Motorola Pr400 Detailed 6881096c25 B Manual
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Chapter 7 VHF Schematic Diagrams, Overlays, and Parts Lists 7.1 Introduction This section provides schematic diagrams, overlays, and parts lists for the radio circuit boards and interface connections. 7.1.1 Notes For All Schematics and Circuit Boards * Component is frequency sensitive. Refer to the Electrical Parts List for value and usage. 1. Unless otherwise stated, resistance values are in ohms (K = 1000), capacitance values are in picofarads (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or micro- henries (µH). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multi- meter or equivalent. If the board has been removed from the chassis, the transmitter module mounting screws may be used for ground connection. (Note: The antenna nut bracket is not connected to ground.) Operating mode dependent voltages are followed by (RX) for receive mode, (TX) for transmit mode, (UNSQ) for unsquelched mode, etc. 3. RF voltages on VHF models are measured with a Fluke model 85 RF probe. The indicated voltages expressed in mV (RF) are DC level readings which correspond approximately 1:1 to the RF voltage level in mV rms. RF voltages in the Receiver Front End and Receiver Back End circuits are measured with an on-channel 100 mV (-7 dBm) RF signal applied to the antenna jack J140. 4. RF voltages on UHF models are measured both with a high-impedance RF voltmeter having a bandwidth in excess of 500 MHz (levels are expressed in dBm) and with a Fluke model 85 RF probe [levels are expressed in mV (RF)]. These indicated voltages are DC level readings which correspond approximately 1:1 to the RF voltage level in mV rms, and are only approxi- mate for UHF frequency measurements. RF voltages in the Receiver Front End and Receiver Back End circuits are measured with an on-channel 100 mV (-7 dBm) RF signal applied to the antenna jack J140. 5. Audio voltages are measured with a high-impedance AC rms voltmeter. The indicated volt- ages are expressed in mV rms. Receive mode voltages are followed by (RX) and are mea- sured with an on-channel signal with 1 kHz modulation at 60% deviation (3 kHz for 25 kHz channels, or 1.5 kHz for 12.5 kHz channels). Transmit mode voltages are followed by (TX) and are measured with a 1 kHz, 10 mV rms signal present at the external microphone input (accessory connector J471 pin 4 hot and pin 7 ground). 6. Reference Designators are assigned in the following manner: Ref. No. Series Circuit Block 1-99RF Front End 100-149 Transmitter RF Stages 150-200Transmitter Power Control 201-250 Frequency Synthesizer 251-300VCO
June, 20056881096C25-B 7-2VHF Schematic Diagrams, Overlays, and Parts Lists: Introduction 7. Circuit Block Interconnection Legend: 301-400 DC Regulation 401-450Microprocessor 451-550 Audio Name Description USWB+Unswitched Battery Voltage (always on) 5V 5 volts (regulated) 5R5 volts in RX mode only 5T 5 volts in TX mode only RESETLow-line reset signal from U320 to uP D3_3V Digital 3.3 volts (regulated) 3VAnalog 3 volts (regulated) TX_ENA Transmit enable signal from uP to transmitter PWR_SETDC voltage from ASFIC to TX power control DEMOD RX audio from backend to ASFIC BW_SELBackend filter BW select from ASFIC RSSI RX signal strength indication from IFIC to uP IF_IN/OUT44.85 MHz from 1st mixer to high IF filter RF_IN/OUT RX signal from antenna switch to front end MOD OUT/INTX modulation from ASFIC to synthesizer 16_8_MHZ Ref osc signal from synthesizer to ASFIC SYNTH_CSSynthesizer chip select from uP SPI_CLK Serial clock from uP SPI_DATA_OUTSerial data from uP LOCK Lock detect indication from synth to uP PRESCVCO freq feedback from VCOBIC to synth V_STEER Steering line voltage from synth to VCOs V_SFSuper-filtered 4.5 volts from synth to VCOBIC VCO_MOD TX modulation from ASFIC to synthesizer TRBTX/RX control from synth to VCOBIC RX_INJ Buffered RX VCO output to RX 1st mixer TX_INJTX VCO output to transmitter input Ref. No. Series Circuit Block
6881096C25-BJune, 2005 VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 7-3 7.1.2 Six Layer Circuit Board Figure 7-1. Six-Layer Circuit Board: Copper Steps in Layer Sequence 7.2 Speaker and Microphone Schematic Figure 7-2. Speaker and Microphone Schematic 7.2.1 Speaker and Microphone Parts List Reference DesignatorMotorola Part No.Description MK15085880L01Microphone, electret SP1 5085738Z08 Speaker assembly with connector LAYER 1 (L1) LAYER 2 (L2) LAYER 3 (L3) LAYER 4 (L4) LAYER 5 (L5) LAYER 6 (L6) INNER LAYERS SIDE 1 SIDE 2 MK1 SP11 2 1 2MATES WITH J470 ON RADIO BOARD MATES WITH J491 ON RADIO BOARD
June, 20056881096C25-B Notes: 7-4VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts Lists7-56881096C25-BJune, 2005Chapter 7 VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts Lists RX_FE_VHF_R1 CONTROLLER VCO_VHF_R1 TX_VHF_R1 RX_BE SYNTH_VHF_R1 V_SF V_STEER 5V 3V5R 16_8_MHZ 3V 5V LOCK MOD_IN PRESC SPI_CLK SPI_DATA_OUT SYNTH_CS TRB VCO_MOD RSSI5V5R 3V 5RUSWB+ 5V USWB+ V_SF V_STEER5T 3V 5T PWR_SET RX_OUT TX_ENA TX_INJUSWB+ 5V BW_SEL DEMOD IF_IN LOCK MOD_OUTPWR_SET RSSI SPI_CLK SPI_DATA_OUTSYNTH_CSTX_ENA USWB+ 3V 5R PRESC RX_INJ TRBTX_INJ VCO_MOD 5R IF_OUT RX_IN RX_INJ 5T 16_8_MHZ 3V 5R5T5V BW_SELDEMOD Figure 7-3. VHF (136-162 MHz) Radio Circuit Block Interconnect Diagram (8486769Z02-A)
7-6VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B 700mV (RF) 3.95V (Rx) 2.0V (Rx) 3.38V (Rx)3.95V (Rx)0V (Tx) 5.0V (Rx) 485mV (RF)500mV (RF) 445mV (RF) 705mV (RF) 3.9V (Rx) 125 mV (RF) 128 mV (RF) 0.74V (Rx) C30 30pF 0.1uF C995.6KRF BALUN 5 NC 4 63 2 1 R25T41 IO11 2 IO2 IO3 3IO4 4 NC TP21 CR41HSMS2829 C3668nH 30pF C22 1000pFL33 L3 C41 15pF 68nH FE_RF_INJ 0 R26 1 C44 20pF SH1 SHIELD68pF R23 22K L21 NUC34 R24 750R51 51 33pFC8 30pF 63 2 1 C7 T42 IF BALUN 5 NC 4 CR1 13 2 MMBD352 68nHL4 68nH L11000pFC20 C3 18pF C4 1 47pFC31 36pF SH40 SHIELDTP1 1 27pF C1 FE_5R L51 150nH 3.3pF C5 13 2 15pF C43 BFS540 Q21L31 68nHC33 C2 43pF27pF C29 R22 6.8K L32 10pF 68nHL4168nH NC 68nH R20 1% 6.8K 100 L40 1000pF R21 FE_RF_IN C26 L22 100nH C23 1000pF 20pF C40C35 33pFL52 C6560nH 25 6314 22pFUMT1Q22 68nH1000pFC25 C32 L2 C2468pF NU 1K FE_IF_OUT 36pFR40 C9 NU C42 RX_IN C51 82pF RX_INJ 5R IF_OUT Figure 7-4. VHF (136-162 MHz) Receiver Front End Schematic Diagram (8486769Z02-A)
VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts Lists7-76881096C25-BJune, 2005 5V for 25kHz RX Back End (Overtone) 0V for 12.5kHz 3.39V 3.05V 0.74V 1.5V 2.1V When -47 dBm @ antenna 9.1pF 1.1%C5312 3 5V 1 23 D51 13 2D52 CR51C71 IF_DEMOD TC7W04F 17 0.1uF GND1 3 4 GND2 IN 1 OUT 2 U52-1 C69CFWC455EFL53 12K0.1uF C73 R521 IN2 OUT 4700pF FL54 CFWC455G GND1 3 GND24 0.1uFC55 5V 0.1uF C56C62 0.1uF C60 0.1uFC67 0.1uF R53 33K2.4K Q70MMBT3904 13 2 R60 C80 22pF 1% C59 2.7pFR73 1.8K NC R74 1.2K 62 1.6K U52-2TC7W04F 5.1KR80 R91 PBR941 Q5113 2 C93 3.6pFC90 0.1uF NUC63 L53 120pF0.1uF R82 1.2uH 2% L54 NU 1uHL81 5V C52 22pF4.7KR57C66 SH52 SHIELD 1 OU T I N10.1uF 44.395MHz TSS2_44_395MHZY51 2 GND 4 GND1 3 2 CC1 5 CC2 1 GND1 4 GND2 3IN6 OUT 44.85MHzMXF45FL51 4 VCC8 C58 3.9pF PWR_GNDU52-4 GND R81 10uFC910.1uFC65 1KR75 12K 20K C57 0.1uF9180468V04 3 GND IN 1 OU T2R64 FLTR FL52 C81 1% 33pFC70 IF_I N RFIN RFIN_DEC 2 5 RSSIOUT RSSI_FEED 9 6 VCC 130pF LIMIN LIMOUT11 13 LIM_DEC1 12 LIM_DEC220 MIXOUT OSCIN 4 3 OSCOUT 10 QUADIN 1 AUDIOOU T 8 7 AUDIO_FEED 15 GN D 18 IFAMPI N 16 IFAMPOUT IFAMP_DEC119 17 IFAMP_DEC2 14 SA616U5 1 680 R78 R77 1% 8.2KR67 5V IF_BAND_SEL 20K R76 1% 12K 0.1uF 36pFC82 5.1KC68 R54R66 20K R63 C72 0.1uF 455KHz 32 1 39K 45B02Y70 5V IF_RSSI SH50 SHIELD 1 R55 330C64 0.1uF 390 R72 39K R65 3.3K R61 100K R62 TC7W04F U52-335 IF_5 V C92 0.1uF 51 R90 BW_SE L 5V IF_IN RSSI DEMOD 47pF C61 47pF C74 Figure 7-5. VHF (136-162 MHz) Receiver Back End Schematic Diagram (8486769Z02-A)
7-8VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B C206 C201 NU RX: 0V3.0V to 8.0V 4.5V UNLOCK: 0V D201 C203 100 NU NUTCXO NU 62pF 0V0V Y201NU TX: 3VLOCK: 3V C202 0.01uF R206Crystal 107 mV (RF) 14R06 NU Reference Oscillator 3V 1SV23247k 3V 2.7pFNU R202NU Y202150k 45J68 220pF 44 mV (RF) 205 mV (RF) 2.4 V (TYP) D2011SV232 6 A15 A24 A3 K1 1K22K33 D220 110KR230 FN_DATA 1000pF C231 1200pF C244 NC 0.1uFC216 C241 FN_PRESC 1200pF NU FN_TRB C206 FN_5V C211 0.1uF FN_V_STEER NC NC FN_MOD 51 R248 FN_V_SF VCON1 R206 NU 45J68Y202 NU GND2 OUT 3VCC4 10uF C226 16.8MHz 160K R247 51 R244 FN_SYNTH_CS 0.1uF C228 C205 NU C293 470pF 0 R212 NC NC R223 FN_3V NC 100 1 SHIELDSH2011FN_LOCK NC SHIELDSH200C227 NC NC NC 1000pF 150 R220 100K 1 R246C245 1uF TP200 C225 10uF NC C223 C224 .01uF .01uF.01uFTP240 1 C213 R205 470pF C208 100 470pF NC NC C210C233 0.1uFC243 2.2uF4.7uF NC C230 5V 5V C212 2.2uF GND2 GND14 OUT 3 IN1 C202NC 16.8MHz 14R06Y201 VMULT4VRO 13 25 WARP 23 XTAL124 XTAL2 62pF 1% SFOUT 37 TEST138 TEST2 21 VBPASS47 VCP 15 VMULT114 VMULT212 VMULT311 PREIN 33 PRE_GND 34 PRE_VDD 35 PVREF 18 REFSEL 27 SFBASE 26 SFCAP 30 SFIN28 4 10 MODIN 41 MODOUT 17 NC1 29 NC2 31 NC3 44 PD_GND PD_VDD 5 32 CLK 7 DATA 6 DGND 36 DVDD 19 FREFOUT45 IADAPT16 INDMULT 43 IOUT LOCK AUX22 AUX33 AUX4 20 AVDD 40 BIAS1 39 BIAS2 42 CCOMP 9 CEX 8 46 ADAPTSW 22 AGND 48 AUX11 560nHL211 63A27U201 R221 150 C219 C207 0.1uF C232 470pF NC 0.1uF 150K R202 C209 470pF FN_CLK 6 A15 A24 A3 1 K1 2 K2 3 K3 D221 .01uF C221 NC FN_VCO_MOD R243 1.8K C215 2.2uFC218 2.2uF C204 470pF C201 220pF NC NC C220 22pF .01uF C222R245 1.5K 1000pF FN_16_8 150K C2173.7% 2.7pF R227 C203 5V 3V PRESC C214 1000pF LOCK V_SF V_STEER 16_8_MHZ SPI_DATA_OUT MOD_IN SYNTH_CS SPI_CLKVCO_MOD TRB Figure 7-6. VHF (136-162 MHz) Synthesizer Schematic Diagram (8486769Z02-A)
VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts Lists7-96881096C25-BJune, 2005 3.0V to 8.0V4.5V RX: 0V TX: 3V206 mV (RF) 850 mV (RF) 1200 mV (RF) 1.35 V (Rx) 1.89 V (Rx) 0.1uF 0.1uFC285 L281 C274 33nH 68nH 10pF C264L254 10pF 1.0% C256 750 VCO_VSF R282 R270 L252 560nH 18 NU VCO_MOD L283C282 C266 1.0% 10pF9.1pF 47 R253 C286 11pF L265 330nH 1SV229D262 680 R284 C268 3.7% 2.7pFC273 .01uF C276 5.1pF R272 9.1K VCO_TX_INJ 6pF C254 180 R283 C290 1200pF C27551pF 13 2 L264 47nHBFS540 Q280 560nH 30 R263 L262D251 C272 0.1uF 19 TRB_IN TX_BASE 16 TX_EMITTER 15TX_IADJ 1 TX_OUT10 TX_SWITCH13 VCC_BUFFERS14 VCC_LOGIC18 17 GND_LOGIC PRESC_OUT12 RX_BASE 5 RX_EMITTER 6RX_IADJ 2 RX_OUT8 RX_SWITCH7 SUPER_FLTR 350U54 U251 COLL_RFIN 4 FLIP_IN 20 GND_BUFFERS 11GND_FLAG 9 1500pF C269 C267 1% 36pFC283 V_SFC284 1200pF 33R274 1200pF V_SF C265 C255 1% 18pF L26315pF 1% C271 100nH 1 .01uF SH250 SHIELD47nH L282 C257 100nH L276 36pF 1% VCO_TRB VCO_5R VCO_PRESC 560nHL251 NC C270 VCO_RX_INJ 1200pF 36K VCO_3V R261C258 V_SF VCO_V_STEER 1200pF 1200pF1200pF C292 C281 R264L292 22068nH C277 1200pFR280 6.8K 16pF 1% C253300 R273 R275 0 SHIELDSH2531 D261 L271 NU 220 R254 560nHL270 330nHL255 0 R286L291 27nH 27pF 1% C263 C2518.2K .01uF R276 R271 NC 1K L253 100nH R281 9.1K43pF C291 SH251 SHIELD 1 R262 V_SF V_STEER PRESC 6.8K VCO_MOD5RTX_INJ RX_INJ 3V TRB Figure 7-7. VHF (136-162 MHz) Voltage Controlled Oscillator Schematic Diagram (8486769Z02-A)
7-10VHF 136-162 MHz (8486769Z02-A) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B 0.9 V (Tx) 7.5 V 0 V (Rx) 0 V (Rx) 7.25 V (Tx) 1.8V (Tx)7.4 V (Rx) 0.15 V (Tx) 2.5 V (Low) 3.0 V (Hi) 2.4 V (Hi) 1.06 V (Low)0 V (Rx) 7.3 V (Tx) 2.5 V (Low) 3.0 V (Hi) 1100 mV (RF)DO NOT MEASURE 1500 mV (RF) 4.9 V (Tx) 820 mV (RF)1.5 V (Tx)0 V (Rx) 1.6 V (Tx) 0 V (Rx) 1500pFR157 5.6K C10043.67nHL132 TAB33 TAB44 C172 1500pF M140 ANTENNA_NUT TAB1 1 TAB2 2 R171 6.8K R121 150 C102 0.1uF C107 10pF L102 100nHD120 MA4PH261 R111 NU C132 C131 15pF 10pF 4.7K R106 1500pFC106R152 1% 100K R101 18 10K R162 2.7pF C171R154 NU C105 R100 300 100K 1% RFOUT3 VDD 2VGG RA07M1317M_VHF U110GND5 1 RFIN4C113 1500pF 560nHL101 NC 560nH L110 0.1uFC108 NC C112 1500pF BFS540 Q100 13 2 10pFC135 R104 51 2.4pF C133 L130 43.67nH 4.3V VR110 .01uF C156 360 R110 43.67nHL131 1500pF PA_TX_INJ C103C137 200pF 560nH C122 15pF U150-2 LM29046 5 78 4 L120 22pF C123 20pF C141 NU C104 S2 T1 T2 330 R156 J140 G1 G2 S1 1500pF C120 0.1uF C170 C121 1500pF 6 4 1 R103 3.3K EMB10 Q170 5 2 3 C111 NU 1500pFC1011.5K R158 57R01U151 NC C114 1500pFC159 PA_PWR_SET 1500pF L121 47nH D121 MA4PH261 3 2 C109 0.1uFQ150 1 16pF C140 1000pF C117100K 1% R153 C115 1uF 150 R120 C110 0.1uF MMBT3904 Q171 13 2 0.1uF C116 R107 150 C154 1500pF PA_RX_OUT C158 1500pFC150 1500pF 1500pF C124 0.1 300 R150 SHIELDSH100 1 R102 R151 13pF C134 22 C155 0.1uF 1.2K R105 11500pF C151 TP150 PA_5T R155 1% 100K PA_USWB+ C136 560nHL100 6.2pF 0.47uF C153 10K R524 C152 L103 30nH L140 1500pF 30.54nH PA_TX_ENA 8 4 C130 15pF U150-1 LM29042 3 1 PWR_SET USWB+ 0.1uF C157 TX_INJ5T TX_ENA RX_OUT Figure 7-8. VHF (136-162 MHz) Transmitter and Power Control Schematic Diagram (8486769Z02-A)