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Modulator with Power Supply - MT-27P (channels 1-69 & S9-S17)
Kód zboží: R871727
Zboží je stáhnuto z nabídky
Modulator view

TV Modulator: Terra MT-27P (B/G, D/K: ch. 1-69 &S9-S17, with AC/DC adapter)
...and the view after removing the flap covering main part

TV Modulator: Terra MT-27P (B/G, D/K: ch. 1-69 &S9-S17, with AC/DC adapter)
Top view. Push-buttons "+" and "-" serve to settle output channel, with the left side pot underneath the proper deviation of sound subcarrier is set, and the right lower corner pot sets RF output level of the modulator.

Termination load and mounting screws included

Output level adjustment enables to match the level to other signals within an installation, also concerning other possible connected in series modulators.
50 kHz is the standard modulation assumed for input audio signal of 0.775 V RMS. The adjustment of deviation ensures to level the deviation when an audio signal differs from the norm. The ultimate standard deviation can be obtained within range of 0.150-0.775 V . Correct adjustment is essential for equal volume levels on individual TV channels. Switching on the power having pressed one/two of the keys on the modulator allows to set some other parameters.

During switching on the key

"-" is being pressed

During switching on the key 

"+" is being pressed

During switching on both keys "-" and "+" are being pressed
    
Possibility of setting sound subcarrier 6.5/5.5 MHzPossibility of setting video modulation factor +/- 6% with 2% stepPossibility of setting output frequency +/- 2.5 MHz with
 250 kHz step
The standard depth of video modulation is 75%, however sometimes it can be useful to change it a little, e.g. when a source generates alphanumeric characters a bit exceeding proper limit. The possibility of setting video modulation factor within +/-6% enables correction in such cases, optimizing the signal quality. In practice it is seen as no great change of brightness and contrast of the picture, e.g. of that characters. Generally, when the original and converted by the modulator picture is of regular quality (no overmodulation), and sound is clear, no correction is needed.
The standard depth of video modulation is 75%, however sometimes it can be useful to change it a little, e.g. when a source generates alphanumeric characters a bit exceeding proper limit. The possibility of setting video modulation factor within +/-6% enables correction in such cases, optimizing the signal quality. In practice it is seen as no great change of brightness and contrast of the picture, e.g. of that characters. Generally, when the original and converted by the modulator picture is of regular quality (no overmodulation), and sound is clear, no correction is needed.


Changing a little output frequency one may attempt to eliminate interferences coming from neighboring channels, when they are fixed in the system. Making offset of the output modulator's frequency there is a chance to solve that problem. The possible range is +/-2.5 MHz at 250 kHz intervals. Generally, when the signals within installation are of good quality, that feature is not used.

Code

R871727

Name

MT-27P

Inputs

 

1

Frequency range

channels

1-69 & S9-S17

 

MHz

48-862

Offset MHz

+/-2.25 with 0.25 step

Output level

dBuV

85

Sound subcarrier MHz

4.5, 5.5, 6.0, 6.5

Power

 

230V/ 50 Hz / 3VA

Working temperature

ºC

-10 to +50

Dimensions

mm

118x78x47

Weight

kg

0.33

Zboží je stáhnuto z nabídky
 
Modulator with Power Supply - MT-27P (channels 1-69 & S9-S17)
Kód zboží: R871727