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The 3025 is a dual-input modulator. The 3025 will provide crisp, clear pictures from one or two video sources and the antenna or cable at four or five viewing locations within the home.
This solution is a cost effective way to distribute multiple speciality services (such as international channels) in a house or a building.
As an added benefit, the ChannelPlus model 3025 can be upgraded to provide infrared remote control of the two video sources from any TV location.
The 3025 base unit accepts the video and audio outputs from two video devices and creates two "in-house" television channels for them. Both units amplify an input from an off-air antenna or cable service. Using RG6 coax cable, the output of the 3015 can be connected to four TV receivers up to 150 feet of cable. The output of the 3025 can be connected to up to five TV receivers with two with a maximum of 35 feet of cable, and three with a maximum of 150 feet of cable.
Sufficient coaxial cable type RG6 is needed to connect each of the TVs in the home to the ChannelPlus model 3025 (RG59 can be used, but picture performance may be compromised).
If you would like to use the ChannelPlus modulator on an existing cable system: determine the highest channel number delivering a picture, excluding channels 95-99. Tune the TV up one channel at a time from the last channel with a picture until finding two non- adjacent channel numbers, each with no trace of a picture or other interference - just snow.
If you would like to use the ChannelPlus modulator over an off-air antenna setup : tune the TV one channel at a time from channel 14 through 64. Write down the channel number of each channel which has no trace of a picture or other interference - just snow.
Characteristics of the ChannelPlus 3025
| signal inputs: |
three (3) |
one (1) RF input, two (2) video inputs |
| Signal outputs: |
five (5) |
2 local, 3 distance, (with L+R audio) |
| All outputs support IR operation of remote devices when connected to a target assembly. |
| RF carriers: stability: |
± 5 kHz |
| Frequency ranges: |
CATV |
65 to 125 (excluding 95-99) |
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UHF |
14 to 64 |
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Channel width: |
6.0 MHz |
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Audio offset: |
4.5 MHz |
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Sidebands: |
double |
| RF power output: |
Modulator: |
12.0 dBmV nominal (4000µV)
15.5 dBmV max (5670µV) |
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CATV/antenna: |
6.0 dB straight gain from input |
| Video performance: |
Differential gain: |
4%, typical |
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Differential phase error: |
4 , typical |
| Signal to noise ratio: |
55 dB, typical |
| Spurious output: |
-57dBC min outside carrier ±12MHz |
| Rejection: |
50dB min isolation inside the carrier ±12MHz |
| Input signal level: |
Video: |
1.0 volt peak-to-peak into 75 |
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Audio: |
2.8 volt RMS max into 47k |
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