The HDMI encoder modulator is used to feed audio-video signals into a coaxial cable network. To do this, you feed in a signal via the HDMI connection, e.g. from a camera, streaming box, PC or satellite receiver. HDCP encoding is supported. The VHQ00101 encodes a high-quality MPEG-4 signal from the HDMI signal and passes it on to the internal modulator. It creates a DVB-C or DVB-T television channel that most modern televisions can receive like a TV program. DVB-C or DVB-T set-top boxes and recorders with DVB tuners can also process the signal. And that in full HD picture quality up to 1080p with 60 Hz and with digital sound. You can use it to ideally feed an information channel into the home network. Such an information program is ideal for hotels, clinics, residential complexes and commercial buildings. Or feed in a single satellite TV program - any HDMI source can be used.
Feeding into the house network
You can use the same cable for distribution that is used to distribute satellite signals, DVB-T or cable television. The output channel and the program name can be freely selected. It is only important that the selected channel is not occupied by any other service. In this way you can provide signals from surveillance cameras, media players or computers over long distances and for an unlimited number of TVs.
The HDMI signal is HF modulated by the VHQ00101 and can be adjusted in detail. You can choose to output in DVB-C and DVB-T at 1080i or 1080p. MPEG1 Layer II, AAC or AC3 stereo can be selected as the audio format. Professional settings for NIDs, SID, PIDs etc. can also be made. You need this if several such devices are to be operated or you also need your own headend for TV conversion. In the private environment, such detailed settings are not necessary.
A signal input is available for smuggling into the cable network. You can use this to operate additional HDMI encoders if required and thus feed in several channels. When connecting, note that approximately the same signal levels are achieved! And please refrain from looping through the full bandwidth of a cable TV connection. The TV signal from Vodafone & Co. occupies almost all channels and would be distorted too much. We therefore recommend connecting the signals from cable television and the modulator via a crossover (eg Axing TZU 40-05) or a BK tap.
After a search on your televisions or cable/DVB-T receivers, you will receive the additional "program".
Notes on HDMI encoder modulator operation
- If you feed in signals from a cable network operator or DVB-T at the same time, please make sure that the settings do not contradict each other. In particular, choose a free output channel! If you get cable TV from a major provider like Vodafone, tuning becomes difficult without a proper meter. All channels are often occupied. Because not only television programs are delivered in the same frequency range, but also Internet data. You will not find channels occupied with data on the TV, as they could interfere with the modulator signal.
- If you are testing the modulator directly on a television set, please reduce the output level by 30 dB. There is a setting for this in the Modulator menu ("RF Attenuation": 0 = no attenuation, 30 = 30 dB attenuation at the output, i.e. still 70 dBµV). Otherwise the receiver can override.
- Dolby Digital 5.1 sound cannot be processed. Usual stereo sound must be fed in. On the output side, the modulator can generate an AC3 signal or Dolby Digital if desired, but only in stereo.
- The same settings can be made via the LAN socket as via the menu. This connection is particularly helpful if you want to configure several modulators.
Technical specifications:
- Signal input HDMI socket
- Input signal Video 480i, 576i, 576p, 720p, 1080i, 1080p (max. 60 fps)
- Input signal Audio PCM stereo
- HF output signal 100 – 950 MHz
- Output level 100 dBµV (with attenuator 0…30 dB)
- Transmission loss typ. 5 dB
- Modulation DVB-C, DVB-T
- MPEG-4 AVC H.264 encoding
- Video output format 1080i or 1080p (selectable), 1920×1080 pixels at a maximum of 60 Hz
- Audio output format MPEG 1 Layer II / AAC / AC3 stereo (selectable)
- Supported Bitrate 1-25Mbps
- MER (modulation error rate) DVB-C typ. 40 dB, DVB-T typ. 30 dB
- Power supply 12 V DC, 1 A
- Dimensions 128 x 77 x 28mm
