DCI2 Output Testing Your DCI2 is configured from the factory to operate in the non-secure, latched mode for the BCD output so that will make things easy to test. If for some reason you have reconfigured the unit to operate in some other state we suggest you reset the configuration to the default state. See the “CONFIGURATION ENTRY SEQUENCES” table in the “Configuring Your DCI2” section of this manual. You will need to refer to the ”Full DTMF Configuration Signals” and “4 to 16 Line Signal Outputs” tables in the “OUTPUT SIGNAL DESCRIPTION” section to perform output testing. Make sure you have the phone line or other touch tone signal source connected to the DCI2 and the unit is turned on.
First we’ll test the 16 line outputs on J1 and then move to the BCD output on J2. 16 Line Output Testing Using the LED tester you just made hold the test lead on J1 pin 14, the Valid Data signal and touch any button on the phone. The LED should light each time a button is pressed. Now, referring to the “4 to 16 Line Signal Outputs” table, touch the LED to the signal pin on J1 for each of the decoded outputs and press the corresponding tone. The LED should light for each entry. BCD Output Testing 1. First reset the DCI2 by turning it off and back on. 2. While holding the test LED on pin 9 of J1, the Valid Data signal, press “1” and then “#”.
The LED should flash one time after the “#” is pressed. 3. Using the LED tester refer to the ”Full DTMF Configuration Signals” table test each of the 4 BCD output pins, (1, 3, 5, 7) on J1. For the number “1”/”#” sequence entry the LED should light when touched to pins 7, 5, and 3 and should not light on pin 1. 4. Now press “2” and then “#”. You should hear the confirmation tones in the phone and see the activity light flash just like you did in the initial testing steps. 5. Using the LED tester refer to the ”Full DTMF Configuration Signals” table and test each of the 4 BCD output pins, (1, 3, 5, 7).
For the number 2 button being pressed the LED should light when touched to pins 7, 5, and 1 and should not light on pin 5. 6. Repeat step 5 for each of the buttons and refer to the ”Full DTMF Configuration Signals” table. The LED should light on each pin that indicates a value of “0” in the table for pins 1, 3, 5 and 7 on J1. 7. You can now remove the 220 ohm tester resistor you soldered to the D9 connection for testing purposes. That’s it. If all the tests were successful your DCI 2 is ready to be put in it’s case and is ready for use. Proceed to the next section to finish your DCI2 kit.
If you encountered any problems please check your work over carefully for misplaced components, bad solder connections and solder bridges. If you still have problems our tech support department will be able to help you find the problem. Give us a call and we’ll be glad to help you. DCI2 17