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4: Theory of Operation

4-4

TW7201I-MS

Front Panel
Keypad

Pressing a key on the front panel Keypad asserts a row line that connects to
multiplexer U11 and a column line connected to muliplexer U12. These
muliplexers send a pulse to U12 pin 3 that stops the keypad oscillator U19C.
The oscillator drives counter U9 which scans the row and column lines. When
the keypad scanning stops, shift register U10 records the count at the point it
stops; this corresponds to a unique key. After reading the key, the processor
restarts the scanning loop by toggling U3 pin 7.

Configuration
Jumper Block

Jumper block J11 provides configuration settings for front panel functions.
Multiplexer U2 converts the parallel settings to serial data that the processor
reads at power up. Table 4-1 below lists the functions controlled by the J11
jumper block.

4.2.2
Switch Board

The Switch Matrix board attaches to the front panel and provides an interface
for the keypad alphanumeric keys.

4.2.3
Keypad

The Keypad attaches to the front panel and provides a way for the operator to
interface with the TW7000 transceiver through the TW7201I using
alphanumeric keys.

4.2.4
Display Board

The Display board attaches to the front panel and includes the LCD and
display drivers for the LCD. It also includes a serial to parallel driver that
takes serial transmit data in U3 and provides parallel data for the display bar
graph and other indicators.

The LCD is a high resolution back-lit alphanumeric display that provides
channel number, channel frequency, time, clarifier offset, mode and relative
signal strength/output power, as well as the status of available options. Two

Table 4-1 Jumper Block J11 Default Settings

Jumper

Function

Default

1

All function lockout

Off

2

Frequency change lockout

Off

3

Frequency display lockout

Off

4

Mode change lockout

Off

5

Power change lockout

Off

6

PTT lockout

Off

7

CW lockout

Off

8

TW7000 lockout

Off

9

Not assigned

Off

10

Not assigned

Off

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Содержание TW7201I

Страница 1: ... Head Operator Technical Manual Datron World Communications Inc Manual Part No TW7201I MS Release Date January 2008 Revision E 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: ...TW7201I MS i Change Description Date of Revision Revision Letter Description of Changes Pages Affected 01 08 E Change ISDN designation to DHSL All ...

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Страница 5: ...to demonstrate 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 p...

Страница 6: ...of 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 ...

Страница 7: ...2 3 Figure 2 4 AC Voltage Selector Card 2 4 Figure 2 5 DB9 Remote Connector Pinout 2 5 Figure 2 6 DB Accessory Connector Pinout 2 7 Table 2 3 ACC 1 Accessory Connector Pin Assignments 2 7 Table 2 4 ACC 2 Accessory Connector Pin Assignments 2 8 Chapter 3 Operation 3 1 Powering the TW7201I 3 1 Figure 3 1 TW7000 Front Panel 3 2 3 2 Using Knobs Buttons and Indicators 3 2 3 3 VSWR Feature 3 7 3 4 Using...

Страница 8: ...tic Diagram 994359 Rev E 5 11 Table 5 10 Front Panel Processor Board Parts List 001 03001 Rev E 5 13 Table 5 11 DHSL Modem J1 Pin Assignments 5 19 Table 5 12 DHSL Modem J2 Pin Assignments 5 20 Table 5 13 DHSL Modem J3 Pin Assignments 5 20 Table 5 14 DHSL Modem J4 Pin Assignment 5 20 Table 5 15 DHSL Modem J11 Pin Assignments 5 21 Table 5 16 DHSL Modem J12 Pin Assignments 5 22 Table 5 17 DHSL Modem ...

Страница 9: ...TW7201I MS vii Figure 5 7 Switching Board Component Locations 738195 Rev B 5 44 Figure 5 8 Switching Board Schematic Diagram 994149 Rev A 5 45 Table 5 29 Switch Board Parts List 001 00110 Rev A1 5 47 ...

Страница 10: ......

Страница 11: ...DHSL modem that communicates with its DHSL counterpart 7000RI modem option in the TW7000 F transceiver The TW7201I is microprocessor controlled and features one full duplex digitized voice channel and two full duplex data channels The TW7201I remote control head includes the following features Full remote control and operation of TW7000 series transceivers Dual front panel microphone jacks Front p...

Страница 12: ... output Input power AC DC 120 VAC or 240 VAC 13 8 Vdc Protection Fused for AC and DC overvoltage and reverse polarity Modem Format High speed slave modem MC145426 in remote head master modem MC145422 in transceiver Data 256 kHz modified differential phase shift burst Channels voice data One full duplex 64 kb second digitized voice channel Two full duplex 9600 baud data channels Remote interface 2 ...

Страница 13: ...n includes the DHSL Modem board and a dual UART chip and two jumpers that must be installed on the transceiver Processor board 1 3 3 TW7201I DHSL Remote Control The TW7201I includes a DHSL Modem board that communicates with the DHSL Modem board 7000RI option installed in the transceiver through a remote line using a high speed data packet format The information is compressed and sent between the m...

Страница 14: ...g accessories PM palm microphone for voice operation DM desk microphone for voice operation KEY CW key EPL lightweight headset TW7201MM mobile mounting kit TW7201RM rack mounting kit The TW7201I is supported with the following optional maintenance and service items TW7201I TK tool kit TW7201I MRK module repair kit TW7201I MK module kit TW7201I PSK spare parts kit 1 3 5 Accessory Equipment The TW72...

Страница 15: ...duction TW7201I MS 1 5 1 5 Referenced Manuals RC2 MSOP Radio Control 2 Operator Manual 7000ENCR MSOP 7000 Series High level Encryption Operator Manual 7000ALE MSOP 7000ALE Radio Control Program Operator Manual ...

Страница 16: ......

Страница 17: ... the transceiver The line connections are transformer coupled at each end The line length is limited by the time delay of the high speed packets as they travel from each end Datron offers the C992307 10m 33 ft DHSL interface cable Datron offers an unterminated remote cable C992309 for connecting to pre existing wiring system Two C992309 cables would be required one for the transceiver the other fo...

Страница 18: ...s have the correct mating connector Datron offers mating adapters for other low level audio accessories Table 2 1 Audio Devices Part Number Description DM Dynamic desk microphone PM Heavy duty hand microphone HP Headphones twin EP Headphones EPL Lightweight headphones KEY CW key Morse key Figure 2 1 TW7201I Front Panel Figure 2 2 Microphone Jack J9 and J10 Pinouts OPTIONS STATUS 1 2 3 4 7 5 8 0 6 ...

Страница 19: ...fuse 550014 The AC power voltage selector card must be configured for the intended power source The AC power is preconfigured for the AC power level in the area where it is shipped CAUTION Always verify the correct AC power setting on the AC voltage selector card before applying AC power To reconfigure the AC power setting 1 Move the clear plastic fuse cover to the left so that it covers the AC po...

Страница 20: ...cover the fuse holder Install the AC power cable into the AC power connector DC Power The TW7201I rear panel also includes a DC power connector and fuse holder The DC input circuitry is designed for 13 8 Vdc with a typical current requirement of approximately 300 mA The recommended DC voltage range is 12 Vdc to 16 Vdc An optional 2m 6 5 ft 3 conductor DC power cable is available C991829 One end of...

Страница 21: ...age 2 7and Table 2 4 on page 2 8 that support the following accessories External encryption devices Audio interface devices Data terminal equipment DTE External speaker Encryption Devices An external encryption device can connect to either connector ACC 1 or ACC 2 Audio Interface Devices Audio interface devices such as Datron s ACU1000 and ACU T can use either accessory connector DTEs The TW7201I ...

Страница 22: ...ough the Internet External Speaker The TW7201I includes a standard speaker mounted on the inside of the front panel An external loudspeaker can be added to the transceiver through the ACC 2 accessory connector Note If using the optional external speaker turn off the internal speaker push the SPKR button the status icon displayed on the LCD above the SPKR button should be set to OFF ...

Страница 23: ...io 1 7 BALRXA2 Balanced line receive audio 2 8 BALTXA1 Balanced line transmit audio 1 9 BALTXA2 Balanced line transmit audio 2 10 EXAUDPTT External audio PTT active low 11 NC No connection 12 NC No connection 13 12V ACC 12 Vdc supply for the accessory devices 14 EXTCWKEY External CW key 15 NC No connection 16 DCD Not used 17 FPWSP1 Front panel spare port not used 18 NC No connection 19 NC No conne...

Страница 24: ...line transmit audio 1 9 BALTXA2 Balanced line transmit audio 2 10 EXAUDPTT External audio PTT active low 11 NC No connection 12 NC No connection 13 12V ACC 12 Vdc supply for the accessory devices 14 GND Chassis ground 15 NC No connection 16 DCD Not used 17 NC No connection 18 NC No connection 19 NC No connection 20 TC SCALM Transcall Secall alarm 21 NC No connection 22 EXTSPKR External speaker aud...

Страница 25: ...rn the TW7201I and TW7000 or TW7000F on turn the PWR OFF VOL knob clockwise until an audible click is heard Power is off in the full counterclockwise position When the transceiver is turned on the LCD displays the software version level Display TW7000 VER 701xx where xx is the version level The BITE system runs automatically and verifies that the boards are functional Display TW7000 OK MODULES The...

Страница 26: ...l frequency to clarify the signal The knob has continuous rotation and provides a maximum of 600 Hz and 600 Hz offset in 10 Hz steps Turn the CLAR knob counterclockwise for negative offset and clockwise for positive offset USB mode The offset value is displayed on the right side of the LCD and is nulled by turning the knob until the offset reads 000 Hz or by pressing the knob off When the clarifie...

Страница 27: ...cketed button then 1 to enter character C Editing Text To enter a space press any bracketed button then 0 To delete a character use the left and right arrows to position the cursor then press the C button All trailing characters move to the left Menu Navigation To scroll through the menu selections use the up and down arrow buttons These arrows convert to left and right scrolling when editing in t...

Страница 28: ...lacing ALE calls refer to Section 3 7 Placing an ALE Call on page 3 22 For information on placing Transcall Selcall or TransAdapt calls refer to Section 3 8 Placing a TransAdapt Transcall or Selcall on page 3 23 External RF Amplifier The EXT AMP button transfers PTT control to an external amplifier connected to the TW7000 ACC 3 accessory connector 1 To automatically set and lock RF power in the H ...

Страница 29: ...n ALE call to the last station with an established link Press the SEND button to send an ALE call For a more detailed description refer to Section 3 7 Placing an ALE Call on page 3 22 Speaker The SPKR button switches the internal speaker on and off To mute the speaker press the SPKR button located beneath the SPKR icon on the lower right side of the display The status of the speaker ON or OFF is d...

Страница 30: ... the last entered option flashes 2 If you want a different option press OPTION until the desired icon flashes 3 Press STATUS to toggle between ON and OFF Note If you press a button other than OPTION and STATUS the icon stops flashing and the radio performs the function of that button The icon also stops flashing after a time out of 10 seconds USB LSB DATA FSK AGC time constants optional USB LSB wi...

Страница 31: ...odes USB LSB DATA are not available for selection unless the 5 MHz IF board includes the 7000WB1 or 7000CW options Note The VSWR feature requires that firmware 701AU or later version and Reference Control board 001 00206 are installed 3 4 Using Menus to Change Settings The TW7000 provides two menus for adjusting settings The Alpha menu is for changing settings specific to the 7000TC option Transca...

Страница 32: ...DDR TransAdapt Transcall Selcall receive address 14 TRANSADAPT BER NUM TA bit error rate 15 SCAN GROUP NUMBER for non ALE 16 TA TC SC Tx ADDR TransAdapt Transcall Selcall transmit address 17 ALE Submenu access to the ALE functions in Table 3 2 on page 3 13 18 RECEIVE SET Rx Tx activated TX operation 19 RF POWER ATU SET tune power set 20 BITE TEST INITIATED 21 OPTION 1 TYPE Voice Enhancement Modula...

Страница 33: ...PRIORITY CHANNEL For changing the number of the priority channel The default is channel 1 To change the priority channel 1 Press ALPHA 4 and E The existing priority channel is displayed 2 Enter the new priority channel number then press E The new priority channel number is displayed 3 Press the PRI button to set the new priority channel 5 RF POWER For changing RF power output settings of the TW700...

Страница 34: ... mode select buttons 8 RECEIVE SET Rx ONLY For making the displayed channel a receive only channel by locking out the PTT The status is automatically set to ON whenever you press ALPHA 8 Press ALPHA 18 TX to reverse the receive only state 9 SET CLOCK To set the internal clock if installed starting from the year down to the second Enter the year date hour minute and second pressing E after each val...

Страница 35: ...nformation about the ALE submenu and how the system is configured refer to Section ALE Submenu Descriptions on page 3 14 18 RECEIVE SET Rx Tx For automatically configuring the displayed channel to an RX and TX channel Entering ALPHA 8 changes the setting back to an RX channel 19 RF POWER ATU SET For entering an RF power to use during the tune cycle for an external automatic antenna tuner The defau...

Страница 36: ...tor Manual 7000ENCR MSOP 28 PTT TIMER For changing the internal PTT time out It can be set from one second to one hour Entering 0 sets it to OFF no time out The default is 300 seconds 29 PRINTER For automatically printing complete channel information for the TW7000 if connected to an external printer 30 CLONE RADIO For cloning another transceiver by downloading all frequency and channel settings 3...

Страница 37: ...FF 3 4 2 ALE Menu Table 3 2 ALE Submenu ALPHA 17 ALE 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 T...

Страница 38: ...and 5 channels per second The number to the left of the scan rate refers to option 1 two seconds per channel or option 2 five seconds per channel 2 SCAN GRP For selecting an ALE scan group from 0 to 9 This becomes the specified scan group when using 3 TUNE GRP and 9 MOD GRP 3 TUNE GRP For automatically tuning an ALE scan group from 0 to 9 This tunes all the channels in the selected scan group 4 Rx...

Страница 39: ...e an existing address number scroll to the number then enter a new one 8 OTHR NAME For entering a new or different name for the other address selected in 7 OTHR ADRS Any existing other address is briefly displayed 1 Use the alpha characters on the keypad to enter from 3 to 15 characters no spaces or punctuation 2 To delete a name enter three periods 9 MOD GRP For modifying or defining channels to ...

Страница 40: ...oggle between OFF and ON 19 LQA DECAY For entering the time period in which an LQA memory cell linearly decays from a state of perfect 30 to a state of dead 0 Selectable in periods of 0 1 2 4 or 8 hours 20 BER THRSD For entering the acceptable bit error rate threshold 00 to 48 for received ALE words A threshold of 00 allows for no errors a threshold of 48 is the maximum amount of allowable errors ...

Страница 41: ...d in 27 NET ADRS The address you last entered is briefly displayed 1 Use the alpha characters on the keypad to enter up to 15 characters 2 To delete a name enter three periods 29 NET SLOT For assigning network timing slots to stations for network call responses 01 to 16 Note You must set 27 NET ADRS and 28 NET NAME first 30 NET OTHER For indicating whether a station is part of the network 1 Scroll...

Страница 42: ...assign channels to scan groups Note Scan groups are defined by channel number not by frequency Changing the frequency of a channel also changes the frequency of that channel within each scan group 3 5 1 Selecting a Channel and Scrolling 1 Press C 2 Enter the desired 3 digit channel number 3 Press E The channel number with its frequency and the clarifier offset is displayed 4 Use the arrows on the ...

Страница 43: ...0 MHz to 8 572 000 MHz 1 Press C then press 041 then E Display CH FREQ 041 13 330 000 MHz Rx 2 Press F then press 8 572 then E Display CH FREQ 041 8 572 000 MHz Rx Entering a Semi duplex Frequency To select a channel and assign a new frequency 1 Press C then enter the 3 digit channel number 2 Press E then F Display xx xxx xxx Rx 3 Enter the receive frequency 4 Press F again Display xx xxx xxx Tx 5...

Страница 44: ...annel memory Note The default frequency increment is 100 Hz for scrolling To change this increment access ALPHA 25 Using the Manual Channel The manual channel allows you to create frequencies without worrying about overwriting a frequency on another channel This channel is defined as channel 000 Frequency settings on the manual channel can be copied to a fixed channel To copy the channel 000 data ...

Страница 45: ... This becomes the specified scan group when using menu functions 3 6 2 Customizing a Scan Group Customizing a scan group includes reviewing the contents of an existing scan group adding and deleting channels from a scan group and selecting the channels in that group to scan 1 Press ALPHA 2 2 Press E Display SCAN SET CHANNEL x NNN where x is the channel status and NNN is the 3 digit channel number ...

Страница 46: ...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 link exchanges messages and remains linked THIS WAS Creates a link ...

Страница 47: ...n a THIS IS call is poor 1 Press CALL immediately to end it 2 Press CALL again and select RE LINK 3 Press CALL a third time and the TW7000 tries the link again using the second best channel 4 Repeat this for subsequent channels until the link quality is acceptable 3 8 Placing a TransAdapt Transcall or Selcall The TW7000 is capable of supporting the following selective call systems TransAdapt TA Se...

Страница 48: ...SC icon flashes 2 Press STATUS to turn the option ON 3 Press C then enter the channel from which to call 4 Select the appropriate channel on the transceiver 5 Press CALL to initiate the call 6 Display Tx ADDR xxx 7 Enter the Selcall code of the transceiver to call 001 to 255 A call to all channels Allcall is code 000 8 Press CALL again The TW7000 begins the call sequence If the call is successful ...

Страница 49: ...receiving station also responds to a valid Selcall 3 8 4 TransAdapt The TW7000 can be on a fixed channel or in scan mode If it is set on a fixed channel TransAdapt operates the same as Selcall If used in scan mode TransAdapt locates the first usable frequency which may not be 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 initiat...

Страница 50: ...ption Operator Manual 7000ENCR MSOP 3 11 Activating Voice Enhancement The DSP based Voice Enhancement option 7000VEM suppresses various types of noise and interference on voice communications The 7000VEM has two modes of operation Mode 1 is for adaptive peaking and reduces atmospheric noise and static normal with HF signals Mode 2 adds the ability to remove man made interferences like ignition and...

Страница 51: ...m includes DHSL Modem board that consists of a master modem in the TW7000 transceiver and slave modem in the TW7201I remote control head connected by a DHSL interface cable C992307 4 1 TW7201I Assemblies The TW7201I consists of six board assemblies Front Panel Processor board Display board Switch board Keypad DHSL Modem board Power supply Interface board Figure 4 1 TW7201I Remote System 13 8VDC DC...

Страница 52: ...TE DRIVER KEYPAD BOARD SWITCH MATRIX SWITCH BOARD DISPLAY DRIVER DISPLAY DRIVER CUSTOM LCD LCD SERIAL DRIVER DISPLAY BOARD FRONT PANEL PROCESSOR BOARD DS1 12V 5V 1 2 12V UNREG J5 J6 J11 J3 J4 TC TA SC ALARM SQA TO DHSL MODEM BOARD INTERNAL SPEAKER 2 4 VOGAD U17 MIC INPUT MIC INPUT PRMICA VOLTAGE REG U15 11 12 CLAR 8 bit DATA BUS PROCESSOR CIRCUITRY U13 FPTCALM MIC AUDIO J7 1 2 3 4 5 C C C C R R R ...

Страница 53: ...d J10 pin 2 External Speaker and Alarm External speaker audio is routed to J1 pin 27 The external speaker output goes through the DHSL Modem board and Power Supply Interface board then out the ACC 2 accessory connector on the rear panel A separate call alarm buzzer DS1 alerts the operator of incoming calls and links transcall TC transadapt TA operation Wake up Circuitry The Front Panel Processor b...

Страница 54: ...rd attaches to the front panel and provides an interface for the keypad alphanumeric keys 4 2 3 Keypad The Keypad attaches to the front panel and provides a way for the operator to interface with the TW7000 transceiver through the TW7201I using alphanumeric keys 4 2 4 Display Board The Display board attaches to the front panel and includes the LCD and display drivers for the LCD It also includes a...

Страница 55: ...of transistors Q1 Q2 Q3 and U1 provides 12 Vdc at TP2 If the regulators fail zener diode D4 provides overvoltage protection Either the front panel PWR OFF VOL switch or the rear panel power line can activate the power switch relay K1 to provide 12 Vdc to the other boards Audio Interface Voltage regulator U3 provides 8 Vdc to operational amplifier U2B which supplies power 4 Vdc to op amp U2A U2C an...

Страница 56: ...dem Board The DHSL Modem board includes the following components DHSL modem IC 2 wire interface Codec IC Analog interface circuits Figure 4 3 Power Supply Interface Block Diagram U2C U2D J5 16 J6 11 13 J7 11 13 U2A J5 14 J6 15 17 J7 15 17 U2B J2 2 J2 3 ...

Страница 57: ...be used as a switch using Q6 as the output The input is set by the 3 pin header JU9 set to the BC position Codec The codec U11 is a voice digitization and reconstruction device In transmit mode the TW7201I uses the codec to digitize audio signals from the front panel microphone or an external transmit audio source connected to either of the rear panel accessory connectors U11 then sends this audio...

Страница 58: ...Q3 The codec U11 receives the transmit audio converts it to a digital information then sends it to DHSL modem U7 The modem transmits the digitized transmit audio along with control data to the transceiver through the 2 wire remote line Refer to Figure 4 4 on page 4 9 CW Oscillator The CW 1 kHz oscillator circuit is optimized for a short rise time Amplifier U15A and U15B make up a side tone oscilla...

Страница 59: ...Board Block Diagram Remote Head 12 VOLTS IN J2 2 J3 5 J3 6 BALANCED LINE TX AMPLIFIER U13A DATA IN J1 32 RX AMPLIFIER U13D PRMICA 250 mVpp typ J1 25 600TXA 2 Vpp typ J11 20 600RXA J11 21 RX AMPLIFIER U13C SQA J1 30 RX AMPLIFIER U15C CW KEY J1 13 DATA OUT J1 31 ...

Страница 60: ... board and the DC regulation and interface board Voltage regulators U14 5 Vdc U17 8 Vdc and U12 9 Vdc provide regulated power to the various circuits 4 4 2 BITE Circuitry The BITE circuit consists of transistors Q4 and Q5 The 5V supply keeps Q5 biased on whenever the DHSL Modem board has power If the DHSL Modem board loses power Q5 turns off and Q4 turns on active low to indicate a BITE failure to...

Страница 61: ...nd digital controls signals from the processor then transmits them to the TW7201I and vice versa 4 4 7 Transmit Path The 7000RI DHSL Modem board receives transmit audio from the Audio board on the ECRXA line through audio amplifier U13A and outputs it to the codec The codec digitizes the audio and sends it to the DHSL modem Along with control signals from the Processor board the modem sends the di...

Страница 62: ...Modem Board Block Diagram Transceiver 12 VOLTS IN J2 2 J12 19 J12 17 BALANCED LINE DATA IN J1 32 J11 13 J11 16 J11 4 SERIAL TO PARALLEL INTERFACE U1 RX AMPLIFIER U13D ECRXA J11 22 ECTXA J11 10 RX AMPLIFIER U13C BITE J11 17 DATA OUT J1 31 TX AMPLIFIER U13A ...

Страница 63: ... 1 provides the main functional subassemblies and their respective circuit boards and cable assemblies Table 5 1 TW7201I Subassemblies Subassemblies Description 001 03000 Front Panel Assembly 001 00110 Switch board 001 00120 LCD assembly 001 00130 Keypad 001 00141 Ribbon cable assembly 001 00142 Front panel software 001 03001 Front Panel Processor board 001 00150 Volume cable assembly 001 00161 Cl...

Страница 64: ...o disassemble the TW7201I disconnect cable assemblies and remove circuit boards To disassemble the TW7201I 1 Remove the screws from the top and bottom cover 2 Remove the two large screws from each side panel 3 To remove the DHSL Modem board disconnect connectors J1 J2 J3 J4 and J11 then remove the screws securing the DHSL Modem board to the front panel assembly 4 To remove the Power Supply Interfa...

Страница 65: ...nown frequency WWV for example and monitor the receive audio 4 Change to a channel with a clear frequency Push the PTT button on the microphone and speak into the microphone Receive audio should stop and the transceiver should transmit at the channel frequency 5 Connect the TW7201I to the TW7000 transceiver using the remote cable C992307 6 Turn the TW7201I on The transceiver should begin to update...

Страница 66: ...anel Note If the fuse is blown determine the reason and perform the necessary repairs before continuing with further testing 4 Verify the DC input voltage on the Power Supply Interface board at test points TP1 and TP2 is 12 Vdc 5 Check the PWR OFF VOL switch Ground the PWRON line to verify proper switch operation The relay on the Power Supply Interface board should activate 6 Measure the following...

Страница 67: ... for the audio signal at the audio amplifier output on the Front Panel Processor board U14 pin 4 6 Check for the audio at the speaker on the Front Panel Processor board J5 pin 2 5 2 4 Communication Between TW7201I and TW7000 If there is no communication between the TW7201I and the TW7000 transceiver 1 Verify the backlight and PWR OFF VOL switch are operational This indicates the Front Panel Proces...

Страница 68: ...drivers 6 PB6 Data line for display drivers 7 PB5 Data line for display drivers 8 PB4 Data line for display drivers 9 PB3 Data line for display drivers 10 PB2 Data line for display drivers 11 PB1 Data line for display drivers 12 PB0 Data line for display drivers 13 FPCWKEY CW key output to modem board turns on the CW oscillator 14 FPCWA Not used 15 FPWSPI Not used spare 16 FPPTT Output to modem bo...

Страница 69: ...m board 33 FPSP1 Not used 34 EXAUDPTT External audio PTT input from modem board active low Table 5 3 Front Panel Processor J3 Pin Assignments Pin Signal Description 1 PB0 Data line for display drivers 2 PB1 Data line for display drivers 3 PB2 Data line for display drivers 4 PB3 Data line for display drivers 5 PB4 Data line for display drivers 6 PB5 Data line for display drivers 7 PB6 Data line for...

Страница 70: ...sed 10 HEATER SW Heater switch 11 SENSE 1 Not used 12 CONTRAST Contrast adjust Table 5 5 Front Panel Processor J5 Pin Assignments Pin Signal Description 1 SPKR AUD Speaker audio 2 GND Chassis ground Table 5 6 Front Panel Processor J6 Pin Assignments Pin Signal Description 1 C0 Column matrix data 2 C1 Column matrix data 3 C2 Column matrix data 4 C3 Column matrix data 5 C4 Column matrix data 6 C5 Co...

Страница 71: ...trolled receive audio wiper of volume potentiometer 5 GND Chassis ground Table 5 8 Front Panel Processor J8 Pin Assignments Pin Signal Description 1 GND Chassis ground 2 CLCA Clarifier control A 3 CLCB Clarifier control B Table 5 9 Front Panel Processor J9 and J10 Pin Assignments Pin Signal Description 1 GND Chassis ground 2 RX AUDIO Receive audio 3 PTT Press to talk signal 4 TX AUDIO Transmit aud...

Страница 72: ... R69 R34 C43 TP1 L3 12 1 C67 C68 L6 D7 D8 D5 C31 C30 C66 R38 R37 R24 R16 D5 R11 R14 C29 C25 R36 C27 C24 R40 R46 DS1 C69 C70 C73 C71 C72 R56 R58 R29 U6 U5 D3 C64 R27 R25 C62 C28 R26 L11 C26 C32 C61 C63 C33 C35 C34 U15 U21 R55 R53 R52 R54 D4 D1 R10 R12 R62 R8 R7 U4 U1 C12 C13 C10 C75 R43 D10 R42 D9 C49 R28 R57 R45 R41 C23 OFF ON J11 RP1 U2 U3 U1 1 1 C1 C3 C2 R70 C77 1 12 C56 C58 U13 U16 Y1 J3 R1 1 1...

Страница 73: ...7 47K R17 C67 C82 L4 L1 1 3 4 5 6 J12 1 2 3 4 5 6 J10 1 2 3 4 5 6 J9 4 8 5 R26 1 2K C33 01 C35 001 C34 10 R27 470K 5V C24 2 2 C25 0 1 L11 C26 0 1 5V C29 10 C27 10 R24 1M C28 10 R25 33K C30 0 1 A 11 B 10 C 9 I O 3 INH 6 VEE 7 0 13 1 14 2 15 3 12 4 1 5 5 16 6 2 VSS 8 VDD 7 4 U11 4051 D1 1 2 3 U6A 4093 D3 D2 5V R11 47K C14 01 D12 D8 R14 47K 5V R15 470 1 4W 12V C68 01 R12 47K D4 5 6 4 U6B 4093 D6 D5 5...

Страница 74: ...UM C20 275104 CAP 0 1UF X7R 50V 10 0 1LS C22 210121 CAP 120 PF DISC NPO C23 241020 CAP 2 2MF DIP TANTALUM C24 241020 CAP 2 2MF DIP TANTALUM C25 275104 CAP 0 1UF X7R 50V 10 0 1LS C26 275104 CAP 0 1UF X7R 50V 10 0 1LS C27 241100 CAP 10MF DIP TANTALUM C28 241100 CAP 10MF DIP TANTALUM C29 241100 CAP 10MF DIP TANTALUM C3 241020 CAP 2 2MF DIP TANTALUM C30 214103 CAP C 0 01U 50 10 X RA 1SP C31 214103 CAP...

Страница 75: ...241100 CAP 10MF DIP TANTALUM C58 275104 CAP 0 1UF X7R 50V 10 0 1LS C59 275104 CAP 0 1UF X7R 50V 10 0 1LS C6 261600 CAP 6 50PF TRIMMER GREEN C60 231101 CAP 100U 16V 20 RADIAL 1SP C61 231471 CAP A 470UF 16V 20 RA 20SP C62 231101 CAP 100U 16V 20 RADIAL 1SP C63 275104 CAP 0 1UF X7R 50V 10 0 1LS C64 241020 CAP 2 2MF DIP TANTALUM C65 241020 CAP 2 2MF DIP TANTALUM C66 241020 CAP 2 2MF DIP TANTALUM C67 21...

Страница 76: ...3 320002 DIODE 1N4148 1N4150 DO 35 D4 320002 DIODE 1N4148 1N4150 DO 35 D5 320002 DIODE 1N4148 1N4150 DO 35 D6 320002 DIODE 1N4148 1N4150 DO 35 D7 320002 DIODE 1N4148 1N4150 DO 35 D8 320002 DIODE 1N4148 1N4150 DO 35 D9 320002 DIODE 1N4148 1N4150 DO 35 DS1 710104 BUZZER MICRO J1 620050 HEADER 34PIN RT ANGLE J10 610103 HEADER MLX 6PIN 100 J11 614017 HEADER 30 PIN MALE 3 X 10 J12 610103 HEADER MLX 6PI...

Страница 77: ...0057 XISTOR NPN PN2222A TO92 Q6 310057 XISTOR NPN PN2222A TO92 Q7 310033 XSTR J310 N JFET TO92 Q8 310033 XSTR J310 N JFET TO92 R1 113105 RES 1M 1 8W 5 CARBON FILM R10 113473 RES 47K 1 8W 5 CARBON FILM R11 113473 RES 47K 1 8W 5 CARBON FILM R12 113473 RES 47K 1 8W 5 CARBON FILM R13 113473 RES 47K 1 8W 5 CARBON FILM R133 113103 RES 10K 1 8W 5 CARBON FILM R14 113473 RES 47K 1 8W 5 CARBON FILM R15 1244...

Страница 78: ... 8W 5 CARBON FILM R43 113472 RES 4 7K 1 8W 5 CARBON FILM R45 113472 RES 4 7K 1 8W 5 CARBON FILM R46 113221 RES 220 OHM 1 8W 5 CF R47 124020 RES 2 2 OHM 1 4W 5 CF R48 124221 RES 220 OHM 1 4W 5 CF R49 124100 RES 10 OHM 1 4W 5 CARBON FILM R5 113473 RES 47K 1 8W 5 CARBON FILM R50 124101 RES 100 OHM 1 4W 5 CF R51 134470 RES 47 OHM 1 2W 5 CARBON FILM R52 113104 RES 100K 1 8W 5 CARBON FILM R53 113472 RES...

Страница 79: ...U1 330348 IC 74HC259N U10 330381 IC 74HC589 U11 330194 IC CD4051BE U12 330194 IC CD4051BE U13 001 00144 SOFTWARE TW7000 FPNL PROC U14 330043 IC TDA2002 H TO220 U15 330015 IC 7805 VREG 5V 1A 4 TO 220 U16 330341 IC VOLTAGE DETECTOR U17 330029 IC SL6270C VOGAD PREAMP DIP 8 U19 330342 IC MC14093BCP U2 330349 IC 74HC251N U3 330380 IC 74HC137 U4 330115 IC MC14528BCP U5 330130 IC MC14531 PARITY TREE DIP1...

Страница 80: ...input from fp processor 13 FPCWKEY CW key input turns on the CW oscillator 14 FPCWA Not used 15 FPSWP1 Not used spare 16 FPPTT Input from front panel processor that indicates a front panel PTT 17 FPSPITXD Serial peripheral interface transmit data 18 FPSPIRXD Serial peripheral interface receive data 19 FPSPICLK Serial peripheral interface clock 20 FPBITE BITE output to transceiver processor 21 ENA ...

Страница 81: ...gnments Pin Signal Description 1 GND Chassis ground 2 12V 12 Vdc to DHSL Modem board 3 PWRON Power on line to DHSL Modem board active low Table 5 13 DHSL Modem J3 Pin Assignments Pin Signal Description 1 REMRXA Not used 2 REMTXA Not used 3 GND Chassis ground 4 GND Chassis ground 5 DHSL1 DHSL modem line 1 6 DHSL2 DHSL modem line 2 Table 5 14 DHSL Modem J4 Pin Assignment Pin Signal Description 1 GND...

Страница 82: ...iver modem only 11 NC No connection 12 NC No connection 13 EN12 No connection 14 GND Chassis ground 15 12V No connection 16 SPITXD No connection 17 BITE No connection 18 RS232 1R RS 232 receive line to ACC 2 19 RS232 1T RS 232 transmit line to ACC 2 20 600TXA 600 ohm accessory transmit audio input from either accessory connector 21 600RXA 600 ohm accessory receive audio output to either accessory ...

Страница 83: ... SER1RXD Serial receive line to processor transceiver Handles control functions 11 SER2TXD Serial transmit line to processor transceiver Handles display data 12 SER2RXD Serial receive line to processor transceiver Handles display data 13 RMTTXD Not used on TW7201I 14 GND Chassis ground 15 REMTXA Not used on TW7201I 16 REMRXA Not used on TW7201I 17 DHSL2 DHSL remote line to TW7201I 18 REMSP Not use...

Страница 84: ...l Head Control Head JU3 BC JU11 Not used JU4 AB JU12 Not used JU5 AB JU13 BC JU6 AB JU14 BC JU7 AB S1 1 2 5 on 3 4 6 7 8 off JU8 BC JU9 AB U6 Not installed JU10 BC U7 Installed Transceiver master Transceiver master JU3 BC JU11 Not used JU4 BC JU12 Not used JU5 BC JU13 BC JU6 BC JU14 BC JU7 BC S1 1 2 5 on 3 4 6 7 8 off JU8 BC JU9 AB U6 Not installed JU10 BC U7 Installed ...

Страница 85: ...5 R57 R56 D6 D5 R11 R12 D3 D4 R10 R78 R77 D16 D15 R54 R53 R50 R52 R49 R60 R55 C14 C1 R2 R3 R1 R51 R76 D24 Q3 R45 R43 R41 R44 R42 D14 C41 C42 C40 R38 D13 R39 R40 C B A JU8 JU7 JU6 JU5 J11 C31 C29 C30 C27 C3 C26 C5 C8 R9 D1 D2 R22 R23 U12 C28 C44 C36 C71 C51 C66 U15 C37 C38 C35 R8 R7 R6 R5 R4 C68 Q7 C4 C9 C7 C6 SW1 C55 C52 C61 D17 R63 R64 R66 R65 R68 R70 C53 C54 C57 C56 C58 C59 C60 C67 R69 R72 R67 R...

Страница 86: ...TW7201I MS Figure 5 4 DHSL Modem Board Schematic Diagram 994184 Rev E 5 25 ...

Страница 87: ... DIP TANTALUM C24 241020 CAP 2 2MF DIP TANTALUM C25 241020 CAP 2 2MF DIP TANTALUM C26 241020 CAP 2 2MF DIP TANTALUM C27 241020 CAP 2 2MF DIP TANTALUM C28 275104 CAP 0 1UF X7R 50V 10 0 1LS C29 275104 CAP 0 1UF X7R 50V 10 0 1LS C3 241020 CAP 2 2MF DIP TANTALUM C30 241020 CAP 2 2MF DIP TANTALUM C31 241020 CAP 2 2MF DIP TANTALUM C32 275104 CAP 0 1UF X7R 50V 10 0 1LS C33 241100 CAP 10MF DIP TANTALUM C3...

Страница 88: ...CAP 0 015MF 100V MYLAR C58 275101 CAP ML NPO 100PF 100V 5 0 2S C6 241100 CAP 10MF DIP TANTALUM C60 275104 CAP 0 1UF X7R 50V 10 0 1LS C61 241020 CAP 2 2MF DIP TANTALUM C66 210102 CAP 001UF Y5P 50V 20 0 1LS C67 210102 CAP 001UF Y5P 50V 20 0 1LS C68 241020 CAP 2 2MF DIP TANTALUM C69 210102 CAP 001UF Y5P 50V 20 0 1LS C7 241020 CAP 2 2MF DIP TANTALUM C70 210102 CAP 001UF Y5P 50V 20 0 1LS C71 241100 CAP...

Страница 89: ...DIODE 1N4148 1N4150 DO 35 D4 320002 DIODE 1N4148 1N4150 DO 35 D5 320002 DIODE 1N4148 1N4150 DO 35 D6 320002 DIODE 1N4148 1N4150 DO 35 D7 320002 DIODE 1N4148 1N4150 DO 35 D8 320002 DIODE 1N4148 1N4150 DO 35 D9 320002 DIODE 1N4148 1N4150 DO 35 J1 620038 CONN HDR 2X17 SHROUDED PC MNT J11 613163 CONN DB 25 RT ANGLE PC PLUG J12 613163 CONN DB 25 RT ANGLE PC PLUG J2 610209 HEADER MLX 3PIN 156 POLAR J3 6...

Страница 90: ...1 8W 5 CARBON FILM R12 113474 RES 470K 1 8W 5 CARBON FILM R13 113472 RES 4 7K 1 8W 5 CARBON FILM R14 113472 RES 4 7K 1 8W 5 CARBON FILM R15 113221 RES 220 OHM 1 8W 5 CF R16 113221 RES 220 OHM 1 8W 5 CF R17 113102 RES 1K 1 8W 5 CF R18 113102 RES 1K 1 8W 5 CF R19 113106 RES 10M 1 8W 5 CARBON FILM R2 113101 RES 100 OHM 1 8W 5 CF R20 113472 RES 4 7K 1 8W 5 CARBON FILM R22 113103 RES 10K 1 8W 5 CARBON ...

Страница 91: ...0K 1 8W 5 CARBON FILM R44 113474 RES 470K 1 8W 5 CARBON FILM R45 113621 RES 620 OHM 1 8W 5 CF R46 113823 RES 82K 1 8W 5 CARBON FILM R47 113103 RES 10K 1 8W 5 CARBON FILM R48 113103 RES 10K 1 8W 5 CARBON FILM R49 113103 RES 10K 1 8W 5 CARBON FILM R5 113104 RES 100K 1 8W 5 CARBON FILM R50 113474 RES 470K 1 8W 5 CARBON FILM R51 1111502 RESISTOR 15K 1 8W 1 R52 113104 RES 100K 1 8W 5 CARBON FILM R53 11...

Страница 92: ... 8W 5 CARBON FILM R73 113272 RES 2 7K 1 8W 5 CARBON FILM R74 113473 RES 47K 1 8W 5 CARBON FILM R76 113104 RES 100K 1 8W 5 CARBON FILM R77 113104 RES 100K 1 8W 5 CARBON FILM R78 113104 RES 100K 1 8W 5 CARBON FILM R8 113104 RES 100K 1 8W 5 CARBON FILM R9 113104 RES 100K 1 8W 5 CARBON FILM S1 530010 SWITCH DIP 8 SECT SPST T1 410062 TRANSFORMER DHSL U1 330273 IC 74HC595 U10 330482 IC 4069 HEX INVERTER...

Страница 93: ...pply Interface Board J1 Pin Assignments Pin Signal Description 1 DC IN DC input line 12 Vdc to 28 Vdc 2 GND Chassis ground Table 5 20 Power Supply Interface Board J2 Pin Assignments Pin Signal Description 1 GND Chassis ground 2 12V 12 Vdc power line 3 PWR ON Power status active low Table 5 21 Power Supply Interface Board J3 Pin Assignments Pin Signal Description 1 AC IN AC input line 120 VAC to 24...

Страница 94: ...2 2T RS 232 transmit line to ACC 1 12 RS232 1T RS 232 transmit line to ACC 2 13 RS232 2R RS 232 receive line to ACC 1 14 600TXA 600 ohm accessory transmit audio input from either accessory connector 15 DCD Not used 16 600RXA 600 ohm accessory receive audio output to either accessory connector 17 CWKEY CW key line to ACC 1 18 ECRXA No connection 19 ECTXA No connection 20 EXAUPTT External audio PTT ...

Страница 95: ...Modem receive audio input to ACC 1 9 NC No connection 10 NC No connection 11 BALRXA1 Balanced receive line to ACC 1 12 NC No connection 13 BALRXA2 Balanced receive line to ACC 1 14 NC No connection 15 BALTXA1 Balanced transmit line from ACC 1 16 NC No connection 17 BALTXA2 Balanced transmit line from ACC 1 18 NC No connection 19 EXAUPTT External audio PTT input from ACC 1 connector active low 20 N...

Страница 96: ...receive line to ACC 2 12 NC No connection 13 BALRXA2 Balanced receive line to ACC 2 14 TC SC ALARM Transcall Selcall alarm to external speaker on ACC 2 15 BALTXA1 Balanced transmit line from ACC 2 16 NC No connection 17 BALTXA2 Balanced transmit line from ACC 2 18 EXTSPKR Speaker audio to external speaker to ACC 2 connector 19 EXAUPTT External audio PTT input from ACC 2 connector active low 20 NC ...

Страница 97: ... Chassis ground 2 DHSL2 DHSL remote line to transceiver 3 12V 12 Vdc strapped to pin 5 4 REMRXA Not used on TW7201I 5 12V 12 Vdc 6 REMTXA Not used on TW7201I 7 REMSP No connection 8 PWR ON Power status line active low 9 DHSL1 DHSL remote line to transceiver 10 NC No connection Table 5 27 Power Supply Interface Board J10 Pin Assignments Pin Signal Description 1 REMRXA Not used on TW7201I 2 REMTXA N...

Страница 98: ...K1 C2 J10 C31 C29 R29 R22 C30 C26 R27 R19 C16 C17 R20 R21 R30 R14 R13 R9 J3 J1 FB D3 D2 C13 C11 C10 C12 C7 C8 Q2 C9 Q3 TP2 D4 D1 Q1 R2 R4 R1 R5 U1 BR1 TP1 R3 C3 C27 C28 R23 R28 R24 FB FB FB FB FB FB C19 C22 C23 C34 C15 FB FB FB FB FB FB FB C5 C1 R32 C32 C33 R33 R34 1 J9 R31 1 2 1 3 E B C 1 2 26 25 1 2 25 26 25 26 1 2 738277 REV B T1 P S ...

Страница 99: ...TW7201I MS Figure 5 6 Power Supply Interface Schematic Diagram 994222 Rev D 5 39 ...

Страница 100: ...C 1000P 100 10 X AX 25SP C2 241100 CAP 10MF DIP TANTALUM C22 277102 CAP C 1000P 100 10 X AX 25SP C23 277102 CAP C 1000P 100 10 X AX 25SP C26 241100 CAP 10MF DIP TANTALUM C27 277101 CAP C 100PF NPO AX 5 25SP C28 277101 CAP C 100PF NPO AX 5 25SP C29 241100 CAP 10MF DIP TANTALUM C3 277103 CAP C 0 01U 100 10 X AX 25SP C30 241100 CAP 10MF DIP TANTALUM C31 241100 CAP 10MF DIP TANTALUM C32 277102 CAP C 1...

Страница 101: ...10068 XISTOR PNP TIP36A TO218 Q2 310007 XISTOR PNP PN3638A TO92 Q3 310023 XISTOR NPN TIP31 TO220 R1 124682 RES 6 8K 1 4W 5 CARBON FILM R13 124100 RES 10 OHM 1 4W 5 CARBON FILM R14 124101 RES 100 OHM 1 4W 5 CF R18 124621 RES 620 OHM 1 4W 5 CF R19 170210 RES 100K 3 8 25T TRIMMER R2 124392 RES 3 9K 1 4W 5 CARBON FILM R20 124102 RES 1K 1 4W 5 CARBON FILM R21 124103 RES 10K 1 4W 5 CARBON FILM R22 17021...

Страница 102: ... 4W 5 CF R5 124103 RES 10K 1 4W 5 CARBON FILM R9 124100 RES 10 OHM 1 4W 5 CARBON FILM T1 410064 TRANSFORMER PWR 16VCT 0 7 AMP T2 410019 XFMR AUDIO MINI 600CT 600CT T3 410019 XFMR AUDIO MINI 600CT 600CT T4 410019 XFMR AUDIO MINI 600CT 600CT T5 410019 XFMR AUDIO MINI 600CT 600CT U1 330499 IC LM2931 5 VOLT REGULATOR U2 330322 IC MC33079 QUAD OP AMP DIP 14 U3 330018 IC VREG 78L08 TO94 8V Table 5 28 Po...

Страница 103: ...ting and Troubleshooting 5 44 TW7201I MS Figure 5 7 Switching Board Component Locations 738195 Rev B CALL EXTAMP SQLCH 738195 REV B S4 S10 S8 S14 S6 S12 S16 S3 S9 S5 S11 S7 S13 S15 S17 S18 S19 S20 S21 S2 S1 ...

Страница 104: ...TW7201I MS TW7201I MS Figure 5 8 Switching Board Schematic Diagram 994149 Rev A 5 45 ...

Страница 105: ... SPST PB S14 530105 SWITCH TW7000 NO SPST PB S15 530105 SWITCH TW7000 NO SPST PB S16 530105 SWITCH TW7000 NO SPST PB S17 530105 SWITCH TW7000 NO SPST PB S18 530105 SWITCH TW7000 NO SPST PB S19 530105 SWITCH TW7000 NO SPST PB S2 530105 SWITCH TW7000 NO SPST PB S20 530105 SWITCH TW7000 NO SPST PB S21 530105 SWITCH TW7000 NO SPST PB S3 530105 SWITCH TW7000 NO SPST PB S4 530105 SWITCH TW7000 NO SPST P...

Страница 106: ......

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