Larcan Inc DTT250M User Manuals

Table of Contents

• 1 TSM20-275INTRO-R0.275

  1
  • INTRODUCTION

    1
  • AMPLIFIER CHAIN

    1
  • TRANSMITTER CONTROL

    2
• 2 PUB96-26_tx_RF_output_bndpss_fltr_drctional_cplr_Rev1

  3
  • 1 BANDPASS FILTER

    3
  • 2 RF DIRECTIONAL COUPLER

    6
• 3 PUB96-28R2 PA 1.5kW LB

  8
  • Functional Description

    9
  • 6-Way Splitter/Input Board

    9
  • FET RF Amplifiers

    9
  • 6-Way Combiner/Output Board

    10
  • VSWR Control Board

    10
  • Green LED Sensitivity Adjustment

    13
• 4 PUB96-29R2 PA 1_5kW HB

  15
  • Functional Description

    16
  • 6-Way Splitter/Input Board

    16
  • FET RF Amplifiers

    16
  • 6-Way Combiner/Output Board

    17
  • VSWR Control Board G1

    17
  • Green LED Sensitivity Adjustment

    20
• 5 PUB96-30_IPA3PL96.030

  22
  • Intermediate Power Amplifier

    22
  • RF Preamplifier

    22
  • SRF 39432 Intermediate Power Amplifier:

    23
    • Low Band IPA Circuit Description

      23
    • LB IPA Setup Procedures

      24
    • High Band IPA Circuit Description

      27
    • HB IPA Set Up Procedures

      27
• 6 PUB96-32 Transmitter_Ctrl_Panel_Ctrl_PCB_Asst_Rev2

  29
  • CONTENTS

    29
  • Control and Metering Panel

    29
  • Transmitter Control Circuit board Assembly

    29
• 7 PUB96-33_MET96R1.033

  32
  • Contents:

    32
  • RF Metering & AGC Board

    32
    • RF Detectors:

      32
    • AGC and VSWR supervision:

      33
  • RF Metering Board Test and Calibration:

    34
    • Forward Power Meter Calibration - Zero Adjust

      34
    • Reflect Power Meter Calibration - Zero Adjust

      34
    • Forward Power calibration and Telemetry

      34
    • Reflected Power calibration and VSWR Trip Settings

      34