Multitone RPR750 Series Manual & Service Manual
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Multitone RPR750 Series Manual & Service Manual

Rpr750 series paging receiver
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Manual & Service Guide
RPR750 Series Paging Receiver
TM1215 (Issue 6.0)
Time critical messaging

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Summary of Contents for Multitone RPR750 Series

  • Page 1 Manual & Service Guide RPR750 Series Paging Receiver TM1215 (Issue 6.0) Time critical messaging...
  • Page 2 TM1215 Iss. 6.0 RPR750 Issue Control Issue Date Remarks 15.03.10 First Issue of re-formatted document, including MKII Decoder PCB and revised case-style data.

  • Page 3: Table Of Contents

    TM1215 Iss. 6.0 RPR750 Contents Company Liability ........................1 Safety summary ......................... 2 Compliance Statements & WEE Information................3 1. Introduction..........................4 1.1 Features ......................... 4 1.2 Technical Specification....................6 User Operating Instructions ....................... 9 2.1 Introduction........................9 2.2 Controls & Indicators ...................... 9 2.3 Wearing the Pager .......................

  • Page 4: Company Liability

    Company Liability The contents of this manual have been checked and verified for technical accuracy. Multitone Electronics plc accepts no liability for inaccuracies, or errors. In accordance with the company policy of continuous product development, the content of this manual may be altered.

  • Page 5: Safety Summary

    (HAZARDOUS AREA) VARIANT OF THE RPR 750 SERIES, THIS MANUAL DOES NOT COVER THE DETAILED SERVICING OF THIS PRODUCT VARIANT AND ANY SUCH ITEMS SHOULD BE RETURNED TO MULTITONE FOR REPAIR. DO NOT TAKE STANDARD VERSIONS OF THIS PAGER INTO AREAS...
  • Page 6 EU Territories: - This product complies with the requirements of the EU Radio & Telecommunications Terminal Equipment Directive 99/5/EC. A complete copy of the associated Declaration Of Conformity for this and other Multitone products, may be found at the following Multitone Internet address: - www.multitone.com/support US/Canada: - This device complies with Part 15 of the FCC Rules and Industry Canada standard RSS210.

  • Page 7: Introduction

    User selected functions. 1.1.1 Code Formats:- Multitone MK6, MK7 and CCIR Radio-paging Code No. 1 (RPC1) - POCSAG (512 & 1200 Baud). 1.1.3 Available Addresses: - MK6 - a single address, plus one 10, 100 or 1,000 user group call option;...
  • Page 8 Data link with control system provides message facility e.g. display User No. Pager automatically enters switch-on sequence, when removed from the rack. • Programming - software enabled options, may be programmed using a Multitone programming "pocket", software and a PC.

  • Page 9: Technical Specification

    TM1215 Iss. 6.0 RPR750 1.2. Technical Specifications 1.2.1 Radio Parameters Model: UHF - RPR753; VHF - RPR752; HF - RPR751 Frequency Range: 407 - 470MHz 137 - 174MHz 25 - 54MHz Frequency Bands: 407 - 417MHz 137 - 144MHz 25 - 27.5MHz 430 - 435MHz 144 - 149MHz 27.5 - 30.5MHz...
  • Page 10 TM1215 Iss. 6.0 RPR750 Adjacent Channel Selectivity: UHF/VHF ≥55dB 12.5kHz UHF/VHF ≥65dB 20/25kHz ≥50dB 10/12.5kHz ≥50dB 20/25kHz Image Response: UHF/VHF ≥50dB ≥10dB Spurious Response: UHF/VHF ≥50dB ≥50dB Intermodulation Response: UHF/VHF ≥55dB (2+4, 4+8 channel) ≥50dB Co-channel Rejection: UHF/VHF ≥-6dB ≥-5dB Spurious Emissions: 25MHz - 1GHz ≤2nW...
  • Page 11 RPR750 DO NOT CHANGE THE BATTERY IN A HAZARDOUS AREA. FOR IS EQUIPMENTS, REPLACE BATTERY ONLY WITH AN APPROVED TYPE. Approved Batteries (AAA) IS Variants: See User Guide supplied with product, or contact Multitone 1.2.4 Operational Environment ° ° Temperature:...

  • Page 12: User Operating Instructions

    RPR750 User Operating Instructions Introduction This section describes the operation of the Multitone RPR 750 Series radio-paging receiver, including the location and function of each button and indicator. Unless otherwise stated, operation is common to all variants in the Series.

  • Page 13: Wearing The Pager

    TM1215 Iss. 6.0 RPR750 Wearing the Pager The pager is supplied with a detachable "Griptite" clip, which is specifically designed to enable a tight grip-fit when used for "in-pocket", or "belt" applications. The tightness of the clip may be adjusted by varying the clip slider on the underside of the clip assembly. An elasticised detachable Lanyard option with a metal retaining clip, is also supplied.
  • Page 14 Table 1: Status Messages 2.4.6 Receiving a Call For Multitone MK6 & MK7 code formats, there are 8 different audible alert patterns (beep codes - see Table 2), plus one silent alert function. When a call is received using these formats, the user is alerted (where option is selected) by: a) the chosen audible tone alert pattern (except in Mute mode);...
  • Page 15 TM1215 Iss. 6.0 RPR750 PIP/BEEP TONE ALERT PATTERN MULTITONE BEEP CODE Single Beep Double Beep Triple Beep Continuous Beep Single Pip Double Pip Triple Pip Continuous Pip Silent Alert Note: * Beep codes 5 & 8 override the Escalert and mute modes. The alert is full volume for the whole of the programmed alert period.
  • Page 16 TM1215 Iss. 6.0 RPR750 Stage Duration Alert 4 seconds LED flash only, following the assigned beep code pattern 4 seconds LED flash and quiet tone, both following the assigned beep code pattern 8, 16, 32 seconds, or As per stage 2, but at normal tone continuous volume Table 3: Escalating Alert Sequence...
  • Page 17 TM1215 Iss. 6.0 RPR750 2.4.11 Vibrate Alert A software programmable option, which once programmed may also be enabled/disabled directly by the User, utilising the MUTE button as previously described in 2.4.10. Note: Both the Mute and Vibrate modes are software options. If either or both of these options are disabled, then the corresponding modes of operation described in 2.4.10 &...
  • Page 18 TM1215 Iss. 6.0 RPR750 2.4.14 Message Replay Order If there are new messages, then only these will be recalled. Once all the new messages have been recalled, the pager will exit the memory replay mode and it will be possible to view all the messages in the memory.
  • Page 19 If there are no messages, or speech associated with a call, then the message display will show as "tone call n" for the duration of the alert, where n is the Multitone Beep Code number (see Section 2.4.6, Table 2).
  • Page 20 TM1215 Iss. 6.0 RPR750 To change the hours repeatedly press, or press and hold the MUTE button, until the desired hour is displayed. When this point has been reached, press the CANCEL button and the minutes will start to flash. Press the MUTE button as before, until the desired minutes are displayed.
  • Page 21 2.5.5 Absence & Charging Use only Multitone specified charging racks/units and programming jigs. Only pagers fitted with rechargeable batteries should be inserted into a...
  • Page 22 TM1215 Iss. 6.0 RPR750 In the quiescent state, the pager will display *TEST MODE*, instead of status. Additionally, if the pager is in mute mode the tone alert will be suppressed, unless an override beep code is transmitted. If a call is sent to a single pager in test mode, then any message or speech will be ignored, but if an all-call address is used then the pager will open the speech circuits for 2 to 4 seconds, to test the speech channel.
  • Page 23 TM1215 Iss. 6.0 RPR750 Using the Battery Door Tool, lift and release the battery-door catch and with forefinger, pull the door away from the case, in the direction shown in the illustration. Battery door catch Clip back-plate retaining slot Figure: 2.3 Battery Door Removal Ensure that the battery door lugs are lifted clear of the case and remove the door.
  • Page 24 TM1215 Iss. 6.0 RPR750 To replace the battery door, firstly locate the battery door lugs into the positions shown and then rotate the door downwards, compressing the battery and surrounding gasket. Push until the second set of lugs and the catch engage and hold the door closed. Figure: 2.6 Battery Door Re-fitting Finally, whilst holding the battery door in place, re-insert the metal clip-back into the guides on the case-rear and slide the clip into place, ensuring that the retaining lug re-...

  • Page 25: Technical Description

    TM1215 Iss. 6.0 RPR750 Technical Description PHYSICAL CONSTRUCTION The RPR 750 Series receiver electronic hardware comprises two main printed circuit board (PCB) assemblies, contained in a plastic housing. See Fig. 3.1. Function Buttons Loudspeaker Window Display PCB Case Front Case Screws Radio PCB Loudspeaker Retaining Clip Rubber Spacer Mat...

  • Page 26: Functional Description

    TM1215 Iss. 6.0 RPR750 FUNCTIONAL DESCRIPTION...
  • Page 27 TM1215 Iss. 6.0 RPR750 .2.1 Radio Board RF Section (VHF/UHF) he RPR 750 Series VHF/UHF radio is a dual conversion superhet configuration. The incoming RF signal is detected by the loop antenna AE401/402 and is finely tuned by capacitor CV401. C433 and C435 provide matching to the RF amplifier formed by TR4 and TR404, which provides in the order of 10dB gain.
  • Page 28 TM1215 Iss. 6.0 RPR750 .2.3 Demodulation & Detection (All RF variants) 401 is a multi-functional device, combining the operations of mixer, local oscillator, IF, detector, low battery alarm and a 1V regulator. he IF amplifier of IC401 amplifies the signal and also removes any AM components in the waveform, in order to shape the data signal to a "square"...
  • Page 29 TM1215 Iss. 6.0 RPR750 4.19MHz, with a sub-system clock XL2 operating on either 32.768kHz or 38.4kHz, depending upon the Baud rate selected for the pager (512 or 1200). The radio circuits are activated by IC1/IC12 (RXEN-SK1/13) for a brief period every second, so that a check may be made for the presence of a preamble signal.
  • Page 30 TM1215 Iss. 6.0 RPR750 3.2.4.3 Power management This section comprises IC5 and IC10, under the control of IC1/IC12. IC10, L1 and D29, form a voltage converter, which boosts the nominal battery voltage to 3.3V (VDD). When a battery is fitted, TR’s 8 & 10 are enabled and the output of IC10 is connected to the digital sections of the pager.

  • Page 31: Servicing

    Service Policy Where possible, it is advocated that faulty units are returned to Multitone for repair. Where it is necessary to effect repairs in the field, these should be limited to the direct replacement of the identified faulty module, or broken case part, only. Any component removed, must be replaced by the relevant item as specified in Section 6.

  • Page 32: Dismantling The Pager

    TM1215 Iss. 6.0 RPR750 Dismantling the Pager Before dismantling the pager, ensure that it is switched off! 4.4.1 Clip Removal & Replacement Push down with thumb Slide Clip Assembly to remove Insert Battery Door Tool or b lade under the edge o the metal retaining clip and lift Figure: 4.1...
  • Page 33 TM1215 Iss. 6.0 RPR750 Place tip of finger on the top edge (display) of a button and pull forward towards the front of the unit, until it releases from the main assembly. Repeat the process with the second button and carefully retain both components. From this point, dis-assembly is the same for both the early equipments and the later assemblies with the “raised”...
  • Page 34 TM1215 Iss. 6.0 RPR750 Separate the two case halves around the area of the catches. Holding the rear half of the pager in one hand, with the other hand, grip and gently pivot the case front upwards. This should release the remaining 2 catches. Take care not to strain the speaker connection.
  • Page 35 TM1215 Iss. 6.0 RPR750 Location of retaining screw 4.4.4 Re-assembly Ensure that the switches are located correctly, before closing. Locate these rear catches first Re-assembly is the reverse process of the above. When re-assembling a complete case- back assembly (including PCB's) together with a case-front; first locate the two catches at the base of the rear case assembly and lock these into position in the case-front.
  • Page 36 TM1215 Iss. 6.0 RPR750 Before attempting clip replacement, ensure that the grip adjustment slider is set to the top of the clip and that the metal back-plate has been straightened. Re-insert the metal clip- back into the guides on the case-back and slowly slide the clip into place, ensuring that the retaining lug re-locates into the slot in the case-back.
  • Page 37 TM1215 Iss. 6.0 RPR750 4.5.2 Test Equipment 1.5V nominal dc power source Digital Multimeter Oscilloscope Test Encoder (P645) RF Signal Generator Multitone P648 Programming Unit 4.5.3 Component Location Points MKI Decoder 0261-7498 Topside HF Variants only MKII Decoder 0261-8243 Topside...
  • Page 38 TM1215 Iss. 6.0 RPR750 MKI Decoder 0261-7498 Underside MKII Decoder 0261-8243 Underside 4.5.4 Basic Test Measurements 1. 3.3V ±5% should be present on the positive end of C12. Fault condition found - check the operation of the voltage converter IC10, the series inductor L1, or the rectifier diode D29.
  • Page 39 TM1215 Iss. 6.0 RPR750 3. Check that the reset line is high i.e. the supply rail is within limits and the micro- processor is operational. Fault condition found - check IC5 pin 1, or the junction of C16 & R19. If the reset line is low, then the 3.3V line may be outside limits, IC 5 may be faulty, or there could be a short circuit elsewhere on the line.
  • Page 40 TM1215 Iss. 6.0 RPR750 4.5.9 Decoder Alert LED not working If the LED does not work when the pager is inserted into a charging rack, then check D25, R52, R54 and the LED itself. If the LED is not operable during the initialisation sequence, or when the pager receives a call, verify that IC1 pin 22 or IC12 pin 41(HS) switches to 0V when the LED is active.
  • Page 41 It is possible to perform a rudimentary radio PCB alignment, outside of the case assembly. However for final tuning of the aerial, it is necessary to use either a Multitone alignment jig, or a modified case assembly, which has the necessary cut-outs for access to the alignment points.
  • Page 42 TM1215 Iss. 6.0 RPR750 Layout of VHF/UHF Radio PCB, showing Test Points and Adjustment Trimmers 4.6.2 Test Equipment RF signal generator, with external FM modulation I/P SINAD Meter Digital Multimeter Ceramic/insulated Bladed Trimming Tool & Probe suitable for audio frequencies Non-invasive coupling device for RF signal e.g.

  • Page 43: Alignment Of Hf Radio Pcb

    TM1215 Iss. 6.0 RPR750 Starting with the radio PCB uncovered, connect the audio probe from the SINAD meter between TP1 and Gnd./0V (the circular PCB track next to TP1 is the most suitable point). Temporarily fit R416 (0R), or connect TP6 to TP7, to enable the receiver. Check the battery voltage is correct (TP7) and also the 1V rail (TP4).
  • Page 44 TM1215 Iss. 6.0 RPR750 4.7.2 Test Equipment RF signal generator, with external FM modulation I/P SINAD Meter Digital Multimeter Ceramic/insulated Bladed Trimming Tool & Probe suitable for audio frequencies Non-invasive coupling device for RF signal e.g. small telescopic aerial connected to RF signal generator.
  • Page 45 TM1215 Iss. 6.0 RPR750 List of Diagrams & Drawings Main Board (Decoder MKI) Circuit Diagram 2961 - 7497-3 Main Board (Decoder MKI) PCB Layout 0261 - 7498-2 Main Board (Decoder MKII) Circuit Diagram 2961 - 8242-2 Main Board (Decoder MKII) PCB Layout 0261 - 8243-3 HF Radio Circuit Diagram 2961 –...
  • Page 46 TM1215 Iss. 6.0 RPR750 MKI Decoder Circuit Diagram 2961-7497 Sheet 1...
  • Page 47 TM1215 Iss. 6.0 RPR750 MKI Decoder Circuit Diagram 2961-7497 Sheet 2...
  • Page 48 TM1215 Iss. 6.0 RPR750 MKI Decoder Circuit Diagram 2961-7497 Sheet 3...
  • Page 49 TM1215 Iss. 6.0 RPR750 MKI Decoder PCB Layout 0261-7498 Sheet 1...
  • Page 50 TM1215 Iss. 6.0 RPR750 MKI Decoder PCB Layout 0261-7498 Sheet 2...
  • Page 51 TM1215 Iss. 6.0 RPR750 MKII Decoder Circuit Diagram 2961-8242 Sheet 1...
  • Page 52 TM1215 Iss. 6.0 RPR750 MK1I Decoder Circuit Diagram 2961-8242 Sheet 2...
  • Page 53 TM1215 Iss. 6.0 RPR750 MKII Decoder Circuit Diagram 2961-8242 Sheet 3...
  • Page 54 TM1215 Iss. 6.0 RPR750 MKII Decoder PCB Layout 0261-8243 Sheet 1...
  • Page 55 TM1215 Iss. 6.0 RPR750 MKII Decoder PCB Layout 0261-8243 Sheet 2...
  • Page 56 TM1215 Iss. 6.0 RPR750 HF Radio Circuit Diagram 2961-7673 Sheet 1...
  • Page 57 TM1215 Iss. 6.0 RPR750 HF Radio Circuit Diagram 2961-7673 Sheet 2...
  • Page 58 TM1215 Iss. 6.0 RPR750 HF Radio PCB Layout 0261-7674 Sheet 1...
  • Page 59 TM1215 Iss. 6.0 RPR750 HF Radio PCB Layout 0261-7674 Sheet 2...
  • Page 60 TM1215 Iss. 6.0 RPR750 VHF Radio Circuit Diagram 2961-7494 Sheet 1...
  • Page 61 TM1215 Iss. 6.0 RPR750 VHF Radio Circuit Diagram 2961-7494 Sheet 2...
  • Page 62 TM1215 Iss. 6.0 RPR750 UHF Radio Circuit Diagram 2961-7834 Sheet 1...
  • Page 63 TM1215 Iss. 6.0 RPR750 UHF Radio Circuit Diagram 2961-7834 Sheet 2...
  • Page 64 TM1215 Iss. 6.0 RPR750 VHF/UHF Radio PCB Layout 0261-7495 Sheet 1...
  • Page 65 TM1215 Iss. 6.0 RPR750 VHF/UHF Radio PCB Layout 0261-7495 Sheet 2...
  • Page 66 This document is for guidance only. Products and services offered are subject to availability and may differ from those described or illustrated in this document as a result of changes. Specifications are subject to change without notice. Multitone Electronics plc is illustrated in this document as a result of changes.

This manual is also suitable for:

Rpr753Rpr752Rpr751

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