TV Modulator MT-41 TERRA
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Product Description
. Two-channel modulator with microprocessor control. The output channel is selected using two buttons (visible after opening the cover), and its number, as well as each parameter described below, whose value can be changed, is shown on the LED display. The channel number and the values of other parameters are stored in non-volatile memory. The use of a quartz stabilization circuit (PLL) ensures almost zero frequency error. These modulators can be cascaded together. They also allow summing the modulated signal with the terrestrial TV signal. It is possible to protect the modulator from unauthorized access. It should be noted that, compared to the previous series of modulators, Terra has implemented more variants of the PAL system.
.| Inputs: | 1 pcs. Video composite (Cinch) 1 pcs. RF (F) 2 pcs. audio (Cinch) |
| Output: | 1 pcs. RF (F) |
| Video input frequency range: | 20 Hz ... 6 MHz |
| Video input level / impedance: | 1 V ± 1 dB / 75 Ω |
| Audio input frequency range: | 20 Hz ... 15 kHz |
| Audio input level adjustment: | 1 ... -14 dB |
| Audio input level / impedance / deviation: | 775 mV RMS / 10 kΩ / 50 kHz |
| RF output level (typical) / impedance: | 90 dBµV / 75 Ω |
| RF output level adjustment: | 0 ... -20 dB |
| PAL signal version of RF output: | B/G/D/K/H/I/L/M/N/Australia |
| RF output frequency range (channels): | 470 MHz ... 862 MHz (K21-69) |
| Carrier accuracy: | ± 50 kHz |
| Audio subcarrier frequency: | 4.5 ; 5.5 ; 6.0 ; 6.5 MHz |
| Video subcarrier adjustment range: | ± 2.25 MHz max. with 0.25 MHz step |
| SAT / Terr pass attenuation: | 2.5 dB / 1.5 dB |
| SAT / Terr pass-through frequency range: | 47 MHz ... 2150 MHz |
| Video frequency response: | ± 1 dB |
| A/V ratio: | 12 / 16 dB |
| Amplitude modulation depth (typical): | 81 % |
| SNR (weighted): | ≥ 55 dB |
| Power supply: | 230 V AC @ 50Hz |
| Power consumption: | 2.5 W |
| Operating temperature: | -10 °C ... 50 °C |
| Selected functions: |
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| Weight: | 0.336 kg |
| Dimensions: | 133 x 73 x 39 mm |
| Manufacturer/Brand: | TERRA |
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