Net Media SC01 Troubleshooting Tips

There are many variables involved in Video Distribution. Cable lengths, splitter/combiners, and pre-existing signals can all impact picture
quality. In general, good results are achieved when the field strengths (dB) of each signal are balanced throughout the system. Combinations of
amplifiers, attenuators, and tilt compensators may be necessary to ensure an equalized and sufficient delivery of signal to each television. You
may wish to consult your local A/V Professional whose tools and expertise can help provide you with optimal results.
CAModulator
Channels 0 and 1 Disable CAModulator signal.
Channels 2-6 CAModulator displays test pattern.
2 = 20, 3 = 30, 4 = 40, 5 = 50, 6 = 60
Channels 7-12 CAModulator displays test pattern.
7=70,8=80,9=90,10=100,11=110, etc.
Channel 13 Not valid channel selection.
Channels 14-69 UHF Stations 14-69
Channels 70-94 CABLE Stations 70-94
Channels 95-99 Not valid channel selections.
Channels 100-125 CABLE Stations 100-125
This table covers all CAModulators, SC01, SC02, SCM1 and SCM2. Also see CAModulators Continued table.
Symptom
CAModulator does 1. The CAModulator requires proper
not work. power and signal connections.
2. Power Injector is directional; power
cannot pass through TV side.
3. Coax shielding may short circuit
power by touching center conductor.
4. Sufficient power must reach
CAModulator location. Each
CAModulator requires 12V DC, 300mA.
5. Rule out external factors such as
cable, amplifiers, splitters, and other
devices.
6. CAModulator power must be
disconnected between each channel
change.
7. Numbers on printed circuit board
represent channels. Numbers on red
dip switch block do not.
Problems with other 8. Power Injector introduces 12V DC
devices connected to power to coax cable.
coax.
Gray, hazy, fuzzy, or 9. Camera is out of focus.
blurry picture.
Difficulty inserting 10. Lens is designed to fit tightly into
Lens into Decora Decora plate. Care must be taken to
plate (In-Wall Models) prevent Decora plate from cracking.
SCXX_Troubleshoot.doc

Troubleshooting Tips

CAModulator Channels
Channel range effects SC01, SC02, SCM1 and SCM2 CAModulator function.
Description
CAModulators
Description
NetMedia, Inc. 10940 N. Stallard Place, Tucson, Arizona 85737 (520) 544-4567 Fax: (520) 544-0800
mailto:sales@netmedia.com http://www.netmedia.com
No signal should appear on TV.
Set TV to ANTENNA Tuning on UHF channels 20, 30, 40, 50, or 60.
Set TV to CABLE Tuning on CABLE channels 70, 80, 90, 100, 110, or 120.
No signal should appear on TV.
Set TV to ANTENNA Tuning on UHF channels 14-69.
Set TV to CABLE Tuning on CABLE channels 70-94.
No signal should appear on TV.
Set TV to CABLE Tuning on CABLE channels 100-125.
Recommended Action
1. Disconnect and reconnect power supply. CAModulator LED should be
on. Make sure all other connections are secure.
2. Check Power Injector direction so that MOD Arrow goes toward
CAModulator and TV Arrow goes toward television.
3. Check all coax F-connectors and replace if necessary.
4. Long cable runs will diminish power, place Power Injector closer to
CAModulator. Amplifiers and some splitter/combiners do not pass DC
power, replace them or move Power Injector so that those devices are not
between it and CAModulator. Multiple CAModulators require more power,
use a larger power supply that gives each CAModulator sufficient power.
5. Connect CAModulator to coax, coax to Power Injector, and Power
Injector directly to one TV. Set TV to channel 70, then program
CAModulator to channel 70 and look for camera picture. If TV will not tune
to channel 70, see No picture on programmed cable channel 70-94 section
of the CAModulators Continued table.
6. Review programming steps. Disconnect and reconnect power supply.
Set CAModulator for a simple channel such UHF 40 or CABLE 80.
7. See Step 6 of this table.
8. Place Power Injector so that no splitter/combiners are between it and the
CAModulator.
Use DC Blockers to prevent power from entering other devices.
9. Turn lens clockwise or counterclockwise until picture is focused.
10. Place Decora plate on flat surface. Use both hands to center lens and
press all corners down simultaneously. Repeat until all four corners are
snapped into place.
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