Promax PROLINK-4/4C Premium Manual De Instrucciones página 138

The PROLINK-4/4C
D, K and L, adopting, apart from the characteristic parameters of the standard, the
correcting automatic system to obtain in all the cases an accurate measuring of the
input signal level. It admits any TV system (PAL, SECAM and NTSC) and allows the
user to work directly with digital TV signals decoding them, so that the television image
may be viewed, and directly measuring the power, carrier/noise ratio (C/N), the bit error
rate (BER) and the modulation error ratio (MER) of the digital signals. It is also capable
of analysing the MPEG-2 / DVB Transport Stream and identifying received Wrong
Packets. The PROLINK-4/4C
representation of the Constellation Diagram for DVB-C (QAM) as DVB-T (COFDM)
signals. Being a multistandard instrument, it can be efficiently used in any country of the
world. Its accuracy and reliability meet the needs of the most demanding users.
A powerful microprocessor automatically handles a large part of the operations
necessary to optimise the process of measurement; for example, continuous frequency
synthesis, measurement correction, the appropriate selection of the attenuators and the
automatic cut-off after the device has been inactive for a certain period of time.
The signal level measured is indicated numerically in absolute values and,
optionally, on an analogue bar shown superimposed on the monitor image, that
facilitates the detection of the maximum level. Moreover, in the LV sound mode, the
loudspeaker emits a tone whose frequency depends on the level of the signal received,
which is very useful when installing antennas. It is also possible to display on screen the
line synchronism pulse like on an oscilloscope screen.
The Spectrum Analyser mode enables all the signals on a band to be viewed on
the monitor at the same time to measure analogue channels level, C/N ratio referenced
to a noise frequency defined by the user and digital channels power using an integration
method. The bandwidth of the measuring filter can be modified to improve frequency
resolution. This is an indispensable feature, as high channel density is present on all
transmission systems today. Spectrum display can be varied between full span (the
entire band) and 8 MHz terrestrial or 4 MHz satellite. In addition, there are two markers
in order to locate and list frequencies, to read signal level and frequency difference, and
the level between both.
In the satellite band, the PROLINK-4/4C
for the analysis of the narrow band signals. Il offers two additional span levels of 8 MHz
and 4 MHz with a resolution of 50 kHz.
All functionality in spectral mode has been improved adding the possibility of
extending the graphical presentation vertically. With this aim a new function has been
introduced that allows to set a variable Dynamic Range from 10-5-2 dB/div.
The PROLINK-4/4C
signals distribution networks. The use in combination with a IF generator allows to carry
out an easy verification of the installations before the operation beginning. Also it
includes a function specially designed for the analysis of the wireless communication
networks Wi-Fi (Wireless Fidelity) that works in the ISM (Industrial Scientific and
Medical) band from 2400 to 2483.5 MHz.
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USER'S MANUAL. PROLINK-4/4C
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06/2005