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DRS WJ-8711A Installation, Operation, And Intermediate Level Maintenance Manual

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IN STALLATION , OPERATION , AN D
IN TERM EDIATE LEVEL M AIN TEN AN CE M AN UAL
FOR THE
W J-8711A DIGITAL HF RECEIVER
P/ N 181126-001, Revision Z
Copyright
DRS Signal Solutions, Inc. 1995
All Rights Reserved
DRS Technologies
DRS Signal Solutions, Inc.
700 Quince Orchard Road
Gaithersburg, M aryland 20878-1794
M arch 2007

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  • Page 1 IN TERM EDIATE LEVEL M AIN TEN AN CE M AN UAL FOR THE W J-8711A DIGITAL HF RECEIVER P/ N 181126-001, Revision Z  Copyright DRS Signal Solutions, Inc. 1995 All Rights Reserved DRS Technologies DRS Signal Solutions, Inc. 700 Quince Orchard Road Gaithersburg, M aryland 20878-1794...
  • Page 2 Courtesy of http://BlackRadios.terryo.org PROPRIETARY STATEM EN T This do cument and subject matter disclo sed herein are pro prietary items to which Sig nal So lutio ns, Inc. retains exclusive rig ht o f disseminatio n, repro ductio n, manufacture and sale. This do cument is pro vided to the individual o r using o rg anizatio n fo r their use alo ne in the direct suppo rt o f the asso ciated equipment unless permissio n fo r further disclo sure is expressly g ranted in writing .
  • Page 3 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER W ARN IN G This unit co ntains a RAM Integ rated Circuit (A2 U5 ) that includes an o n-bo ard lithium so urce used as back up po wer fo r memo ry retentio n. Extreme care sho uld be used in sto rag e, handling , and dispo sal o f parts having lithium co ntent.
  • Page 4 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER THIS PAGE IN TEN TION ALLY LEFT BLAN K W ARN IN GS...
  • Page 5 Courtesy of http://BlackRadios.terryo.org A/ (B blank)
  • Page 6 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K...
  • Page 7 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER LIST OF EFFECTIVE PAGES Pag e N umber Descriptio n Revisio n Co ver Pro prietary Statement W arning s Intentio nally Blank Custo mer Feedback Fo rm Intentio nally Blank L ist o f Effective Pag es L ist o f Effective Pag es Revisio n Reco rd viii...
  • Page 8 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER LIST OF EFFECTIVE PAGES (Continued) Pag e N umber Descriptio n Revisio n 7 -i Sectio n Co ver 7 -ii Intentio nally Blank 7 -1 thru 7 -2 3 Sectio n Seven 7 -2 4 thru 7 -2 6 Sectio n Seven 7 -2 7 thru 7 -3 0...
  • Page 9 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER W J-8711A DIGITAL HF RECEIVER REVISION RECORD Revisio n Descriptio n Date Initial issue. 1 1 / 9 3 Revised specificatio n related to IF bandwidth shape facto rs. 1 2 / 9 3 Pro vides additio nal info rmatio n in Sectio n I co ncerning CO R, DSO 1 , 4 8 8 , 8 KRF, and 2 / 9 4 PCSM...
  • Page 10 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER viii DECLARATION OF CON FORM IITY...

  • Page 11: Table Of Contents

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS W J-8711A DIGITAL HF RECEIVER SECTION 1 GEN ERAL DESCRIPTION Parag raph Pag e 1 .1 Electrical Characteristics .................. 1 -1 1 .2 Mechanical Characteristics ................1 -6 1 .3 Equipment Supplied..................
  • Page 12 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) SECTION II (Continued) Parag raph Pag e A2 J 3 , RS-2 3 2 C Serial Interface Po rt ............2 -7 TB1 , Audio Terminal Blo ck (TB1 ) .............. 2 -7 L ine Audio O utputs (TB1 Terminals 1 thru 6 ) ........
  • Page 13 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) SECTION 3 (Continued) LOCAL OPERATION Parag raph Pag e 3 .2 .1 8 The Special Functio n Key and L ed ..............3 -1 1 Selecting the Passband Tuning Mo de with the SPECIAL FUN CTIO N Key..3 -1 2 Selecting the BITE Initializatio n Mo de with the SPECIAL FUN CTIO N Key ..
  • Page 14 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) SECTION III (Continued) LOCAL OPERATION Parag raph Pag e 3 .5 .2 Selecting a Detectio n Mo de................3 -3 4 3 .5 .3 Selecting an IF Bandwidth ................3 -3 6 Including an IF Bandwidth Filter fo r Selectio n..........
  • Page 15 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) SECTION IV RS-232 REM OTE OPERATION (Continued) Parag raph Pag e 4 .4 Receiver Device Messag es ................4 -5 4 .5 Co mmunicatio n Messag es................4 -1 6 4 .6 Receiver Status Summary .................
  • Page 16 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) SECTION V CSM A REM OTE CON TROL (Continued) Parag raph Pag e 5 .8 .9 Respo nse To G ain Co ntro l Mo de Requests [3 0 ] ..........5 -1 3 5 .8 .1 0 Manual G ain L evel Co mmand W ith Ackno wledg e [3 3 ]........
  • Page 17 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) SECTION VII (Continued) M AIN TEN AN CE Parag raph Pag e 7 .6 .5 Sig nal Streng th Accuracy ................. 7 -8 7 .6 .6 W J -8 7 1 1 A Sensitivity Perfo rmance Test .............
  • Page 18 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) FOLDOUTS Fo ldo ut Pag e FO -1 W J -8 7 1 1 A Critical Dimensio ns Diag ram............FP-1 FO -2 Fro nt Panel Co ntro ls, Indicato rs and Display............FP-3 FO -3 Example o f a Channel Scan O peratio n (3 Sheets)..........
  • Page 19 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) LIST OF ILLUSTRATION S Fig ure Pag e 1 -1 W J -8 7 1 1 A HF Receiver ................... 1 -0 2 -1 Installatio n o f J o nathan Type 1 1 0 Q D-1 6 -2 Slide Mo unts........2 -2 2 -2 Installing the Mo unting Feet fo r Table To p O peratio n ..........
  • Page 20 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER TABLE OF CON TEN TS (Continued) LIST OF ILLUSTRATION S Fig ure Pag e 7 -8 Reco nstructed IF O utput Perfo rmance Test Equipment Co nnectio n ......7 -1 5 7 -9 RF/ IF Sig nal Path Perfo rmance Test Equipment Co nnectio n ........
  • Page 21 Courtesy of http://BlackRadios.terryo.org SECTION 1 GEN ERAL DESCRIPTION...
  • Page 22 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER MEMORY/SCAN FREQUENCY POWER mSec STEP CHANNEL CHANNEL BLANKER DWELL SIZE VIEW EXECUTE +/- ZERO REMOTE STEP TUNE TUNE LOCK SCAN CHANNEL CHANNEL SCAN SCAN SETUP STORE INCLUDE IF BW DET MODE SQUELCH TYPE CHANNEL FREQUENCY...
  • Page 23 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER SECTION 1 GEN ERAL DE SCRIPTION 1.1 ELECTRICAL CHARACTERISTICS The W J -8 7 1 1 A Dig ital HF Receiver is a micro pro cesso r-co ntro lled, synthesiz ed receiver capable o f co ntinuo us 1 Hz tuning reso lutio n o ver the frequency rang e o f 5 kHz to 3 0 .0 MHz.
  • Page 24 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER remo tely. Additio nally BITE can be initiated fro m the RS-2 3 2 C interface as well as status repo rting . The W J -8 7 1 1 A' s internal po wer supply accepts 9 0 -2 6 4 VAC, 4 7 -4 4 0 Hz line po wer as its po wer so urce.
  • Page 25 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 1-1. W J-8711A Digital HF Receiver Specifications (Continued) Typical Typical 3 dB Shape Facto r 3 dB Shape Facto r IF Bandwidths: ....Bandwidths (3 / 6 0 dB) Bandwidths (3 / 6 0 dB) .0 5 6 kHz 1 .4 5 :1 1 .0 0 0 kHz...
  • Page 26 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 1-1. W J-8711A Digital HF Receiver Specifications (Continued) IF O utput Center Frequency ......... 4 5 5 kHz, no minal O utput L evel......... -2 0 dBm, no minal O utput Impedance ........ 5 0 o hms, no minal Co nnecto r Type ........
  • Page 27 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 1-1. W J-8711A Digital HF Receiver Specifications (Continued) L ine Audio O utputs N umber o f O utputs........Two center-tapped, balanced o utputs. Fo r ISB mo de, USB and L SB o n separate o utputs. Fo r all o ther mo des, audio sig nal is co mmo n to bo th o utputs.

  • Page 28: Pa Ra Gra Ph 2 .2 .1

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 1-1. W J-8711A Digital HF Receiver Specifications (Continued) Sho ck (1 )............Bench Handling (Field Service) 8 dro ps to tal o nto a ho rizo ntal hard wo o den surface - o perating . MTBF..............

  • Page 29: Equipment Supplied

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 1.3 EQUIPM EN T SUPPLIED The equipment supplied with the W J -8 7 1 1 A co nsists o f an Intermediate L evel Maintenance Manual, a six-fo o t AC po wer co rd, and fo ur plastic feet. The fo ur plastic feet can be easily installed o n the bo tto m o f the unit fo r table to p o peratio n.

  • Page 30: W J-8711/ Dso1 Digital Sign Al Output Option

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 1.5.4 W J-8711/ DSO1 DIGITAL SIGN AL OUTPUT OPTION This o ptio n pro vides a dig ital sig nal o utput fo r external dig ital sig nal pro cessing . A 1 5 -pin D-subminiature co nnecto r is pro vided o n the rear panel o f Appendix D the receiver fo r dig ital sig nal o utput.

  • Page 31: J -8 7 1 Y/ Seu Speech Enhancement Unio N

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 1.5.10 W J-871Y/ SEU SPEECH EN HAN CEM EN T UN IT The W J -8 7 1 Y/ SEU Speech Enhancement Unit o ptio n uses adaptive filtering techniques to pro vide enhancement o f audio sig nals that are received fro m sig nals in the HF frequency band.
  • Page 32 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER sto res the no n-SSB IFBW value and selects the 3 .2 kHz IFBW . W hen the detectio n mo de is chang ed back to a no n-SSB detectio n mo de, the previo usly sto red no n-SSB IFBW returns.

  • Page 33: W J-8711A Fron T Pan El Con Trol Softw Are Release History

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER set. A Speech Enhancement O ptio n was added. The default fo r this o ptio n is O FF. * O PT? returns Bit 1 o f Byte 2 set. In o rder to use the SEU o ptio n, the PCSM o ptio n must be set O N .

  • Page 34: W J-8711A Dsp Softw Are Release History

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 1.6.3 W J-8711A DSP SOFTW ARE RELEASE HISTORY The W J -8 7 1 1 A DSP so ftware is sto red in EPRO M A2 U5 6 . The o rig inal versio n 1 .0 0 , released May 2 9 , 1 9 9 1 .

  • Page 35: In Stallation

    Courtesy of http://BlackRadios.terryo.org SECTION 2 IN STALLATION...
  • Page 36 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K...

  • Page 37: Unpacking And Inspectio N

    . Remo ve all equipment and accesso ries fro m the shipping co ntainer. If any items are missing , co ntact the facto ry o r yo ur DRS Sig nal So lutio ns, Inc. representative.
  • Page 38 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Figure 2 -1 bracketed equipment racks using machined bar nuts. illustrates installatio n o f the chassis slides to an equipment rack, with special attentio n g iven to bracket ho le spacing . CAUTION Do not use screws longer than 5/ 16 inch in slide mounting holes of the...

  • Page 39: Mo Unting Feed Fo R Table To P O Peratio N

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 2.2.2 M OUN TIN G FEET FOR TABLE TOP OPERATION The W J -8 7 1 1 A can be o perated o n a bench, table to p, o r any o ther clean, dry, secure surface.

  • Page 40: Po Wer Requirements

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 2.2.3 POW ER REQUIREM EN TS The W J -8 7 1 1 A requires an input vo ltag e o f 9 0 -2 6 4 VAC at 4 7 to 4 4 0 Hz fo r o peratio n.

  • Page 41: Rf In , Antenna Input (A3 J 1 )

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 2-1. List of Connectors Reference Co nnecto r Desig natio n Functio n A3 J 1 BN C female. RF input fro m an antenna (o r fro m RF IN A4 J 2 Preselecto r O utput, when co nfig ured with W J -8 7 1 1 / PRE o ptio n).

  • Page 42: Ext Ref, External Reference Input (A3 J 3 )

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER minimum bandwidth o f 3 0 kHz at -6 dB po ints and an inverted spectrum. The no minal o utput impedance is 5 0 o hms with appro ximately 2 5 dB o f g ain fro m the antenna input.

  • Page 43: A2J3, Rs-232C Serial In Terface Port

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER A2J3, RS-232C SERIAL IN TERFACE PORT This D-type, 2 5 -pin co nnecto r is used as the interface po rt fo r RS-2 3 2 C remo te o peratio ns. The RS-2 3 2 C interface o perates as a full duplex interface at a selectable baud rate o f 7 5 to 9 6 0 0 bps.

  • Page 44: Speaker O Utput (Tb1 Terminals 7 And 8 )

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER terminal eig ht is po sitive (SPEAKER (+)). The bandwidth o f the o utput audio is 0 .1 to 1 3 .0 kHz at ± 2 dB. O utput level is 2 Vrms minimum with less than 3 % to tal harmo nic disto rtio n.

  • Page 45: Phon Es, Fron T Pan El Headphon Es Jack (A1J1)

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER PHON ES, FRON T PAN EL HEADPHON ES JACK (A1J1) The PHO N ES co nnecto r lo cated o n the fro nt panel is a 1 / 4 -inch stereo headpho nes jack.
  • Page 46 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Switches 1 thru 6 o f A2 S2 are used to set the receiver' s address o n the CSMA bus during CSMA remo te o peratio ns. Valid addresses are fro m Figure 2 -4 0 1 to 6 3 (address 0 0 is reserved).
  • Page 47 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER REAR DIGITAL TUNER ASSEMBLY ASSEMBLY (A2) (A3) FRONT A2S1 A2S2 Off (Up) = 0 On (Down) = 1 ROCKER ROCKER FUNCTION: SWITCH SWITCH FUNCTION: Always Off CSMA Tuned Freq. Format Four-Byte Format Always Off Five-Byte Format Always Off...

  • Page 48: Equipment Malfunctio Ns

    Custo mer Service Department to prevent the po ssibility o f vo iding the terms o f the warranty. Co ntact DRS Sig nal So lutio ns, Inc. via mail, telepho ne, wire, o r cable at: DRS Sig nal So lutio ns, Inc.

  • Page 49: Preparation For Reshipm En T Or Storage

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 2.4 PREPARATION FOR RESHIPM EN T OR STORAGE If the equipment must be prepared fo r reshipment, the packag ing metho d sho uld fo llo w the pattern established in the o rig inal shipment. Use the best packag ing materials available to pro tect the equipment during reshipment o r sto rag e.
  • Page 50 ° Humidity: less than 9 5 % Ship to : DRS Sig nal So lutio ns, Inc. 7 0 0 Q uince O rchard Ro ad G aithersburg , MD 2 0 8 7 8 -1 7 9 4 U.S.A.

  • Page 51: Local Operation

    Courtesy of http://BlackRadios.terryo.org SECTION 3 LOCAL OPERATION S...
  • Page 52 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K 3-ii...

  • Page 53: Parag Raph

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER SECTION 3 OPERATION S 3.1 IN TRODUCTION This sectio n pro vides info rmatio n related to the lo cal o peratio n o f the W J -8 7 1 1 A Dig ital HF Receiver using its fro nt panel co ntro ls, indicato rs, Pa ra gra ph 3 .2 and displays.

  • Page 54: The Tuned Frequency Display

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Foldout FO -2 As sho wn in , three sectio ns o f the fro nt panel have shaded backg ro unds. These shaded areas are pro vided as an aid to the o perato r by g ro uping sets o f keys within particular functio nal areas o f receiver o peratio ns.

  • Page 55: The Tun E Lock Key An D Led

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.2 THE TUN E LOCK KEY AN D LED The functio n o f the TUN E L O CK key is to allo w the o perato r to " lo ck o ut" any po ssibility o f chang ing displayed tuned...

  • Page 56: The Tuning W Heel

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.4 THE TUN IN G W HEEL The tuning wheel is a 2 -1 / 2 inch diameter kno b lo cated in the lo wer rig ht- hand co rner o f the fro nt panel. The o nly functio n o f the tuning wheel is to chang e receiver' s tuned frequency.

  • Page 57: The N Umeric Entry Keys (0 -9 And Decimal Po Int)

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER • The receiver' s tuned frequency canno t be increased o r decreased beyo nd the tuning rang e o f the receiver (0 .0 0 0 0 0 0 to 3 0 .0 0 0 0 0 0 ). The display also do es no t "...
  • Page 58 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The fo llo wing keys are valid terminato r keys fo r numeric entries: MHz key kHz key SQ UEL CH key BFO key BL AN KER key IF BW key SPECIAL FUN CTIO N key DW EL L key STEP SIZE key CHAN N EL VIEW key...

  • Page 59: The Khz (Kilo Hertz) And Mhz (Meg Ahertz ) Keys

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.7 THE KHZ (KILOHERTZ) AN D M HZ (M EGAHERTZ) KEYS The kHz and MHz keys can be used as terminato rs fo r numeric entries o f the receiver tuned frequency. Fo r example, to enter a tuned frequency o f 0 .0 5 0 0 0 0 MHz (o r 5 0 kHz), press the 5 key, then the 0 key, and then terminate the entry by pressing the kHz key.

  • Page 60: The If Bw Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.11 THE IF BW KEY AN D LED The IF BW key is lo cated belo w the lo wer display in the Auxiliary Parameter sectio n. This key serves two functio ns: IF bandwidth select and IF bandwidth enter.

  • Page 61: The Det Mo De Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.12 THE DET M ODE KEY AN D LED The DET MO DE key is lo cated belo w the lo wer display in the Auxiliary Parameter sectio n. This key is used to enter the receiver' s detectio n mo de. The detectio n mo de entry mo de is enabled when the DET MO DE key L ED is lit.

  • Page 62: The Bfo Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.15 THE BFO KEY AN D LED W hen the CW detectio n mo de is selected, a beat frequency o scillato r (BFO ) frequency can be entered. The BFO key is used to allo w the entry o f the BFO frequency.

  • Page 63: The Blanker Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.17 THE BLAN KER KEY AN D LED The BL AN KER key is lo cated belo w the upper display o f the Auxiliary Parameter sectio n. This key is used to enable the entry o f the no ise blanker parameter fo r the receiver.

  • Page 64: Selecting The Passband Tuning Mo De With The Special Fun Ctio N Key

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER • Terminates numeric entries in the Passband Tuning mo de and the CSMA Address Entry mo de. • Displays the currently selected type o f reference frequency (internal o r external) and reference frequency (1 , 2 , 5 , o r 1 0 MHz) if external. •...

  • Page 65: Selecting The Bite Initializatio N Mo De With The Special Fun Ctio N Key

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER SELECTIN G THE BITE IN ITIALIZATION M ODE W ITH THE SPECIAL FUN CTION KEY The BITE (built-in-test) initializatio n mo de can be enabled by pressing the SPECIAL FUN CTIO N key until the upper Auxiliary Parameter display appears as sho wn belo w.

  • Page 66: Selecting The Csma Address Mo De With The Special Fun Ctio N Key

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Here, " nnnn" is the current selected baud rate. The Auxiliary Parameter edit kno b can be used to select the baud rate. The selectio n is reco g nized by the receiver o nly after po wer is cycled o ff and back o n. If CSMA remo te co ntro l is selected, pressing the SPECIAL FUN CTIO N key ag ain while the abo ve messag e is displayed causes the CSMA Address pa ra gra ph 3 .2 .1 8 .5...

  • Page 67: Displaying The Currently Selected Reference Frequency

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER DISPLAYIN G THE CURREN TLY SELECTED REFEREN CE FREQUEN CY The currently selected reference frequency can be displayed by pressing the SPECIAL FUN CTIO N key until the upper Auxiliary Parameter display appears as sho wn belo w.

  • Page 68: Selecting The Variable Ag C Decay Time Feature

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER scale o f the audio channel. W hen AG C is enabled, all sig nals belo w the specified thresho ld are unaffected by AG C and are no t bro ug ht up to full scale.

  • Page 69: The Auxiliary Parameter Edit Kno B

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Pressing the SPECIAL FUN CTIO N key ag ain accepts the medium decay entry and presents the slo w decay field in the Auxiliary Parameter display as sho wn belo w. The valid rang e o f slo w decay time is fro m 1 to 5 seco nds in 0 .5 -seco nd increments.
  • Page 70 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER IF Bandwidth: Scro lls (clo ckwise) scro lls do wn (co unterclo ckwise) thro ug h available bandwidths when the IF BW key L ED is lit pa ra gra ph 3 .2 .1 1 The IF bandwidth selec- tio n do es no t g o directly fro m the maximum to minimum bandwidth when the edit kno b is turned...

  • Page 71: The Memo Ry/ Scan Sectio N Alphanumeric Display

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Tunable N o tch Filter: Increases (clo ckwise) decreases (co unter- clo ckwise) the po sitio n o f the tunable no tch filter. ± The rang e is 9 9 9 9 Hz in 1 Hz steps. This setting represents the po sitio n o f the no tch filter with respect to the tuned carrier frequency.

  • Page 72: The Channel View Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER pa ra gra ph 3 .2 .9 L ED is lit ( ) and it defines the step siz e used in a frequency-to -frequency scan setup. The step size can also be adjusted by pa ra gra ph entering the scan setup menu with the SCAN SETUP key ( 3 .2 .2 6...

  • Page 73: The Channel Execute Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER standard channel view fo rmat sho wing the channel number and the co rrespo nding sto red frequency. W hen the standard channel view fo rmat is displayed and an unterminated numeric entry is no t in pro g ress, pressing the CHAN N EL VIEW key causes the next hig her channel number and its frequency to be displayed.
  • Page 74 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER setup menu displayed is dependent o n the current scan type selected with the SCAN TYPE key, and indicated by the lit scan type L ED. Each press o f the SCAN SETUP key causes the next line o f the scan type setup menu to be displayed.

  • Page 75: The Frequen Cy Lockout Key

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER L k XX.XXXXXX (where XX.XXXXXX is the lo west lo cko ut frequency in MHz ) (each key press scro lls thro ug h the entered lo cko ut frequencies in frequency-numeric o rder between F1 and F2 ) L k XX.XXXXXX (where XX.XXXXXX is the hig hest lo cko ut frequency in...

  • Page 76: The Channel Sto Re Key

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER L o cko ut frequencies canno t be entered with the FREQ UEN CY L O CKO UT key while the receiver is actively scanning . An attempt to enter a lo cko ut frequency while the receiver is actively scanning causes the fo llo wing messag e to be displayed fo r three seco nds: MEMORY/SCAN...

  • Page 77: The Channel Include Key

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER • Pressing this key twice while a lo cko ut frequency is no t displayed causes the fo llo wing messag e to be displayed o n the alphanumeric display. MEMORY/SCAN N E X T = C L R M E M •...

  • Page 78: The Scan Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER and sto p channels. A channel set to the " skip" status is indicated by an " s" to the left o f the channel number in the alphanumeric display. After setting a channel to "...

  • Page 79: The Memo Ry/ Scan Parameters Edit Kno B

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.34 THE M EM ORY/ SCAN PARAM ETERS EDIT KN OB The Memo ry/ Scan parameters edit kno b is lo cated belo w the STEP SIZE and CHAN N EL VIEW keys in the Memo ry/ Scan sectio n o f the fro nt panel. This kno b can be used to alter vario us Memo ry/ Scan parameters o f the receiver when certain restrictio ns are met.

  • Page 80: The Phon Es Output Volum E Con Trol Kn Ob

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.35 THE PHON ES OUTPUT VOLUM E CON TROL KN OB The PHO N ES o utput vo lume co ntro l kno b is lo cated to the rig ht o f the PHO N ES jack o n the bo tto m left-hand co rner o f the fro nt panel.

  • Page 81: The Rf Input Key

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.38 THE RF IN PUT KEY The RF IN PUT key is lo cated to the rig ht o f the SPEAKER vo lume co ntro l kno b o n the fro nt panel. This key is used to select the path o f the input RF sig nal, prio r to being applied to any IF co nversio ns.

  • Page 82: The Remo Te Key And L Ed

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.2.41 THE REM OTE KEY AN D LED The REMO TE key is lo cated belo w the PO W ER switch o n the to p left-hand co rner o f the fro nt panel. This key is used to place the receiver in and o ut o f Remo te mo de o f o peratio n.

  • Page 83: Perfo Rming A Co Ld Start At Po Wer-Up

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.3.1 PERFORM IN G A COLD START AT POW ER-UP N O TE: W hen a co ld start is perfo rmed at po wer-up, all setups in memo ry are cleared. All scan setups, memo ry channel co ntents, and receiver parameters are reset to their default co nditio ns.

  • Page 84: O Peratio N In The Manual Mo De

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.5 OPERATION IN THE M AN UAL M ODE The Manual mo de is used fo r " manually" tuning the receiver to o ne frequency and mo nito ring it fo r sig nal activity. To pro perly o perate the receiver in the Manual mo de, the fo llo wing functio ns and parameter adjustments sho uld be perfo rmed.

  • Page 85: Entering The Tuned Frequency

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.5.1 EN TERIN G THE TUN ED FREQUEN CY In the Manual mo de, the receiver mo nito rs the frequency indicated in the FREQ UEN CY display. This frequency can be any value fro m 0 .0 0 0 0 0 0 to 3 0 .0 0 0 0 0 0 MHz, at a reso lutio n o f 1 Hz.

  • Page 86: Selecting A Detectio N Mo De

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER value in that po sitio n to chang e. W hen tuning up in frequency (turning the wheel clo ckwise), g o ing past 9 causes the hig hlig hted dig it to display 0 and the dig it to its left to increment by o ne (fo r example 0 .0 0 9 0 0 0 to 0 .0 1 0 0 0 0 ).
  • Page 87 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER sig nal lo ss due to fading . The o peratio n o f the receiver in the Synchro no us AM Mo de can be enhanced by emplo ying the Variable AG C Thresho ld feature.

  • Page 88: Selecting An If Bandwidth

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER To select a different detectio n mo de, press the DET MO DE key so that its L ED beco mes lit. Then use either the Auxiliary Parameter edit kno b o r co ntinue pressing the DET MO DE key until the desired detectio n mo de is displayed.

  • Page 89: Setting The Squelch L Evel

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER O nce in the IF Bandwidth Select mo de, each o f the 6 6 IF bandwidth filters can be set to " include" o r " skip" as desired. To set a filter fo r " include" , first select the desired IF bandwidth by ro tating the Auxiliary Parameter edit kno b until that bandwidth is displayed in the lo wer Auxiliary Parameter display.

  • Page 90: Selectin G The Gain Con Trol M Ode

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.5.6 SELECTIN G THE GAIN CON TROL M ODE Three mo des o f AG C are available: fast, medium, and slo w. The fast AG C mo de pro vides a 1 5 -milliseco nd (ms) attack time and a variable (in 1 0 -ms increments) decay time fro m 1 0 ms to 1 0 0 ms.

  • Page 91: Passband Tuning In Cw Detectio N Mo De

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.5.8 PASSBAN D TUN IN G IN CW DETECTION M ODE The passband tuning functio n is available o nly while the receiver is in the CW detectio n mo de. This functio n has the effect o f shifting the IF bandwidth witho ut chang ing the frequency o f the audio o utput sig nals so that unwanted CW sig nals can be placed o utside o f the IF bandwidth while keeping the wanted CW sig nals inside the bandwidth.

  • Page 92: Using The Tunable N O Tch Filter

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The current no ise blanker setting is displayed in the upper Auxiliary Parameter display, directly abo ve the BL AN KER key. To adjust the setting , first press the BL AN KER key to lig ht its L ED and enable the no ise blanker entry mo de.
  • Page 93 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 3-1. Tunable N otch Filter Range Maximum Relative Setting fro m the IF Bandwidth (kHz) Tuned Carrier Frequency ± .0 5 6 , .0 6 3 , .0 6 9 9 7 Hz .0 7 5 , .0 8 1 , .0 8 8...

  • Page 94: Chang Ing Receiver Parameters To Tho Se Sto Red In A Memo Ry Channel

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER O nce the desired memo ry channel is displayed, press the STO RE key. This causes the new sto red frequency to be displayed fo r three seco nds in the Memo ry/ Scan display and the channel number to be prefixed with an " i" (example "...

  • Page 95: Using The Dwell Timer

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER In the frequency-to -frequency scan mo de, the receiver is pro g rammed to scan all frequencies between and including a start frequency and a sto p frequency. If a sig nal is fo und, the scan mo de sto ps and displays the current frequency.

  • Page 96: Chan N El Scan Setup

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Three scan type setups menus are available: channel (CHAN N EL SCAN → TYPE L ED lit), frequency-to -frequency (F1 F2 SCAN TYPE L ED lit), and → frequency-to -frequency with lo cko ut frequencies inserted (F1 F2 w/ L O CK SCAN TYPE L ED lit).

  • Page 97: Frequency-To -Frequency

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER FREQUEN CY-TO-FREQUEN CY → F2) SCAN SETUP Frequency-to -Frequency scan setups can be entered when the SCAN SETUP → key L ED is lit and the F1 F2 SCAN TYPE L ED is lit. In this setup menu, fo ur items can be entered: the start frequency, the sto p frequency, the step size, and the dwell time.

  • Page 98: Frequency-To -Frequency With L O Cko Uts

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER FREQUEN CY-TO-FREQUEN CY W ITH → LOCKOUTS (F1 W / LOCK) SCAN SETUP Frequency-to -frequency with lo cko uts scan setups can be entered when the → SCAN SETUP key L ED is lit and the F1 F2 w/ L O CK SCAN TYPE L ED is lit.

  • Page 99: Running The Built-In-Test Functio N (Bite)

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER channel to which the receiver is currently tuned is displayed. W hen the scan is restarted the scan resumes at the next channel in the scan sequence. W hen paused, the receiver acts as if it is in the Manual mo de. Receiver parameters can be adjusted to lo o k mo re clo sely at a received sig nal.
  • Page 100 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 3-2. BITE Error Codes (Continued) Decimal Value Erro r Indicatio n N o Response Ba ck From the Host Processor - the DSP pro cesso r did no t receive a respo nse back fro m the ho st micro pro cesso r. DSP M em ory Check N ot Com pleted - the check o f the DSP pro cesso r' s internal memo ry co uld no t be co mpleted.

  • Page 101: Displaying The Receiver' S Current Internal Co Ntro L So Ftware Versio N

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.10 DISPLAYIN G THE RECEIVER'S CURREN T IN TERN AL CON TROL SOFTW ARE VERSION To display the receiver' s current internal co ntro l so ftware versio n turn the PO W ER switch o ff and then o n. The receiver g o es thro ug h its initializ atio n ro utine and displays the unit' s current internal co ntro l so ftware versio n in the Memo ry/ Scan display.

  • Page 102: Selectin G The Baud Rate For Rem Ote Operation S

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 3.11.2 SELECTIN G THE BAUD RATE FOR REM OTE OPERATION S The baud rate fo r RS-2 3 2 and CSMA remo te o peratio ns can be selected fro m the fro nt panel by pressing the SPECIAL FUN CTIO N key until the messag e "...
  • Page 103 Courtesy of http://BlackRadios.terryo.org SECTION 4 RS-232 REM OTE OPERATION...
  • Page 104 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K 4-ii...

  • Page 105: Rem Ote Operation

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER SECTION 4 RS-232 REM OTE OPERATION 4.1 IN TRODUCTION The W J -8 7 1 1 A Dig ital HF Receiver has the built-in capability o f being co ntro lled remo tely by a co mputer o r o ther co ntro ller device that is equipped with an RS-2 3 2 serial interface and capable o f transmitting and receiving ASCII-standard enco ded characters.

  • Page 106: In Terfacin G W Ith The W J-8711A

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER This sectio n o f the manual co ntains all the info rmatio n necessary to enable an o perato r to co ntro l and mo nito r the abo ve receiver parameters fro m an RS-2 3 2 co ntro ller.

  • Page 107: Co Mmand Messag E Fo Rmatting

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER It is impo rtant in serial data transmissio ns that the receiving device kno ws when data is being transferred and when data being transferred is abo ut to sto p. This info rmatio n is co nveyed by the abo ve start and sto p bits. The start bit synchro nizes the receiving device so it reads the data pro perly.
  • Page 108 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 4.3.3 REPRESEN TATION OF N UM ERIC ARGUM EN TS Arg uments fo r co mmands and queries in this manual are represented by an nrX (where X is either f, 1 , o r 2 ). The nrf representatio n is used fo r co mmand numeric arg uments.

  • Page 109: Receiver Device Messag Es

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 4.4 RECEIVER DEVICE M ESSAGES Receiver Device Messag es are co mmands that affect the o peratio nal Ta ble 4 -1 parameters o f the receiver. These co mmands are listed in Table 4-1.
  • Page 110 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n BFO nrf Set frequency in Hz (1 0 Hz steps). Rang e: -8 0 0 0 to +8 0 0 0 W here: +0 0 0 0 = BFO O ff BFO ? BFO nr1...
  • Page 111 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n Select o ne o f the 6 6 available IF bandwidth filters. W here nrf BW N nrf represents the filter number.
  • Page 112 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n BW S nrf BW S nr1 Select an IF bandwidth. Rang e: 1 -5 W here: 1 - 0 .3 0 kHz 2 - 1 .0 0 kHz 3 - 3 .2 0 kHz 4 - 6 .0 0 kHz...
  • Page 113 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n DET nrf Set the detectio n mo de. Rang e: 1 - 7 W here: 1 - AM 2 - FM 3 - CW 4 - USB 5 - L SB...
  • Page 114 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n FRQ nrf Set the tuned frequency in MHz (1 -Hz steps). Rang e: 0 0 .0 0 0 0 0 0 to 3 0 .0 0 0 0 0 0 FRQ ? FRQ nr1 Request the tuned frequency.
  • Page 115 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n N FM nrf Set the tunable no tch filter mo de. Rang e: 0 ,1 W here: 0 = O FF 1 = Relative (O N ) N FM? N FM nrl...
  • Page 116 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n O PR nrf Select o peratio n mo de. Rang e: 0 , 1 W here: Manual scan (type o f scan is dependent o n current scan type (SCF) selectio n.) O PR? O PR nr1...
  • Page 117 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n REF? REF nr1 Request the status o f the external reference. Rang e: 0 - 4 W here: 0 - Internal 1 - 1 0 MHz External 2 - 5 MHz External 3 - 2 MHz External...
  • Page 118 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n SCS? SCS nr1 Request the current receiver scan status. Rang e: 0 to 3 W here: 0 = N o scan 1 = Scan 2 = Scan dwell 3 = Scan paused...
  • Page 119 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-1. Receiver Device M essages (Continued) Co mmand Respo nse Descriptio n SQ L nrf Set squelch level in neg ative dBm. Rang e: 0 to 1 3 5 , 1 3 6 = squelch o ff SQ L ? SQ L nr1 Request the squelch level setting in -dBm...

  • Page 120: Co Mmunicatio N Messag Es

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 4.5 COM M UN ICATION M ESSAGES Co mmunicatio n messag es are always valid. These are co mmands which establish co mmunicatio ns between the W J -8 7 1 1 A and the co ntro ller. Ta ble 4 -2 W J -8 7 1 1 A co mmunicatio n messag es are listed in Co mmo n...
  • Page 121 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-2. Communication M essages (Continued) Co mmand Respo nse Descriptio n * L RN ? * L RN nr2 ,nr1 , Request current W J -8 7 1 1 A o perating parameters. The data nr1 ,nr1 ,nr1 ,nr1 , returned fo r this query is field dependent.
  • Page 122 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-2. Communication M essages (Continued) Co mmand Respo nse Descriptio n * RSE nrf This co mmand allo ws writing to a reg ister that enables interrupts to be passed fro m the RSR reg ister to the * STB reg ister via its RSB bit.
  • Page 123 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-2. Communication M essages (Continued) Co mmand Respo nse Descriptio n * SRE nrf Set the Service Request Enable Reg ister. See discussio n o f the Status Byte Reg isters fo r bit-mapped details. Rang e: 0 - 2 5 5 * SRE?

  • Page 124: Receiver Status Summary

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 4.6 RECEIVER STATUS SUM M ARY Figure 4 -1 illustrates the architecture o f the receiver' s status reg isters. It is co mpo sed o f six eig ht-bit reg isters and o ne 1 6 -bit reg ister, who se lo g ic g ating allo ws the pro g rammer g reat flexibility in remo te o peratio ns.
  • Page 125 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Figure 4-1. Receiver Status Data Structure RS-232 REM OTE OPERATION 4-21...

  • Page 126: Status Bytes

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 4.6.1 STATUS BYTES The fo llo wing info rmatio n discusses the o peratio n o f the SRQ interrupt and the " * STB? " query. The o peratio n o f these is very similar. The SRQ interrupt allo ws the co ntro ller to establish which event has caused the receiver to set the SRQ .

  • Page 127: Receiver Status Register

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-4. Event Summary Status Register, Bit Evaluation N umber Mnemo nic Descriptio n O pera tion Complete O PC - This bit is set o n co mpletio n o f o peratio n that has been desig nated by the * O PC co mmand.

  • Page 128: Device-Dependent Erro R Reg Ister

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-5. Receiver Status Register, Bit Evaluation Decimal Value Functio n PRS, sig nal exceeded CO R thresho ld. This is an edg e trig g ered event o n the actio n o f a sig nal g o ing fro m belo w CO R thresho ld to abo ve CO R thresho ld.

  • Page 129: Messag E Pro Cessing

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 4-6. Device-Dependent Error Register, Bit Evaluation Decimal Value Mnemo nic Descriptio n DSP ERR 1 Co ntro l to DSP transmit pipeline no t empty. DSP ERR 2 Co ntro l to DSP do wnlo ad unsuccessful. DSP ERR 3 DSP EPRO M do wnlo ad unsuccessful.

  • Page 130: 2 Co Mmunicatio Ns Pro To Co L

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 4.8 RS-232 COM M UN ICATION S PROTOCOL co mmunicatio ns pro to co l fo r the W J -8 7 1 1 A implements bo th EN Q / ACK (EN Q uire/ ACKno wledg e) and XO N / XO FF (ctl Q / ctl S) so ftware handshakes.

  • Page 131: Buffer Handling

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 4.8.2 EN Q/ ACK PROTOCOL W hen the EN Q character is sent to the W J -8 7 1 1 A, it respo nds to a valid messag e with an ACK, o r to an invalid messag e with a N AK. An invalid messag e is indicated o n a data co mmunicatio ns erro r such as framing , no ise, o r o verrun.
  • Page 132 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER N OTES 4-28 RS-232 REM OTE OPERATION...
  • Page 133 Courtesy of http://BlackRadios.terryo.org SECTION 5 CSM A REM OTE CON TROL...
  • Page 134 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K 5-ii...

  • Page 135: Csm A Rem Ote Con Trol

    L imit the number o f devices o n the bus; DRS Sig nal So lutio ns, Inc. reco mmends the use o f a ICO M CT-1 7 CI-V L evel Co nverter to co ntro l multiple receivers via their CSMA interfaces when the co ntro ller is a PC equipped with an RS-2 3 2 serial interface.

  • Page 136: Setting Up The Receiver Fo R Remo Te Csma Interface

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER WJ-871Y CSMA HF RECEIVER WJ-871Y CSMA HF RECEIVER ICOM RS-232C MODEL CT-17 CONTROLLER ADAPTER CI-V LEVEL CONVERTER WJ-871Y CSMA HF RECEIVER WJ-871Y CSMA HF RECEIVER ADAPTER 1/8" TO 1/8" WJ-871Y MINIPHONE AUDIO CABLE CSMA HF RECEIVER ANCILLARY PARTS INFORMATION...

  • Page 137: Electrical Requirements O F The Interface

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The fo llo wing receiver parameters are co ntro llable via the CSMA interface: • lo cal co ntro l, remo te co ntro l, o r remo te co ntro l with lo cal lo cko ut, •...

  • Page 138: Serial Data Transmissio Ns

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 5.5 SERIAL DATA TRAN SM ISSION S Data in serial transmissio ns is read fro m the transitio n o f the chang e in state (i.e., hig h to lo w, o r lo w to hig h). Data transmitters and data receivers co nnected o n the...

  • Page 139: Con Trol Codes

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The preamble [FE|FE] identifies the start o f a messag e. The receiver address (RX ADDR) identifies the address o f the unit that is to receive the data. The W J -8 7 1 1 A' s address setting sho uld be entered at this lo catio n. The transmitting statio n address identifies the address o f the co ntro ller sending the data.
  • Page 140 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 5-1. CSM A Control Code Co ntro l Co de Descriptio n (Hexadecimal) (Decimal) Set the tuned frequency in Hz witho ut ackno wledg e. Rang e: 0 0 0 0 0 0 0 0 - 3 0 0 0 0 0 0 0 Set the detectio n mo de (first data byte) and IF bandwidth (seco nd data byte) witho ut ackno wledg e.

  • Page 141: Details O N Co Mmand And Respo Nse Fo Rmats

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 5-1. CSM A Control Code (Continued) Co ntro l Co de Descriptio n (Hexadecimal) (Decimal) Request active g ain co ntro l mo de. Select g ain co ntro l mo de with ackno wledg e. W here: 0 0 - Manual 0 1 - Slo w AG C...

  • Page 142: Tuned Frequency Co Mmand W Ith Ackno Wledg E [0 5 ]

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER x 1 Hz x 1 MHz 87IL10 PREAMBLE CONTROL VARIABLE LENGTH END OF ADDR ADDR CODE DATA MESSAGE Figure 5-5. Tuned Frequency Command Format without Acknowledge The frequency can be set to any value fro m 0 to 3 0 .0 MHz at a reso lutio n o f 1 Hz .

  • Page 143: Respo Nse To Tuned Frequency Requests [0 3 ]

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The frequency can be set to any value fro m 0 to 3 0 .0 MHz at a reso lutio n o f 1 Hz . The frequency entered in the example is 1 4 .1 2 3 4 5 0 MHz. The first byte o f the frequency data co ntains Hz data.

  • Page 144: Detectio N Mo De/ If Bandwidth Co Mmand W Itho Ut Ackno Wledg

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER UPPER FREQUENCY LIMIT x 1 Hz x 1 MHz 87IL13 PREAMBLE CONTROL FIXED LENGTH MESSAGE ADDR ADDR CODE DATA BREAK LOW ER FREQUENCY LIMIT x 1 Hz x 1 MHz FIXED LENGTH END OF DATA MESSAGE...

  • Page 145: Detectio N Mo De/ If Bandwidth Co Mmand W Ith Ackno Wledg

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The first byte after the co ntro l co de co ntains the detectio n mo de co de. The seco nd byte co ntains the IF bandwidth co de. See co ntro l co de [0 1 ] in Ta ble 5 -1 fo r the detectio n mo de and IF bandwidth cho ices and their co des.
  • Page 146 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER MODE 87IL16 PREAMBLE CONTROL END OF ADDR ADDR CODE MESSAGE Figure 5-11. Detection M ode/ IF Bandwidth Request Response Format The first byte in the respo nse co ntains the detectio n mo de co de and the seco nd byte co ntains the IF bandwidth co de.

  • Page 147: Respo Nse To G Ain Co Ntro L Mo De Requests [3 0 ]

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 5.8.9 RESPON SE TO GAIN CON TROL M ODE REQUESTS [30] Figure 5 -1 3 sho ws an example o f the typical respo nse fo rmat when requesting the receiver' s active g ain co ntro l mo de with co ntro l co de [3 0 ]. GAIN MODE 87IL18...

  • Page 148: Respo Nse To Manual G Ain L Evel Requests [3 2 ]

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 5.8.11 RESPON SE TO M AN UAL GAIN LEVEL REQUESTS [32] Figure 5 -1 5 sho ws an example o f the typical respo nse fo rmat when requesting the receiver' s manual g ain level with co ntro l co de [3 2 ]. 100'S 87IL20 CONTROL...

  • Page 149: Respo Nse To Bfo Frequency Requests [3 4 ]

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The frequency can be set to any value fro m +7 9 9 9 to -8 0 0 0 kHz at a reso lutio n o f 1 0 Hz . Sending +0 0 0 0 sets the BFO to o ff. The frequency entered in the example is +2 .5 5 0 kHz.

  • Page 150: Respo Nse To Rf Input Path Requests [3 8 ]

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER PATH 87IL23 PREAMBLE CONTROL END OF ADDR ADDR CODE MESSAGE Figure 5-18. RF Input Path Command Format O ne byte is sent with the co ntro l co de. In the example, the no rmal RF input path is selected [0 1 ].

  • Page 151: Device Co Ntro L Mo De Co Mmand W Ith Ackno Wledg E [3 7 ]

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 5.8.16 DEVICE CON TROL M ODE COM M AN D W ITH ACKN OW LEDGE [37] Figure 5 -2 0 sho ws an example o f the typical fo rmat fo r selecting the receiver' s co ntro l mo de using co ntro l co de [3 7 ].

  • Page 152: Collision Detection

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The byte in the respo nse after the co ntro l co de co ntains the device co ntro l mo de co de. The respo nse in this byte is [0 0 ] fo r L o cal, [0 1 ] fo r Remo te, o r [0 2 ] fo r Remo te with L o cal L o cko ut.
  • Page 153 Courtesy of http://BlackRadios.terryo.org SECTION 6 CIRCUIT DESCRIPTION...
  • Page 154 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Figure 6-1. Digital HF Receiver Functional Block Diagram CIRCUIT DESCRIPTION...

  • Page 155: W J-8711A Digital Hf Receiver Fun Ction Al Description

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER SECTION 6 CIRCUIT DESCRIPTION 6.1 W J-8711A DIGITAL HF RECEIVER FUN CTION AL DESCRIPTION The W J -8 7 1 1 A Dig ital HF Receiver is a Dig ital Sig nal Pro cessing (DSP) based receiver, co nsisting o f an analo g tuner, an IF dig itizer, dig ital sig nal pro cessing and analo g reco nstructio n circuitry, and fro nt panel co ntro l lo g ic.
  • Page 156 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER o peratio ns. The Dig ital Assembly accepts the 2 5 kHz IF sig nal fro m the RF Assembly, dig itizes the sig nal, and using Dig ital Sig nal Pro cessing (DSP) techniques, perfo rms the majo rity o f the sig nal pro cessing o peratio ns required to pro duce the final o utputs.

  • Page 157: Circuit Descriptio Ns

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 6.2 CIRCUIT DESCRIPTION S 6.2.1 RF ASSEM BLY, (A3) The RF Assembly (A3 ) functio ns as the RF tuner fo r the W J -8 7 1 1 A Dig ital HF Receiver.
  • Page 158 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Figure 6-2. RF Assembly Block Diagram CIRCUIT DESCRIPTION...
  • Page 159 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The 2 nd L O circuit pro duces a fixed 4 0 MHz o utput. It is pro duced by multiplying the 1 0 MHz reference sig nal by a facto r o f fo ur. The 4 0 MHz o utput is then pro vided to the 2 nd mixing stag e (U3 0 ) to pro duce 4 5 5 kHz 2 nd IF.
  • Page 160 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER After IF filtering and amplificatio n, the 4 0 .4 5 5 kHz IF sig nal is directed to the seco nd co nversio n stag e, via a vo ltag e co ntro lled attenuato r. This circuit pro vides co ntro l o ver the amplitude o f the sig nal to the pro per o utput level, preventing o verlo ading o f the analo g to dig ital co nverter stag e in the...
  • Page 161 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The REF SEN SE line (pin 1 4 ) pro vides an indicatio n when an external reference is co nnected at the rear panel EXT REF co nnecto r (A3 J 3 ). W hen an external reference is co nnected, it causes this line to assume a lo g ic "...

  • Page 162: Dig Ital Assembly, (A2 )

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 6.2.2 TYPE 797214 DIGITAL ASSEM BLY, (A2) The Dig ital Assembly (A2 ) co nsists o f three majo r o perating sectio ns: the Co ntro l and Interface sectio n; the Dig ital Sig nal Pro cessing sectio n; and the Reco nstructed Analo g Sectio n.
  • Page 163 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Figure 6-3. Digital Assembly Functional Block Diagram CIRCUIT DESCRIPTION...
  • Page 164 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER The o utputs fro m the Dig ital Sig nal Pro cessing sectio n co nsists o f serial data co ntaining a dig ital representatio n o f the receiver' s IF (limited to the selected IF bandwidth), and detected audio , multiplexed into a sing le data stream.
  • Page 165 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER heart o f the Co ntro l and Interface Sectio n is the 6 8 HC1 1 micro co ntro ller. It co ntinuo usly mo nito rs the receiver functio ns and pro vides co ntro l data to direct its o peratio n.

  • Page 166: Fro Nt Panel Assembly (A1 )

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER data to the RF Assembly, and the 1 2 .8 MHz clo ck fo r timing o f the analo g - to -dig ital co nversio n in the IF dig itizer. Three metho ds o f co ntro l o f the receiver o peratio n are suppo rted by the Co ntro l and Interface...
  • Page 167 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Figure 6-4. Front Panel Assembly Functional Block Diagram CIRCUIT DESCRIPTION 6-13...

  • Page 168: Po Wer Supply Assembly, (Ps1 )

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 6.2.4 POW ER SUPPLY ASSEM BLY, (PS1) The Po wer Supply, illustrated in the W J -8 7 1 1 A Dig ital HF Receiver Main Foldout FO -8 Chassis schematic diag ram, , pro vides the vo ltag es required fo r the pro per o peratio n o f the W J -8 7 1 1 A Receiver.
  • Page 169 Courtesy of http://BlackRadios.terryo.org SECTION 7 M AIN TEN AN CE...
  • Page 170 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K 7-ii...

  • Page 171: M Ain Ten An Ce

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER SECTION 7 M AIN TEN AN CE 7.1 GEN ERAL The W J -8 7 1 1 A Dig ital HF Receiver has been desig ned to o perate fo r extended perio ds o f time with a minimum o f ro utine maintenance. Cleaning , inspectio n and perfo rmance tests sho uld be perfo rmed at reg ular intervals, co nsistent with the facility' s no rmal scheduling and after repairs have been made.

  • Page 172: Test Equipment Required

    Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 7.4 TEST EQUIPM EN T REQUIRED Pro cedures fo r testing the W J -8 7 1 1 A Receiver have been develo ped fo r perfo rmance using a minimum o f co mmo n test equipment. The test Ta ble 7 -1 equipment listed in...
  • Page 173 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 7-1. Required Test Equipment Equipment Reco mmended Type Requirement Variable Frequency Elg ar 5 0 1 A Vo ltag e Rang e - 9 0 to 2 6 4 VAC Po wer So urce Frequency Rang e - 4 7 to 4 4 0 Hz Vo lt-Amp-Po wer Meter Clark-Hess 2 5 5...
  • Page 174 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Set the Sig nal G enerato r to pro duce a 1 .0 0 0 0 MHz o utput at a level o f -9 0 dBm. Set the g enerato r mo dulatio n fo r 4 0 0 Hz AM, 5 0 % mo dulatio n.
  • Page 175 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER W hile o bserving the fro nt panel, turn the receiver o n. Upo n po wer up, verify that all L EDs and seven seg ment displays will lig ht and are o f unifo rm brilliance.
  • Page 176 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 2031 LINE A + RF IN RF OUT SIGNAL EXT. REF INPUT. RECEIVER GENERATOR A3J1 AUDIO - 2031 SIGNAL TEXT GENERATOR FLUKE 1953A EXT. REF INPUT. 10 MHz CESIUM FREQ. STANDARD FREQUENCY COUNTER 87IL34 Figure 7-3.
  • Page 177 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 8 . W hile o bserving the frequency co unter display, slo wly increase and decrease the frequency o f g enerato r # 2 . Verify that the frequency displayed o n the frequency co unter chang es with chang es in the g enerato r frequency, indicating that the receiver timebase is lo cked to the external reference.
  • Page 178 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 6 . W hile o bserving the frequency co unter display, slo wly increase the receiver tuned frequency in 1 Hz, 1 0 Hz, 1 0 0 Hz, and 1 kHz steps. Verify that the mag nitude o f chang e o n the frequency co unter display tracks with the receiver tuned frequency chang es, maintaining a frequency that is 1 kHz g reater than the difference between the sig nal...
  • Page 179 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 7.6.6 W J-8711A SEN SITIVITY PERFORM AN CE TEST Co nnect the W J -8 7 1 1 A Receiver and test equipment as illustrated in Figure 7 -5 BOONTON 2031 IF OUT RF IN RF OUT 50 OHM...
  • Page 180 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Table 7-2. Receiver Sensitivity Performance Test Equipment Connection Sig . G en IF BW O utput L evel FM Mo d. (kHz) Co mmand (dBm) Mo dulatio n Frq/ Dev. 0 .3 0 BW S 1 <Return>...
  • Page 181 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 1 6 . Set the receiver fo r a .5 0 0 0 0 MHz tuned frequency [FRQ .5 <Return>], AG C Fast [AG C 2 <Return>], and select the FM Detectio n Mo de [DET 2 <Return>].
  • Page 182 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 2 7 . Tempo rarily remo ve the AC vo ltmeter and 6 0 0 -o hm lo ad fro m the L ine A o utput o f TB1 and co nnect them acro ss the + and - terminals o f the L ine B o utput.
  • Page 183 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER ± Verify that the detected audio level is 0 3 dBm, as indicated o n the analyzer vo ltmeter. N O TE: Due to a +1 0 dB o ffset o n the disto rtio n analyz er vo ltmeter, the +1 0 dB scale is used fo r a 0 dBm reading .
  • Page 184 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 7.6.8 SQUELCH/ M UTE PERFORM AN CE TEST Co nnect the W J -8 7 1 1 A Receiver and test equipment as illustrated in Figure 7 -7 2031 SQUELCH RF IN RF OUT SIGNAL OSCILLOSCOPE...
  • Page 185 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Set the squelch to -1 0 0 dBm [SQ L 1 0 0 <Return>] and set the sig nal g enerato r to pro duce a 1 5 .0 0 0 0 MHz AM mo dulated o utput, at a level o f -4 0 dBm.
  • Page 186 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Decrease the sig nal g enerato r o utput level to -1 1 5 dBm. Set the receiver to the Manual G ain mo de [ AG C 0 <Return> ] and set the manual g ain to maximum [ RFG 1 2 7 <Return>...
  • Page 187 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 7.6.10 RF/ IF SIGN AL PATH PERFORM AN CE TEST Co nnect the W J -8 7 1 1 A Receiver and test equipment as illustrated in Figure 7 -9 BOONTON 2031 RF IN RF OUT 50 OHM...
  • Page 188 Co ntact yo ur superviso r DRS Sig nal So lutio ns, Inc. prio r to breaking any facto ry applied inspectio n seals o n the unit to avo id the po ssibility o f vo iding the warranty.
  • Page 189 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER REAR FRONT 87IL69 Figure 7-10. Removing/ Replacing Receiver Top Cover 7.7.2 REPLACIN G THE RECEIVER TOP COVER Figure 7 -1 0 Refer to The fo llo wing pro cedures are used to replace the to p co ver o n the receiver.
  • Page 190 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Remo ve in-lime plug W 1 P1 (6 ) fro m S1 J 1 . (N o te: Tag o r mark plug fo r identificatio n purpo ses during replace pro cedures.) Remo ve fo ur screws (7 ) fro m the receiver fro nt panel (8 ).
  • Page 191 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER MEMORY/SCAN FREQUENCY POWER mSec STEP CHANNEL CHANNEL BLANKER DWELL SIZE VIEW EXECUTE +/- ZERO REMOTE STEP TUNE TUNE LOCK SCAN CHANNEL CHANNEL SCAN SCAN SETUP STORE INCLUDE IF BW DET MODE SQUELCH TYPE CHANNEL FREQUENCY...
  • Page 192 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER MEMORY/SCAN FREQUENCY POWER mSec STEP CHANNEL CHANNEL BLANKER DWELL SIZE VIEW EXECUTE +/- ZERO REMOTE STEP TUNE TUNE WJ-8711 HF RECEIVER LOCK SCAN CHANNEL CHANNEL SCAN SCAN SETUP INCLUDE STORE TYPE IF BW DET MODE SQUELCH CHANNEL...
  • Page 193 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER 7.7.7 DIGITAL CON TROL PC ASSEM BLY (A2) REM OVAL PROCEDURES WARNING This unit contains a RAM Integrated Circuit (A2U5) that includes an on-board lithium source used as back up power for memory retention. Extreme care should be used in storage, handling, and disposal of parts having lithium content.
  • Page 194 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER LINE 90 - 264 VAC PRESELECTOR 47 - 440 Hz 40 VA MAX GAITHERSBURG, MARYLAND USA OUTPUT INPUT FUSE A4J2 TYPE SERIAL 1 AMP SB A2J3 CSMA A2J2 A3J1 A3J2 A3J3 A2J1 87IL74 Figure 7-15.
  • Page 195 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Co nnect PS1 P2 (6 ) to J 5 o n the Dig ital Co ntro l PC Assembly (3 ). Co nnect A3 P1 (7 ) to J 4 o n the Dig ital Co ntro l PC Assembly (3 ). Replace the washer and nut o n co nnecto r A2 J 1 (2 ) o n the rear panel o f the receiver (1 ).
  • Page 196 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER REAR FL1J1 TUNER DIGITAL ASSEMBLY ASSEMBLY (A3) (A2) (UNDER RF SHIELD) COVER REMOVED POWER SUPPLY (PS1) FRONT PANEL ASSEMBLY (A1) FRONT 87IL77 Figure 7-18. RF Tuner Assembly (A3) Remove and Replace Procedures (Part 2) 7.7.11 POW ER SUPPLY ASSEM BLY (PS1) REM OVAL PROCEDURES Figure 7 -1 9 Figure 7 -2 0...
  • Page 197 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER FL1J1 REAR TUNER DIGITAL ASSEMBLY ASSEMBLY (A3) (A2) POWER COVER COVE SUPPLY REMOVED REMOV (PS1) FRONT PANEL ASSEMBLY (A1) FRONT 87IL78 Figure 7-19. Power Supply (PS1) Remove and Replace Procedures (Part 1) 87IL79 Figure 7-20.
  • Page 198 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Co nnect plug PS1 Pl2 to A2 J 5 (5 ) o n the Dig ital Co ntro l PC Assembly (1 ). Co nnect fuse (6 ) and co nnecting wire to FL 1 P1 . Co nnect in-line plug S1 P1 to PS1 J 1 (4 ).
  • Page 199 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER LINE 90 - 264 VAC PRESELECTOR 47 - 440 Hz 40 VA MAX GAITHERSBURG, MARYLAND USA OUTPUT INPUT FUSE A4J2 TYPE SERIAL 1 AMP SB A2J3 CSMA A2J2 A3J1 A3J2 A3J3 A2J1 87IL81 Figure 7-22.
  • Page 200 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Co mpo nent A2 U5 is a plug -in chip that furnishes battery po wer (V Batt) fo r the Dig ital Co ntro l PC Assembly (A2 ). U5 may require replacement as a result o f failure o f the battery, failure o f the o ther functio ns o f the chip, o r as a result o f preventive maintenance activities desig ned to perio dically replace the battery.
  • Page 201 Courtesy of http://BlackRadios.terryo.org SECTION 8 REPLACEM EN T PARTS LIST...
  • Page 202 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K 8-ii...
  • Page 203 8.3 PROVISION IN G N OTE - IN CON SISTEN CIES IN PART N UM BERIN G CON VEN TION S The internal co mputer applicatio ns at DRS Sig nal So lutio ns, Inc. have underg o ne upg rades to better serve o ur custo mers. W ith this upg rade came alteratio ns to the numbering scheme fo r parts repo rting to an end item.
  • Page 204 Campbell, CA 9 5 0 0 8 Do ver, N H 0 3 8 2 0 -1 5 0 7 1 4 6 3 2 DRS Sig nal So lutio ns, Inc. 0 J 9 4 8 Kemet Electro nics Co rp.
  • Page 205 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Mfr. Co de N ame and Address Co de N ame and Address 2 4 3 5 5 Analo g Devices Inco rpo rated 5 2 6 4 8 Plessey Semico nducto rs Ro ute 1 , Industrial Park 1 6 4 1 Kaiser Avenue P.O .
  • Page 206 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER Mfr. Co de N ame and Address Co de N ame and Address 6 2 7 8 6 Hitachi America, L TD. 8 1 6 4 0 EATO N Co rpo ratio n 1 8 0 0 Bering Drive Aero space and Co mmercial San J o se, CA 9 5 1 2 2...
  • Page 207 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER pa ra gra ph 8 .4 manufacturers, pro vided in , and the manufacturer' s part pa ra gra ph 8 .6 number, pro vided in , are supplied as a g uide to aid the user o f the equipment while in the field.
  • Page 208 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER N O TE: As impro ved semico nducto rs beco me available, it is the po licy o f the facto ry to inco rpo rate them in pro prietary pro ducts. Fo r this reaso n so me transisto rs, dio des and integ rated circuits installed in the equipment may no t ag ree with tho se specified in the parts list and schematic diag rams o f this manual.
  • Page 209 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR 8.6 TYPE W J-8711A DIGITAL HF RECEIVER M AIN CHASSIS Revisio n J 1 Fro nt Panel Assembly 7 9 7 0 1 5 -1 1 4 6 3 2 A1 A1...
  • Page 210 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR 8.6.1 TYPE 482108-1 FRON T PAN EL PC ASSEM BLY REF DESIG PREFIX A1A1 Revisio n H1 µ...
  • Page 211 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A1A1 Resisto r, Fixed, Film: 1 0 k Ω , 5 %, 1 / 8 W CF1 / 8 -1 0 K/ J 5 9 1 2 4 Thru...
  • Page 212 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A1A1 S1 4 Same as S5 S1 5 Same as S1 S1 6 Same as S1 S1 7 Same as S5 S1 8...
  • Page 213 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A1A1 U1 5 Integ rated Circuit, BUF, CMO S, HS Hex Schmt, Inv MM7 4 HC1 4 N 2 7 0 1 4 U1 6 Integ rated Circuit, CMO S, Dual D-F-F...
  • Page 214 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR 8.6.2A TYPE 797214-1 DIGITAL CON TROL PC ASSEM BLY REF DESIG PREFIX A2 Revisio n A N o t Used XBT1 N o t Used N o t Used...
  • Page 215 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C3 9 Same as C1 C4 0 Capacito r, Tantalum, 1 0 µ F, 2 0 %, 1 6 V 8 4 1 2 9 3 -1 6 1 4 6 3 2...
  • Page 216 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C8 2 Same as C4 9 C8 3 Same as C1 C8 4 Same as C1 C8 5 Same as C1...
  • Page 217 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C1 2 5 Capacito r, Ceramic, 1 8 0 pF, 2 % 8 4 1 4 1 6 -0 5 5 1 4 6 3 2 C1 2 6 Capacito r, Ceramic, 4 7 0 pF, 2 %...
  • Page 218 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C1 6 8 Same as C1 C1 6 9 Same as C1 C1 7 0 Same as C1 C1 7 1 Same as C5 6...
  • Page 219 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C2 1 1 Same as C1 C2 1 2 Same as C1 C2 1 3 Same as C1 C2 1 4 Same as C2 0...
  • Page 220 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 Same as J 4 Same as J 4 J 1 0 N o t Used J 1 1 Co nnecto r, PC,BD 3 Pin SHRD HDR 3 -1 0 2 2 0 2 -4...
  • Page 221 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 Same as Q 6 Q 1 0 Transisto r MMBT3 9 0 4 L T1 0 4 7 1 3 Q 1 1 Same as Q 8...
  • Page 222 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R4 0 Same as R7 R4 1 Same as R1 8 R4 2 Same as R7 R4 3 Same as R1 9...
  • Page 223 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R8 3 Same as R1 R8 4 Same as R1 R8 5 N o t Used R8 6 Same as R1 R8 7...
  • Page 224 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R1 2 6 Same as R1 8 R1 2 7 Same as R5 9 R1 2 8 Same as R7 R1 2 9...
  • Page 225 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R1 6 9 Resisto r, Fixed, 2 2 0 Ω , 5 % 8 4 1 4 1 4 -0 5 7 1 4 6 3 2 R1 7 0...
  • Page 226 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R2 1 2 Same as R1 R2 1 3 N o t Used R2 1 4 Same as R1 9 R2 1 5...
  • Page 227 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R2 5 5 Same as R7 R2 5 6 Same as R1 R2 5 7 Same as R1 R2 5 8 Same as R1...
  • Page 228 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R2 9 8 Same as R7 R2 9 9 N o t Used R3 0 0 N o t Used R3 0 1...
  • Page 229 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R3 4 1 Same as R2 4 7 R3 4 2 Same as R2 4 7 R3 4 3 Same as R2 R3 4 4...
  • Page 230 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 Integ rated Circuit, Micro co ntro ller,Micro co ntro ller MC6 8 G C1 1 A0 FN 0 4 7 1 3 Unit 1 6 -BIT Timer 8 Channel 8 -BIT So cket 5 2 -PO S PL CC .0 5 0 CTRS 1 .0 5 0 X .2 0 HT...
  • Page 231 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 U2 8 Same as U2 7 U2 9 Same as U2 3 U3 0 Integ rated Circuit,Synchro no us Binary Co unter with 7 4 HC1 6 1 SO 1 6 0 2 7 3 5...
  • Page 232 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 U6 1 Same as U5 2 U6 2 Same as U6 0 U6 3 Same as U5 2 U6 4 Same as U5 2...
  • Page 233 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR 8.6.2B TYPE 904978-1 DIGITAL CON TROL PC ASSEM BLY REF DESIG PREFIX A2 Revisio n D N o t Used XBT1 N o t Used N o t Used...
  • Page 234 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C3 9 Same as C1 C4 0 Capacito r, Tantalum, 1 0 µ F, 2 0 %, 1 6 V 2 9 3 D1 0 6 X0 0 1 6 C2 T 5 6 2 8 9...
  • Page 235 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C8 2 Same as C1 4 C8 3 Same as C1 C8 4 Same as C1 C8 5 Same as C1...
  • Page 236 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C1 2 5 Capacito r, Ceramic, 1 8 0 pF, 2 % 0 8 0 5 N 1 8 1 G 1 0 1 N TM 6 5 2 3 8 C1 2 6 Capacito r, Ceramic, 4 7 0 pF, 2 %...
  • Page 237 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C1 6 8 Same as C1 C1 6 9 Same as C1 C1 7 0 Same as C1 C1 7 1 Same as C7 2...
  • Page 238 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 C2 1 1 Same as C1 C2 1 2 Same as C1 C2 1 3 Same as C1 C2 1 4 Same as C2 0...
  • Page 239 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR C2 6 1 Capacito r, Ceramic, .3 3 0 pF, 2 %, 5 0 V C0 8 0 C3 3 1 G 1 G AC 3 1 4 3 3 N o t Used (SO T-2 3 ) Dio de/ Swpin Dual Swithcing Dio de Reverse Vo lltag e...
  • Page 240 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 Same as J 4 Same as J 4 J 1 0 N o t Used J 1 1 Co nnecto r, PC,BD 3 Pin SHRD HDR 3 -1 0 2 2 0 2 -4...
  • Page 241 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 Same as Q 6 Q 1 0 Transisto r MMBT3 9 0 4 L T1 0 4 7 1 3 Q 1 1 Same as Q 8...
  • Page 242 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R4 0 Same as R7 R4 1 Same as R1 8 R4 2 Same as R7 R4 3 Same as R1 9...
  • Page 243 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R8 3 Same as R1 R8 4 Same as R1 R8 5 N o t Used R8 6 Same as R1 R8 7...
  • Page 244 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R1 2 6 Same as R1 8 R1 2 7 Same as R3 R1 2 8 Same as R7 R1 2 9...
  • Page 245 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R1 6 9 Resisto r, Fixed, 2 2 0 Ω , 5 % CR0 8 0 5 -1 0 W -2 2 1 J T 0 XN 1 7 R1 7 0...
  • Page 246 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R2 1 2 Same as R1 R2 1 3 N o t Used R2 1 4 Same as R1 9 R2 1 5...
  • Page 247 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R2 5 5 Same as R7 R2 5 6 Same as R1 R2 5 7 Same as R1 R2 5 8 Same as R1...
  • Page 248 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R2 9 8 Same as R7 R2 9 9 N o t Used R3 0 0 N o t Used R3 0 1...
  • Page 249 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R3 4 1 Same as R2 4 7 R3 4 2 Same as R2 4 7 R3 4 3 Same as R2 R3 4 4...
  • Page 250 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 R3 8 4 Same as R2 4 7 R3 8 5 N o t Used R3 8 6 Same as R1 9 Switch/Dip SPST Side Actuated Dip...
  • Page 251 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 U2 4 Integ rated Circuit, CMO S,1 4 -Stag e Binary Ripple Co unter 7 4 HC4 0 2 0 SO 1 6 3 4 3 7 1 U2 5...
  • Page 252 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A2 U5 9 Integ rated Circuit, / CO N V D/ A 1 6 Bit Audio D/ A AD1 8 5 1 R 2 4 3 5 5 Co nverter...
  • Page 253 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR 8.6.3 TYPE 797006-1 RF TUN ER PC ASSEM BLY REF DESIG PREFIX A3 Revisio n N 1 N o t Used N o t Used Capacito r, Ceramic: .0 1...
  • Page 254 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 C4 9 Capacito r, Ceramic: 4 7 0 pF, 5 %, 5 0 V N PO 8 4 1 4 1 5 -0 1 1 1 4 6 3 2 C5 0...
  • Page 255 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 C9 9 Same as C3 C1 0 0 N o t Used C1 0 1 Same as C3 C1 0 2 Thru...
  • Page 256 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 C1 5 9 Same as C3 C1 6 0 Same as C1 2 C1 6 1 Same as C1 2 C1 6 2...
  • Page 257 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 C2 0 3 Same as C4 7 C2 0 4 Same as C1 2 µ...
  • Page 258 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 C2 5 3 Thru Same as C3 C2 5 5 C2 5 6 Capacito r, Tantalum: 6 8 µ...
  • Page 259 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 C2 9 6 Same as C3 C2 9 7 Same as C3 C2 9 8 Same as C3 C2 9 9 Same as C1 1...
  • Page 260 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 C3 4 3 Same as C1 2 C3 4 4 Same as C6 3 C3 4 5 Same as C1 2 C3 4 6...
  • Page 261 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 CR1 4 Same as CR1 CR1 5 Same as CR2 CR1 6 Same as CR2 CR1 7 Same as CR1 CR1 8...
  • Page 262 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 L 1 5 Thru Same as L 5 L 1 7 L 1 8 Inducto r: 2 7 0 µ...
  • Page 263 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 L 5 9 Same as L 2 9 L 6 0 Inducto r: 4 7 0 nH, ±...
  • Page 264 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 Q 3 3 Thru Same as Q 3 2 Q 3 5 Q 3 6 Same as Q 2 Q 3 7 Transisto r...
  • Page 265 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R2 8 Same as R1 0 Ω R2 9 Resisto r, Fixed: 6 8 k , 5 %, 1 / 1 0 W 8 4 1 4 1 4 -1 1 7 1 4 6 3 2...
  • Page 266 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R7 4 Same as R5 2 R7 5 Same as R3 4 R7 6 Same as R8 R7 7 Same as R1 1...
  • Page 267 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R1 1 7 Resisto r, Fixed: 4 7 Ω , 5 %, 1 / 1 0 W 8 4 1 4 1 4 -0 4 1 1 4 6 3 2 R1 1 8...
  • Page 268 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R1 6 0 Same as R2 1 R1 6 1 Same as R2 1 R1 6 2 Same as R5 2 R1 6 3...
  • Page 269 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R2 0 3 Same as R5 2 R2 0 4 Same azs R1 1 7 R2 0 5 Same as R4 4 R2 0 6...
  • Page 270 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R2 4 9 Resisto r, Fixed: 5 .6 k Ω , 5 %, 1 / 1 0 W 8 4 1 4 1 4 -0 9 1 1 4 6 3 2 R2 5 0...
  • Page 271 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R2 9 3 Same as R1 0 R2 9 4 Same as R4 R2 9 5 Same as R4 4 R2 9 6...
  • Page 272 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R3 3 6 Same as R1 7 3 R3 3 7 Same as R5 2 R3 3 8 Same as R1 0 4 R3 3 9...
  • Page 273 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 R3 3 6 Same as R1 7 3 R3 3 7 Same as R5 2 R3 3 8 Same as R1 0 4 R3 3 9...
  • Page 274 Courtesy of http://BlackRadios.terryo.org W J-8711A DIGITAL HF RECEIVER M AN UFACTURERS M FR. RECM DESIG DESCRIPTION ASSY PART N O. CODE VEN DOR REF DESIG PREFIX A3 Integ rated Circuit 8 6 7 4 HC0 8 SO 1 4 U 1 4 6 3 2 Integ rated Circuit 8 6 7 4 HC3 2 SO 1 4 U...
  • Page 275 Courtesy of http://BlackRadios.terryo.org FOLDOUTS FP-i...
  • Page 276 Courtesy of http://BlackRadios.terryo.org THIS PAGE IN TEN TION ALLY LEFT BLAN K FP-ii...
  • Page 277 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R 1 6 . 8 8 1 5 . 0 6 N O T E S 1 3 .
  • Page 278 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F R E Q U E N C Y M H z M E M O R Y / S C A N P O W E R S I G N A L L E V E L...
  • Page 279 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R 1 . S T O R I N G C H A N N E L S I N M E M O R Y T h e f o l l o w i n g s t e p s a r e a n e x a m p l e o f t h e p r o c e d u r e n e c e s s a r y t o s t o r e p a r a m e t e r s i n a m e m o r y c h a n n e l f o r u s e d u r i n g a c h a n n e l s c a n o p e r a t i o n .
  • Page 280 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R 2 . S E T U P T H E C H A N N E L S C A N O P E R A T I O N 3 .
  • Page 281 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R 4 . S K I P P I N G A C H A N N E L D U R I N G C H A N N E L S C A N E X E C U T I O N 5 .
  • Page 282 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R 2 . E X E C U T I N G T H E F 1 F 2 S C A N 1 .
  • Page 283 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R 3 . L O C K I N G A F R E Q U E N C Y O U T O F T H E F 2 S C A N 4 .
  • Page 284 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 5 . T y p e 7 9 7 0 0 6 - X R F T u n e r A s s e m b l y ( A 3 ) , S c h e m a t i c D i a g r a m 5 8 1 2 7 4 ( S h e e t 1 o f 3 ) ( V ) F P - 1 5 / ( F P - 1 6 b l a n k )
  • Page 285 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 5 . T y p e 7 9 7 0 0 6 - X R F T u n e r A s s e m b l y ( A 3 ) , S c h e m a t i c D i a g r a m 5 8 1 2 7 4 ( S h e e t 2 o f 3 ) ( V )
  • Page 286 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 5 . T y p e 7 9 7 0 0 6 - X R F T u n e r A s s e m b l y ( A 3 ) , S c h e m a t i c D i a g r a m 5 8 1 2 7 4 ( S h e e t 3 o f 3 ) ( V ) F P - 1 9 / ( F P - 2 0 b l a n k )
  • Page 287 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 6 . T y p e 7 9 7 2 1 4 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 5 8 1 8 3 9 ( S h e e t 1 o f 4 ) ( F ) F P - 2 1 / ( F P - 2 2 b l a n k )
  • Page 288 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 6 . T y p e 7 9 7 2 1 4 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 5 8 1 8 3 9 ( S h e e t 2 o f 4 ) ( F ) F P - 2 3 / ( F P - 2 4 b l a n k )
  • Page 289 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 6 . T y p e 7 9 7 2 1 4 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 5 8 1 8 3 9 ( S h e e t 3 o f 4 ) ( F ) F P - 2 5 / ( F P - 2 6 b l a n k )
  • Page 290 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 6 . T y p e 7 9 7 2 1 4 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 5 8 1 8 3 9 ( S h e e t 4 o f 4 ) ( F ) F P - 2 7 / ( F P - 2 8 b l a n k )
  • Page 291 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H . R E C E I V E R . O - 6 A . T y p e 9 0 4 9 7 8 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 9 0 4 9 8 1 ( S h e e t 1 o f 4 ) ( D ) .
  • Page 292 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H . R E C E I V E R . O - 6 A . T y p e 9 0 4 9 7 8 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 9 0 4 9 8 1 ( S h e e t 2 o f 4 ) ( D ) .
  • Page 293 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H . R E C E I V E R . O - 6 A . T y p e 9 0 4 9 7 8 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 9 0 4 9 8 1 ( S h e e t 3 o f 4 ) ( D ) .
  • Page 294 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H . R E C E I V E R . O - 6 A . T y p e 9 0 4 9 7 8 - 1 D i g i t a l C o n t r o l A s s e m b l y ( A 2 ) , S c h e m a t i c D i a g r a m 9 0 4 9 8 1 ( S h e e t 4 o f 4 ) ( D ) .
  • Page 295 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 7 . T y p e 4 8 2 1 0 8 - 1 F r o n t P a n e l C i r c u i t C a r d A s s e m b l y ( A 2 A 1 ) , S c h e m a t i c D i a g r a m 5 8 1 2 6 7 ( S h e e t 1 o f 2 ) ( F ) F P - 2 9 / ( F P - 3 0 b l a n k )
  • Page 296 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R M H Z R F I N P U T K H Z F O - 7 .
  • Page 297 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 8 . T y p e W J - 8 7 1 1 A D i g i t a l H F R e c e i v e r , M a i n C h a s s i s S c h e m a t i c D i a g r a m 5 8 1 6 5 0 ( S h e e t 1 o f 3 ) ( G ) F P - 3 3 / ( F P - 3 4 b l a n k )
  • Page 298 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 8 . T y p e W J - 8 7 1 1 A D i g i t a l H F R e c e i v e r , M a i n C h a s s i s S c h e m a t i c D i a g r a m 5 8 1 6 5 0 ( S h e e t 2 o f 3 ) ( G ) F P - 3 5 / ( F P - 3 6 b l a n k )
  • Page 299 Courtesy of http://BlackRadios.terryo.org W J - 8 7 1 1 A D I G I T A L H F R E C E I V E R F O - 8 . T y p e W J - 8 7 1 1 A D i g i t a l H F R e c e i v e r , M a i n C h a s s i s S c h e m a t i c D i a g r a m 5 8 1 6 5 0 ( S h e e t 3 o f 3 ) ( G ) F P - 3 7 / F P - 3 8 b l a n k )

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