steps of 10 in 10)
From - 2.00 to 2.00 MHz
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