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3: Theory of Operation

3-10

TW7000MS

The Squelch is a syllabic squelch circuit that interfaces with the Audio board.
The squelch circuit is activated via a signal from the Processor board and is
controlled by the squelch on/off switch on the front panel. The receiver’s
automatic gain control (AGC) is generated and the threshold set in the 5 MHz
IF board.

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Содержание TW7000MS

Страница 1: ...eiver Technical Manual Datron World Communications Inc Manual Part No TW7000MS Release Date June 2007 Revision F 3030 Enterprise Court Vista CA 92081 U S A Phone 760 597 1500 Fax 760 597 1510 E Mail sales dtwc com www dtwc com ...

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Страница 3: ... 2 2005 E Information regarding updated boards schematics part lists including the new Processor board Ref Control board and the High Stability option All 6 2007 F Removal of references to LCD driver board information for the FALC option and updates as required to boards schematics and part lists All ...

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Страница 5: ...monstrate that a remedy has been implemented If the user fails to perform the agreement will be terminated by further written notice from Datron Upon termination the user shall immediately return all original Software documentation and any copies of each to Datron This Software is licensed AS IS and Datron provides a war ranty that covers the media upon which the Software is embed ded for a period...

Страница 6: ...f equipment 3 Date of installation Parts returned without this information will not be replaced In the event of a dispute over the age of the replacement part components date coded over 24 months previously will be considered out of warranty Remedies Buyer s sole remedies and the entire liability of Datron are set forth above In no event will Datron be liable to Buyer or any other person for any d...

Страница 7: ... Table 2 2 Pinouts for Accessory Connector 2 2 6 Table 2 3 Pinouts for Accessory Connector 3 2 7 Figure 2 2 Power Cabling Accessories 2 12 Figure 2 3 RF Cabling Accessories 2 13 Figure 2 4 Control Cabling Accessories 2 14 Chapter 3 Theory of Operation 3 1 Transceiver Boards 3 1 3 2 Power Distribution 3 1 Figure 3 1 System Diagram 3 3 Figure 3 2 Power Distribution Diagram 3 4 Table 3 1 Transceiver ...

Страница 8: ...lock Diagram 4 40 Figure 4 11 VSWR Detector Board Component Locations 738293 Rev F 4 42 Figure 4 12 VSWR Detector Board Schematic Diagram 994240 Rev D 4 43 Table 4 7 VSWR Detector Board Parts List 001 00201 Rev J 4 45 4 5 RF Filter Board 4 46 Figure 4 13 RF Filter Board Block Diagram 4 47 Figure 4 14 RF Filter Board Component Locations 738228 Rev K 4 48 Figure 4 15 RF Filter Board Schematic Diagra...

Страница 9: ...4 32 Front Panel Switch Board Schematic Diagram 994149 Rev A 4 129 Table 4 24 Switch Board Parts List 001 00110 Rev A1 4 131 4 11 Processor Board 4 132 Figure 4 33 RX Audio Distribution Block Diagram 4 138 Figure 4 34 TX Audio Distribution Block Diagram 4 138 Table 4 25 Enable Line Description 4 139 Table 4 26 Parallel Printer Description 4 140 Table 4 27 Processor Board Interconnections 4 141 Fig...

Страница 10: ...0FALC 6 20 Figure 6 10 Fast ALC Board Component Locations 738341 Rev A 6 22 Figure 6 11 Fast ALC Board Schematic Diagram 994074 Rev A 6 23 Table 6 3 Fast ALC Parts List 001 00207 Rev B 6 25 6 7 FSK Remote Control Option 7000RF 6 28 Figure 6 12 FSK Remote Control Jumper Placement 6 29 Figure 6 13 FSK Remote Control Component Locations 738232 Rev D 6 30 Figure 6 14 FSK Remote Control Schematic Diagr...

Страница 11: ...cement Option 7000VEM 6 77 6 16 Wideband 1 Option 7000WB1 6 77 Figure 6 27 Wideband 1 Component Placement 6 78 Chapter 7 System Variations 7 1 Computer Control TW7000C 7 1 7 2 Extended Front Panel Control TW7000E 7 1 Figure 7 1 TW7000E Connector Transition Component Locations 738256 Rev C 7 2 Figure 7 2 TW7000E Connector Transition Schematic Diagram 994187 Rev B 7 3 Table 7 1 TW7000E Connector Tra...

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Страница 13: ...plete selection of accessories including power supplies antenna tuners high power amplifiers data terminal equipment etc DWC offers systems using the TW7000 configured in a variety of ways to solve communication requirements 1 2 Transceiver Configurations The TW7000 is offered in a fixed station package in a rack mount version using the DWC rack mount kit or in a number of remote and extended cont...

Страница 14: ...t ALC loop for use with linear amplifiers like the TW1000D that utilize peak detection ALC 7000HS High stability reference oscillator allows 0 1 parts per million frequency stability 7000HS FALC High Stability reference oscillator and fast ALC loop operation 7000NB Impulse type noise blanker used in high noise environments 7000RCDR Combines receive and transmit audio and routes them to Accessory 2...

Страница 15: ...for extended control use A line driver panel replaces the standard front panel It is used with the TW7201E control head for remote operation up to 15m 50 ft TW7000PP Allows the addition of the TW5830 Pre Postselector and TW5830INST installation kit for co sited operation Note The TW5830 requires the TW7000 to have both the TW7000PP and the TW5830INST The TW7000 is not field upgradeable to a TW7000...

Страница 16: ... on page 2 4 1 8 Technical Specifications Note Specifications are subject to change without notice or obligation Characteristic Specification General Frequency Range 1 6 to 30 MHz TX 100 Hz to 30 MHz RX 10 Hz channel spacing Preset Channels 256 standard 1000 optional Scanning Multiple scan groups operator selectable scan rates Channel Programming From front panel or remotely via computer or dedica...

Страница 17: ...TW7201F MS Mechanical Environmental Size H x W x D 3 5 in x 13 in x 17 in 8 9 cm x 33 cm x 43 cm Weight 21 lbs 9 5 kg Cooling On demand fan internal Temperature 30 C to 60 C operating Shock Vibration Per MIL STD 819 Transmitter RF Power Output 125W PEP 100W average Duty Cycle Continuous service all modes Harmonics 60 dB 2 to 30 MHz nominally Receiver Sensitivity 10 dB SINAD for 0 5µV input 2 to 30...

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Страница 19: ...on pertains to the main body of the TW7000 whether it is controlled locally or from a remote site 2 3 1 Fixed Station Unless otherwise specified when ordered the TW7000 is shipped ready for operation It is also available for mounting in a rack provided the appropriate rack kit is ordered Make sure the temperature at the location is within the specified range and that there is adequate ventilation ...

Страница 20: ... with the TW7000 All DWC supplied audio accessories have the correct mating connector on them To use other low level audio accessories the correct mating connector can be obtained from DWC The pin assignments for the two connectors are as follows 2 5 Rear Panel Connections The rear panel of the TW7000 is fabricated from aluminum sheet metal and attached to the rear panel bezel by 6 screws The patt...

Страница 21: ...ting plug is attached to the input DC power cable C991829 supplied with the TW7000 This cable has two 12 AWG conductors is 6 5 ft long and open ended for convenient connection to a variety of 12 Vdc sources For specific connections refer to the Power Cabling Accessories figure on page 2 12 The pin assignments for the input power connector are as follows The DC power connection between the TW7000 a...

Страница 22: ... antenna connector is a type SO 239 connector Broadband antennas and dipoles can be connected directly to this output while high power amplifiers and antenna tuners use specially designed DWC cables For specific connections refer to the RF Cabling Accessories figure on page 2 13 2 5 3 Accessory Connections A variety of external accessories are available from DWC for use with the TW7000 For some of...

Страница 23: ...end 4 COM1TXD TX data 5 COM1RTS ready to send 6 BALRXA1 balanced RX audio 7 BALRXA2 balanced RX audio 8 BALTXA1 balanced TX audio 9 BALTXA2 balanced TX audio 10 AUXPTT 11 Select 12 Busy 13 12V ACC 14 EXTCWKEY external CW key 15 Strobe 16 Data 0 17 Data 1 18 Data 2 19 Data 3 20 Data 4 21 Data 5 22 Data 6 23 Data 7 24 ACK acknowledge 25 DI OSEL ...

Страница 24: ...udio 7 BALRXA4 balanced RX audio 8 BALTXA3 balanced TX audio 9 BALTXA4 balanced TX audio 10 AUXPTT 11 COM2RXD COM2 RX data 12 COM2TXD COM2 TX data 13 12V ACC 14 EXTCWKEY external CW key 15 Spare 16 ACHKTUNE tuner check tune 17 ADATA tuner data 18 ACLOCK tuner clock 19 ASTROBE tuner strobe 20 TC SCALM alarm 21 RETX retransmit 22 EXTSPKR speaker audio 23 SQA squelch audio 24 12V ACC 25 12V ACC ...

Страница 25: ...FILTG 4 AMPALC external amplifier ALC line 5 AMPPTT external amplifier PTT line 6 FLTA low pass filter select lines 7 FLTB low pass filter select lines 8 FLTC low pass filter select lines 9 FLTD low pass filter select lines 10 FLTE low pass filter select lines 11 FLTF low pass filter select lines 12 FLTG low pass filter select lines 13 5V 14 Ground 15 Ground 16 EXTCLK external clock 17 EXTRXD exte...

Страница 26: ... option and to specify the required protocol so the appropriate interface chip is inserted into the processor Pins on Accessory 1 are If the 7000RS option is installed the COM1TXD and COM2RXD becomes a 2 wire bidirectional RS422 485 interface Pin Number Description 1 Ground 6 BALRXA3 balanced RX audio 7 BALRXA4 balanced RX audio 8 BALTXA3 balanced TX audio 9 BALTXA4 balanced TX audio 10 AUXPTT 13 ...

Страница 27: ...RAT1000C The AT100 RAT100 and RAT1000C connect to Accessory 2 using the following pins The AT7000B and RAT7000B uses Accessory 3 with the following pins Pin Number Description 1 Ground 11 COM2RXD 12 COM2TXD Pin Number Description 1 Ground 2 Ground 4 ANUINIT tune initiate 5 ATUKEY 16 ACHKTUNE tuner check tune 17 ADATA tuner data 18 ACLOCK tuner clock 19 ASTROBE tuner strobe 24 12V ACC Pin Number De...

Страница 28: ...all Selcall Alarm The external ALE Transcall Selcall alarm driver is available on Accessory 2 using the following pins Pin Number Description 1 Ground 2 COM1RXD RS422 RS485 4 COM1TXD RS422 RS485 6 BALRXA1 balanced RX audio 7 BALRXA2 balanced RX audio 8 BALTXA1 balanced TX audio 9 BALTXA2 balanced TX audio 10 AUXPTT 14 EXTCWKEY external CW key Pin Number Description 1 Ground 11 Select 12 Busy 15 St...

Страница 29: ...sing Accessory 3 with the following pins Pin Number Description 1 Ground 22 EXTSPKR speaker audio Pin Number Description 1 Ground 2 Ground 3 FILTG 4 AMPALC external amplifier ALC line 5 AMPPTT 6 FLTA low pass filter select line 7 FLTB low pass filter select line 8 FLTC low pass filter select line 9 FLTD low pass filter select line 10 FLTE low pass filter select line 11 FLTF low pass filter select ...

Страница 30: ...2 Installation 2 12 TW7000MS Figure 2 2 Power Cabling Accessories ...

Страница 31: ...e 2 3 RF Cabling Accessories REMOTE RF DC IN ACC 3 ACC 2 ACC 1 IN OUT F1 F2 GND RF IN RF OUT TW1000D IN OUT RF IN RF OUT TW500D F1 F2 GND C991539 C991505 RAT1000C AT7000B C991507 To Front Panel Connector C991505 C991539 C991620 C991559 ...

Страница 32: ...OUT F1 F2 GND RF IN RF OUT TW1000D IN OUT RF IN RF OUT TW500D F1 F2 GND TW7201E REMOTE DT5300 DT110 DT9400 C992216 DC IN ACC 2 ACC 1 REMOTE TW7201 TW7000 C992307 C991830 To Front Panel Connector C992361 C992377 C992161 TW5300 C991897 TW5850 C992094 C991964 C992216 C991938 C991552 C991906 AT7000B RAT1000C RAT1000P ...

Страница 33: ... distances up to 50 feet FSK and ISDN Remote Control You can control the TW7000 remotely from longer distances using the TW7201F and the TW7201I remote control heads Both control heads require that you install modem interface boards 7000RF or 7000RI inside the TW7000 The TW7201F uses FSK and is for long range remote requirements while the TW7201I uses ISDN and is for real time control up to 2 km T...

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Страница 35: ...tors are made using a combination of coaxial cable and ribbon cable assemblies For more information on these boards refer to the System Diagram figure on page 3 3 3 2 Power Distribution Figure 4 2 and Table 4 1 explain the power distribution in the TW7000 The TW7000 receives its primary power via the 12 28VDC INPUT connector on the rear panel This power is routed to the Power Supply board and ente...

Страница 36: ... Vdc drives the heat sink fan 12V Regulated switched filtered 12 Vdc provides power to all internal subassemblies in the TW7000 except the front panel 5V Regulated switched filtered 5 Vdc for the Processor board accessory 3 connector and the ALE option slot Voltage Description ...

Страница 37: ...00201 001 00320 001 00310 001 00710 001 00206 001 00901 001 00800 12V PA 5 MHz IF Audio Squelch Processor Power Supply LCD Drivers FP Processor Display Control Signals Front Panel Switch Assembly Keypad Assembly Keypad Microphone Front Panel Controls Speaker 001 01100 12V ACC 12V 5V 12V UNREG 001 00410 12 Vdc Input 001 00121 001 00143 001 01200 001 00600 001 00130 ...

Страница 38: ...iagram Power Supply 001 00410 GRD 5V 12V 12V UNREG 12V ACC GRD 12 VPA J26 2 J26 1 1 J20 9 10 21 22 J20 4 5 16 17 J20 12 13 24 25 PWRON 12V Fan Fan E2 E1 J20 6 7 18 19 2 12 Vdc Input 1 2 Fuse 25A J21 7 J24 2 J24 1 3 J26 3 J20 1 2 3 14 15 J21 1 14 ...

Страница 39: ...ly Remote Pin 2 12V Processor board J14 A31 B31 J15 A31 B31 Reference control board J3 2 RF Filter board J22 3 4 Synthesizer board J4 2 15 75 MHz IF board J6 2 15 5 MHz IF board J5 2 15 Audio board J7 2 15 ECU RCU board J11 2 15 ALE board J13 2 15 Option slot 1 J9 2 15 Option slot 2 J10 2 15 Noise Blanker FM board J2 2 15 5V Rear panel assembly Accessory 3 Pin 13 Processor board J15 A29 A30 B29 B3...

Страница 40: ...iver Frequency Generation 5 MHz IF Board 5 MHz IF Board 75 MHz IF Board Synthesizer Board 001 00901 1st LO 2nd LO 3rd LO Reference Ground 12V J59 J54 J55 J61 J4 2 15 J4 1 14 J61 Reference Control Board 001 00206 Reference Ground 12V J3 2 J3 1 J55 J54 J59 ...

Страница 41: ...000MS 3 7 Figure 3 4 Transceiver Frequency Mixing Schematic 5 MHz IF Board 75 MHz IF Board Transceiver Audio 3rd LO BFO 5 000 5 0036 MHz 2nd LO 70 MHz 1st LO RX 75 105 MHz TX 76 6 105 MHz Transceiver Channel Frequency 1 30 MHz ...

Страница 42: ...s depending on the mode selected This allows the use of only one sideband filter instead of the usual two USB and LSB giving the transceiver both modes as standard equipment The third value of BFO 5 0036 MHz is for USB operation when the optional wideband data filter is installed The first LO is offset by 3 kHz in USB mode with the standard voice grade filter and by 3 6 kHz in USB mode with the op...

Страница 43: ...z then filtered amplified and mixed with the third LO BFO to get to baseband audio The demodulated audio DEMODA exits the 5 MHz IF at J5 21 and goes to the Audio board J8 21 In the Audio board audio is processed passed through the squelch gate and sent out as unbalanced squelched audio via J8 7 to the front panel J1 30 to drive the speaker or to Accessory 2 pin 22 Unbalanced squelched audio is pro...

Страница 44: ...uit that interfaces with the Audio board The squelch circuit is activated via a signal from the Processor board and is controlled by the squelch on off switch on the front panel The receiver s automatic gain control AGC is generated and the threshold set in the 5 MHz IF board ...

Страница 45: ...00600 Antenna 5 MHz IF 001 00800 Processor 001 01101 Accessory 2 Z a Accessory 1 Z a ANT RF Front Panel J1 20 ANT RF J50 RX RF J52 J52 RX RF 75 MHz IF J53 J53 J5 21 J8 21 DEMODA 75 MHz IF DEMODA SQA BALRXA 1 2 J8 7 J8 6 19 J8 11 24 3rd LO 2nd LO Squelch RRXA RRXA J14 A22 J15 B26 J14 A26 J8 4 J8 17 J8 23 J55 J54 J59 1st LO J49 J50 ANT BALRXA 3 4 ...

Страница 46: ...F It is amplified again in the TX exciter circuitry before sent to the RF power amplifier In the power amplifier the signal is amplified to its final output power level and routed to the RF Filter board The RF Filter board provides the necessary harmonic filtering before the signal reaches the antenna port Just prior to this the signal passes through the VSWR circuit where it is sampled by a forwa...

Страница 47: ...17 Audio Board 001 00600 3rd LO 2nd LO 75 MHz IF 001 00710 001 00206 RF Amplifier 12V 001 00310 5 MHz IF 001 00800 RAWALC FWDPWR ANT RF TX RF HI TX RF HI TX RF LOW REVPWR ANT RF J50 J19 3 J19 2 J50 J51 J3 15 J3 14 J3 12 J12 J10 J60 TX RF LOW 75 MHz IF J6 12 J53 J53 J5 8 J8 8 J8 20 J8 5 18 J8 12 25 MODA 75 MHz IF PRIMICA BALTXA 1 2 J59 1st LO J55 J54 BALTXA 3 4 ANT RF J49 ...

Страница 48: ...o the main processor to initiate the appropriate action in the radio The main processor controls all radio operation and processes any commands received from the rear panel accessory connectors For more information regarding the main processor refer to the Processor Board section on page 4 132 3 8 Mainframe The mainframe schematic that follows displays all of the interconnect wiring between the fr...

Страница 49: ...J4 17 J59 J59 3RD L O 2ND L O J54 J55 J4 1 14 J4 2 15 PTT 12V GND EN1 EN2 EN3 EN4 EN5 J4 13 J4 25 J4 12 J4 24 J4 11 J4 5 EN1 EN2 EN3 EN4 EN5 J14 B3 J14 A3 J14 B4 J14 A4 J14 B5 J61 J3 5 J3 2 J3 1 J4 4 J4 16 J4 3 J3 4 J3 16 J3 3 J61 1ST L O REF SPICLK SPITXD SPIRXD PTT 12V GND REF SPICLK SPITXD SPIRXD RAWALC BITE J3 12 J3 17 FB1 FB1 FB2 FB3 FB4 FB5 FB6 FB7 TRSW RXOVLD FLTTST FB2 FB3 FB4 FB5 FB6 FB7 ...

Страница 50: ...s DC voltages used throughout the radio the power supply contains reverse polarity and over under voltage protective circuits It has decoder and line driver circuitry that takes the serial harmonic filter band switching data from the Processor board and translates it into parallel data for use with external high power RF amplifiers This information is sent via connector J25 directly to the Accesso...

Страница 51: ...rest of the TW7000 Table 4 1 Power Supply Interconnections Connector J26 Description 1 Ground 2 12 Vdc PWR 3 VS Connector J25 Description 1 2 3 4 Ground 11 FLTA 13 FLTB 15 FLTC 17 FLTD 19 FLTE 21 FLTF 23 FLTG Connector J20 Description 1 2 3 14 15 Ground 4 5 16 17 12V 6 7 18 19 12V ACC 9 10 21 22 12V UNREG 12 13 24 25 5V Connector J21 Description 4 SPICLK 7 PWRON 13 EN8 ...

Страница 52: ...ter to J20 4 12 0 Vdc 6 Vdc should be present Vary the power supply from 10 5 Vdc to 16 Vdc The voltage at test point should drop to zero when the power supply is at or below 10 0 Vdc and at or above 15 8 Vdc J25 5 to J21 25 J25 12 to J21 22 J25 6 to J21 12 J25 14 to J21 9 J25 7 to J21 24 J25 16 to J21 21 J25 8 to J21 11 J25 18 to J21 8 J25 9 to J21 23 J25 20 to J21 20 J25 10 to J21 10 J26 2 13 8 ...

Страница 53: ... Power Relay 12 Vdc Regulator 12 Vdc Regulator 5 Vdc Regulator Fan Decoder Driver Fan External Amp Filter Decoder Driver Amp 12V Unreg 12V PA 12V 12V ACC 5V PWR ON 12 VDC PWR J20 4 5 16 17 J20 6 7 18 19 J20 12 13 24 25 J20 9 10 21 22 E2 J26 J21 7 J25 11 J25 13 J25 15 J25 17 J25 19 J25 21 J25 23 J21 13 FLT A FLT B FLT C FLT D FLT E FLT F FLT G EN 8 J24 1 ...

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Страница 55: ...4 Technical Description Power Supply Board 4 6 TW7000MS Figure 4 2 Power Supply Board Component Locations 738223 Rev G ...

Страница 56: ...Figure 4 3 Power Supply Board Schematic Diagram 994158 Rev M 4 7 TW7000MS ...

Страница 57: ...RA 1SP C21 234470 CAP 47MF 35V ELECT VRT C22 237101 CAP 100MF 16V ELECT VRT C23 275104 CAP 0 1UF X7R 50V 10 0 1LS C24 275104 CAP 0 1UF X7R 50V 10 0 1LS C25 232100 CAP 10UF AL 35V 20 5X7 0 1LS C26 232100 CAP 10UF AL 35V 20 5X7 0 1LS C27 275104 CAP 0 1UF X7R 50V 10 0 1LS C28 241226 CAP T 22UF 25V 20 RA 1SP C29 275104 CAP 0 1UF X7R 50V 10 0 1LS C3 214103 CAP C 0 01U 50 10 X RA 1SP C30 232100 CAP 10UF...

Страница 58: ...0 1 TH J25 614021 HEADER DIN 26PIN 100 VERTICLE J26 610209 HEADER MLX 3PIN 156 POLAR K1 540079 RELAY SPDT 12VDC 10 AMP L1 450132 IND ASSY 3T 28 MGT 1 490201 L2 450132 IND ASSY 3T 28 MGT 1 490201 L3 450132 IND ASSY 3T 28 MGT 1 490201 L4 450132 IND ASSY 3T 28 MGT 1 490201 L5 450132 IND ASSY 3T 28 MGT 1 490201 L6 450132 IND ASSY 3T 28 MGT 1 490201 L7 450132 IND ASSY 3T 28 MGT 1 490201 L8 430048 CHOKE...

Страница 59: ... 1 8W 1 METAL FILM R24 1113650 RES 365ohm 1 8W 1 MF R3 1110000 RES 0 OHM 1 8W 1 R31 113103 RES 10K 1 8W 5 CARBON FILM R33 113100 RES 10 OHM 1 8W 5 FILM R4 113101 RES 100 OHM 1 8W 5 CF R5 113101 RES 100 OHM 1 8W 5 CF R6 113101 RES 100 OHM 1 8W 5 CF R7 1110000 RES 0 OHM 1 8W 1 R8 1110000 RES 0 OHM 1 8W 1 R9 113101 RES 100 OHM 1 8W 5 CF U1 330384 IC 5821 8 BIT SER DRIVER DIP16 U2 330384 IC 5821 8 BIT...

Страница 60: ...ability option is installed the optional oscillator mounts to this board and the board is given a new part number Table 4 3 Reference Control Board Interconnects Connector J3 Description Comment 1 Ground 2 12V input 3 No connection No connection 4 SPICLK Clock 5 PTT PTT 6 FB2 Filter band 2 control line 7 FB4 Filter band 4 control line 8 FB6 Filter band 6 control line 9 TRSW T R relay control line ...

Страница 61: ...e U2 pin 16 5 25V U5 output 8 0V 4 2 Verify that the oscillator is stabilized 3 Set the radio transmit frequency to 30 0 MHz and the radio mode to USB AME 4 Key the PTT measure the RF output of the radio and adjust the oscillator for 30 000000 MHz 5 Verify the transmit frequency at 15 0 MHz and 2 0 MHz The frequency error should not exceed the specification for the installed oscillator option 6 Re...

Страница 62: ... 2 Key the radio at 30 MHz and ground J3 10 The power out should reduce Digital TX Power Adjustment 1 Key the radio in high power at 14 75 MHz 2 Check for low power at approximately 10W medium power at approximately 25W and high power at approximately 100W with Alpha 5 set to the default settings for each power level refer to the TW7000 MSOP operator manual for information on the Alpha menu and fu...

Страница 63: ...Diagram Decoder Driver OCXO Option BITE Circuit TCXO BITE PWRLVL RAWALC Amp Amp Amp Amp Digital Control Pot AMPALC REVPWR FWDPWR EN 10 REF FLTTST J3 24 SPICLK SPITXD EN 7 J3 16 J3 4 Amp J3 13 J3 21 FB1 J3 8 J3 20 J3 7 J3 19 J3 6 J3 18 J3 25 FB2 FB3 FB4 FB5 FB6 FB7 J3 15 J3 14 J3 10 J61 J3 17 J3 23 J3 12 ...

Страница 64: ...4 Technical Description Reference Control Board 4 16 TW7000MS Figure 4 5 Reference Control Board Component Locations 738341 Rev A ...

Страница 65: ...F R69 270K 5V R23 2 2K R65 10K C9 0 1U R67 47K 12 13 11 3 5 4 GND 8 CLK 7 RST 6 VB 1 Vcc 16 COUT 10 DQ 9 SOUT 14 15 2 U2 DS1267 O5 12 O4 11 O3 6 O2 5 O1 4 O6 13 O7 14 O0 3 VCC 1 GND 16 SER IN 2 SRCK 15 RCK 10 SER OUT 9 G 8 CLR 7 U1 TPIC6C595 Q4 2N7002 R11 47K 5V C1 2 2U C3 0 1U D1 4148 D3 4148 D6 4148 D7 4148 D2 4148 D4 4148 D5 4148 12V R2 10K C7 2 2U C2 0 1U C4 0 1U R7 10K 5V NC NC R1 25K R22 25K...

Страница 66: ...7R 25V 5 0805 C28 021181000 CAP 180PF NPO 100V 5 0805 C29 021181000 CAP 180PF NPO 100V 5 0805 C3 021104000 CAP 0 1UF X7R 25V 5 0805 C30 021104000 CAP 0 1UF X7R 25V 5 0805 C32 021103000 CAP 0 01UF X7R 50V 5 0805 C33 022476000 CAP 47UF TA 20V 20 7343 C34 021104000 CAP 0 1UF X7R 25V 5 0805 C35 021104000 CAP 0 1UF X7R 25V 5 0805 C36 022476000 CAP 47UF TA 20V 20 7343 C37 022106001 CAP 10UF TA 16V 10 60...

Страница 67: ...OSFET SOT 23 Q3 032005 XSTR 2N7002 N MOSFET SOT 23 Q4 032005 XSTR 2N7002 N MOSFET SOT 23 Q5 032005 XSTR 2N7002 N MOSFET SOT 23 Q6 032006 XSTR MMBT2907A PNP SOT 23EBC Q7 032001 XSTR J310 NFET SOT 23 R1 170335 RES 25K TRIM SIDE ADJ R10 013101000 RES SM CF 100R 0 1W 5 0805 R11 013473000 RES SM CF 47K 0 1W 5 0805 R12 013101000 RES SM CF 100R 0 1W 5 0805 R13 013101000 RES SM CF 100R 0 1W 5 0805 R14 013...

Страница 68: ...5 0805 R41 013123000 RES 12K OHM 1 8W 5 TK 0805 R42 013473000 RES SM CF 47K 0 1W 5 0805 R43 013101000 RES SM CF 100R 0 1W 5 0805 R44 013753000 RES SM CF 75K 0 1W 5 0805 R45 013101000 RES SM CF 100R 0 1W 5 0805 R46 013273000 RES SM CF 27K 0 1W 5 0805 R47 013473000 RES SM CF 47K 0 1W 5 0805 R48 013101000 RES SM CF 100R 0 1W 5 0805 R49 013472000 RES SM CF 4 7K 0 1W 5 0805 R51 013471000 RES SM CF 470R...

Страница 69: ...5 0805 R84 013110100 RES SM TK 1 1KOHM 0 1W 1 0805 R9 013464000 RES 464 OHM 1 8W 1 TK 0805 U1 033087 IC 8BIT SHIFT TPIC6C595 SO 16 U2 033305003 IC DS1267S 10KX2 DIG POT SOW16 U3 033304000 IC SM LM2902D QUAD OP SO 14 U4 033003 IC VREG 78L05 5V 5 SOIC 8 U5 033002 IC VREG 78L08 8V 5 SOIC 8 U6 033081 IC MC74HC02AD SO 14 751A 02 Y1 361117 TCXO 16 777216MHz 0 5PPM Table 4 4 Reference Control Board Parts...

Страница 70: ... to 105 MHz in 10 Hz increments The second LO is the fixed 70 MHz output of the voltage controlled oscillator The third LO is generated by another PLL tied to the overall reference frequency of the radio and programmed to one of three outputs depending on the setting of the front panel mode switch 4 3 1 Interconnections For the interconnect lines between the Synthesizer board and the rest of the r...

Страница 71: ... on U3 pin 3 set the scope to a 10 mv scale 20 ms time Adjust L13 L17 for a maximum signal approximately130 mVPP minimum 5 Set the radio frequency to 30 00 MHz Carefully adjust L5 for 10 Vdc 25 at U5 pin 1 Miscellaneous Test 1 Measure the voltage at U5 pin 8 for 9 Vdc 5V 2 Verify that the RX tone is present with the signal generator set at 113 dBm and 8 001 MHz and the radio at 8 MHz USB SINAD sho...

Страница 72: ... 999 MHz TX wave should be approximately 100W with no distortion Input Output Signals 1 The reference input signal at J61 should read 16 777 216 Hz The level should be 2 VPP 2 The first LO output signal at J59 should read 75 to 105 MHz The level should be 0 dBm 2 dBm 3 The third LO BFO output signal at J55 should read 5 000 MHz and 5 003 MHz The level should be 0 dBm 2 dBm 4 The second LO output s...

Страница 73: ...Loop Filter Amp Amp BITE Switch Filter Amp Amp Amp Synthesizer Loop Filter Filter BITE Decoder Amp VCO 2nd LO A U1B 4 19 1 U1A 12 7 10 12 15 J55 J61 J4 13 REF EN1 Amp 1st LO PLL VCO EN3 10 95 to 44 MHz 7 8 16 15 1 11 J4 12 J4 25 2 6 NCO DAC Filter 20 17 1 5 6 A 63 00 to 64 05 MHz 1 1 8 3 4 5 95 to 7 00 MHz J54 J59 J4 24 J4 17 BITE EN4 1st LO 2nd LO EN2 ...

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Страница 75: ...4 Technical Description Synthesizer Board 4 28 TW7000MS Figure 4 8 Synthesizer Board Component Locations 738351 Rev F ...

Страница 76: ...001 J54 2ND L O T21 2T 2T C36 10 C37 001 L12 5V C40 001 C41 12p C42 47p L13 C43 2 2p C44 47p L14 C45 1 8p C46 47p L15 C47 1 8p C48 47p L16 C49 7p L17 C50 56p C51 180p T18 2T 2T RF 1 GND 2 IF 3 IF 4 GND 5 GND 6 GND 7 LO 8 MIXER MX1 SRA 1 C55 100p C56 51p L20 C57 150p C58 18p L21 C59 120p C60 001 1 3 4 2 U3 MAR6 R33 68 L22 C61 01 L23 5V C62 001 C63 100p C64 51p L24 C65 150p C66 18p L25 C67 120p T3 2...

Страница 77: ...CAP C 0 01U 100 10 X AX 25SP C110 277103 CAP C 0 01U 100 10 X AX 25SP C111 210070 CAP 7PF NPO 50V 5PF 0 1LS DSK C112 277104 CAP C 0 1U 50 10 X AX 25SP C113 277104 CAP C 0 1U 50 10 X AX 25SP C115 277104 CAP C 0 1U 50 10 X AX 25SP C116 231101 CAP 100U 16V 20 RADIAL 1SP C117 277103 CAP C 0 01U 100 10 X AX 25SP C118 277103 CAP C 0 01U 100 10 X AX 25SP C119 277100 CAP ML 10PF AXIAL NPO 5 C12 277102 CAP...

Страница 78: ... CAP ML NPO 33PF 100V 5 0 1S C31 277102 CAP C 1000P 100 10 X AX 25SP C32 275151 CAP ML 15OPF NPO 100V 5 0 1S C33 275470 CAP ML 47PF NPO 5 100V 0 1SP C34 277102 CAP C 1000P 100 10 X AX 25SP C35 275102 CAP C 001UF 100V 5 N RA 1SP C36 241100 CAP 10MF DIP TANTALUM C37 277102 CAP C 1000P 100 10 X AX 25SP C38 277103 CAP C 0 01U 100 10 X AX 25SP C39 277102 CAP C 1000P 100 10 X AX 25SP C4 221221 CAP 220PF...

Страница 79: ... 1000P 100 10 X AX 25SP C61 277104 CAP C 0 1U 50 10 X AX 25SP C62 277102 CAP C 1000P 100 10 X AX 25SP C63 221101 CAP 100PF DM5 MICA C64 210510 CAP 51 PF 5 50V DISC NPO C65 275151 CAP ML 15OPF NPO 100V 5 0 1S C66 275180 CAP ML 18PF 5 100V NPO 0 1 S C67 275121 CAP ML 120PF NPO 5 100V 0 1S C68 241100 CAP 10MF DIP TANTALUM C69 277102 CAP C 1000P 100 10 X AX 25SP C7 277102 CAP C 1000P 100 10 X AX 25SP ...

Страница 80: ...241100 CAP 10MF DIP TANTALUM C92 277102 CAP C 1000P 100 10 X AX 25SP C93 241100 CAP 10MF DIP TANTALUM C94 277102 CAP C 1000P 100 10 X AX 25SP C95 277103 CAP C 0 01U 100 10 X AX 25SP C96 275271 CAP ML NPO 270PF 100V 5 0 2S C97 210200 CAP 20 PF DISC NPO C98 221301 CAP 300 PF DM5 MICA C99 221101 CAP 100PF DM5 MICA D1 320002 DIODE 1N4148 1N4150 DO 35 D10 320002 DIODE 1N4148 1N4150 DO 35 D11 320305A VA...

Страница 81: ...90114 CORE 6 5T MD SQ LG PI CORE L14 490114 CORE 6 5T MD SQ LG PI CORE L15 490114 CORE 6 5T MD SQ LG PI CORE L16 490114 CORE 6 5T MD SQ LG PI CORE L17 490114 CORE 6 5T MD SQ LG PI CORE L18 430013 INDUCTOR FIXED 27 UHY L19 459032 IND ASY 3T 30 MAGNET 1 490201 L2 459032 IND ASY 3T 30 MAGNET 1 490201 L20 459260 IND ASSY 8T 24 MAG 1 490032 L21 459261 IND ASSY 9T 24 MAG 1 490032 L22 459032 IND ASY 3T 3...

Страница 82: ...TR J310 N JFET TO92 Q10 310032 XISTOR NPN 2N5770 TO92 Q11 310165 XSTR BFY90 NPN RF TO 72 Q12 310052 XSTR PN2907A PNP TO92 Q13 310138 XISTOR FET VN2222LL TO92 Q15 310057 XISTOR NPN PN2222A TO92 Q2 310033 XSTR J310 N JFET TO92 Q3 310138 XISTOR FET VN2222LL TO92 Q4 310138 XISTOR FET VN2222LL TO92 Q5 310052 XSTR PN2907A PNP TO92 Q6 310033 XSTR J310 N JFET TO92 Q7 310033 XSTR J310 N JFET TO92 Q8 310032...

Страница 83: ...3223 RES 22K 1 8W 5 CARBON FILM R29 113101 RES 100 OHM 1 8W 5 CF R3 113681 RES 680 OHM 1 8W 5 CF R30 113221 RES 220 OHM 1 8W 5 CF R31 113122 RES 1 2K 1 8W 5 CARBON FILM R32 113561 RES 560 OHM 1 8W 5 CF R33 113680 RES 68 OHM 1 8W 5 CF R34 113472 RES 4 7K 1 8W 5 CARBON FILM R35 113334 RES 330K 1 8W 5 CARBON FILM R36 113473 RES 47K 1 8W 5 CARBON FILM R37 113222 RES 2 2K 1 8W 5 CARBON FILM R38 113222 ...

Страница 84: ...LM R58 113473 RES 47K 1 8W 5 CARBON FILM R59 113152 RES 1 5K 1 8W 5 CARBON FILM R6 113181 RES 180 OHM 1 8W 5 CF R60 113101 RES 100 OHM 1 8W 5 CF R61 113102 RES 1K 1 8W 5 CF R62 113102 RES 1K 1 8W 5 CF R63 113102 RES 1K 1 8W 5 CF R64 113101 RES 100 OHM 1 8W 5 CF R65 113101 RES 100 OHM 1 8W 5 CF R66 113221 RES 220 OHM 1 8W 5 CF R67 113473 RES 47K 1 8W 5 CARBON FILM R68 113472 RES 4 7K 1 8W 5 CARBON ...

Страница 85: ...4 8V U11 330343 IC LM317LZ U12 380013 IC MAR 2 MONOLITHIC AMPLIFIER U13 380013 IC MAR 2 MONOLITHIC AMPLIFIER U14 330273 IC 74HC595 U15 330105 1 IC PRE MC12015 2 MOD U2 330417 IC NE602AN U3 380011 IC MAR 6 RF AMP MICRO X U4 330639 IC MB87086APF PLL SYN SOIC16 U5 330368 IC MC33078 U6 330471 IC MAX680 U7 330418 IC STEL 1179 NCO U8 ADAPTERBD2 ADAPTER ASSY 330470 U9 330015 IC VREG 7805 TO220 5V XL13 49...

Страница 86: ...sample the transmit RF signal and send indications of both powers back to the Reference Control board for use in the ALC circuitry Although both transmit and receive RF pass through this board it is only used to process signals in the transmit path Figure 4 10 VSWR Detector Board Block Diagram Reflected Power Dectector Forward Power Dectector Antenna RF In Out RVSPWR GRD FWDPWR Connector J19 Descr...

Страница 87: ......

Страница 88: ...4 Technical Description VSWR Detector Board 4 42 TW7000MS Figure 4 11 VSWR Detector Board Component Locations 738293 Rev F ...

Страница 89: ...3 100 1 4W R4 100 1 4W R5 47K 1 4W R6 1K 1 4W R7 1K 1 4W C1 001 C2 001 C3 DNP C4 DNP D1 1N4148 D2 1N4148 1T 9T 9T 1T T1 1 2 3 J2 1 2 3 4 5 ANTENNA C TW7000 275 REV AND REDRAWN BS 5 25 97 5 25 97 SAYLES D ECO 05 0457 C1 C4 was 01 RB 01 12 06 1 INDUCTANCE IS IN MICROHENRYS 2 DIODES ARE 1N4148 3 CAPACITANCE IS IN MICROFARADS 4 RESISTANCE IS IN OHMS 1 8W NOTES UNLESS OTHERWISE SPECIFIED Figure 4 12 VS...

Страница 90: ...AP C 001UF 100V 5 N RA 1SP D1 320002 DIODE 1N4148 1N4150 DO 35 D2 320002 DIODE 1N4148 1N4150 DO 35 J19 610285 HEADER PIN 1X3 MLX 0 1 W LOCK R1 134101 RES 100 OHM 1 2W 5 FILM R2 134101 RES 100 OHM 1 2W 5 FILM R3 124101 RES 100 OHM 1 4W 5 CF R4 124101 RES 100 OHM 1 4W 5 CF R5 124473 RES 47K 1 4W 5 CARBON FILM R6 113102 RES 1K 1 8W 5 CF R7 113102 RES 1K 1 8W 5 CF T1 459316 XFMR ASSY 9T 9T 30 1 490061...

Страница 91: ...board is shown below It contains the seven harmonic filters the receive transmit relay and the receive overload protection circuit Connections to the rest of the radio are shown in the table below Connector J22 Description Comment 1 2 Ground 3 4 12V input 5 FB7 Filter band 7 select line 6 FLTTST RF filter BITE line 7 FB3 Filter band 3 select line 9 FB4 Filter band 4 select line 10 TRSW T R relay c...

Страница 92: ...49999 MHz BND 4 Filter 6 25 to 8 999999 MHz BND 5 Filter 9 0 to 13 499999 MHz BND 2 Filter 2 75 to 3 999999 MHz BND 6 Filter 13 5 to 20 99999 MHz BND 1 Filter ANTRF J50 T R Relay RX Overload Detector Relay Driver Filter Band Switch Circuits J22 14 J22 12 J22 13 J22 11 J22 9 J22 7 J22 5 J22 8 J22 6 J22 14 J52 J51 TXRFHI RXRF FLTTST TRSW FB7 FB6 FB5 FB4 FB3 FB2 FB1 ...

Страница 93: ...4 Technical Description RF Filter Board 4 48 TW7000MS Figure 4 14 RF Filter Board Component Locations 738228 Rev K ...

Страница 94: ... 1uF L33 BEAD C82 0 1uF C83 0 1uF L34 BEAD 2 9 K9A C85 0 1uF C84 0 1uF 2 9 K8A C75 0 1uF C74 0 1uF L31 BEAD C76 0 1uF C77 0 1uF L32 BEAD 2 9 K7A C79 0 1uF C78 0 1uF 2 9 K6A C69 0 1uF C68 0 1uF L29 BEAD C70 0 1uF C71 0 1uF L30 BEAD 2 9 K5A C73 0 1uF C72 0 1uF 2 9 K4A C63 0 1uF C62 0 1uF L27 BEAD C64 0 1uF C65 0 1uF L28 BEAD 2 9 K3A C67 0 1uF C66 0 1uF 2 9 K2A C57 0 1uF C56 0 1uF L25 BEAD C58 0 1uF ...

Страница 95: ...CAP 200PF DM19 MICA C16 220390 CAP 39PF DM15 MICA C17 220431 CAP 430PF DM15 MICA C18 224181 CAP 180PF 5 DM19 MICA C19 224391 CAP 390PF DM19 MICA C2 220120 CAP 12PF DM15 MICA C20 220151 CAP 150PF DM15 MICA C21 224131 CAP 130PF DM19 MICA C22 220151 CAP 150PF DM15 MICA C23 220270 CAP 27PF 5 DM15 MICA C24 224301 CAP 300PF DM19 MICA C25 224131 CAP 130PF DM19 MICA C26 224271 CAP 270PF 5 DM19 MICA C27 22...

Страница 96: ...0PF DM15 MICA C55 021104000 CAP 0 1UF X7R 25V 5 0805 C56 021104000 CAP 0 1UF X7R 25V 5 0805 C57 021104000 CAP 0 1UF X7R 25V 5 0805 C58 021104000 CAP 0 1UF X7R 25V 5 0805 C59 021104000 CAP 0 1UF X7R 25V 5 0805 C6 220390 CAP 39PF DM15 MICA C60 021104000 CAP 0 1UF X7R 25V 5 0805 C61 021104000 CAP 0 1UF X7R 25V 5 0805 C62 021104000 CAP 0 1UF X7R 25V 5 0805 C63 021104000 CAP 0 1UF X7R 25V 5 0805 C64 02...

Страница 97: ...4000 CAP 0 1UF X7R 25V 5 0805 C84 021104000 CAP 0 1UF X7R 25V 5 0805 C85 021104000 CAP 0 1UF X7R 25V 5 0805 C86 021104000 CAP 0 1UF X7R 25V 5 0805 C87 021104000 CAP 0 1UF X7R 25V 5 0805 C88 021104000 CAP 0 1UF X7R 25V 5 0805 C89 021104000 CAP 0 1UF X7R 25V 5 0805 C9 220560 CAP 56PF DM15 MICA C90 021104000 CAP 0 1UF X7R 25V 5 0805 C91 021104000 CAP 0 1UF X7R 25V 5 0805 C92 021104000 CAP 0 1UF X7R 2...

Страница 98: ...CB MOUNT K14 540077 RELAY SP PCB MOUNT K15 540080 RELAY DPDT 2 AMP SEALED K16 540080 RELAY DPDT 2 AMP SEALED K2 540077 RELAY SP PCB MOUNT K3 540077 RELAY SP PCB MOUNT K4 540077 RELAY SP PCB MOUNT K5 540077 RELAY SP PCB MOUNT K6 540077 RELAY SP PCB MOUNT K7 540077 RELAY SP PCB MOUNT K8 540077 RELAY SP PCB MOUNT K9 540077 RELAY SP PCB MOUNT L1 459325 IND ASSY 10T 20 1 490006 L10 451122 IND ASSY 8T 2...

Страница 99: ... Z 120 1206 L32 045000001 BEAD FERRITE Z 120 1206 L33 045000001 BEAD FERRITE Z 120 1206 L34 045000001 BEAD FERRITE Z 120 1206 L35 045000001 BEAD FERRITE Z 120 1206 L36 045000001 BEAD FERRITE Z 120 1206 L37 045000001 BEAD FERRITE Z 120 1206 L38 045000001 BEAD FERRITE Z 120 1206 L39 045000001 BEAD FERRITE Z 120 1206 L4 459134 IND ASSY 10T 22 AWG 1 490008 L40 045000001 BEAD FERRITE Z 120 1206 L41 045...

Страница 100: ...ES 100 OHM 1 8W 1 TK 0805 R2 013683000 RES SM CF 68K 0 1W 5 0805 R3 013103002 RES SM TK 10K 1 1 8W 0805 R4 019222002 RES SM 2 2K 1 2W 5 2010 R5 019222002 RES SM 2 2K 1 2W 5 2010 R6 013103002 RES SM TK 10K 1 1 8W 0805 R7 013102002 RES 1K OHM 1 8W 1 TK 0805 R8 013103002 RES SM TK 10K 1 1 8W 0805 R9 013102002 RES 1K OHM 1 8W 1 TK 0805 U1 033304061 IC SM LIN COMPAR DUAL LM2903MX Table 4 8 RF Filter Bo...

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