FTM-350R_SM.pdf

1 Introduction This manual provides technical information necessary for ser- vicing the FTM-350R/E Dual Band FM Transceiver. Servicing this equipment requires expertise in handling sur- face-mount chip components. Attempts by non-qualified per- sons to service this equipment may result in permanent dam- age not covered by the warranty, and may be illegal in some countries. Two PCB layout diagrams are provided for each double-sided circuit board in the Transceiver. Each side of is referred to by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has only chip components, and the other has either a mixture of both chip and leaded compo- nents (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only. While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no liability for damage that may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any inconsistencies in the technical information would be appreciated. 2010 VERTEX STANDARD CO., LTD. Technical Supplement Specifications .2 Exploded View realignment should not be done until after the faulty component has been replaced. We recommend that servicing be performed only by authorized Vertex Standard service technicians who are experienced with the circuitry and fully equipped for repair and alignment. If a fault is suspected, con- tact the dealer from whom the transceiver was pur- chased for instructions regarding repair. Authorized Vertex Standard service technicians realign all cir- cuits and make complete performance checks to en- sure compliance with factory specifications after re- placing any faulty components. Those who do undertake any of the following align- ments are cautioned to proceed at their own risk. Problems caused by unauthorized attempts at re- alignment are not covered by the warranty policy. Also, Vertex Standard reserves the right to change circuits and alignment procedures in the interest of improved performance, without notifying owners. Under no circumstances should any alignment be attempted unless the normal function and operation of the transceiver are clearly understood, the cause of the malfunction has been clearly pinpointed and any faulty components replaced, and realignment determined to be absolutely necessary. Required Test Equipment The following test equipment (and familiarity with its use) is necessary for complete realignment. Cor- rection of problems caused by misalignment result- ing from use of improper test equipment is not cov- ered under the warranty policy. While most steps do not require all of the equipment listed, the inter- actions of some adjustments may require that more complex adjustments be performed afterwards. Do not attempt to perform only a single step unless it is clearly isolated electrically from all other steps. Have all test equipment ready before beginning and, follow all of the steps in a section in the order pre- sented. ? RF Signal Generator with calibrated output level at 1 GHz ? Deviation Meter (linear detector) ? In-line Wattmeter with 5% accuracy at 1 GHz ? 50-Ohm 100-W RF Dummy Load ? 4-Ohm AF Dummy Load ? Regulated DC Power Supply adjustable from 11.5 to 16 VDC, 15A ? Frequency Counter: 0.2-ppm accuracy at 1 GHz ? AF Signal Generator ? AC Voltmeter ? DC Voltmeter: high impedance ? SINAD Meter 10 Alignment Preparation alignment is not possible with an antenna. After completing one step, read the next step to see if the same test equipment is required. If not, remove the test equipment (except dummy load and wattmeter, if connected) before proceeding. Correct alignment requires that the ambient tem- perature be the same as that of the transceiver and test equipment, and that this temperature be held constant between 68 F 86 F (20 C 30 C). When the transceiver is brought into the shop from hot or cold air, it should be allowed some time to come to room temperature before alignment. Whenever pos- sible, alignments should be made with oscillator shields and circuit boards firmly affixed in place. Also, the test equipment must be thoroughly warmed up before beginning. Note: Signal levels in dB referred to in the alignment procedure are based on 0dB = 0.5V. Test Setup Set up the test equipment as shown below for trans- ceiver alignment. Maintain the supply voltage at 13.8V DC for all steps. Alignment 2.Press the keys on the front panel in the following se- quence. ? ? ? ? ? ? Entering the Alignment Mode Alignment of the FTM-350R/E is performed using a front panel software-based procedure. To perform alignment of the transceiver, it must first be placed in the “Alignment Mode,” in which the adjustments will be made and then stored into memory. To enter the Alignment mode: 1.Turn the radio on while pressing and holding the two keys which are located on both sides of the POWER switch. 3.The transceiver is now in the “Alignment Mode.” ? ? 50-ohm Dummy Load Freq. Counter Deviation Meter AC Voltmeter AF Generator AC Voltmeter Inline Wattmeter Sampling Coupler Regulated 13.8V PSU MIC Jack 11 VCO VCV Adjustment Connect the DC voltmeter to TP1302 (MAIN) and TP1301 (SUB). Referring to the table below, tune the transceiver to each frequency listed. Confirm that the correct voltage is present, or adjust the listed setting for the required voltage. MAIN Tune to:TX/RXfor 440.05 MHzRX2.6 0.25 V 440.00 MHzTX1.9 0.25 V 146.05 MHzRX1.7 0.25 V 146.00 MHzTX1.5 0.25 V SUB Tune to:TX/RXfor 440.05 MHzRX2.6 0.30 V 395.05 MHzRX1.9 0.25 V 146.05 MHzRX1.4 0.25 V 190.05 MHzRX1.4 0.25 V DC Voltmeter 1. Set the power supply voltage to 13.8 V. 2. Press the ADJ key to set the alignment Menu Item to “BAT UPBAT UPBAT UPBAT UPBAT UP”. 3. Press and hold in the FWD key for one second, to save the new setting. Alignment TP1302TP1301 TX Power Adjustment 1. Press the ADJ key to set the alignment Menu Item to “PWR xxxPWR xxxPWR xxxPWR xxxPWR xxx”. 2. Set the transceiver frequency to 440.000 MHz. 3. Press the POW key to select LOW. 4. Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the RF Power Meter reading is 5 W ( 0.5 W). 5. Press the POW key to select MID. 6. Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the RF Power Meter reading is 20 W ( 0.5 W). 7. Press the POW key to select HIGH. 8. Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the RF Power Meter reading is 50 W ( 0.5 W). 9. Set the transceiver frequency to 146.000 MHz. 10.Press the POW key to select LOW. 11.Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the RF Power Meter reading is 5 W ( 0.5 W). 12.Press the POW key to select MID. 13.Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the RF Power Meter reading is 20 W ( 0.5 W). 14.Press the POW key to select HIGH. 15.Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the RF Power Meter reading is 50 W ( 0.5 W). The following steps is USA Version only. 16.Set the transceiver frequency to 223.550 MHz. 17.Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the RF Power Meter reading is 1 W ( 0.1 W). FWD key BCK key ADJ key 12 PLL Reference Frequency 1. Set the transceiver frequency to 440.000 MHz. 2. Press the POW key to select LOW. 3. Press the ADJ key to set the alignment Menu Item “REFA xxxREFA xxxREFA xxxREFA xxxREFA xxx”. 4. Press the PTT switch to activate the transmitter, adjust the left DIAL knob, if necessary, so the counter frequency is within 100 Hz of 440.000 MHz. 5. Press and hold in the ADJ key for one second, to set the alignment Menu Item “REFB xxxREFB xxxREFB xxxREFB xxxREFB xxx”. 6. Set the transceiver frequency to 440.050 MHz. 7. Press the SET key to enter the SET mode. 8. Rotate the left DIAL knob to select Menu Item TX/ RX. 9. Press the left DIAL knob, then rotate the left DIAL knob to select B08 WIDE/NARROW AUTO. 10.Press the left DIAL knob, then rotate the left DIAL knob to select AUTO (FM). 11.Press the ESC key repeatedly, to save the new setting. 12.Connect the frequency counter fed through the 0.001F capactor to the TP1303. 13.Adjust the left DIAL knob, as needed, so that the counter frequency reading is 395.200 MHz (100 Hz). RF Front-end Tuning 1. Connect the DC voltmeter to TP1401 (MAIN) and TP1601 (SUB) on the MAIN unit, then inject a 439.050 MHz signal at a level of +10 dBV (with 1 kHz modulation 3.5 kHz deviation) from the RF signal generator. 2. Set the transceiver frequency to 439.050 MHz. 3. Press the ADJ key to set the alignment Menu Item “TUNA xxxTUNA xxxTUNA xxxTUNA xxxTUNA xxx”. 4. Adjust the left DIAL knob for maximum deflec- tion on the DC Voltmeter and then turn the dial in the opposite direction until the meter deflec- tion drops slightly lower than maximum. 5. Set the transceiver and RF signal generator fre- quency to 145.050 MHz. 6. Adjust the left DIAL knob for maximum deflec- tion on the DC Voltmeter and then turn the dial in the opposite direction until the meter deflec- tion drops slightly lower than maximum. 7. Set the RF signal generator frequency to 439.050 MHz. Alignment 8. Set the transceiver frequency to 439.050 MHz of the SUB Band. 9. Press and hold in the ADJ key to set the align- ment Menu Item “TUNB xxxTUNB xxxTUNB xxxTUNB xxxTUNB xxx”. 10.Adjust the left DIAL knob for maximum deflec- tion on the DC Voltmeter and then turn the dial in the opposite direction until the meter deflec- tion drops slightly lower than maximum. 11.Set the transceiver and RF signal generator fre- quency to 145.050 MHz. 12.Adjust the left DIAL knob for maximum deflec- tion on the DC Voltmeter and then turn the dial in the opposite direction until the meter deflec- tion drops slightly lower than maximum. Squelch Threshold Level 1. Set the RF signal generator to 440.050 MHz. Set the generator for 3.5 kHz deviation of a 1 kHz modulation tone, and set the RF output level from the signal generator to -12 dBV. 2. Set the transceiver frequency to 440.050 MHz. 3. Press the SET key to enter the SET mode. 4. Rotate the left DIAL knob to select Menu Item TX/ RX. 5. Press the left DIAL knob, then rotate the left DIAL knob to select B08 WIDE/NARROW AUTO. 6. Press the left DIAL knob, then rotate the left DIAL knob to select AUTO (FM). 7. Press the ESC key repeatedly, to save the new setting and exit the Menu mode. 8. Press the ADJ key to set the alignment Menu Item “SQLA U DSQLA U DSQLA U DSQLA U DSQLA U D”. 9. Press the BCK key to save the new setting. 10.Increase the output level of the signal generator up to -4 dBV. 11.Press the FWD key to save the new setting. 12.Set the transceiver and RF signal generator fre- quency to 146.050 MHz. 13.Increase the output level of the signal generator up to -12 dBV. 14.Press the ADJ key to set the alignment Menu Item “SQLA U DSQLA U DSQLA U DSQLA U DSQLA U D”. 15.Press the BCK key to save the new setting. 16.Increase the output level of the signal generator up to -4 dBV. 17.Press the FWD key to save the new setting. 13 18.To change the mode to WIDE FM, just repeat steps 3 through 7 above, rotating the left DIAL knob to select WIDE FM in step 6 above. 19.Set the RF signal generator to 440.050 MHz. Set the generator for 22.5 kHz deviation of a 1 kHz modulation tone, and set the RF output level from the signal generator to -1 dBV. 20.Set the transceiver frequency to 440.050 MHz. 21.Press the ADJ key to set the alignment Menu Item “SQLA U DSQLA U DSQLA U DSQLA U DSQLA U D”. 22.Press the BCK key to save the new setting. 23.Increase the output level of the signal generator up to +7 dBV. 24.Press the FWD key to save the new setting. 25.Set the transceiver and RF signal generator fre- quency to 146.050 MHz. 26.Increase the output level of the signal generator up to -1 dBV. 27.Press the ADJ key to set the alignment Menu Item “SQLA U DSQLA U DSQLA U DSQLA U DSQLA U D”. 28.Press the BCK key to save the new setting. 29.Increase the output level of the signal generator up to +7 dBV. 30.Press the FWD key to save the new setting. 31.Press and hold in the ADJ key for one second, to set the alignment Menu Item “SQLB U DSQLB U DSQLB U DSQLB U DSQLB U D”. 32.Just repeat all steps above, in SUB BAND. S-Meter Calibration 1. Set the RF signal generator to 440.050 MHz. Set the generator for 3.5 kHz (22.5 kHz for Wide FM) deviation of a 1 kHz modulation tone, and set the RF output level from the signal generator to -5 dBV. 2. Set the transceiver frequency to 440.050 MHz. 3. Press the SET key to enter the SET mode. 4. Rotate the left DIAL knob to select Menu Item TX/ RX. 5. Press the left DIAL knob, then rotate the left DIAL knob to select B08 WIDE/NARROW AUTO. 6. Press the left DIAL knob, then rotate the left DIAL knob to select AUTO (FM). 7. Press the ESC key repeatedly, to save the new setting and exit the Menu mode. 8. Press the ADJ key to set the alignment Menu Item “SMA U DSMA U DSMA U DSMA U DSMA U D”. 9. Press the BCK key to save the new setting. 10.Increase the output level of the signal generator up to +23 dBV. 11.Press the FWD key to save the new setting. 12.To change the mode to WIDE FM, just repeat steps 3 through 7 above, rotating the left DIAL knob to select WIDE FM in step 6 above. 13.Increase the output level of the signal generator up to 0 dBV. 14.Press the BCK key to save the new setting. 15.Increase the output level of the signal generator up to +23 dBV. 16.Press the FWD key to save the new setting. 17.To change the mode to FM, just repeat steps 3 through 7 above, rotating the left DIAL knob to select FM in step 6 above. 18.Set the transceiver and RF signal generator fre- quency to 146.050 MHz. 19.Increase the output level of the signal generator up to -5 dBV. 20.Press the BCK key to save the new setting. 21.Increase the output level of the signal generator up to +23 dBV. 22.Press the FWD key to save the new setting. 23.To change the mode to WIDE FM, just repeat steps 3 through 7 above, rotating the left DIAL knob to select WIDE FM in step 6 above. 24.Increase the output level of the signal generator up to 0 dBV. 25.Press the BCK key to save the new setting. Alignment 14 26.Increase the output level of the signal generator up to +23 dBV. 27.Press the FWD key to save the new setting. 28.Press and hold in the ADJ key for one second, to set the alignment Menu Item “SMB U DSMB U DSMB U DSMB U DSMB U D”. 29.Just repeat all steps above, in SUB BAND. TX Deviation 1. Inject a 1 kHz, 80 mV signal from the Audio Gen- erator. 2. Set the transceiver frequency to 440.050 MHz. 3. Press the POW key to select LOW. 4. Press the ADJ key to set the alignment Menu Item “DEV xxxDEV xxxDEV xxxDEV xxxDEV xxx”. 5. Press the PTT switch to activate the transmitter, adjust the left DIAL knob so that the Deviation Meter r