Satellite Radio User Manual

RRW1A • 18
TROUBLESHOOTING GUIDE
PROBLEM: The green Data LED does not light.
SOLUTION: 1) The LED (D1) may be installed backwards. Re-check its orien-
tation as described in the assembly steps. 2) Check pin 3 of U1 for +5V. If you
have no power here, check the wall transformer to make sure the center lug is
positive and the ring is negative for a DC supply. The polarity is not a factor if
you are using an AC transformer.
PROBLEM: The green LED doesn’t flicker off when I aim my remote at it.
SOLUTION: You are trying to relay an IR remote that is modulated at some
other frequency than 38 kHz. There is a variety of ranges available, but 38
kHz is by far the most common. Most consumer components operate at 38
kHz. This system ONLY works 38 kHz carrier signal remotes.
PROBLEM: I’m using a radio tuned to 433.42 MHz and I can’t hear the remote
control’s signal being re-broadcasted.
SOLUTION: Check to make sure your radio is set to receive AM signals and
that your receiver isn’t so narrow you are missing the signal. Tune around a bit
and you will probably find it. If not, it’s possible you made a mistake during as-
sembly of the sections surrounding Q1 and Q2. Please check your work and
make sure components are mounted flush to the board.
PROBLEM: I just can’t make the darn thing work!
SOLUTION: Call Ramsey Support at 1-585-924-4560 and look at the warranty
information at the end of this manual.
Power Supply:
• AC supply = 6 to 12 VAC or DC supply = 8 to 16 VDC @ 100 mA (+ tip)
• Current draw with a 12VDC source averages about 20 mA (RRW1A).
Dimensions
:
• PCB size: 4.0” x 4.7”
• Max component height: 7/8”
Miscellaneous
:
• Works with any standard 38 kHz carrier IR remote.
• Max effective BAUD rate: 2400 bps – standard for remotes.
• IR receiver module has an effective pick-up range of 11 meters (36 feet!).
• Max IR LED (D22 of RRW1B) wire extension length: Unknown!! Tested
over 750 feet and still going!
RRW1A SPECIFICATIONS