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Ritron SPX-200 Maintenance/Repair/Operating Manual

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TYPE OF EXHIBIT:
FCC PART:
MANUFACTURER:
MODELS:
FCC ID:
DATE:
IC STANDARDS:
INDUSTRY CANADA:
MODELS:
Included in this exhibit is a draft of the Maintenance and Operating Manual for the Ritron Model SPX-200
VHF-FM Portable Transceiver.
Specifically, the manual includes a technical description of the SPX-200 sufficient to establish compliance
with the technical standards of the applicable rule part(s).
This includes, but is not limited to, the following items required under FCC Part 2.1033(c):
(1)
FCC Identifier.
(2)
A copy of the installation and operating instructions.
(3)
Type of emission.
(4)
Frequency range.
(5)
Range of operating power, and means to provide variation in operating power.
(6)
Maximum power rating.
(7)
Tune-up procedure.
(8)
A description of all frequency determining and stabilization circuits. A description of the circuits
used to suppress spurious radiation, limiting modulation, and limiting power.
(9)
Drawing with labels for controls and complete circuit diagrams.
Signed:
________________________________
Kevin G. Matson - Project Engineer
OPERATIONAL DESCRIPTION
2.1033 (c)(6)
RITRON, INC.
505 West Carmel Drive
Carmel, IN 46032
SPX-200
AIERIT19-150
December 28, 2004
RSP-100, Issue 8, Section 7.2(b)
1084A-RIT19150
SPX-200-BC, SPX-200-CANADA
57

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Summary of Contents for Ritron SPX-200

  • Page 1 1084A-RIT19150 MODELS: SPX-200-BC, SPX-200-CANADA Included in this exhibit is a draft of the Maintenance and Operating Manual for the Ritron Model SPX-200 VHF-FM Portable Transceiver. Specifically, the manual includes a technical description of the SPX-200 sufficient to establish compliance with the technical standards of the applicable rule part(s).
  • Page 2 SPX-200 (Preliminary) MAINTENANCE / REPAIR / OPERATING MANUAL...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS CONTENTS ....................................1 1. INTRODUCTION................................60 2. OPRATION FEATURES ..............................3 3. TECHNICAL SPECIFICATIONS ..........................61 1) GENERAL ..................................4 2) TRANSMITTER.................................4 3) RECEIVER ..................................4 4. CIRCUIT DESCRIPTION ..............................5 1) PHASE-LOCK LOOP (PLL) CIRCUIT.......................... 5 2) TRANSMITTER ................................5 3) RECEIVER ..................................62 5.

  • Page 4: Introduction

    This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. SPX-200 is a micro size FM transceiver operating between 136 ~ 174 MHz. With the output power of 5 W(1 ~ 5 W).

  • Page 5: Technical Specifications

    Function button (Menu / Esc.) Universal connector Connect the external accessories (speaker / microphone, cloning cable & wall charger) (optional) Belt clip MIC. PTT(Push To Talk) Button Hold down to transmit, release to receive. Channel Select Button (Up & Down buttons) Select the desired channel with pressing Up and Down button, pressing and holding down more than 1 second Monitor Button Press to monitor.

  • Page 6: Circuit Description

    4. CIRCUIT DESCRIPTIONS 1) PHASE-LOCK LOOP (PLL) CIRCUIT * REFERENCE OSCILLATOR The reference oscillator consists of X401 in U401 with a frequency of 12.8MHz. The reference oscillator frequency is stabilized by the thermistor R403 and drives a divider to produce a comparison frequency. This comparison frequency is selected by decoding the first three bits of the data input from microcomputer.

  • Page 7: Alignment Procedure

    U201 which has hysteresis to prevent jitter. The sensitivity of squelch is adjusted by VR201. 5. ALIGNMENT PROCEDURE 1) MEASUREMENT CONDITION The following sections describes the alignment procedure for SPX-200 VHF transceiver under the following reference environment conditions: Temperature...

  • Page 8: Receiver

    The PCBs The radio consists of two PCBs, the RF (rear side) and control board (front side).. On the RF Board, connect ANT1 to a signal generator or RF power meter. On the RF Board, connect Power Supply to the battery terminal contacts. Connect External Speaker Mic Plug (or Audio Test Jig) to J3.

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