Ten-Tec_RX-340_serv_user_other.pdf

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1、TECHNICAL MANUAL OPERATION, MAINTENANCE, INSTALLATION INSTRUCTIONS AND ILLUSTRATED PARTS BREAKDOWN HF DSP RECEIVER MODEL RX-340 TEN-TEC, INC. 1185 DOLLY PARTON PARKWAY SEVIERVILLE, TN 37862 THIS MANUAL WAS PREPARED IN ACCORDANCE WITH MIL-HDBK- 1221 TEN-TEC RX340 AUX/AUDIO OUTPUT PINS Wiring for 15 p

2、in male D type plug; Pin 1 - Ground Pin 2 - Mono audio output (AC coupled audio. Decoupled through a pair of back to back 33 f capacitors). Pin 3 - Audio line output B Pin 4 - Audio line output BCT Pin 5 - Audio line output B+ Pin 6 - Audio line output A Pin 7 - Audio line output ACT Pin 8 - Audio l

3、ine output A+ Pin 9 - Ground Pin 10 - Mono audio output (DC coupled audio. Resistive connection straight from audio amplifier). Pin 11 - Mute Pin 12 - User function Pin 13 - User function Pin 14 - User function Pin 15 - User function For most normal audio output applications use the mono AC coupled

4、audio output on pin 2 with pin 1 as ground. This will give up to 10 mW output into a 600 ohm load. For more specific applications where the full audio frequency bandwidth is required (i.e. certain data decoding uses), use the mono DC coupled audio output on pin 10. Do not use this output to connect

5、to any equipment with any appreciable amount of DC voltage floating on its input connection. Output is 10 mW into 600 ohm. Two balanced line outputs are provided giving a 0 dBm level / 600 ohm. Line output A and B give the same audio output in all modes except ISB where A gives the USB signal and B

6、the LSB signal. These two outputs have their own independent output transformers so arc isolated from each other and from any ground connection. For most purposes (e.g., for a stereo tape recorder), wire the center and ground of one RCA/phono to B+ and B- respectively for one channel and the center

7、and ground of another to A+ and A- respectively. In addition, a transformer centre tap is provided on each line output (ACT and BCT) where balanced line output is required. Refer to manual sections: 1-4 for interface connections. 3-4 (fig 3-5) for connections. 10-33/34 for circuit wiring details. RE

8、CORD OF CHANGES CHANGE NO. DATE TITLE OR BRIEF DESCRIPTION ENTERED BY WARNING HIGH VOLTAGE is used in the operation of this equipment. DEATH ON CONTACT may result if personnel fail to observe safety precautions. Learn the areas containing high voltage within the equipment. Be careful not to contact

9、high voltage connections when installing, operating or maintaining this equipment. Before working inside the equipment, turn power and ground points of high potential OFF before touching them. TABLE OF CONTENTS PARAGRAPH PAGE LIST OF ILLUSTRATIONS v LIST OF TABLES vii INTRODUCTION viii 1. GENERAL IN

10、FORMATION 1-1 PURPOSE AND FUNCTION 1-1 1-2 SPECIFICATIONS 1-5 1-3 ENVIRONMENTAL CONDITIONS 1-9 1-4 MECHANICAL 1-10 1-5 EQUIPMENT/PARTS SUPPLIED 1-11 2. PREPARATION FOR USE AND INSTALLATION 2-1 UNPACKING AND INSPECTION 2-1 2-2 MOUNTING 2-1 2-3 POWER 2-1 2-4 ANTENNA 2-1 2-5 IF OUT 2-1 2-6 SIG MON 2-1

11、2-7 1ST MIXER OUT 2-1 2-8 2ND MIXER OUT 2-1 2-9 EXT REFERENCE 2-1 2-10 RS-232 2-2 2-11 LINE A 2-2 2-12 LINE B 2-2 2-13 AUDIO 2-2 2-14 DC DOUPLED AUDIO 2-2 2-15 AUX OUTPUT 2-2 2-16 MONO HEADPHONE 2-2 2-17 ISB HEADPHONE 2-2 2-18 CHASSIS GROUND 2-2 3. GENERAL THEORY OF OPERATION 3-1 INTRODUCTION 3-1 3-

12、2 PRESELECTOR (81878) 3-1 3-3 PREAMP/ATTN 3-1 3-4 FIRST MIXER (81823) 3-6 3-5 SECOND MIXER/THIRD LOCAL OSCILLATOR (81817) 3-6 3-6 CONVERTER I/O BOARD (81790) 3-7 3-7 FIRST LO SYNTHESIZER (81772) 3-8 3-8 SECOND LOCAL OSCILLATOR (81772) 3-8 i TABLE OF CONTENTS continued PARAGRAPH PAGE 3. GENERAL THEOR

13、Y OF OPERATION continued 3-9 10 MHz REFERENCE OSCILLATOR (81772) 3-9 3-10 DSP/CPU (81807) 3-9 3-11 FRONT PANEL CPU (81819) 3-10 3-12 KEYPAD BOARD (81820) 3-11 3-13 LOGIC BOARD CPU INTERCONNECTIONS 3-11 4. LOCAL OPERATION 4-1 INTRODUCTION 4-1 4-2 FRONT PANEL OVERVIEW 4-1 4-3 MAIN TUNING KNOB 4-2 4-4

14、LOCK BUTTON 4-2 4-5 STEP BUTTONS 4-2 4-6 MODE BUTTONS 4-3 4-7 BITE BUTTONS 4-3 4-8 /+ AND /- BUTTONS 4-3 4-9 ATTN/PREAMP BUTION 4-4 4-10 MANUAL GAIN KNOB 4-4 4-11 REMOTE BUTTON 4-4 4-12 ISB SPEAKER SOURCE BUTTON 4-5 4-13 SPEAKER KNOB 4-5 4-14 PHONES KNOB 4-5 4-15 AUXILIARY PARAMETER OVERVIEW 4-5 4-1

15、6 BANDWIDTH (BW) BUTTON 4-6 4-17 BEAT FREQUENCY OSCILLATOR (BFO) BUTTON 4-7 4-18 PASSBAND (PBT) BUTTON 4-8 4-19 DUMP BUTTON 4-9 4-20 AUTOMATIC GAIN CONTROL (AGC) BUTTON 4-9 4-21 NOTCH BUTTON 4-10 4-22 SQUELCH (SQL) BUTTON 4-11 4-23 NOISE BLANKER (NB) BUTTON 4-12 4-24 OPT-1 BUTTON 4-12 4-25 OPT-2 BUT

16、TON 4-12 4-26 MEMORY/SCAN OVERVIEW 4-12 4-27 STORE THE CURRENT OPERATING FREQUENCY IN A SPECIFIED CHANNEL (0-100) 4-13 4-28 STORE THE CURRENT OPERATING FREQUENCY IN THE LOWEST EMPTY CHANNEL NUMBER 4-14 4-29 STORE THE CURRENT OPERATING FREQUENCY IN THE SCRATCHPAD MEMORY 4-15 4-30 TO RECALL A SPECIFIC

17、 CHANNEL FROM MEMORY 4-15 ii TABLE OF CONTENTS continued PARAGRAPH PAGE 4. LOCAL OPERATION continued. 4-31 USING THE SCROLL FUNCTION TO PREVIEW THE CHANNEL MENU 4-16 4-32 USING THE TUNE FUNCTION TO ACCESS FREQUENCIES FROM THE CHANNEL MENU 4-17 4-33 CLEARING OCCUPIED CHANNELS TO CREATE EMPTY CHANNELS

18、 4-18 4-34 SCAN MODE PRIMER 4-18 4-35 TO SETUP A PSCAN (PROGRAMMED F1 F2) FREQUENCY SWEEP 4-20 4-36 INITIATING SCAN 4-23 4-37 FREQUENCY LOCKOUTS 4-23 4-38 TO SET UP A MEMORY/SCAN FREQUENCY SWEEP 4-25 4-39 INITIATING MSCAN 4-28 4-40 LOCKING OUT MSCAN CHANNELS 4-29 4-41 PAUSING AND RESTARTING SCANS 4-

19、29 5. DETAILED OPERATING INSTRUCTIONS 5-1 MULTI-DROP NETWORK 5-1 5-2 RECEIVER CONTROL 5-2 5-3 RECEIVER RESPONSE COMMANDS 5-3 5-4 RECEIVER CONTROL COMMANDS 5-3 5-5 RX-340 RECEIVER MEMORY COMMAND SET 5-9 5-6 RX-340 RECEIVER QUERY COMMAND SET 5-9 5-7 RX-340 RECEIVER BITE 5-11 5-8 DSP DATA OUTPUT 5-11 5

20、-9 SCAN OPERATION 5-12 5-10 SECURITY FUNCTIONS 5-14 6. MAINTENANCE INSTRUCTIONS 6-1 INTRODUCTION 6-1 6-2 CLEANING AND LUBRICATION 6-1 6-3 TROUBLESHOOTING 6-1 6-4 INSPECTION 6-1 6-5 PERFORMANCE VERIFICATION TEST FOR MODEL RX- 340 6-1 6-5.1 TEST EQUIPMENT REQUIRED FOR MODEL RX-340 6-1 6-5.2 FUNCTIONAL

21、 TESTS FOR MODEL RX-340 6-2 7. PREPARATION FOR SHIPMENT OR STORAGE 7-1 PREPARATION FOR RESHIPMENT 7-1 7-2 PREPARATION FOR STORAGE 7-1 iii TABLE OF CONTENTS continued PARAGRAPH PAGE 8. SINGLE SOURCE PARTS LIST 8-1 INTRODUCTION 8-1 9. FINAL ASSEMBLY MODEL RX-340 9-1 INTRODUCTION 9-1 10. ILLUSTRATIONS

22、AND PARTS LIST 10-1 INTRODUCTION 10-1 iv LIST OF ILLUSTRATIONS FIGURE PAGE 1-1 RX-340 FRONT VIEW 1-3 1-2 RX-340 REAR VIEW 1-4 3-1 RX-340 TOP VIEW 3-2 3-2 RX-340 FRONT PANEL REAR VIEW 3-3 3-3 RX-340 BOTTOM VIEW 3-4 3-4 RX-340 INTERCONNECT DIAGRAM 3-5 5-1 CONNECTION DIAGRAM 5-2 5-2 CONFIGURATION DIAGR

23、AM 5-15 5-3 SERIAL/PARALLEL INTERFACE 5-16 5-4 DB-25 PIN ASSIGNMENTS 5-17 10-1 MODEL RX-340 BLOCK DIAGRAM 10-2 10-2 LOGIC BOARD BLOCK DIAGRAM 10-3 10-3 SYNTHESIZER BLOCK DIAGRAM 10-4 10-4 81878 CIRCUIT TRACE TOP 10-5 10-5 81878 CIRCUIT TRACE BOTTOM 10-6 10-6 81878 RX PRESELECTOR TOP COMPONENT LAYOUT

24、 10-7 10-7 81878 RX PRESELECTOR BOTTOM COMPONENT LAYOUT 10-8 10-8 81878 RX PRESELECTOR SCHEMATIC 10-9 10-9 81823 SMD 1ST MIXER TOP CIRCUIT TRACE 10-13 10-10 81823 SMD 1ST MIXER BOTTOM CIRCUIT TRACE 10-14 10-11 81823 SMD 1ST MIXER TOP COMPONENT LAYOUT 10-15 10-12 81823 SMD 1ST MIXER BOTTOM COMPONENT

25、LAYOUT 10-16 10-13 81823 SMD 1ST MIXER SCHEMATIC 10-17 10-14 81817 SMD 2ND MIXER/IF TOP CIRCUIT TRACE 10-19 10-15 81817 SMD 2ND MIXER/IF BOTTOM CIRCUIT TRACE 10-20 10-16 81817 SMD 2ND MIXER/IF TOP COMPONENT LAYOUT 10-21 10-17 81817 SMD 2ND MIXER/IF BOTTOM COMPONENT LAYOUT 10-22 10-18 81817 SMD 2ND M

26、IXER/IF SCHEMATIC 10-23 10-19 81790 SMD CONVERTER I/O TOP CIRCUIT TRACE 10-26 10-20 81790 SMD CONVERTER I/O BOTTOM CIRCUIT TRACE 10-27 10-21 81790 SMD CONVERTER I/O BOARD TOP COMPONENT LAYOUT 10-28 10-22 81790 SMD CONVERTER I/O BOARD BOTTOM COMPONENT LAYOUT 10-29 10-23 81790 SMD CONVERTER I/O BOARD

27、SCHEMATIC 10-30 10-24 81772 TCXO TOP CIRCUIT TRACE - SYNTHESIZER 10-33 10-25 81772 TCXO INNER CIRCUIT TRACE - SYNTHESIZER 10-34 10-26 81772 TCXO BOTTOM CIRCUIT TRACE - SYNTHESIZER 10-35 10-27 81772 TCXO TOP COMPONENT LAYOUT - SYNTHESIZER 10-36 10-28 81772 TXCO BOTTOM COMPONENT LAYOUT- SYNTHESIZER 10

28、-37 v LIST OF ILLUSTRATIONS continued FIGURE PAGE 10-29 81772 TCXO SYNTHESIZER SCHEMATIC 10-38 10-30 81824 POWER SUPPLY FILTER TOP CIRCUIT TRACE 10-42 10-31 81824 POWER SUPPLY FILTER BOTTOM CIRCUIT TRACE 10-43 10-32 81824 POWER SUPPLY FILTER COMPONENT LAYOUT 10-44 10-33 81824 POWER SUPPLY FILTER SCH

29、EMATIC 10-45 10-34 81807 DSP/CPU TOP CIRCUIT TRACE 10-47 10-35 81807 DSP/CPU BOTTOM CIRCUIT TRACE 10-48 10-36 81807 DSP/CPU COMPONENT LAYOUT 10-49 10-37 81807 DSP/CPU SCHEMATIC (page 1 of 2) 10-50 10-38 81807 DSP/CPU SCHEMATIC (page 2 of 2) 10-51 10-39 81819 FRONT PANEL CPU TOP CIRCUIT 10-53 10-40 8

30、1819 FRONT PANEL CPU BOTTOM CIRCUIT 10-54 10-41 81819 FRONT PANEL CPU TOP COMPONENTS 10-55 10-42 81819 FRONT PANEL CPU BOTTOM COMPONENTS 10-56 10-43 81819 FRONT PANEL CPU SCHEMATIC 10-57 10-44 81820 KEYPAD BOARD TOP CIRCUIT 10-61 10-45 81820 KEYPAD BOARD BOTTOM CIRCUIT 10-62 10-46 81820 KEYPAD BOARD

31、 TOP COMPONENTS 10-63 10-47 81820 KEYPAD BOARD BOTTOM COMPONENTS 10-64 10-48 81820 KEYPAD BOARD SCHEMATIC 10-65 vi LIST OF TABLES TABLE PAGE 8-1 MODEL RX-340 SINGLE SOURCE PARTS LIST 8-1 8-2 PART MANUFACTURERS INFORMATION 8-3 9-1 RX-340 MODULES 9-1 9-2 FINAL ASSEMBLY REPLACEABLE PARTS 9-2 10-1 81878

32、 RX PRESELECTOR PARTS LIST 10-11 10-2 81823 1ST MIXER PARTS LIST 10-18 10-3 81817 2ND MIXER/IF PARTS LIST 10-24 10-4 81790 CONVERTER I/O BOARD PARTS LIST 10-31 10-5 81772 SYNTHESIZER PARTS LIST 10-39 10-6 81824 POWER SUPPLY FILTER PARTS LIST 10-46 10-7 81807 DSP/CPU BOARD PARTS LIST 10-52 10-8 81819

33、 FRONT PANEL CPU BOARD PARTS LIST 10-59 10-9 81820 KEYPAD BOARD PARTS LIST 10-67 10-10 RECORD OF CHANGES 10-68 vii INTRODUCTION This technical manual provides operation and maintenance instructions for the RX-340 HF DSP Receiver. The manual was prepared in accordance with MIL-HDBK- 1221, “Department

34、 of Defense Handbook for Evaluation of Commercial Off-The-Shelf (COTS) Manuals.” It is organized into ten chapters along with a Table of Contents, List of Illustrations, and List of Tables. Chapter 1 presents general information about the Receiver, which includes functional capabilities, performance

35、 specifications, and physical dimensions. Chapter 2 provides information concerning the unpacking and initial installation of the receiver. A general theory of operation is provided in Chapter 3 which describes the functioning of the Receivers individual circuit boards. Chapter 4 provides detailed d

36、escriptions of all front- panel operating controls, plus complete instructions for local operation. Chapter 5 contains information on operation of the multi-drop RS-232 Interface and the Parallel Data Output. Chapter 6 provides information on maintenance and troubleshooting measures to be employed a

37、t the users level. Instructions pertaining to the reshipment or long term storage are provided in Chapter 7. A detailed list of unique single-source parts is provided in Chapter 8. In addition, Chapter 8 contains a list of manufacturers for these parts and their addresses. Chapter 9 provides a listi

38、ng of replaceable modules and parts. Chapter 10 contains detailed parts lists for each of the replaceable modules. Chapter 10 also contains schematic diagrams for the electronic circuits. viii 1-1 GENERAL INFORMATION 1-1 PURPOSE AND FUNCTION: The TEN TEC RX-340 is an all-mode, general- coverage rece

39、iver that delivers military-grade performance at off- the-shelf commercial pricing. Powerful digital signal processing (DSP) and over 60,000 lines of intensive code provide a level of performance and flexibility unattainable with conventional analog circuitry. The RX-340 may be controlled locally fr

40、om the front panel, or operated remotely through a RS-232 interface. Knobs, switches, and displays are arranged ergonomically into four intuitive control groups. Frequency, Mode, and Tuning Rate are presented in 12.5mm blue-green fluorescent characters on the receivers main alphanumeric display. Ope

41、rating frequency is controlled by direct keypad entry or by a weighted main tuning knob, with continuous coverage from below 50 kHz to 30 MHz. Ten step-tuning rates are provided (from 1 Hz to 1 MHz) to accommodate a wide range of tuning requirements. Display resolution is 1 Hz, and frequency stabili

42、ty is 3 ppm over an operating range of 0-50 degrees C. In addition to manual tuning, 100 channel memories are provided to retain and recall operating frequency, mode, and other basic operating parameters. Sophisticated programmable Memory-Scan (MScan) and F1-F2 frequency-scan (PScan) modes are also

43、provided, along with up to 100 frequency-lockouts and a rapid-access scratchpad memory. A two-line alphanumeric display provides continuous presentation of the receivers Memory/Scan status, and a dedicated Memory/Scan knob facilitates menu management and scan programming. Signal amplification, filte

44、ring, and processing are divided between analog and digital circuitry. Analog features include 1/2-octave front-end filters, ruggedized balanced mixers, and triple-conversion design to ensure wide dynamic range and superior rejection of unwanted signals. A sophisticated multistage Automatic Gain Con

45、trol (AGC) system provides 80 dB of control range ahead of the A-to-D converters plus an additional 40 dB in DSP. A switchable attenuator and preamp expand signal-handling range to over 140 dB. Digitally-controlled operating parameters include an adjustable, offset beat-frequency oscillator (BFO), v

46、ariable passband tuning (PBT), tunable notch filter (Notch), wide- range squelch (SQL), and a variable noise blanker (NB). An extensive bandwidth (BW) menu provides 57 standard-shape DSP filters ranging from 100 Hz to 16 kHz, plus an added selection of fast filters for enhanced reception of delay-cr

47、itical digital modes such as SITOR. Three preset AGC rates (Fast, Medium, and Slow) are provided, along with a unique Program Mode that supports fully-adjustable Attack, Hang, and Decay settings. A momentary AGC-cancel switch (Dump) instantly restores full receiver sensitivity on demand. A dedicated

48、 two-line alphanumeric display continuously presents operating- parameter status, and a companion Aux Parameters knob adjusts selected operating characteristics. 1-2 Detection modes include USB, LSB, ISB, CW, CW1, NBFM, AM, and Synchronous AM, with selectable sidebands. SAM significantly reduces fad

49、ing and adjacent-channel interference on AM signals. Separate headphone and speaker gain controls adjust listening level (speaker-level audio is routed to a built-in 4-inch speaker and a switchable external-speaker jack). An AF-channel selector routes upper, lower, or both sideband channels to the speaker line in ISB and SAM modes. In addition, balanced and unbalanced line-level outputs ar