Columbia ISA
Audio – Video

 
 
Basic cable connections

Hookup Diagrams Index



Cable TV Hookup Diagrams

There are many ways to connect Cable Converter boxes, TVs, VCR and DVD recorders depending on what you want to accomplish and what resources you have available.

Cable TV Hookup 
for both VCR & DVD Recorder, RF Modulator




Coaxial Cable - RG-6



Cable TV converter/decoder box

Your service provider has cable TV decoder boxes available for older TVs with RF (antenna) type inputs. These boxes have a coax RF input for the cable coming from your provider and a coax RF output for the TV connection. Also these boxes have added an HDMI output for newer TVs. In the above image, the input and outputs are shown on the back panel of the decoder box.



Cable Out - use RG-6 coaxial cable to connect to older TV RF/antenna input port.

RF connections -
If you use the RF coaxial cables, you must tune your TV (VCR) to your set-top box’s VHF output channel (channel 3 or 4: consult your cable service-provider to find which channel it is for your location). Consult the manuals supplied with your TV and VCR for information on how to tune.




Newer TV - use an HDMI cable to connect to TV HDMI input.



RF Modulator

Connection Diagram - Cable TV to VCR to second Recorder to TV





This hookup diagram shows a VCR and a DVD Recorder connected to an older TV with only a RF input. This setup allows the recording of a cable TV channel tuned on the receiver box.

A/B switchbox


 Features:

    1. Allows recording of any channel tuned to and authorized for the receiver box.

    2. VCR is set on channel 3 (or 4) to pickup the cable box output.

    3. VCR playback is thru RF modulator to TV which is set to channel 3 (or 4).

    · 

Connection Notes:

To view cable TV channels:

    1. Select channels on the cable box.

    2. Set your DVD Recorder to LINE input to record cable channels.

To copy from VCR to DVD recorder:

    1. Connect RCA cables from VCR RCA outputs to DVD recorder RCA inputs.

    2. Play VCR and record DVD recorder from LINE input.

 

More information on PIP picture-in-picture


For an older TV without Audio/Video inputs, use an RF Modulator or an Audio/Video Switchbox.

TV TUNERS

Channels 2 to 13
Channels 14 to 69
VHF
UHF
Analog Video - Amplitude Modulation
Audio - Frequency Modulation
Betamax VCR 1977
TV set 1979
NTSC, PAL, SECAM
All the above plus channels up to 125 VHF
UHF
Analog Cable Ready - coaxial VCRs and TV sets 1980s, 1990s Cable TV
Channels 2 to 13
Channels 14 to 69
VHF
UHF
Digital compressed A/V stream - subchannels some DVD recorders, Digital TVs 2007 Digital TV
ATSC, DVB
broadcast
Physical channels
Logical channels
VHF
UHF
Digital 64-QAM, 256-QAM compressed A/V stream some DVD recorders, Digital TVs 2007-2024 Digital Cable


• With digital TV, the concept of a channel becomes more complex in that a physical 6 MHz channel can contain multiple logical channels. Logical channels can go up to 1000 and beyond depending on many factors. Todays digital cable channels generally start at 100 or 200 and above but these are logical channels and do not correspond to the actual frequencies.

• Cable TV providers can send digital signals unencrypted or encrypted. The QAM tuner can receive only unencrypted signals. For encrypted signals, a proprietary decoder box is required. Most TVs made before 2006 do not include a QAM tuner, and only have an analog cable tuner which cannot tune beyond channel 125.

• TVs and recorders generally do not have tuners for satellite TV. A proprietary decoder/receiver box is required. Satellite TV uses higher frequencies (GHz), different modulation and encryption than broadcast or cable TV.


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