Transcript
MDC408/412/416
COAX Distribution Panel Installation Guide
CSMDC4XXV1 9/04 Rev. A
Description The Coax Module provides distribution of one incoming coax signal (TV or Cable TV) to eight locations, and Satellite TV to four locations with a 12db amplifier and four auxiliary pass through ports. Please be sure to review this installation guide carefully prior to installing the module.
Features • • • • • • •
Inputs - Five including one-antenna or Cable TV and four- modulated Outputs - Eight (408), 12 (412) or 16 (416) Surge Protection Four- Pass through ports 20db bi-directional amplifier IR passing splitter and amplifier rated at 5MHz-1 GHz UL® Listed
General Standards for Cable TV service specify that the input to the TV should be within a range between 12dBmV and +19dBmV. Honeywell coax products are designed for input signals within this range, which is especially important for digital TV and cable modems. For installation where the Cable provider has provided too high a signal level a 10dB attenuator should be installed. 1. Grounding lug (ground to a good earth ground) 2. Modulated Inputs (cameras, DVD, VCR, and Satellite receiver) 3. Four pass through ports (terminate incoming sources) 4. Power input 5. Surge Protection 6. Coax Outputs 7. Cable TV or Antenna input 8. Power supply (use RG6 cable to connect power supply and amplifier) 9. Power light indicator
Installation The modules fit to one side or the other (install to the opposite side of where the AC receptacle is installed). On the underside of each Module you will notice two tabs. On the top of the module you will notice two plunger molly rivets. On the panel you will notice three columns of raised metal loops. The two outside columns are the tab retainers and accept the module tabs, while the center column is for cable management (twist ties, bands, etc.). In addition, you will notice the holes on the panel snap rail. The module installs into the QuickNetwork Panel by inserting the Module tabs into the tab retainers, and seating the plunger molly rivets into the holes on the snap rail. After the Module is seated, it is locked into place by depressing the plunger molly rivets.
Connections 1. Connect the Cable TV or Antenna is input directly into the open port on the Grounding Block located on the underside of the module (See Figure 1). 2. Modulated signals are input through one of the four Modulated Inputs (See Figure 1).
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Note:
Modulated signals should be assigned to channels that have an open channel both above and below the channel where you are modulating too.
Caution: Never connect cables between the Satellite dish (LnB) and the receivers through the coax module. DC voltage in those cables can cause damage to the module and to TVs connected to the module. 1. Connect a coax cable between the amplifier and the provided 12VDC transformer. 2. Plug the 12 VDC transformer into a standard 110VAC outlet. Note: The coax module will not operate unless power is provided (See Figure 1). Once the inputs are connected the output signals should be available for use. Outputs contain both the incoming CATV/Antenna signal and any modulated signals you have fed into the modulated inputs. Keep terminating resistors in place for all unused outputs. Notes: (1) To maintain optimal video picture a 0dB to +10dB signal should be present at the plate location within each room. A poor picture can be the result of a signal that is either too low or too high. A signal that is too high will overpower the TV tuners resulting in poor picture quality. If the service line dB range is too high installing an attenuator will reduce the signal strength to the optimal range. Attenuators, which are available in -3dB, -6dB, -10dB, -12dB, -16dB, and -20dB ratings, should be placed between the incoming service and the distribution module. An attenuator can also be placed in the individual TV location if the dB coming off the plate is too high. (2) The system’s antenna and/or cable input signal should be between +12dB to +19dB to optimize picture quality. When you are using Antenna or Cable TV and modulated signals, both signals must be varied, so that they are within 5dBmV of each other, before they enter the coax hub. For example if the cable TV signal coming from the street is +19dBmV the modulated signal going into the module should be between +14dBmV and +24dBmV. If the signals are off more than 5dBmV the higher dBmV signal can overpower the weaker dBmV signal resulting in a bad signal on both cable TV/Antenna and modulated channels.
Troubleshooting No Picture 1.
2.
Is Audio present?
Are there flashes across the screen?
If Audio is present on all channels the Cable TV or Antenna is probably working. Try feeding a signal from a VCR into the CATV input with all other inputs removed. If there is still no picture it the TV or possibly the cable between the VCR and the TV is defective. This usually means that the Cable TV signal is not present and that the tuner is endlessly searching for channels. A black or blue screen means the same thing with most tuners the screen just goes blank instead of searching. You can try feeding a signal through the system using a VCR plugged into the CATV input with all other inputs removed. If you get a picture out at the TV then your Cable TV service is down.
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3.
Are there other TV locations that are working?
4.
Are Channels 3,5,9,11 and 13 coming in?
Check the wiring behind the TV that is not working. Verify that the TV is plugged into the correct cable jack? Check that the cable is terminated properly at the jack. Check that the tuner input is set to CATV.
Poor Picture Quality “Snow” on screen
Ghosting on screen
Snow on the lower channels indicates a poor connection. Check the picture at the entry point to the house to be sure the problem isn’t in the cable system before it enters the home. Check all internal connections by removing the inputs and outputs and then reconnecting them one at a time while monitoring an output on a TV hooked directly into the output side. When the picture quality is adversely effected note the cable run and continue testing the other cables. It is possible that you could have more than one cable that is causing problems. Reconnect the cables that you have isolated and re-test. Snow on the upper channels usually means there is water in the cable. Check the incoming signal at the entry point. Snow on all channels usually indicates an amplification problem. Check to see if the power supply is plugged in and that voltage is present at the point where the power cable is inserted into the coax module. If the signal is a nearby TV station installing a filter should correct the problem. Ghosting occurs when an off-air signal is received by your television before the cable signal arrives. Ghosting presents itself as a double image of the same picture that is slightly offset. Check for loose connectors or damaged cable. Remove any equipment that may be introducing the signal such as the jumper from the VCR or video game equipment. Be sure to check the incoming signal to make sure that the ghosting is not present at the entry point. If you are feeding both antenna and CATV into the system, remove the antenna. CATV usually carries all of your local off-air channels so there is no need for the antenna.
‡CSMDC4XXV1LŠ CSMDC4XXV1 9/04 Rev. A
