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RFT-801 Twin VSB stereo modulator User Manual RF-Tuote Oy, Telakkatie 25, 25570 Teijo, tel. +358-2736 6360, fax. +358-2-736 6360, [email protected], www.rf-tuote.fi 1. Purpose of use RFT-801 is designed for a modulating two video and audio signals into standard CCIR channels. RFT801 is supplied with extra video filter for unclear video source (like PC). A2 stereo, dual and multistandard mono audio functions are available. Adjacent channels (VSB modulation) from S 2 to E69 can be used. 2. Installation The connections and indications are shown in Fig 1. 1. Control switch to program channel 1 (left) or channel 2 (right). The switch must be set to middle position when programming is ready 2. Channel number ( CCIR) or TV standard. 3. Cable-TV S channel 4. The signal led shows that the unit is powered or modulator set-up is activated 5. RF OUT + DC IN in RFT-800 frame installation 6. DC IN (only in stand-alone installation) 7. DC OUT for next RFT-801 unit 8. VIDEO/AUDIO connectors 9. IR LED Fig 1. RFT-801 can be mounted either to RFT-800 frame (RFT-800 User Manual) or stand-alone. When RFT-801 is mounted for RFT-800 frame, the power voltage is supplied through active output combiner. When RFT-801 is mounted stand-alone, power supply unit must be mounted to the left side of RFT-801 due to the ventilation. DC connector is connected to left side of DC connector at the bottom of unit (6). You can loop-through DC from the right side DC connector (7) to next unit with the DC cable. Maximum 8 RFT-801 units in chain can be supplied with one power supply (RFP-804) in stand-alone installation. Audio and video are connected to VIDEO/AUDIO connectors (8). When RFT-801 is mounted for RFT-800 frame, cable to network is connected to active output combiner. When RFT-801 is mounted stand-alone, RF OUT (5) is connected to cable network via external RF combiner. RF-Tuote Oy, Telakkatie 25, 25570 Teijo, tel. +358-2736 6360, fax. +358-2-736 6360, [email protected], www.rf-tuote.fi 3. Programming The receivers and modulators are simple to program with the remote control unit (RCU). The main functions of RCU are shown in Fig 2. 1. OK 2. VOL < 3. VOL > 4. EXIT 5. SYS 6. ∧∧ 7. ∨∨ 8. CH ∧ 9. CH ∨ 10. UHF save setting fine tune output frequency fine tune output frequency cancel the selection set TV standard set output level set output level change the output channel change the output channel to activate modulator set-up Fig 2. 3.1 Power-up and first time set-up On front panel display selected output channels are displayed. To control modulator first slide front panel switch to left or right position to control modulator 1 or 2 respectively. Press UHF key on the remote. On selected output channel display a dot is lit on right lower corner. This indicates that modulator set-up is activated. Test pattern and test sound are switched on. To change output channel press up or down CH keys to scroll through available channels. Cable TV Schannels are indicated with a dot between digits. The selectable channels are S02 - S10, 5 - 12, S11 - S41 and 21 – 69 (CCIR). To change TV standard press SYS key repeatedly until required standard name I, DK (d), L, MN (nn) or BG is displayed. You can fine tune output frequency when using different channel grid than CCIR. Adjustment is done using left and right arrow keys in steps of 250 kHz. Adjustment range is +- 4 MHz. Frequency offset from the CCIR channel frequency is shown on all four digits of the unit. To adjust modulator output attenuation use double arrow keys. Audio output for BG standard can be adjusted pressing Audio key repeatedly. “Mono (nn)” is standard audio. “Stereo (St)” and “Dual (du)” use dual tone coding system to transmit two audio channels. For standards other than BG only mono can be used. NOTE! The stereo or dual audio will actually work only when front panel switch is in center position. To save modulator settings press OK key. To cancel selection, press EXIT key. Modulator set-up will be exited and test pattern and test sound will be switched off in both cases. When you are done with setting up the modulator, please slide the front panel switch to center position. This will prevent accidental changes to be made while controlling other units. RF-Tuote Oy, Telakkatie 25, 25570 Teijo, tel. +358-2736 6360, fax. +358-2-736 6360, [email protected], www.rf-tuote.fi 4. Technical specification RF Number of modulators 2 Output frequency range 112,25 MHz - 855,25 MHz Modulation AM, VSB, A2 stereo, mono Transmission standard B/G, D/K, I, L, M/N Output level 85 - 105 dBuV Spurious products < 60 dBc S/N weighted 55 dB Video Nominal input level 1,0 Vpp Input impedance 75 ohm Audio Nominal input level 0,3 Vrms Input impedance 75 ohm General AV connectors RCA-female 75 ohm Output connectors F-male 75 ohm Power consumption 16VDC/0,8A Dimensions W*H*D Mounting RFT-800 rack or stand alone 72mm*218mm*129mm This symbol on the product or on its packing means that within the European Union the product must be taken to separate collection at the product-end-of life. Do not dispose of these products as unsorted municipal waste. Fore more information about where you can drop off your waste equipment for recycling, please contact your local city office, your house disposal service or the ship where you purchased the product. RF-Tuote Oy, Telakkatie 25, 25570 Teijo, tel. +358-2736 6360, fax. +358-2-736 6360, [email protected], www.rf-tuote.fi