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Servicing

4-1

SECTION 4: SERVICING

General

Detailed servicing information is beyond the scope of this manual and
only experienced personnel should make adjustments or attempt any
serious service work. Reference to the TW7000 HF Transceiver Tech-
nical Manual (TW7000-MS) is essential.

The TW7000 is of modular construction. If spare boards are available,
non-technical personnel are able to repair most faults in the field. It is
strongly recommended that non-technical personnel receive instruc-
tion from experienced technicians in the replacement of boards.

The TW7000 has a BITE system that aids in troubleshooting down to
the individual board level. When a fault occurs, a BITE fault message
displays indicating the specific board affected. The BITE runs auto-
matically on power up or whenever Alpha 20 is entered.

Routine Maintenance

The TW7000 normally requires no periodic maintenance except to
check the calibration of the master oscillator. It is often convenient to
program an unused channel to a known frequency standard such as
WWV (radiates 10,000W on 5, 10, and 15 MHz). This enables regular
checks of the frequency calibration.

The exterior of the TW7000 should be kept clean by wiping it with a
damp cloth and polishing it with a soft dry cloth. All knobs should be
secure and connectors tight. When the TW7000 is opened, coaxial
connectors should be tight and board connectors firmly in place. Any
dirt or dust should be removed using compressed air.

Board Access and Replacement

The top and bottom covers are each retained by six screws. After
removal of the retaining screws, the covers can be lifted off the
TW7000. For board locations,

refer to the Board Locations section on

page 4-2.

CAUTION: When the transmitter is operating, high RF voltages
are present on the power amplifier and filter boards. Use caution
as these RF voltages can cause burns.

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Содержание TW7000

Страница 1: ...CEIVER OPERATOR MANUAL Datron World Communications Inc 3030 Enterprise Court Manual Part No TW7000 MSOP Vista CA 92083 U S A Release Date June 2001 Phone 760 597 1500 Fax 760 597 1510 Revision F E mail sales dtwc com www dtwc com ...

Страница 2: ......

Страница 3: ...strate 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 immedi ately return all original Software documentation and any copies of each to Datron This Software is licensed AS IS and Datron provides a warranty that covers the media upon which the Software is embedded for a period of ...

Страница 4: ...ipment 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 damage...

Страница 5: ... Power 2 1 Antenna Connection 2 2 Microphone Audio Connection 2 2 Accessory Connections 2 3 Accessory Connector 1 Pinouts 2 3 Accessory Connector 2 Pinouts 2 4 Accessory Connector 3 Pinouts 2 5 Power Cabling Accessories 2 10 RF Cabling Accessories 2 11 Control Cabling Accessories 2 12 Remote Control 2 13 TW7000 Back Panel 2 15 Section 3 Operation Powering the TW7000 3 1 TW7000 Front Panel 3 1 Knob...

Страница 6: ...l 3 20 Placing a TransAdapt Transcall or Selcall 3 21 Activating the Noise Blanker 3 24 Activating Voice Enhancement 3 24 Activating Encryption 3 24 Section 4 Servicing General 4 1 Routine Maintenance 4 1 Board Access and Replacement 4 1 Board Locations 4 2 Field Level Servicing 4 2 ...

Страница 7: ...tom LCD is used to provide channel and frequency data feedback on other front panel control functions BITE informa tion and order wire text messages The TW7000 has continuous tun ing and up to 1000 memory channels that can be arranged in multiple scan groups It has simplex and half duplex capability and a full alphanumeric keypad for frequency or text entry Scope This manual describes the TW7000 i...

Страница 8: ...ernal computer utilizing a wide variety of interface stan dards including RS232 422 and 485 TW7000 audio accessories include a heavy duty hand microphone a dynamic desk microphone a Morse key and headphones Table 1 1 TW7000 Technical Specifications Characteristic Specification General Frequency Range 1 6 to 30 MHz for TX 1 30 MHz for RX Channel Spacing 10 Hz standard Channels 256 standard expandab...

Страница 9: ...ected against antenna mismatch including open and short circuit Receiver Frequency 100 kHz to 30 MHz Clarifier Digital 600 Hz in 10 Hz steps Receiver Protection Can withstand 43 dBm input without damage Sensitivity 10 dB SINAD min for 0 5 µV input 2 30 MHz IF Rejection 80 dB Selectivity SSB 300 to 2700 Hz at 3 dB Attenuator 20 dB switchable Audio 5W into 4 ohm High level Audio 0 dBm into 600 ohm A...

Страница 10: ...tion Kit to be added for co sited operation Note The TW5830 requires the radio have both the TW7000PP and the TW5830INST The TW7000 cannot be upgraded to a TW7000PP in the field TW7000RF The TW7000RF is designed for long distance beyond 2 km remote only control The standard front panel is replaced with a blank front panel An internal modem card 7000RF is installed For full function FSK remote cont...

Страница 11: ...rt per mil lion frequency stability 7000NB Impulse type noise blanker used in high voice environ ments 7000RCDR Combines receive and transmit audio and routes them to Accessory 2 7000RF Internal modem allows remote contact from the TW7201F FSK controller 7000RI Internal modem allows remote contact from the TW7201I ISDN controller 7000RS Modem interface board configures a second serial port RS422 4...

Страница 12: ... Press C 041 and E Display CH FREQ 041 13 330 000 MHz RX 2 Press ALPHA and 17 3 Press STATUS Referenced Manuals TW7000 HF Transceiver Technical Manual TW7000 MS 7000ALE Radio Control Program Operator Manual 7000ALE MSOP 7000 Series High Level Encryption Operator Manual 7000ENCR MSOP TW7201I ISDN Remote Control Head Technical Manual TW7201I MS TW7201F FSK Remote Control Head Technical Manual TW7201...

Страница 13: ...Note Supply adequate ventilation around the back of the TW7000 to allow for proper air flow Vehicular or Marine Mobile mounts should be used to mount the transceiver On occasion it may be necessary to fabricate special supplementary brackets to complement a particular vehicle or shipboard location DWC offers rack mobile and shock mount kits for the TW7000 suitable for most installations Input Powe...

Страница 14: ...n be connected directly to this out put while high power amplifiers and antenna tuners use DWC spe cially designed 50 ohm cables For specific connections refer to the RF Cabling Accessories figure on page 2 11 Microphone Audio Connection Low level audio accessories for use with the TW7000 include the fol lowing Two 6 pin microphone connectors are provided on the front panel of the TW7000 The two c...

Страница 15: ...n the back panel each with dif ferent pin assignments If multiple accessories are required that share one or more of the accessory connectors an external accessory com biner box TW7000IOX can be attached to any of these connectors All of the connectors on the back panel are a D submini socket with 25 pins For the location of these connectors refer to the TW7000 Back Panel figure on page 2 15 Pin N...

Страница 16: ...acknowledge 25 DI OSEL Table 2 2 Accessory Connector 2 Pinouts Pin Number Description 1 Ground 2 Ground 3 PWRON 4 ATUINIT tune initiate 5 ATUKEY tuner key line 6 BALRXA1 balanced RX audio 7 BALRXA2 balanced RX audio 8 BALTXA1 balanced TX audio 9 BALTXA2 balanced TX audio 10 AUXPTT 11 COM2RXD COM2 RX data 12 COM2TXD COM2 TX data Table 2 1 Accessory Connector 1 Pinouts Pin Number Description ...

Страница 17: ... Connector 3 Pinouts Pin Number Description 1 Ground 2 Ground 3 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 1...

Страница 18: ...used with the trans ceiver and connected to Accessory 1 or Accessory 2 using the follow ing pins 16 KBCLK keyboard clock 17 KBRXD keyboard RX data 18 KBTXD keyboard TX data 19 ATURX tuner RX data 20 ATUTX tuner TX data 21 ATUSP1 22 ATUSP2 23 ATUSP3 24 12V ACC 25 12V ACC Pin Number Description 1 Ground 6 BALRXA1 balanced RX audio 7 BALRXA2 balanced RX audio 8 BALTXA1 balanced TX audio 9 BALTXA2 bal...

Страница 19: ...ed protocol so the appropriate interface chip is inserted into the processor Pins used on Accessory 1 are as follows Automatic Antenna Tuners The TW7000 interfaces with the complete line of DWC automatic antenna tuners This includes the older AT RAT100 and RAT1000 as well as the newer AT RAT7000B The AT RAT100 and RAT1000 tuners must be connected to Acces sory 2 using the following pins Pin Number...

Страница 20: ...e initiate 5 ATUKEY 16 ACHKTUNE tuner check tune 17 ADATA tuner data 18 ACLOCK tuner clock 19 ASTROBE tuner strobe 24 12V ACC 1 8A peak Pin Number Description 14 Ground 15 Ground 19 ATURX tuner RX data 20 ATURX tuner RX data 24 12V ACC 25 12V ACC 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...

Страница 21: ...sed on Accessory 1 are as follows ALE Transcall Selcall Alarm The external ALE Transcall Selcall alarm driver is available on Acces sory 2 using the following pins Pin Number Description 1 Ground 11 Select 12 Busy 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 Pin Number Description 14 Ground 20 TC SCALM alarm ...

Страница 22: ...10 5850 5880 TELEPHONE COUPLER AW7 WHIP ANTENNA BROADBAND ANTENNA TW7000 TRANSCEIVER TWPP PORTABLE POWER SOURCE No AC for 5850 C991938 C991830 C991890 PF7000 HEAVY DUTY VOICE FSK POWER SUPPLY 12VDC POWER SOURCE PS1000SWA PF3000 VOICE CW POWER SUPPLY C991829 C991879 For FSK ISDN CONNECTS ONLY TO THE TW7000E REMOTE CONTROL TW7201E DM MICROPHONE REMOTE CONTROL C991829 ...

Страница 23: ...0 TRANSCEIVER TW110A HIGH SPEED MODEM 115 230 VAC 50 60 Hz TW5300 DATA MODEM TW1000B AMPLIFIER BROADBAND ANTENNA BROADBAND ANTENNA C991539 C991526 C991539 TW500B AMPLIFIER SO1 BROADBAND ANTENNA RF OUT AT7000B ANTENNA TUNER C991559 C991526 RAT1000 ANTENNA TUNER RA PAS ANTENNA ...

Страница 24: ...SCEIVER TW110A HIGH SPEED MODEM 115 230 VAC 50 60 Hz TW5300 DATA MODEM 12 Vdc TW500B AMPLIFIER C992143 C991897 for TW5810 C992094 for TW5850 C991965 for TW5880 TW5810 5850 5880 TELEPHONE COUPLER STANDARD PC or LAPTOP COMPUTER No AC for 5850 C992307 TW5300 MODEM Radio Data DC DM MICROPHONE REMOTE CONTROL TW7201E DM MICROPHONE REMOTE CONTROL RAT1000 ANTENNA TUNER ...

Страница 25: ... remotely from a standard computer using Accessory 1 on the back panel A custom software program is available from DWC that runs on any PC using Windows For the connections to use refer to the EIA Data Interface Standards section on page 2 7 Pin Number Description 14 Ground 22 EXTSPKR speaker audio Pin Number Description 1 Ground 2 Ground 3 FILTG 4 AMPALC external amplifier ALC line 5 AMPPTT 6 FLT...

Страница 26: ...1F uses FSK and can be used for long range remote requirements the TW7201I uses ISDN and is used for real time control up to 2 km These modem based remote control units are connected to the TW7000 via the remote connector on the back panel This connector is a D submini socket with 9 pins For a complete description of each of these pins refer to the TW7201F FSK Remote Control Head Technical Manual ...

Страница 27: ...Installation 2 15 Figure 2 4 TW7000 Back Panel ...

Страница 28: ...2 16 Remote Control This page intentionally left blank ...

Страница 29: ...ersion level The BITE system runs automatically and verifies that the boards are functional Display TW7000 MODULES The BITE system searches for any installed options After verifying installed options are installed the options display as well as the chan nel number in the upper left corner the channel frequency in the upper center and the clarifier offset if any below the frequency Figure 3 1 TW700...

Страница 30: ...s continuous rotation and provides a maximum of 600 Hz and 600 Hz offset in 10 Hz steps This value is shown on the right side of the display and can be nulled by manually turning the knob until the offset reads 000 Hz or by pressing the knob off With the clarifier off no clarifier information displays Pressing the knob a sec ond time restores the previous offset and refreshes the display Keypad Th...

Страница 31: ...description refer to the Plac ing an ALE Call section on page 3 20 Alpha Button Immediately to the right of the display are five buttons The ALPHA button is the fourth from the top Pressing it allows access to the Alpha menu To exit the menu press ALPHA again Mode Buttons An operational mode is selected by pressing the MODE buttons located beneath the mode icon on the lower left side of the displa...

Страница 32: ...mation refer to the Scanning section on page 3 18 RX Attenuator Button The ATT button changes the status of the input receiver attenuator from ON 20 dB input RX pad to OFF or vice versa Squelch Button The SQ button changes the status of the squelch circuit from ON to OFF or vice versa In the ON setting background noise is muted External RF Amplifier Button The EXT AMP button provides push to talk ...

Страница 33: ...n option is installed inside the TW7000 a corresponding icon is shown on the left side of display area The icon and the option s current status ON or OFF displays permanently To change the status of an installed option 1 Press the OPTION or STATUS button The icon of the last entered option flashes 2 If a different option is desired press the OPTION button until the desired icon flashes 3 Press the...

Страница 34: ...L M or H 3 Press ALPHA 5 and E Display RF POWER HI SET xxx if changed to high power 4 CW key the TW7000 and scroll to the power level indicated on the power meter 5 When the desired power level is achieved press E 6 Adjust the other two levels in the same manner 7 To exit this mode press E twice Priority Channel The PRI button adjusts the TW7000 to a channel defined as the prior ity channel The de...

Страница 35: ... of the corresponding func tion 2 To enter the function press E Once a function is selected and entered use the arrows on the keypad to scroll through the settings within that function When a desired set ting displays press E to accept the setting and return to the Alpha menu To exit a function without saving the changes press ALPHA To exit the Alpha menu press ALPHA again Table 3 1 Alpha Menu Fun...

Страница 36: ...TX operation 19 RF POWER ATU SET tune power set 20 BITE TEST INITIATED 21 OPTION 1 TYPE 22 COM 1 BAUD comport 1 configuration 23 COM 2 BAUD comport 2 configuration 24 BACKLITE OUT ON OFF 25 FREQ INC HZ frequency increment from 1 Hz 1 MHz 26 TEST REAR PANEL I O factory test 27 ENC PASSWORD Encryption menu 28 PTT TIMER SCC sets maximum PTT time 29 PRINTER 30 CLONE RADIO 31 GLOBAL POSITION SYSTEM not...

Страница 37: ... displays Every time ALPHA 6 and E are pressed the selec tion is toggled between ON and OFF If set to ON the mode select buttons are disabled 7 LOCKOUT prohibits changing any of the channel frequencies Every time ALPHA 7 and E are pressed the selection is toggled between ON and OFF If set to ON the mode select buttons are dis abled 8 RECEIVE SET Rx ONLY locks out the PTT on the displayed channel m...

Страница 38: ...enu allows for configuration of the ALE system For information about the ALE submenu and how the system is config ured refer to the ALE Submenu section on page 3 11 18 RECEIVE SET Rx Tx changes the displayed channel to an RX and TX channel Entering ALPHA 8 and E changes the setting back to an RX channel 19 RF POWER ATU SET controls the RF power level to be used during the tune cycle for an externa...

Страница 39: ... FX 80 compatible For more informa tion contact DWC 30 CLONE RADIO clones another transceiver by downloading all frequency and channel settings Enter 1 to clone and 2 to cancel clon ing Cloning requires interconnecting technology such as a modem line or microwave link 31 GLOBAL POSITION SYSTEM is not available 32 CW HOLD TIME sets the continuous wave CW hold time Enter the number in msec 33 SPLIT ...

Страница 40: ...tion Table 3 2 ALE Submenu Function Description 1 SCAN RATE 2 SCAN GRP scan group 3 TUNE GRP tune group 4 Rx SELCT tune select 5 SELF ADRS self address 6 SELF NAME 7 OTHR ADRS other address 8 OTHR NAME other name 9 MOD GRP modify scan group 10 SND SELCT sound select 11 SND ADRS sound address 12 SND LEN sound length 13 SND INT sound interval 14 CALL LIM call limit 15 SLF TMOUT self time out 16 OTR ...

Страница 41: ...or receive only Rx ONLY or 3 for channel setup CH Rx Tx of the 9000RAD or RC2 software 5 SELF ADRS selects an address number to review change or add for your station from 00 to 19 To enter a new self address enter the number To change an existing address scroll to the number and enter a new one 6 SELF NAME enters a new self address name for the address num ber selected in 5 SELF ADRS Any existing ...

Страница 42: ...ounding length is 5 or 10 seconds 13 SND INT sets the TW7000 to sound in time intervals from 1 minute to 24 hours 0001 to 1439 minutes 14 CALL LIM limits the number of attempts that can be made on each channel when trying to establish an ALE link 00 to 99 15 SLF TMOUT sets the length of time your transceiver remains linked after all outgoing messages are transmitted 000 600 in 15 sec ond intervals...

Страница 43: ...d in 23 MESSG OUT Any existing message displays briefly Use the alpha characters on the keypad to enter up to 90 characters 25 MESSG IN selects an incoming message for review from 0 to 9 Only 10 message can be stored When message 11 is received the oldest stored message is deleted 26 HANDSHAKE sets the message exchange compatibility with other radios Enter 1 for NO Tx or 2 for NO Rx 27 NET ADRS as...

Страница 44: ... Frequency to a Channel Acceptable transceiver frequencies range from 100000 MHz to 30 000000 MHz in the receive mode and 1 6 MHz to 30 000000 MHz in the transmit mode Simplex operation uses identical RX and TX frequencies and must be in the transmit mode range Semi duplex split frequency is entered as an RX frequency first and then as a TX frequency Out of range frequencies produce an error messa...

Страница 45: ...number and press E 2 Press F Display xx xxx xxx Rx 3 Enter the receive frequency and press E 4 Press F twice Display xx xxx xxx Tx 5 Enter the transmit frequency and press E The new channel fre quency displays 6 Press F to toggle between the receive and transmit frequencies Example To enter an RX frequency of 21 2 MHz and a TX frequency of 29 3 MHz on channel 041 1 Press C 041 and E Display CH FRE...

Страница 46: ...es without the worry of over writing a frequency on another channel This channel is defined as channel 000 Settings can then be copied to a fixed channel To copy the channel 000 data to another channel 1 Press C and enter the 3 digit channel number to indicate where data is to be stored 2 Press C and E This copies data from the manual channel to the new channel Data is retained in the manual chann...

Страница 47: ...ng a Scan Group Customizing a scan group involves reviewing the contents of a scan group adding and deleting channels from a scan group and selecting which of the channels in that group are to be scanned To customize a scan group 1 Press ALPHA 2 and E Display SCANSETCHANNELxNNN where x is the channel status and NNN is the 3 digit channel number Channels in a scan group are reviewed use the arrow b...

Страница 48: ...m munications traffic between stations in a network This section does not cover the ALE option in detail For detailed instruction on ALE operations refer to the 7000ALE Radio Control Program Operator Manual 7000ALE MSOP To initiate an ALE call 1 Press OPTION until the ALE icon flashes 2 Press STATUS to turn the option ON 3 Press CALL 4 Scroll to find the desired calling option THIS IS Creates a li...

Страница 49: ...g poor press CALL to terminate the link Press CALL again and select RE LINK Press CALL a third time and the TW7000 attempts the link again using the second best channel This can be repeated for subsequent channels until the link quality is acceptable Placing a TransAdapt Transcall or Selcall The TW7000 is capable of supporting the following selective call sys tems TransAdapt TA Selcall SC and Tran...

Страница 50: ...TATUS to turn the option ON 3 Press C and enter the channel from which to call Select the appropriate channel on the transceiver 4 Press CALL to initiate the call Display Tx ADDR xxx 5 Enter the Selcall code of the transceiver to call 001 255 A call to all channels Allcall is code 000 6 Press CALL again The TW7000 begins the call sequence If the call is successful a link alarm sounds Display SC LI...

Страница 51: ...anscall the receiving station also responds to a valid Selcall TransAdapt The TW7000 can be on a fixed channel or in scan mode If on a fixed channel TransAdapt operates the same as Selcall If in scan mode TransAdapt locates the first usable frequency not the best 1 Press OPTION until the TA icon flashes 2 Press STATUS to turn the option ON 3 Press SCAN 4 Press CALL to initiate the call 5 Enter the...

Страница 52: ... to remove man made interferences like ignition and power line noises To activate this option the appropriate icon must be turned on 1 Press OPTION until the OPT icon flashes 2 Press STATUS to turn the option ON 3 Press ALPHA 21 and E Display OPTION 1 TYPE x briefly displays last mode entered 4 Enter the mode 1 or 2 for this transceiver and press E Note To verify that the 7000VEM option has been i...

Страница 53: ...tenance The TW7000 normally requires no periodic maintenance except to check the calibration of the master oscillator It is often convenient to program an unused channel to a known frequency standard such as WWV radiates 10 000W on 5 10 and 15 MHz This enables regular checks of the frequency calibration The exterior of the TW7000 should be kept clean by wiping it with a damp cloth and polishing it...

Страница 54: ... is presented on the front panel display In a matter of min utes the radio can be opened up the faulty board removed and a new one inserted For detailed technical information refer to the TW7000 technical manual TW7000 MS Figure 4 1 Board Locations A L E F S K I S D N O P T 2 O P T 1 R e f C o n t r o l Front Panel Processor Power Supply RF Filter RF Amplifier N B P r o c e s s o r A u d i o S y n...

Страница 55: ...Power Supply 001 00600 Audio Board 001 00710 75 MHz IF Board 001 00800 5 MHz IF Board 001 00901 Synthesizer Board 001 01100 Processor Board 001 01200 Squelch Board Part Number Description TW7000TK Tool kit with card puller SMTRK Surface mount technology tool kit 7000EXT Extender board kit and card puller Part Number Description ...

Страница 56: ...4 4 Field Level Servicing This page intentionally left blank ...

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