MUST press the “#” button following each number button, otherwise there will be no confirmation of the number pressed until you press the “#” button. If your phone has buttons labeled “A”, “B”, “C” and “D”, these buttons will correspond to 13, 14, 15 and 16 respectively. The “#” button is a 12. The “*” button is a special case and will respond with a high to low response tone. It is used to cancel a function and reset the system and to log out of secure mode. See the “DCI2 FUNCTIONALITY DESCRIPTION” section of the manual for further details. Now that we’re sure the DCI2 is decoding the tones properly lets move on to checking the output signals. This is a little tricky but hang in there.
The first thing you need to do is locate the spare red LED and 220 ohm resistor included in your kit. We’re going to build a tester with them. DCI2 Tester Construction 1. Using a pair of small pliers hold the long lead on the spare LED about ј” away from the plastic case and carefully bend the lead so it forms a right angle with the case. Be sure to bend the lead with your fingers and not the pliers. 2. Strip a little insulation from both ends of the piece of wire in your kit. 3. Make sure all the fine strands of the wire are bundled together and apply some solder to each end to hold them together. This is called tinning the wire. 4.
Solder one end of the wire to the lead you just bent on the LED and solder the other end to one lead of the spare 220 ohm resistor. 5. Locate the power LED,D9, located at the front of the circuit board to the right of the power switch, S1. The lead of D9 closest to S1 is the +5 volt power. You’re going to temporarily solder the other lead of the 220 ohm resistor to this point on the circuit board. A good way to so this is to first tin the resistor lead. Then apply a little extra solder to the connection on the circuit board. Now simply heat the connection and resistor lead together at the connection point.
Turn on the DCI2 and touch the unconnected led of the LED to terminal on the outside edge of the power connector J5. The LED should light. If it doesn’t make sure you have the LED connected properly and you the resistor is connected to the right point. The lead you are touching to the test point should be closest to the FLAT on the LED case. OK, you now have a way to test the outputs of the DCI2. Testing will involve checking each output by touching the unbent lead of the LED to the output being tested. When the output is active the LED will light. This is actually the way we test the assembled units except we have a special fixture with an LED for each output.
We didn’t think you would want to pay for the 21 LEDs and other items for the fixture. This way will work just fine. DCI2 16