Modem Test Jig ___________________________________________ Boomer-III User Manual & Integrator’s GuideCopyright Wavenet Technology © October 2003 60 BM310012WT04Initial CalibrationWithout connecting a Boomer-III OEM Modem to the Test Jig,initially check the calibration of the on-board voltage regulator. (Thisregulator supplies the RS232 converter and other on-board circuitryonly. It does not supply power to the modem).1. Connect the centre pin of the DC jack to the +3.8V powersupply with 2A capability and the external pin to the ground.2. Adjust the trim pot marked ADJ VCC to make sure the voltageon the test pin next to the ADJ VCC is 3V.3. Keep all of the switches on the dipswitch in the off position(except DIP switch 2) for normal modem operation.Fitting the Boomer-III ModemWith the power off,1. Connect the Boomer-III OEM modem to the lower FPCconnector on the test jig using a 30-way FPC cable.Use the following procedure to insert the cable into the FPCconnector.a. Lift up the lock lever of the FPC connector by flipping itup with the nail of your thumb or index finger.b. Ensure that the cable is inline with the connector andinsert the FPC cable into the connector with theconducting surface of the cable facing downwards.Lock LeverFPC conductor side
