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View of the modulator
Top view
The device has a full band of channels in the B/G raster: 1 - 12, S1 - S38, 21 - 69. A high output level of the modulator (77-92 dBuV) allows to create a pass-through connection of multiple modulators. The device has a PLL frequency stabilization.
75 ohm resistor included
The device has a full band of channels in the B/G raster: 1 - 12, S1 - S38, 21 - 69. A high output level of the modulator (77-92 dBuV) allows to create a pass-through connection of multiple modulators. The device has a PLL frequency stabilization.
| Name | MT-30A | MT-30B | MT-30C | |
| Code | R871731 | R871732 | R871733 | |
| Input parameters | Video frequency | 20 Hz - 6 MHz | ||
| Video level | 1 V +- 3 dB / 75 ohm | |||
| Audio frequency | 20 Hz - 15 kHz | |||
| Audio level | 775 mV / 600 ohm | |||
| Output parameters | level / impedance | 77 – 92 dBuV (adjustable) / 75 ohm | ||
| Channel frequency band | 1-69 (D/K) | E2-E69 (B/G) | E2-E69 | |
| Audio setting stability | +- 20 kHz | |||
| Audio | 6.5 MHz | 5.5 MHz | A2 stereo | |
| Offset | +-2.25 MHz max, at 0.25 MHz step | |||
| Through loss | <2.0 dB | |||
| Tap bandwidth | 47-862 MHz | |||
| Characteristic's flatness | +-1 dB | |||
| Audio / video spacing | 12 / 16 dB | |||
| Modulation | 75 +-10 % | |||
| Signal to noise ratio | >= 55 dB | |||
| Intermodul. products (II and III rank) spacing | > 60 dB | |||
| Side band attenuation on channel border | > 35 dB | |||
| Audio preemphasis | 50 us | |||
| Frequency deviation adjustment | -31% to +24% | +-6 dB | ||
| Video carrier deviation | <10-5 | |||
| Power parameters and consumption | 230 V / 50 Hz 5.5 VA | |||
| Voltage | 198 V to 250 V | |||
| Working temperature | -10 oC to +50 oC | |||
| External size / Weight | 180 x 87.5 x 50.5 mm / 0.65 kg | |||
Specifications
The modulator is designed for indoor use only. The installation must be made according to the EN50083-1 standard. NOTICE: The device is using ~230 V mains voltage. Such voltages can cause death.