Functionality
The MSK 25 has been conceived as a portable test receiver for TV, SAT
and FM radio measurements, as well as for DVB-C, DVB-S and DVB-T in
both, battery operation and mains operation. The built-in lead battery (3.4
Ah) and a wall power supply with a built-in charger, suitable for 230 VAC,
are included in delivery.
Controlling and scanning of the console and the display of frequency and
level on the LCD are carried out by a microcontroller. The receiving
frequency is indicated in MHz. Levels are measured with a peak value
detector or with an average value detector and indicated digitally in dBµV
or dBmV. Correction values are determined when the levels are
calibrated for the MSK 25 and stored in EEPROM. Thus, precise level
measurement readings can be recorded.
A bargraph display is provided to help locate transmitters. In addition, a
level-dependent acoustic signal facilitates the antenna alignment. The
display need not be observed.
The audio part with its built-in loudspeaker can process and reproduce
the various Sat and TV-NF signals complying with the B/G, D/K, I, M1
(JAPAN) and M/N standards, as well as with the FM audio signals and
the DVB-C-, DVB-T- and DVB-S signals (if the intrument provides MPEG
or DVB-T respectively). NICAM and AM sound reproduction (L standard)
is also possible.
The LNB supply voltage of 20 V /, max. 500 mA, with a graduation of 0.1
V, as well as the superimposition of 22 kHz / 60 Hz and the option to
send DiSEqC™ commands or Simple-DiSEqC™commands, cover all
currently known specifications. In DVB-T mode, you can obtain antenna
feed voltage between 5 V and 9.9 V, max. 100 mA, from the RF socket.
The built-in TFT colour screen allows the screening and evaluation of
analogue TV and SAT signals on the spot. If MPEG option is provided,
also digital signals can be displayed.
