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Miteq DN-14-12 Operation And Maintenance Manual

Frequency translator
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Ref.: XXXXX
OPERATION AND MAINTENANCE MANUAL
FOR
DN-14-12 FREQUENCY TRANSLATOR
MAY 2004
CUSTOMER
MAXXXXXT
119668B
Rev.B

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  • Page 1 Ref.: XXXXX OPERATION AND MAINTENANCE MANUAL DN-14-12 FREQUENCY TRANSLATOR MAY 2004 CUSTOMER MAXXXXXT 119668B Rev.B...
  • Page 2 The suffix XXXXX following part numbers in this manual is a unique number assigned at time of order. This number should be referred to in all correspondence and all referrals to spare parts. The reference number is XXXXX. The DN-14-12 Frequency Translator has been supplied with the following options: A. AC Voltage Input: XXX VAC...
  • Page 3 TABLE OF CONTENTS SECTION 1 INTRODUCTION Paragraph Page GENERAL DESCRIPTION ................1.1.1 PHYSICAL ..................1.1.2 FUNCTIONAL ..................EQUIPMENT CHARACTERISTICS ..............1.2.1 PHYSICAL ..................1.2.2 FUNCTIONAL ..................EQUIPMENT REQUIRED................1.3.1 EQUIPMENT SUPPLIED ..............1.3.2 EQUIPMENT REQUIRED BUT NOT SUPPLIED ........ SECTION 2 INSTALLATION UNPACKING, STORAGE, RESHIPMENT ............

  • Page 4: Table Of Contents

    TABLE OF CONTENTS (Cont.) SECTION 4 PRINCIPLES OF OPERATION Paragraph Page INTRODUCTION .................... FUNCTIONAL DESCRIPTION................ SUBSYSTEMS AND COMPONENTS FUNCTIONAL DESCRIPTION.... 4.3.1 SIGNAL PATH ..................4.3.1.1 Input Isolator (A2A1) ..............4.3.1.1.1 Option 1 - Input Attenuator, Isolator (A2A8, A2A9)....4.3.1.1.2 Option 2 - Input Filter, Isolator (A2A10, A2A11) ....4.3.1.2 Mixer (A2A2)................

  • Page 5: Introduction

    TABLE OF CONTENTS (Cont.) SECTION 5 MAINTENANCE Paragraph Page INTRODUCTION .................... PREVENTIVE MAINTENANCE ..............5.2.1 DC VOLTAGE ..................5.2.2 CONVERSION LOSS OF THE TRANSLATOR ........5.2.3 FREQUENCY MEASUREMENT ............5.2.4 LOCAL OSCILLATOR PHASE LOCK TEST POINT (Phase Voltage) . CORRECTIVE MAINTENANCE ..............5.3.1 POWER SUPPLY MALFUNCTION .............
  • Page 6 TABLES Number Page Equipment Supplied..................Test Equipment Required But Not Supplied............ External Connections..................Parts List - DN-14-12 Frequency Translator............ List of Diagrams....................FIGURES Front View, DN-14-12 Frequency Translator........... Rear View, DN-14-12 Frequency Translator ........... Interior View, DN-14-12 Frequency Translator..........Block Diagram, DN-14-12 Frequency Translator..........
  • Page 7 INTRODUCTION 1.1 GENERAL DESCRIPTION 1.1.1 PHYSICAL The following is a general description of the DN-14-12 Frequency Translator. The main chassis houses all RF components, control circuitry and power supplies. The following items are found on the front of the Translator: •...
  • Page 8 Local Oscillator Out-of-Lock Alarm A4A1 Level Control RF Input RF Output Local Oscillator A1A2 Test Points DC Voltage AC Power Test Points Mechanical Tune Access On/Off Phase Lock Source A3A2 Switch Phase Lock Voltage Figure 1-1. Front View, DN-14-12 Translator...
  • Page 9 A1A1 AC Voltage Input/Fuse Ground Figure 1-2. Rear View, DN-14-12 Translator...
  • Page 10 A1A3 A1A1 A1A2 A3A1 A3A2 A1A4 A2A6 A2A7 A2A5 A2A3 A3A3 A2A1 A2A4 A2A2 A3A4 A3A5 Figure 1-3. Interior View, DN-14-12 Translator...

  • Page 11: Equipment Characteristics

    1.1.2 FUNCTIONAL The MITEQ Frequency Translator uses a single-conversion technique with crystal oscillator reference for the local oscillator. The Translator translates the input frequency band to the output frequency band using a local oscillator that is phase locked to a high stability internal reference source or an external reference source.
  • Page 12 D. Level Control: 30 dB 60 dB (Option 1) E. Intermodulation Distortion: With two inband input signals each at -13 dBm, third order intermodulation products less than -50 dBc Input/Output Isolation: 60 dB minimum G. Primary Power: 100/120/220/240VAC selectable at rear panel H.

  • Page 13: Equipment Required But Not Supplied

    TABLE 1-1 EQUIPMENT SUPPLIED ITEM DESCRIPTION QUANTITY Model DN-14-12 Translator AC Voltage Line Cord DE-9S Connector (Option 7) 1.3.2 EQUIPMENT REQUIRED BUT NOT SUPPLIED Table 1-2 lists the equipment required for periodic maintenance and calibration of the translator. TABLE 1-2...

  • Page 14: Turn-On Procedure

    SECTION 2 INSTALLATION 2.1 UNPACKING, STORAGE, RESHIPMENT Carefully open the shipping container and remove the equipment. Weight of the unit is approximately 20 pounds. Inspect the equipment thoroughly and report any damage. If the equipment is to be stored, it should be wrapped in plastic and kept in a clean, dry place. If the equipment is to be reshipped for any reason, wrap in heavy plastic and ship in a heavy (275 lb.
  • Page 15 TABLE 2-1 EXTERNAL CONNECTIONS DESIGNATION DESCRIPTION Power Cord Attach power cord to AC socket of unit. Connect other end to a power line. Input Connect input to J1. Output Connect output to J2. Connect Summary Alarm to J4. Summary Alarm (Option 7 Only) External Reference If the internal crystal reference is used, place the INT/EXT Reference...

  • Page 16: Operation

    SECTION 3 OPERATION 3.1 INTRODUCTION The following paragraphs describe the controls, adjustments and procedures for turn-on, operation, emergency operation and shutdown of the Translator. 3.2 CONTROLS 3.2.1 EXTERNAL CONTROLS (Figures 1-1 and 1-2) A. On/Off switch (A1A2) applies AC power to the unit B.

  • Page 17: Emergency Operation

    3.2.2 INTERNAL CONTROLS (Figure 1-3) A. Power Supply Voltage Adjustment (A1A3) Adjustment of the power supply within tolerances may be made using an insulated tuning tool (refer to Appendix). B. Frequency Adjustment of Crystal Oscillator (A3A1) The frequency of the local oscillator can be monitored at the front panel "Freq/Power Monitor". Adjustments in frequency can be made by adjusting a tunable capacitor in the reference source A3A1, accessible through the top surface of the source (refer to Figure 1-3).

  • Page 18: Principles Of Operation

    PRINCIPLES OF OPERATION 4.1 INTRODUCTION The following paragraphs provide information on the principles of operation of the MITEQ Model DN-14-12 Frequency Translator. The overall functional operation of the system is discussed in Paragraph 4.2 and detailed principles of operation for the individual subassemblies are presented in Paragraph 4.3.

  • Page 21: Subsystems And Components Functional Description

    4.3 SUBSYSTEMS AND COMPONENTS FUNCTIONAL DESCRIPTION 4.3.1 SIGNAL PATH 4.3.1.1 Input Isolator (A2A1) Description: Isolator Part Number: 111896 Specifications - A. Frequency: 13.9-14.6 GHz B. Insertion Loss: 0.25 dB C. Input/Output VSWR: 1.15:1 D. Isolation: 23 dB minimum E. Connectors: SMA female 4.3.1.1.1 Option 1 - Input Attenuator, Isolator (A2A8, A2A9) A2A8 -...

  • Page 22: Option 2 - Input Filter, Isolator (A2A10, A2A11)

    4.3.1.1.2 Option 2 - Input Filter, Isolator (A2A10, A2A11) A2A10 - Description: Filter Part Number: FLT-111201-XXXXX Function: Rejection of out of band signals Design: Five section waveguide (WR62) Specifications - A. Frequency: 14.0-14.5 GHz B. Insertion Loss: 0.4 dB C. Flatness: 0.2 dB peak to peak D.

  • Page 23: Mixer (A2A2)

    4.3.1.2 Mixer (A2A2) Part Number: M20-14-12-XXXXX Function: Frequency translation Design: Double balanced Specifications - A. Input Frequency: 14.0-14.5 GHz B. Output Frequency: 11.7-12.2 GHz C. LO Frequency: 2.3 GHz D. Conversion Loss: .5 dB nominal E. LO Power: +10 dBm Isolation - LO/Output: 20 dB minimum...

  • Page 24: Option 8 - Output Amplifier

    A2A4 - Description: Filter Part Number: FLT-117444-XXXXX Function: Rejection of out of band signals Design: Five Pole Combline Specifications - A. Frequency: 11.7-12.2 GHz B. Insertion Loss: 2.5 dB C. Flatness: 0.2 dB peak to peak D. Input/Output VSWR: 1.2:1 E.

  • Page 25: Local Oscillators

    4.3.2 LOCAL OSCILLATORS 4.3.2.1 Crystal Oscillator (A3A1) Part Number - XTO-01-104.545455-20P-XXXXX XTO-02-104.545455-20P-XXXXX (Option 5) The crystal oscillator is a highly stable precision crystal oscillator enclosed in a proportionally- controlled oven housing. The temperature of the inner housing is maintained at 70°C ±0.2°C over an ambient temperature range of 0°C to 55°C.

  • Page 26: Phase Lock Source, Isolator, Coupler, Attenuator

    4.3.2.2 Phase Lock Source, Isolator, Coupler, Attenuator (A3A2 to A3A5) A3A2 - Part Number - PLE-2300A-20P-XXXXX The phase lock source consists of: 1. Low noise fundamental cavity oscillator with electronic fine tuning 2. Harmonic generator 3. Phase detector 4. Phase lock alarm circuit The input signal is directed through the harmonic generator and into the phase detector.
  • Page 27 A3A3 - Description: Isolator Part Number: 114752 Specifications - A. Frequency: 2140-2360 MHz B. Insertion Loss: 0.25 dB C. VSWR Input/Output: 1.15:1 D. Isolation: 23 dB minimum E. Connectors: SMA female A3A4 - Description: Coupler Part Number: 117525-3 Specifications - A.

  • Page 28: Local Oscillator Options

    4.3.2.3 Local Oscillator Options 4.3.2.3.1 Option 3, 6B - Internal/External Reference Selection The internal/external reference select switch consists of an RF switch controlled by a front panel toggle switch. The RF switch breaks the connection between the crystal oscillator and the phase lock source to allow insertion of an external reference from a front panel connector.
  • Page 29 A3A2 - Part Number: PLE-5-2300-20P-XXXXX The phase lock source consists of: 1. Crystal oscillator with electronic tuning 2. Digital divider 3. Digital reference divider 4. Two Phase detectors 5. Phase lock alarm circuit 6. Low noise fundamental cavity oscillator with electronic tuning 7.
  • Page 30 2-8V sweep or 18-20V High 4.3.4 POWER SUPPLY, LOW PASS FILTER A complete manual for the power supply is given in Appendix A. The following information applies: Voltage MITEQ Model Number Power One Part Number Voltage Setting Tolerance +20V PS120-FS05-101-XXXXX FS05-101 ±0.25V...

  • Page 31: Preventive Maintenance

    SECTION 5 MAINTENANCE 5.1 INTRODUCTION This section includes information and instruction for performance monitoring, adjustment and troubleshooting of the translator. 5.2 PREVENTIVE MAINTENANCE The translator is a completely solid state design. Normal periodic inspection for cleanliness and mechanical integrity should be made in accordance with standard procedures. To prevent long and costly downtime of the translator, periodic monitoring of the overall performance parameters that are most indicative of individual component performance is necessary.

  • Page 32: Frequency Measurement

    Stepped Sweep Detector Translator Scalar Attenuator Generator Analyzer Figure 5-1. Test Setup for Conversion Loss and Frequency Response Measurement 5.2.3 FREQUENCY MEASUREMENT The frequency of the local oscillators can be monitored at the "Freq/Power Monitor" point. The frequency varies with the reference used, the phase lock source acting as multiplier of input reference frequency.

  • Page 33: Corrective Maintenance

    5.3 CORRECTIVE MAINTENANCE If the Translator malfunctions during normal use or if the tests in Section 5.2 reveal excessive discrepancies in Translator gain or local oscillator frequencies, isolation and correction of the malfunction becomes necessary. Frequency deviation indicates loss of phase lock in the phase-locked oscillator.
  • Page 34 TABLE 5-1 PARTS LIST - DN-14-12 TRANSLATOR ITEM "A" NUMBER MANUFACTURER PART NUMBER DESCRIPTION A1A1 Corcom 6J4(F1881) AC Line Filter A1A2 Micro-switch MLW-3022-9MK On/Off Switch A1A3 MITEQ PS-120-FS05-101-XXXXX Power Supply OPTION 6 MITEQ PS-120-FS05-102-XXXXX Power Supply A1A4 MITEQ 118786-XXXXX Low Pass Filter...
  • Page 35 TABLE 5-1 PARTS LIST - DN-14-12 TRANSLATOR ITEM "A" NUMBER MANUFACTURER PART NUMBER DESCRIPTION OPTIONS 3, 6B A3A6 118140 SPDT Switch OPTION 4 A3A7 MITEQ 114572 Isolator A3A8 118140 SPDT Switch A4A1 Bourns 3852A-282-252A Level Control Potentiometer OPTION 7 A4A3...
  • Page 36 SECTION 6 DIAGRAMS 6.1 INTRODUCTION This section contains the schematics and overall wiring diagram for the DN-14-12 Frequency Translator. TABLE 6-1 LIST OF DIAGRAMS Fig. No. DESCRIPTION PAGE Wiring Diagram Schematic Diagram, Summary Alarm Circuit (Option 7 only) (A4A3) Assembly Diagram, Summary Alarm Circuit (Option 7...

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