Hal Communications DXP38 Operator'S Manual Download

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Summary of Contents for DXP38

Page 1: ...DXP8 HF RADIO DSP MODEM OPERATOR S MANUAL HAL COMMUNIGATIONS P O BOX 365 URBANA lL 6 g03 0365 QUALITY COM M U N I CAIIOA S EQU I P M ENT...

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Page 3: ...HAL Communications Corp Urbana lllinois Printed in the United States of America Contents of this publication may not be reproduced in any form without the written permission of the copyright owner 87...

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Page 5: ...al Considerations When Operating CLOVER 2 11 2 5 1 Transmitter and Receiver Requirements 2 11 2 5 2 Receiver Tuning of CLOVER Il Signals 2 12 2 5 3 Transmit Modulation 2 12 2 5 4 Receiver AGC and Nois...

Page 6: ...17 3 16 Operating AMTOR 3 18 3 16 1 ControlOptions 3 18 3 16 2 ARQ Mode 3 18 3 16 3 FEC Mode 3 20 3 16 4 Listen mode 3 20 3 17 Operating P Mode 3 20 3 17 1 Control Options 3 20 3 17 2 ARQ Mode 3 21 3...

Page 7: ...4 10 5 LISTEN Mode 4 28 4 10 6 Test Mode 4 28 4 10 7 CLOVER Il Configuration Menu Parameters 4 29 4 11 Operating AMTOR 4 29 4 11 1 ARQ Mode 4 29 4 11 2 FEC Mode 4 33 4 11 3 LISTEN Mode 4 33 4 12 Oper...

Page 8: ...ences 3 13 Special RTTY Transmit Keys 3 14 Function HOT KEY Assignments 4 14 Alt letter HOT KEY Assignments 4 15 Transmit Buffer Edit Keys 4 19 RTTY Data Rates and Speeds 4 20 RTTY Control Options 4 2...

Page 9: ...eption which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving...

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Page 11: ...a thorough reading of Chapter 3 is in order after the new wears offl Our DOS based terminal program DXP38 EXE is also included for all that wish to continue using PC DOS This is the popular and proven...

Page 12: ...5 floppy disk drive 1 hard disk drive 1MB free space minimum Third Party Programs lf you will be using Third Party terminal programs with the DXP38 software not written by HAL carefully read the docum...

Page 13: ...1 Rev X 865 13820 DXP38 Disk 2 DXPWin 2 Rev X 865 13830 DXP38 Disk 3 DXPWin 3 Rev X 865 13840 DXP38 Disk 4 DXP38 EXE DXP38 LOD DXP38 S28 Rev x 310 16032 DC PowerConnector When opening the DXP38 shipp...

Page 14: ...put FSK Output SEL CAL Output DC Power Input RF Ground Data LIMITS 5V p p 30dBm 25 mV 50V 100 ma 50V 100 ma 50V 100 ma 9 18V 0 6A l 15 VDC t o Typical connections of the DXP38 to radio station equipme...

Page 15: ...IINAL AF IN I A l l r I I L Cl J DC P0VER SUPPLY 9 18V 0 6A ANTINNA o HF TRANSCfIVTR RX TX STOP AF AF SCAN NUT IN PTT FSK t PT G N D oo HAL Connunlcotlons Corp DXP38 DSP Moden Senlot No llod h IJSA AF...

Page 16: ...udio input Proper adjustment of the TX LVL control is discussed in section 2 3 MPORTANT CONSTDERATION WHEN USING CLOVER The DXP38 has an FSK Output that may be used for AMTOR P Mode and RTTY However t...

Page 17: ...8 EXE See Chapters 3 and 4 to access this parameter on the Configuration menu The factory default setting is to Normal polarity Some transceivers require a switch to ground on the FSK input In this ca...

Page 18: ...cognized the SEL CAL output shorts to ground low Options in DXPWin and DXP38 EXE allow selection of two modes to match switching requirements of various radio models The modes are CONTinuous and PULSE...

Page 19: ...hould be between 9 to 1B VDC Note that the positive terminal connects to the center pin The DXP38 requires approximately 250 ma during normal operations but reloading the flash memory requires approxi...

Page 20: ...the design of the Wattmeter circuit Some meters may show no difference others may show as much as a 4 1 6 dB difference The exact meter readings are not critical However it is very important that the...

Page 21: ...hows filter amplitudes when tuning CLOVER but each bar segment now shows the amplitude in the four CLOVER tone filters Optimum tuning is indicated when allfour bars have maximum length from the center...

Page 22: ...h 2 10 Prlnt Squetch Ve ry Low tle Low Connect A Littl e I CL VER_II Figure 2 4 Typical M S Mode Tuning Display Fc 50 Hz Fc 30 Hz Fc 0 Hz Fc 15 Hz Fc 10 Hz Fc 0 Hz Fc 10 Hz Figure 2 5 Typical Af Mode...

Page 23: ...ld be within 10 Hz to obtain top performance at the highest data rate modulation modes Therefore the radio equipment should be tunable in at least 10 Hz tuning increments and in finer increments if po...

Page 24: ...an audio waveform that must be connected to the audio input of an SSB transmitter CLOVER does not use the FSK transmitter feature of some HF transceivers Either USB or LSB may be used with CLOVER but...

Page 25: ...e amplitudes of the four tones will vary up and down showing the effect of selective fading The PBT should be set so that on average the four tone amplitudes are symmetrical 2 5 6 Receiver Audio Level...

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Page 27: ...XE Chapter 4 to verifi7 proper installation and set up lf you still have problems please consult Chapter 5 ln Case of Difficulty DXPWn provides access to all of the features and modes of the DXP38 How...

Page 28: ...you do not have to change the installation drrectory lf you wish to install to a different drive or directory click Browse You will be prompted to type a new direc tory and or drive location Vhen fin...

Page 29: ...he following manual conventions describe the method of pressing certain key presses 1 All user entered keystokes or mouse clicks are in BOLD print 2 Multi letter keytop labels are shown in IBRACKETS F...

Page 30: ...KEY FUNCTON KEY FUNCTION Alt A Date MARS Format Alt N Toggle NORM REV Alt B Send Time and Date Alt P Print Squelch Alt F Files Save Alt Q Send QBF Message Alt G Force Letters Alt R Select RTTY Rate A...

Page 31: ...uesting that you provide the correct COM Port setting for the DXP38 You may wish to save this setting in your configuration file see section 3 6 4 Configure Menu after DXP A in has found the DXP3B mod...

Page 32: ...mand closes the file immediately and no further information will be saved Data that is contained in the DXP AIn TX buffer will continue to be sent until the buffer is empty This may be a substantial a...

Page 33: ...text from the TX or RX buffers onto and from the A indows clipboard The standard windows hotkeys are used for operation 3 6 3 Code Menu The Code menu allows the user to easily switch between the diffe...

Page 34: ...N DO A S IS Y d 10 tt I Send H I deM nd de CALL l I CALL CQ 3 8 t t t r t Al l Link to I Start FEC Kiil Connection I N A Seno S r cUSen remote station Now I cw lD aessage 1 l tt Disconnect from Liste...

Page 35: ...you may choose to increase the size of the viewing area by hiding the tuning indi cator s ALn X 3 9 Echo on Transmit TX buffer The middle screen shows echo the echo on transmit buffer This allows the...

Page 36: ...lays are being viewed The data columns show Modutation Modulation mode BPSM through 16P4A Signal Noise Detects signal to noise ratio dB Frequency Tuning error 1 Hz increments PHS Phase dispersion in l...

Page 37: ...may also program RU Vho Are You from this menu screen Choose Save when finished HisCall and HisSelcall provide pull down lists by clicking the down arrow You may view the lists add to the list or dele...

Page 38: ...enabled condition actually has two states 1 lf you have pre yped text into the transmit buffer and the state is changed from disabled to enabled the transmitter is turned ON and text is sent at the c...

Page 39: ...ure when receiving text you may wish to turn USOS off when receiving strings of numbers particularly if the sending station does not send new FIGS characters frequently a frequent problem in military...

Page 40: ...key combinations are provided to send special RTTY characters Table 3 4 Default Settings KEY ICtrl 6 ALT Y CHARAC R Signal Bell LTRS FIGS 12 LTRS Diamond symbol on screen Only Baudot and TOR Only Baud...

Page 41: ...ight section of both tuning screens The data columns for each station show Modulation Modulation mode BPSM through 16P4A Signal Noise Detects signal to noise ratio dB Frequency Tuning error 1 Hz incre...

Page 42: ...n ARQ CQ call press Ctrl F9 Your station will respond by linking to the calling station and you will see the other station s call at the top of your screen lf a CQ CCB is received your transceiver is...

Page 43: ...selections of test tones Single Tone Test and Four Tone Test As discussed in Chapter 2 Test mode is used to set the transmit audio level Follow the procedures of sec tion 2 3 any time you alter the s...

Page 44: ...n may either acknowledge correct reception or request a repeat transmission This is sim ilar to CLOVER ll ARQ mode except that AMTOR cannot correct errors without repeat transmission and the AMTOR cod...

Page 45: ...tion to F7 except that all pending transmit data is abandoned and a disconnect request is issued immediately Use this key combination only if you need to get offthe air very quickly ARQ WRU Feature Th...

Page 46: ...ase insert ZZZZ at the end of the transmitted text The F7l key may be used to insert the ZZZZ sequence FEC may also use the panic kill hot key Ctrll F7 In this case pressing Gtrll F7 causes an imme di...

Page 47: ...ng Use it with care Even when a FORCED OVER is used any unsent text is preserved in the transmit buffer This text will be held and sent ahead of any additional pretyped text when your station is again...

Page 48: ...pecial startup as with AMTOR Once FEC mode is started you must use F7 to return to receive except as stated below FEC Return to STBY Mode In some cases it is desirable for the DXP38 to return to P Mod...

Page 49: ...without having to use DOS commands to change directories load programs etc A DOS Shell may in fact make it even simpler to run the DXP38 However a DOS Shell may also automatically load other programs...

Page 50: ...n DXP38 EXE software is run on your PC the following manual conventions will be used to describe which keys should be used 1 All user entered keystrokes are in BOLD print 2 lf a letter is to be typed...

Page 51: ...ed 1 2 3 4 Press Alt M Type in the call sign of your station Press Enter Be sure to save the configuration upon exiting the program 4 4 Main Screen The main screen is composed of seven distinct elemen...

Page 52: ...atus table are displayed only the most recent 9 lines of RX text are shown The receive buffer will hold up to 250 lines All lines may be viewed by typing IALI R to selects the RX buffer and then up ar...

Page 53: ...t Llsten RTTY ASciI Test SIT SCRffN CALL CQ TES SIND T SIGI PRINT RX DATA lAL HlscotI XXXXXXXX Cotl Dlnectory Lost XXXXXXXX 1 XXXXXXXX XXXXXXXX WAVEFIRM DATA RATE 3 XXXXXXXX Modutotlon SPSM Actuot 5 e...

Page 54: ...Y N Send Fnom Dlsk Sove To Dlsk Contlnuous Dinectony Sove To Dtsk Sequenttol CNNFIGURATINN Receive Buf f en Btock Sove Lood DXP38 Tnonsmlt Buf f en Btock Sove Recond Chonnet Stotlstlcs xx 30 xx Fiteno...

Page 55: ...TRANSMIT ContnoI Messooes TX EN DIS Ctoven Ltne V ord Chon Amton Reponts P Mode NORM REV RTTY Boudot SYNC NN OFF RTTY ASciI USOS ON FF MYCALL XXXXXXXX HISCALL vvyyyyyy HIS DE MY yyyyyyyy DE xxxxxxxx...

Page 56: ...Contno Messoees TX EN DIS Ctoven Llne V ord Chor Annton Reports P Mode Nt RM REV RTTY Baudot SYNC IN NFF RTTY AScII XXXXXXXX MYCALL yyvYvvvv HISCALL yyyyyyyy DE xxxxxxxx HIS DE MY lst 60 chonoctens He...

Page 57: ...ord Chor Amton Reponts Llsten P Mode NORM REV RTTY Boudot WRU ON OFF RTTY AScII Send ARO Mode A Sendtng Sf LCALL SELCALL hts cot slon SELCALL col l slgn 1 SELCALL col slgn SELCALL col I slgn 3 MYCALL...

Page 58: ...C Messoees ContnoI TX f N DIS Ctover Ltne V ord Chon UNPRETO Amton Reponts Ltsten P Mode VRU NN OFF RTTY Boudot RTTY ASciI XXXXXXXX HlscotI Cotl Dtnectony XXXXXXXX XXXXXXXX DATA RATE XXXXXXXX XXXXXXXX...

Page 59: ...erent operations if you wish All configuration files must use the CFG extension and have a legal DOS file name 8 characters maximum You may select or save custom configuration files via any configurat...

Page 60: ...II DXP38 EXE v4 1 DXP3B SA8 v1 0 DXP3B L ID v1 0 Boot RUM v1 0 Product ID 3800 Figure 4 8 Configuration Menu Page 1 CLOVER System 0 hene s0 1 here s1 here s 3 here s3 4 hene s4 5 hene s5 6 hene s6 7 h...

Page 61: ...SYNC n ff I FF RATE 110 PTT NN 0 PTT OFF e0 rSK TONES l AMTOR BAUDNT ASCII MARK n5 Centen rc SPACE 95 Shrf t 170 P MNDE FREO 1 4100 Centen 2200 FREO e300 Shif t 400 CHAPTER 4 OPERATION UNDER DOS 4 13...

Page 62: ...ter CMD Mode Enter CMD Mode Load HIS DE MY Load HIS DE MY Toggle Split Screen Toggle Split Screen Load HIS callsign Load HIS callsign Change HIS SELCAL Change HIS callsign Change HIS callsign Load MYC...

Page 63: ...VER Tune Status Indic Load Time Date End HERE lS Prog Load Date Save Files to Disk Reformat TX buffer Access HELP CW ID ON OFF Stop Disk Operation Delete Line Load file in TX Buf Change MYCALL TX Test...

Page 64: ...used in the original computer file use the Send From Disk option 4 7 4 4 7 2Save To Disk All received data may be saved to disk as a computer file Data bytes or characters are saved exactly as receiv...

Page 65: ...M QPSM 8PSM 8P2A 16P4A bias l Robust 2 Normal 3 Fast rate Throughput in bytes per second 00 99 snr Signal To Noise Ratio 00 99 dB frq Frequency Offset 0 30 Hz phs Phase Dispersion 000 256 ecc Error Co...

Page 66: ...g point is preserved and transfer will resume at that point when a successful link is again made 4 7 5 Directory The Directory file option provides access to computer file in DOS A short form director...

Page 67: ...n TX buffer Delete one character to left of cursor Delete one character to left of cursor Delete character at cursor Toggle between Insert and Overtype modes Reformat current paragraph Delete current...

Page 68: ...ontrol signal In DlS DlSabled state the transmitter will not be turned ON and text typed into the transmit buffer will be held until this control is set to EN ENabled DlS is the normal receive state T...

Page 69: ...polarity of your RTTY signal lt sets the polarity of both the receive and transmit data sections of the DXP38 The default settings for RTTY and AMTOR are Polarity NORM Mark lower frequency tone TONES...

Page 70: ...No 2 dollar sign not designated by CCITT number sign not designated by CCITT BELL apostrophe equal sign plus sign PTT ON PTT ON is a programmable time delay that is used to compensate for the turn on...

Page 71: ...lch level is shown on the four bar amplitude display by small corner symbols on 1 and 4 tuning bars The center LED of the front panel crossed LED display is turned ON whenever receive data will be dis...

Page 72: ...e four CLOVER tone channels one channel for each leg of the Typical displays when tuning a CLOVER signal are shown in Figure 2 4 when using DXP38 EXE front panel LED array STEP ACTION 1 Use Altl A to...

Page 73: ...M 13 02 I22 10 100 BPSM 15 01 110 14 100 Four rows of numbers are displayed two that show MY station parameters and two rows that show HIS station parameters In ARQ mode all four rows are used The low...

Page 74: ...option of the Files menu Files sent that way are transmitted directly rather than through the TX buffer ARQ END Gommands There are two methods of ending a CLOVER Il ARQ Link o Pressing F7l END breaks...

Page 75: ...is the prevailing means of communications within CLOVER I for passing traffic and general conversation occasionally there is a need for a one station to many broadcast The FEC mode serves to provide...

Page 76: ...llows you to monitor any CLOVER activity that may be occurring To enter Listen mode you press Fll then M to access the Mode menu Then press L to select Listen from the mode menu and use space barl to...

Page 77: ...hat may be chosen 1 ARO Mode A 2 FEC Mode B 3 LISTEN Mode L and 4 STBY Standby AMTOR ARQ mode is sent in pulses and both stations transmit in a time sequenced order Each station automatically requests...

Page 78: ...CODE Highlighted 2 Press ENTER The GODE menu will be shown 3 Use the up arrow or down arrowl keys to highlight AMTOR 4 Press ENTER The ARQ menu now appears S Type a new SEL CAL code or choose one of t...

Page 79: ...cally inserteO indicated by lDL instead of TFC on the center status line lf the ARQ link detects errors The TFC DL status line indicator will change to ERR to show that an error has been received or R...

Page 80: ...ay be turned ON or OFF using the CONFIGURATION and TOR menus The ANSWERBACK message is stored in HERE lS 9 CONFIGURATION Page 2 Assuming that WRU is turned ON and an ANSWERBACK message is programmed t...

Page 81: ...DXP3B to AMTOR STBY mode not to FEC Use Gtrll F7 with restraint 4 11 3 LISTEN Mode The DXP38 includes a receive only mode to monitor all AMTOR signals The LISTEN mode also called MONITOR automatically...

Page 82: ...though both transmitters are alternately chirping away Like AMTOR P Mode ARQ requires use of the OVER command to change the direction of data flow There are two slightly different versions NormalOVER...

Page 83: ...rameters have the following meaning CS DELAY MAX DOWN MAX UP MAX TRY MAX ERROR MAX ARQ SUM In ARQ mode the maximum number of flawed data Adj 2 30 blocks before reducing the data rate from 200 baud Def...

Page 84: ...ll F7 Pressing Ctrl F7 causes an immediate end of the FEC transmission clears any unsent text out of the transmit buffer and returns the DXP38 to STBY mode not to FEC Use Ctrl F7 with restraint FEC Go...

Page 85: ...38 hardware problems will generally be caused by one or more of the following situations 1 Incorrect DC power connector The DXP3B uses a coaxial DC power plug The correct plug is HAL P N 310 16030 Add...

Page 86: ...DXP38 LOD files DSP software Also when upgrading software be sure to delete all previous versions of DXP38 CFG you may have previously created You may obtain current software via Internet www halcomm...

Page 87: ...ncrements of 19 5 seconds ARQ frame time Have patience and wait for CLOVER to finish its assigned task before rushing into a new mode or assuming that something is not quite right 5 5 User Seryice The...

Page 88: ...is a good choice if it is available and undamaged A new carton may be purchased from HAL 4 lnsure the DXP38 for its fullvalue 5 Clearly mark HAL s name address and ATTN SERVICE on the shipping box The...

Page 89: ...en circuit maximum 100 mA DC closed circuit maximum CLOVER IIWAVEFORM Tone Pulses 4 Tone pulses spaced 125 Hz and 8 ms apart amplitude shaped for 60 dB composite side lobe suppression Tone Chan 1 Chan...

Page 90: ...ays same or more robust than data blocks BPSM 17160 for all ARQ transmissions ARQ Mode One transmitter to one receiver point to point mode Reed Solomon forward error correction coding Repeat transmiss...

Page 91: ...PC printer device SPECIFICATIONS PAGE 6 3 Save to disk Send from disk Transmit editor macro command key programming and storage on screen tuning indicators on screen real time ionospheric channel sta...

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Page 93: ...is time 4 Return the unit freight prepaid Include in the shipping carton a reference to the Return Authorization Number and a brief description of the problem Correct installation use maintenance and...

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