Motorola Gp328 Gp338 Detailed 6804110j64 F Manual
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Keypad Board And Schematic Diagram5-54.0 Keypad Board And Schematic Diagram D601M604 M607 D604M610 M613 D603M616 M619 D606M617 M618 M620 M621D605M611 M612 M614 M615D602M605 M606 M608 M609 ZMY0130489-O R614R615 R616R617 R620 C614 R602 R603 R607 R604 R608 R605 R609 R610 R626J602 18 1 R601R631 C621 R618R649 C616 Q601 Q602Q603 R619 R648 R647 C609C622 R611 R612 R613 R625 R630 E639 E641 E643 E645 R628 E638 E640 E642 E644 E634 R627 R629 C611 C615 R622 R633 R646U602 C610 C619 C620 E637 R623R632 C617 C6182 C612 C613 J60140 39 R606R621 ZMY0130490-O Keypad Board Top and Bottom View (PCB No. 8480574Z05) To p V i e w Bottom View http://www.myradio168.name
5-6Keypad Board And Schematic Diagram R619 1KR620 1K 1K R61879U01D601 79U01D605 D604 79U01 1K R623 1K R621R622 1K 79U01D602D606 79U01 79U01D603 47K R649 PNP Q601 R628 R_W NU A0 LCD_SEL R629R627 0 NU100pFC616 R633 100K Q602 NPN 100K R646 R648 100K 3K R647 Q603 NPN R625R630 DATA CLK NU NU J602-7 J602-13 J602-15 J602-16 J602-18 J602-17 J602-2 J602-3 J602-4 J602-5 J602-6 J602-1 J602-14 J602-11 J602-10 J602-12 J602-8 J602-9 0 R626 0 R631 C614Vddd SWB+ NU RESET 100pFC622 100K R632 51pF C64451pF C642 100pFC645100pFC650 100pFC651 100pFC652 100pFC653 100pFC654 100pFC655 100pFC643 E645 E644 51pF C64051pF C63851pF C636 100pFC641 100pFC639 100pFC637 E643 E642 C634 C632 51pF 51pF 100pFC635 100pFC633 E639 E640 E641100pFC631 E638 51pF C630DATA RESET 100pFC615 C613 100pF KEYPAD_COL 100pFC612 C611 100pF KEYPAD_ROW C621 100pFC620 100pFC610 100pFE637 100pFC619 Vddd VS_INT VS_GAINSELEXT_MIC R_W LCD_SEL FLAT_TX_RTNRX_AUD_RTN TX_AUD_SND TX_AUD_RTN OPT_ENA RDY URX_SND ON INT_EXT_Vdd PTT KEY_INT OFF_BATT_DATA_OUT MISO VS_CS SWB+ VS_AUDSEL FLAT_RX_SND C617 100pFC618 NU J601-29 J601-28 J601-26 J601-2 J601-5 J601-4 J601-3 J601-40 J601-1 J601-8 J601-7 J601-6 J601-41 J601-42 J601-37 J601-35 J601-36 J601-34 J601-20 J601-32 J601-31 J601-14 J601-12 J601-30 J601-11 J601-10 J601-9 J601-44 J601-33 J601-43 J601-27 J601-25 J601-24 J601-22 J601-23 J601-21 J601-38 J601-17 J601-15 J601-16 J601-13 J601-19 J601-18 J601-39 CLK VS_RAC C647 51pFC646 100pF E634 A0 51K R601 13K R603 R602 51K KEYPAD_COLVddd KEYPAD_ROW 43K R605 130K R606 130K R610 R604 R609 43K 22K R608 22K 13K R607 ROW2 COL2 COL3ROW3 ROW4 COL5 ROW5C609 R612 560K 1MEGR613 R611 51K4 31 2 5U602 LMC7211Vddd KEY_INT VdddNU KEYPAD_COL COL2 IN4OUT11 OUT22M619 SWITCHGND3 *M616 GND3IN4 OUT11 OUT22SWITCH 7 GND3IN4 OUT11 OUT22M613 SWITCH 4 GND3IN4 OUT11 OUT22SWITCH M610 1 GND3IN4OUT11 OUT22M607 SWITCH P1 GND3IN4OUT11 OUT22SWITCH M608 P2 4OUT11 OUT22M611 SWITCHGND3IN 2 GND3IN4OUT11 OUT22SWITCH M614 5 GND3IN4OUT11 OUT22M617 SWITCH 8M620 GND3IN4OUT11 OUT22SWITCH COL3 0 OUT22SWITCHM621GND3IN4OUT11 ROW5 #M618 GND3IN4OUT11 OUT22SWITCH ROW4 9 GND3IN4OUT11 OUT22M615 SWITCH ROW3 6 1 OUT22M612GND3IN4OUT1 SWITCH ROW2 3 GND3IN4OUT11 OUT22M609 SWITCH KEYPAD_ROW P3 OUT22SWITCH M606GND3IN4OUT11 ROW5 + GND3IN4OUT11 OUT22M605 SWITCH ROW4 0 R614 0 GND3IN4OUT11OUT22 R617SWITCH M604 R615 R616 OFF_BATT_DATA_OUT ROW3 COL5ON - NU NU EXT_MIC VS_CS SW_B+ Vddd VS_AUDSEL Det_Aud_Snd Rx_Aud_Rtn Tx_Aud_Snd Tx_Aud_Rtn Flat_Tx_Rtn Opt_Bd_En Rdy/Req Rx_Aud_Snd ON INT_EXT_Vdd Key_Row Key_Col PTT Key_Intrp VS_INT RST* LED_EN OFF_BATT_DATA_OUT VS_GAINSEL SrD_Rtn SrD_Snd R/W* CS* DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 A0 SCK_Snd VS_RAC Gnd Gnd Gnd Gnd Gnd 40 PIN CONNECTOR MOSI SCK D0 D1 D2 D3 D4 D5 D6 D7 A0 R/W* RST* CS* LED_EN Gnd Vdd SW_B+ J602 18 PIN CONNECTOR ZMY0130090-B Keypad Board Schematic Diagram http://www.myradio168.name
6A-1Section 6A MODEL CHART AND TEST SPECIFICATIONS (403-470 MHZ)1.0 Model ChartGP Series, UHF, 403-470 MHzModel DescriptionAZH25RDC9AA2GP328403-470MHz4W4CHAZH25RDC9AA3 GP328 403-470 MHz 4WAZH25RDH9AA6GP338 403-470 MHz 4WItem DescriptionX PMUE1563_ GP328 Super Tanapa 403-470 MHz 4W 4CHXPMUE1434_GP328 Super Tanapa 403-470 MHz 4W X PMUE1407_ GP338 Super Tanapa 403-470 MHz 4WXPMUE1565_GP328 Tanapa 403-470 MHz 4W 4CH X PMUE1448_ GP328 Tanapa 403-470 MHz 4WXPMUE1406_GP338 Tanapa 403-470 MHz 4W X PMLE4171_ GP328 B/C Kit 403-470 MHz 4W 4CHXPMLE4130_GP328 B/C Kit 403-470 MHz 4W X PMLE4109_ GP338 B/C Kit 403-470 MHz 4WXPMLN4348_GP328 Front Housing Kit 4CH X PMLN4216_ GP328 Front Housing KitXPMLN4199_GP338 Front Housing Kit XXXNAE6483_ UHF16cmMonopole(Whip)antenna(403-520MHz)XXXPMAE4002_UHF 9 cm antenna (403-433 MHz) XXXPMAE4003_ UHF9cmantenna(430-470MHz)XX6804110J54GP328 User Guide X 6804110J55 GP338 User Guide x = Indicates one of each is required.
6A-2Model ChartGP Series, UHF, 403-470 MHzModel DescriptionAZH25RDC9AA3 with option AZQ203AEGP328 403-470 MHz 4W (w/o keypad, camouflage)AZH25RDC9AA3 with option AZH64AHGP328 403-470 MHz 4W (w/o keypad, yellow)AZH25RDH9AA6 with option AZQ203AGGP338 403-470 MHz 4W (keypad, camouflage)AZH25RDH9AA6 with option AZH64AJGP338 403-470 MHz 4W (keypad, yellow)Item DescriptionXPMUE1923_GP328 Super Tanapa 403-470 MHz 4W X PMUE1919_ GP328 Super Tanapa 403-470 MHz 4WXPMUE1927_GP338 Super Tanapa 403-470 MHz 4W X PMUE1921_ GP338 Super Tanapa 403-470 MHz 4WXPMUE1924_GP328 Tanapa 403-470 MHz 4W X PMUE1920_ GP328 Tanapa 403-470 MHz 4WXPMUE1928_GP338 Tanapa 403-470 MHz 4W X PMUE1922_ GP338 Tanapa 403-470 MHz 4WXXPMLE4130_GP328 B/C Kit 403-470 MHz 4W X X PMLE4109_ GP338 B/C Kit 403-470 MHz 4WXPMLN4539_GP328 Front Housing Kit X PMLN4544_ GP328 Front Housing KitXPMLN4538_GP338 Front Housing Kit X PMLN4545_ GP338 Front Housing KitXXXXNAE6483_UHF 16 cm Monopole (Whip) antenna (403-520 MHz) XXXXPMAE4002_ UHF9cmantenna(403-433MHz)XXXXPMAE4003_UHF 9 cm antenna (430-470 MHz) X X 6804110J54 GP328 User GuideXX6804110J55GP338 User Guide x = Indicates one of each is required.
Specifications6A-32.0 SpecificationsGeneralTransmitter ReceiverAll specifications are subject to change without notice.UHFFrequency:403-470 MHz Channel Capacity: GP328 : 4/16 Channels GP338 : 128 ChannelsPower Supply:7.5 Volts±20% Dimensions with Standard High Capacity NiMH Battery: with Ultra High Capacity NiMH Bat- tery:137mm x 57.5mm x 37.5mm 137mm x 57.5mm x 40mmWeight: with Standard High Capacity NiMH Battery: with Ultra High Capacity NiMH Bat- tery:420 g 500 g Average Battery Life @ (5-5-90 Duty Cycle) Standard High Capacity NiMH Bat- tery: Ultra High Capac- ity NiMH Battery:Low Pow- er >11 hrs >14 hrsHigh Pow- er >8 hrs >11 hrsSealing:Passes rain testing per IP54 Shock: Meets MIL-STD-810- C,D & E and TIA/EIA 603Vibration:Meets MIL-STD-810- C,D & E and TIA/EIA 603 Dust: Meets MIL-STD-810- C,D & E and IP54Humidity:Meets MIL-STD-810- C,D & E and TIA/EIA 603 FCC ID AZ489FT4826UHFRF Output NiMH @ 7.5V:Low 1WHigh 4W Frequency 403-470 MHzChannel Spacing12.5/20/25 kHz Freq. Stability (-30°Cto+60°C)0.00025%Spurs/Harmonics:-36 dBm < 1 GHz -30 dBm > 1 GHz Audio Response: (from 6 dB/oct. Pre- Emphasis, 300 to 3000Hz)+1, -3 dBAudio Distortion: @ 1000 Hz, 60% Rated Max. Dev.
6A-4Transmitter3.0 Transmitter3.1 General(Refer to Figure 6-1) The UHF transmitter contains five basic circuits: 1.power amplifier 2.antenna switch 3.harmonic filter 4.antenna matching network 5.power control integrated circuit (PCIC).3.1.1 Power AmplifierThe power amplifier consists of two devices: 1.9Z67 LDMOS driver IC (U101) and 2.PRF1507 LDMOS PA (Q110). The 9Z67 LDMOS driver IC contains a 2 stage amplification with a supply voltage of 7.3V. This RF power amplifier is capable of supplying an output power of 0.3W (pin 6 and 7) with an input signal of 2mW (3dBm) (pin16). The current drain would typically be 160mA while operating in the frequency range of 403-470MHz. The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of 0.3W. The current drain would typically be 1300mA while operating in the frequency range of 403- 470MHz. The power output can be varied by changing the biasing voltage.Figure 6-1: Transmitter Block DiagramPCIC Antenna PA DriverVcontrolVcontrolFrom VCOJackPA - F i n a l StageAntenna Switch/ Harmonic Filter/ Matching Network
Transmitter6A-53.1.2 Antenna SwitchThe antenna switch circuit consists of two PIN diodes (CR101 and CR102), a pi network (C107, L104 and C106), and two current limiting resistors (R101, R170). In the transmit mode, B+ at PCIC (U102) pin 23 will go low and turn on Q111 where a B+ bias is applied to the antenna switch circuit to bias the diodes on. The shunt diode (CR102) shorts out the receiver port, and the pi network, which operates as a quarter wave transmission line, transforms the low impedance of the shunt diode to a high impedance at the input of the harmonic filter. In the receive mode, the diodes are both off, and hence, there exists a low attenuation path between the antenna and receiver ports.3.1.3 Harmonic FilterThe harmonic filter consists of C104, L102, C103, L101 and C102. The design of the harmonic filter for UHF is that of a modified Zolotarev design. It has been optimized for efficiency of the power module. This type of filter has the advantage that it can give a greater attenuation in the stop-band for a given ripple level. The harmonic filter insertion loss is typically less than 1.2dB.3.1.4 Antenna Matching NetworkA matching network which is made up of L116 is used to match the antennas impedance to the harmonic filter. This will optimize the performance of the transmitter and receiver into an antenna.3.1.5 Power Control Integrated Circuit (PCIC)The transmitter uses the Power Control IC (PCIC), U102 to regulate the power output of the radio. The current to the final stage of the power module is supplied through R101, which provides a voltage proportional to the current drain. This voltage is then fedback to the Automatic Level Control (ALC) within the PCIC to regulate the output power of the transmitter. The PCIC has internal digital to analog converters (DACs) which provide the reference voltage of the control loop. The reference voltage level is programmable through the SPI line of the PCIC. There are resistors and integrators within the PCIC, and external capacitors (C133, C134 and C135) in controlling the transmitter rising and falling time. These are necessary in reducing the power splatter into adjacent channels. CR105 and its associated components are part of the temperature cut back circuitry. It senses the printed circuit board temperature around the transmitter circuits and output a DC voltage to the PCIC. If the DC voltage produced exceeds the set threshold in the PCIC, the transmitter output power will be reduced so as to reduce the transmitter temperature.
6A-6Receiver4.0 Receiver4.1 Receiver Front-End(Refer toUHF Receiver Front End Schematic Diagramon page 6A-18 andUHF Transmitter Schematic Diagramon page 6A-22) The RF signal is received by the antenna and applied to a low-pass filter. For UHF, the filter consists of L101, L102, C102, C103, C104. The filtered RF signal is passed through the antenna switch. The antenna switch circuit consists of two PIN diodes(CR101 and CR102) and a pi network (C106, L104 and C107).The signal is then applied to a varactor tuned bandpass filter. The UHF bandpass filter comprises of L301, L302, C302, C303, C304, CR301 and CR302. The bandpass filter is tuned by applying a control voltage to the varactor diodes(CR301 and CR302) in the filter. The bandpass filter is electronically tuned by the DACRx from IC404 which is controlled by the microprocessor. Depending on the carrier frequency, the DACRx will supply the tuned voltage to the varactor diodes in the filter. Wideband operation of the filter is achieved by shifting the bandpass filter across the band. The output of the bandpass filter is coupled to the RF amplifier transistor Q301 via C307. After being amplified by the RF amplifier, the RF signal is further filtered by a second varactor tuned bandpass filter, consisting of L306, L307, C313, C317, CR304 and CR305. Both the pre and post-RF amplifier varactor tuned filters have similar responses. The 3 dB bandwidth of the filter is about 50 MHz. This enables the filters to be electronically controlled by using a single control voltage which is DACRx .Figure 6-2: UHF Receiver Block DiagramDemodulator SynthesizerCrystal Filter Mixer Va r a c t o r Tuned Filter RF Amp Va r a c t o r Tuned Filter Pin Diode Antenna Switch RF Jack Antenna AGC Control Voltage from ASFICFirst LO from FGU Recovered Audio Squelch RSSI IFIC SPI Bus 16.8 MHz Reference Clock Second LO VCO U301IF Amp
Receiver6A-7The output of the post-RF amplifier filter which is connected to the passive double balanced mixer consists of T301, T302 and CR306. Matching of the filter to the mixer is provided by C381. After mixing with the first LO signal from the voltage controlled oscillator (VCO) using low side injection, the RF signal is down-converted to the 45.1 MHz IF signal. The IF signal coming out of the mixer is transfered to the crystal filter (FL301) through a resistor pad and a diplexer (C322 and L310). Matching to the input of the crystal filter is provided by C324 and L311. The crystal filter provides the necessary selectivity and intermodulation protection.4.2 Receiver Back-End(Refer toUHF Receiver Back End Schematic Diagramon page 6A-19) The output of crystal filter FL301 is matched to the input of IF amplifier transistor Q302 by components R352 and C325. Voltage supply to the IF amplifier is taken from the receive 5 volts (R5). The IF amplifer provides a gain of about 7dB. The amplified IF signal is then coupled into U301(pin 3) via C330, C338 and L330 which provides the matching for the IF amplifier and U301. The IF signal applied to pin 3 of U301 is amplified, down-converted, filtered, and demodulated, to produce the recovered audio at pin 27 of U301. This IF IC is electronically programmable, and the amount of filtering (which is dependent on the radio channel spacing) is controlled by the microprocessor. Additional filtering, once externally provided by the conventional ceramic filters, is replaced by internal filters in the IF module (U301). The IF IC uses a type of direct conversion process, whereby the externally generated second LO frequency is divided by two in U301 so that it is very close to the first IF frequency. The IF IC (U301) synthesizes the second LO and phase-locks the VCO to track the first IF frequency. The second LO is designed to oscillate at twice the first IF frequency because of the divide-by-two function in the IF IC. In the absence of an IF signal, the VCO will “search” for a frequency, or its frequency will vary close to twice the IF frequency. When an IF signal is received, the VCO will lock onto the IF signal. The second LO/VCO is a Colpitts oscillator built around transistor Q320. The VCO has a varactor diode, CR310, to adjust the VCO frequency. The control signal for the varactor is derived from a loop filter consisting of C362, C363, C364, R320 and R321. The IF IC (U301) also performs several other functions. It provides a received signal-strength indicator (RSSI) and a squelch output. The RSSI is a dc voltage monitored by the microprocessor, and used as a peak indicator during the bench tuning of the receiver front-end varactor filter. The RSSI voltage is also used to control the automatic gain control (AGC) circuit at the front-end. The demodulated signal on pin 27 of U301 is also used for squelch control. The signal is routed to U404 (ASFIC) where squelch signal shaping and detection takes place. The demodulated audio signal is also routed to U404 for processing before going to the audio amplifier for amplification.
6A-8Receiver4.3 Automatic Gain Control Circuit(Refer toUHF Receiver Front End Schematic Diagramon page 6A-18) The front end automatic gain control circuit is to provide automatic gain reduction of the front end RF amplifier via feedback. This action is necessary to prevent overloading of backend circuits. This is achieved by drawing some of the output power from the RF amplifier’s output. At high radio frequencies, capacitor C331 provides the low impedance path to ground for this purpose. CR308 is a PIN diode used for switching the path on or off. A certain amount of forward biasing current is needed to turn the PIN diode on. Transistors Q315 provides this current where upon saturation, current will flow via R347, PIN diode, collector and emitter of Q315 and R319 before going to ground. Q315 is an NPN transistor used for switching here. Maximum current flowing through the PIN is mainly limited by the resistor R319. Radio signal strength indicator, RSSI, a voltage signal, is used to drive Q315 to saturation hence turning it on. RSSI is produced by U301 and is proportional to the gain of the RF amplifier and the input RF signal power to the radio. Resistor network at the input to the base of Q315 is scaled to turn on Q315, hence activating the AGC, at certain RSSI levels. In order to turn on Q315, the voltage across the transistor’s base to ground must be greater or equal to the voltage across R319, plus the base-emitter voltage (Vbe) present at Q315. The resistor network with thermistor RT300 is capable of providing temperature compensation to the AGC circuit, as RSSI generated by U301 is lower at cold temperatures compared to normal operation at room temperature. Resistor R300 and capacitor C397 form an R-C network used to dampen any transient instability while the AGC is turning on.