Multitone RPR750, RPR753, RPR752, RPR751 Service Manual

Manual & Service Guide RPR750 Series Paging Receiver
TM1215 (Issue 6.0)
Time critical messaging
TM1215 Iss. 6.0 RPR750
Issue Date Remarks
6.0
15.03.10
First Issue of re-formatted document, including MKII Decoder PCB and revised case-style data.
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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
2. User Operating Instructions ....................................................................................................... 9
2.1 Introduction..................................................................................................................... 9
2.2 Controls & Indicators ......................................................................................................9
2.3 Wearing the Pager ....................................................................................................... 10
2.4 Operation of the Pager ................................................................................................. 10
2.5 Options & Features ...................................................................................................... 16
3. Technical Description............................................................................................................... 22
3.1 Physical Construction................................................................................................... 22
3.2 Functional Description.................................................................................................. 23
4. Servicing .................................................................................................................................. 28
4.1 Routine Maintenance ................................................................................................... 28
4.2 Service Policy............................................................................................................... 28
4.3 Test Equipment & Tools ............................................................................................... 28
4.4 Dismantling the Pager .................................................................................................. 29
4.5 Servicing Information for Decoder PCB's ..................................................................... 33
4.6 Alignment of VHF & UHF Radio PCB's ........................................................................ 38
4.7 Alignment of HF Radio PCB......................................................................................... 40
5. List of Diagrams & Drawings.................................................................................................... 42
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TM1215 Iss. 6.0 RPR750
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. The user of this document should ensure that they are in possession of the correct issue of this document, before attempting any work on equipment.
Multitone Electronics plc
Multitone House,
Shortwood Copse Lane,
Kempshott,
Basingstoke,
Hampshire,
England
RG23 7NL
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TM1215 Iss. 6.0 RPR750
Safety Summary
The following information is applicable to both user and servicing personnel. Warnings and cautions will be found throughout this document, where they are deemed necessary.
Warning
statements identify conditions or practices, which could result in
injury, or loss of life.
Caution
statements identify conditions or practices, which could result in
damage to equipment.
WARNINGS
WHILST REFERENCE IS MADE IN THIS DOCUMENT TO THE INTRINSICALLY SAFE (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
WHERE EXPLOSIVE MIXTURES MAY BE PRESENT
WHEN CHARGING IS ENABLED, ONLY PAGERS FITTED WITH
RECHARGEABLE BATTERIES SHOULD BE INSERTED INTO THE
ABSENCE/CHARGING RACKS, OR DESK-TOP CHARGERS
CAUTIONS
PROTECT THE PAGER FROM LIQUIDS, STRONG MAGNETIC FIELDS AND
EXTREME TEMPERATURES. DO NOT LEAVE THE PAGER EXPOSED TO STRONG SUNLIGHT. AVOID SUCH AREAS AS CAR INTERIORS AND WINDOW LEDGES.
STATIC SENSITIVE DEVICES ARE USED IN THIS EQUIPMENT. CARE MUST BE
TAKEN, TO AVOID DAMAGE FROM HIGH LEVELS OF STATIC ELECTRICITY.
DO NOT PRESS ANY OF THE BUTTONS WHEN THE PAGER IS IN THE ABSENCE
RACK, OR PROGRAMMING POCKET.
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TM1215 Iss. 6.0 RPR750
Compliance Statements
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. Operation is subject to the following two conditions: (1), this device may not cause harmful interference and (2), this device must accept any interference received, including interference that may cause undesired operation.
Any unauthorised modification to this device may void the user's authority to operate the equipment.
WEEE Directive & Product Disposal
At the end of its serviceable life, this product should not be treated as household or general waste. It should be handed over to the applicable collection point for the recycling of electrical and electronic equipment, or returned to Multitone or their agent, for disposal.
Any batteries associated with these products, must be
disposed of in accordance with local regulations for the handling of such items, or returned to Multitone or our agents, for disposal.
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TM1215 Iss. 6.0 RPR750
1. Introduction
The Multitone RPR 750 Series is a "top-fired" alphanumeric radio-paging receiver, designed to operate in the 25 - 54MHz (751), 138 - 174MHz (752) and 407 - 470MHz (753) radio frequency bands.
The paging and messaging data is transmitted, using either of the Multitone proprietary MK6 and MK7 digital code formats, or the CCIR Radio Paging Code No.1 (POCSAG) format. The Multitone formats also have the facility for enabling speech messages, following initial paging data.
User alert facilities include selectable options of beep-alert tones, flashing LED, speech and/or vibration. Any of these alert options may be accompanied by an alphanumeric message, either pre-formatted up to 60 characters in length (Multitone MK6), or free­formatted up to 120 characters (Multitone MK7 and POCSAG).
For use in areas of classified hazardous atmospheres, the RPR 750 is also available in "intrinsically safe" variants, which are certified to recognised international standards.
The equipment is powered from a single "AA" (LR6) size battery, or a "AAA" (LR03) for the IS variant. This may be a disposable primary cell, or where the system is suitably equipped, absence/charging racks enable the use of secondary re-chargeable cells. During periods of battery replacement, or the pager being switched off, an internal back­up storage device will enable the retention of data for up to 12 hours.
For the intrinsically safe equipment variants, only certain battery types are permitted. Refer to user information for correct types, before attempting to replace these items.
1.1 Equipment Features
The following operational features are available with the RPR 750 Series. The availability of individual facilities, is dependent upon the equipment variant supplied, pre-programmed options and 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;
MK7 - up to 10 individual addresses, plus one 10, 100, 1,000, or 10,000 user group call address and one all call address;
POCSAG - up to 4 individual address (RIC) codes, each with 4 function codes.
1.1.4 Alert options: -
Audible alert level - 80dBA SPL @ 30cm, full volume.
Beep alert - MK6/7 - up to 8 beep tone patterns; POCSAG - up to 8 cadence
patterns.
Volume - user enabled volume control of beep & speech.
Silent alert - user enabled option; vibrate and/or flashing red LED.
Escalating alert - software enabled option; "Escalert" beep function, with 3 optional
start points, lamp only, quiet, or full.
Alert duration - software enabled option; 8s, 16s, 32s, or continuous.
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TM1215 Iss. 6.0 RPR750
Extended alert - software enabled option; flashing LED every 2s, programmable tone & vibrate repeat period, 2s to 512s; alert continues until cancelled by user.
1.1.5 Display: -
14 character Liquid Crystal Display (LCD), with full alphanumeric scrolling capability. User selectable read orientation; automatic white LED back-lighting; software enabled "on demand" option.
1.1.6 Message options: -
Free format - Maximum off-air message length per call of 120 characters;
maximum of 5 stored message calls, or total of 600 characters; each message time stamped.
Beep code alpha format - up to 4 pre-programmed alphanumeric messages, each
of up to 14 characters in length.
1.1.7 Speech (MK6 & MK7 variants only)
"Live" and stored speech message options. Auto-switched to live speech with pre-
set timeouts (10s, 30s or 150s); termination off-air by encoder, or locally by CANCEL button.
Up to 120s of speech storage available, configurable in 5 partitions of 24s duration
per partition.
1.1.8 Optional Features
Language - software enabled option; English, French, German, Dutch, plus 12
further options.
Call Comparator - software enabled option; will ignore any call identified as a
"repeat" of the previous call, within chosen time period of 30s, 120s or 300s.
Time display - software enabled option; on or off. May be set within the pager, or
received as an off-air signal from the controlling system.
Out of range warning - software enabled option; alert to be given after a period of
3.5 minutes (MK6/MK7), or 5 minutes (POCSAG). Audible, tactile and visual alert options.
Low battery indication - software enabled option; audible, tactile and visual alert
options (not recommended for re-chargeable cells).
Permanent On - software enabled option.
Test mode - software enabled option; will override programmed alert options to
provide a short alert + call-count function for test purposes (coverage or pager).
1.1.9 Mechanical Construction
Minimum IP54 rated ingress protection.
Detachable Griptite clip.
Optional detachable lanyard.
1.1.10 Charging/Absence/Programming
Contacts are provided to enable charging, absence registration and programming facilities.
Charging - options of charging rack, absence/charging rack, or single desk-top
charging unit. For Intrinsically safe variants, only protected charging units as supplied by Multitone should be used.
Absence - automatic absence registration when inserted into an absence rack.
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.
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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 435 - 440MHz 149 - 155MHz 30.5 - 35MHz 440 - 444MHz 155 - 161MHz 35 - 39MHz 444 - 447MHz 161 - 167.5MHz 39 - 43.5MHz 447 - 451MHz 167.5 - 174MHz 43.5 - 48.5MHz 451 - 457MHz 48.5 - 54MHz 457 - 463MHz 463 - 470MHz
Channel Spacing: 10kHz, 12.5kHz, 20kHz & 25kHz
(10kHz available for HF variants only)
Intermediate Frequencies:
UHF: 45MHz & 455kHz; VHF: 21.4MHz & 455kHz; HF: 455kHz
Crystal Frequency:
UHF:
Carrier Frequency - 45MHz VHF: Carrier Frequency - 21.4MHz
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HF: (Carrier Frequency - 455kHz)/2
Sensitivity:
The sensitivity figures specified are on-body typical, for operation at the ambient temperature range 18ºC - 25ºC. At temperatures outside of this range, but within the specified extremes, performance is at an intermediate value. At specified extremes, the degradation of sensitivity shall not exceed +6dB, relative to the ambient figure.
The battery voltage should be above the low battery trigger point.
Variant Best Position 8 Position Average
RPR 751 15µV/m 25µV/m RPR 752 15µV/m 22µV/m RPR 753 15µV/m 25µV/m
Figures quoted are for operation @ 512 Baud data rate. An average degradation of 2dB in the sensitivity performance should be allowed for, when using 1200 Baud.
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TM1215 Iss. 6.0 RPR750
Adjacent Channel Selectivity:
UHF/VHF 55dB 12.5kHz UHF/VHF 65dB 20/25kHz HF 50dB 10/12.5kHz HF 50dB 20/25kHz
Image Response:
UHF/VHF 50dB HF 10dB
Spurious Response:
UHF/VHF 50dB HF 50dB
Intermodulation Response:
UHF/VHF 55dB (2+4, 4+8 channel) HF 50dB
Co-channel Rejection:
UHF/VHF -6dB HF -5dB
Spurious Emissions:
25MHz - 1GHz ≤2nW 1GHz - 4GHz ≤20nW
1.2.2 EMC Performance
In accordance with the requirements of the European R & TTE Directive, the RPR 750 Series Paging Receivers are also compliant with the following additional EMC performance parameters: -
RF Field Immunity: 80MHz-1GHz & 1.4GHz-2GHz - 3V/m Electro-static discharge: ±4kV contact discharge; ±8kV air-discharge.
1.2.3 Power Supply
Single cell battery size AA (LR6); Nominal voltage disposable: 1.5 Volt re-chargeable: 1.2 Volt
Typical Battery Life: Alkaline 1,000hrs NiMH 520hrs Ni-Cad 300hrs
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TM1215 Iss. 6.0 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: -10
°C to +55°C
Humidity: 90% RH (non-condensing)
Ingress Protection designed to meet IP54
Storage Temperature -20
° to +70°
1.2.5 Dimensions
Length: 81mm (3.2")
Width: 57mm (2.2")
Depth: 21mm (0.8")
1.2.6 Weight
Without battery: 60gm (2.1oz)
With battery: 83gm (2.9oz)
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TM1215 Iss. 6.0 RPR750
2 User Operating Instructions
2.1 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.
Note should be made of all the warnings and cautions outlined in the Preliminary Section and Section 1 of this manual, especially in relation to use of this equipment in hazardous areas.
2.2 Controls & Indicators
See Figure 2.1 below for the controls, indicators and User access points, associated with the RPR 750 Series.
Figure: 2.1 User Access and Control Points
LANYARD RETAINER
BATTERY COMPARTMENT DOOR
CHARGING & PROGRAMMING CONTACTS
GRIPTITE CLIP
MUTE BUTTON
LED CALL INDICATOR
ON/CANCEL/RECALL (OCR) BUTTON
ALPHA-NUMERIC
LC DISPLAY
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TM1215 Iss. 6.0 RPR750
2.3 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. This may be used in conjunction with the "Griptite" clip, or as a separate method of attachment.
2.4 Operation of the Pager
2.4.1 Switching On
To switch the pager on, press the ON/CANCEL/RECALL (OCR) button once. During the first 0.5 seconds, the pager will emit a short beep-tone, the LED will light, the vibrate motor operate and all of the segments of the LC display will show. Following this initial sequence, the LC display will go on to show the pager's address and a switch-on message. The display backlight will also illuminate for the period of this sequence, which will last for a total of approximately 8 seconds. Upon completion of the sequence, the pager will enter quiescent mode and be ready to receive calls.
If the battery is low, the "low battery warning" buzz-tone will additionally modulate the beep-tone during the initial sequence.
If during the switch-on sequence the pager's EEPROM cannot be read correctly (due to a fault, or incorrect programming), then the display will show a flashing sequence of EEEEEEEEEEEEEE. In this instance the functionality of the pager is limited to engineering mode, absence mode (for re-programming) and OFF.
2.4.2 Switching Off
To switch the pager off, press and hold the ON/CANCEL button and then press the MUTE
button. The pager will display OFF and then switch off after 2 seconds. Once the display
shows OFF, the ON/CANCEL button may be released and it is not possible to stop the shutdown sequence.
2.4.3 Permanent On
This is an optional programmable mode. The pager will automatically initiate the switch-on sequence as per Section 2.4.1, when a battery is inserted and remain ON until the battery is removed.
Should the "switch-off" button sequence (Section 2.4.2) be applied to a permanently ON pager, it will cause the display to read RESET and the pager will then perform a reset, followed by the switch-on sequence as per Section 2.4.1.
2.4.4 Display Modes
The Liquid Crystal Display (LCD) is a 14 character full alphanumeric device, which in the quiescent state is always active and will show the highest priority status information
(without backlight). Where time is enabled as an option, this will be displayed. Display reversal: - The displayed text may be inverted, to suit the User's mode of wearing
the pager. To enable this option, press the MUTE button whilst in the status interrogation mode (see 2.4.6). The new display direction will be held in the pager's non-volatile
memory and thus will be retained, even when the equipment is switched off, until reset.
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TM1215 Iss. 6.0 RPR750
On-demand option: - The pager may be programmed with this feature, which means that
the display will be blank in the quiescent state until the pager has a changed status (e.g. call), or a button is pushed.
2.4.5 Status Information
To interrogate the pager's status, from the quiescent mode, press the CANCEL button
once. This will cause status> to be displayed, followed by each programmable status
message in priority order. Each message is displayed for 1s and when the sequence is completed, the pager will revert to the quiescent mode. The sequence is as per Table 1 below.
Description Format When Used
New Message
X new message(s)
There are x message(s) with new
status (x = 1 to 5)
Out-of-range
Out of range
Option is enabled & no in-range
system signal has been received for
3.5 minutes for MK6/7 formats & 5 minutes for POCSAG
Low battery
Low battery
Option is enabled and cell voltage is
below trigger point
Time of day
12:00
Option programmed and pager is not
out of range, or internal clock option
has been activated
Mute status
mute
Pager is in mute mode
Vibrate
vibrate
Vibrate option selected
On status
on
No other status message to display
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); 8, 16, or 32s duration, as
programmed;
b) the Alert LED flashing in unison with the tonal alert pattern;
c) the display showing the received message;
d) pager vibration (if selected);
e) a speech message.
Where a silent alert is transmitted, functions b, c and optionally d & e, are activated.
Calls may continue to be received whilst the pager is beeping; however the sensitivity of the radio may be reduced during this period. If a new call is received it will take priority
and the original call will be assigned a new status and placed into the memory; unless it
has been cancelled by the User before the arrival of the second call.
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TM1215 Iss. 6.0 RPR750
PIP/BEEP TONE ALERT PATTERN MULTITONE BEEP
CODE
Single Beep 2 Double Beep 3 Triple Beep 1 Continuous Beep 4 Single Pip 6 Double Pip 7 Triple Pip 5* Continuous Pip 8* Silent Alert 9
Note: * Beep codes 5 & 8 override the Escalert and mute modes. The alert is full volume for the whole of the programmed alert period.
Table 2: Beep Alert Patterns & Beep Codes MK6 & MK7
Standard alert Beep and Pip tones are single 2.7kHz tones, timed at 125ms for a single Pip and 500ms for a single Beep, with equal periods between each tone (125ms & 500ms) for multiple cadence alerts e.g. double beep, triple beep etc.
An optional two frequency "warble tone" is also available, which consists of alternate
67.5ms periods of 2.1kHz and 2.7kHz tones. This tone will also follow the cadence patterns for the different alert types.
For the POCSAG variant up to 8 cadence patterns are available, which may be mapped to each RIC and function code.
2.4.7 Cancelling Alerts
An alert may be cancelled by pressing the CANCEL button, which will terminate the LED, tone and/or vibration alerts, but any message will be replayed from the beginning. The
cancel operation also deletes the new status from the call (see 2.4.13), but un-cancelled calls will retain their new status until they have been fully displayed in memory replay
mode.
2.4.8 Escalating Alerts
Alert escalation (Escalert) is a software programmable option, which may be set to commence at any point in the sequence shown in Table 3. If the vibrate option has been
selected, then this will be included at every stage in the alert, with a cadence of 2s on, 2s off.
If the pager is in the mute mode, then the alert tone will be suppressed from the sequences in Table 3. The Escalert option is overridden when beep codes 5 & 8 are
received (MK6/7), or RIC B (emergency override) (POCSAG) in this case, the pager will immediately commence an alert at the stage 3 level.
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Stage Duration Alert
1 4 seconds LED flash only, following the
assigned beep code pattern
2 4 seconds LED flash and quiet tone, both
following the assigned beep code pattern
3 8, 16, 32 seconds, or
continuous
As per stage 2, but at normal tone volume
Table 3: Escalating Alert Sequence
2.4.9 Extended Alert
Extended Alert is a software programmable mode, which is entered if a call is not
cancelled within the normal alert period. The sequence is as follows: -
LED - one 0.125s flash, commencing 2s after the end of the normal alert period, followed by one flash every 2s thereafter, until cancelled.
Tone - two 0.125s normal volume pips, commencing 120s after the normal alert period and 2 further pips every 120s thereafter, until cancelled. The time period between the pips
is 2s and they are synchronised to the LED flashes. If the pager is in Mute mode, or the
call is a Silent Alert, then the pips will be suppressed.
Vibrate - one 2s vibration, commencing 120s after the end of the normal alert period, followed by further vibrations every 120s, until cancelled.
Notes:
(a) It is not possible to interrogate ON/MUTE status, or change modes, during an
extended alert. The alert must first be cancelled and the call viewed from memory.
(b) The 120s alert interval is programmable from 2 to 512s, although 120 and 300
seconds are the most commonly used.
2.4.10 On/Mute Mode
A software programmable option with User definable configurations, using the MUTE
button. Whilst in the Mute mode the pager will respond to calls, but will not emit a tone
alert, or activate the speech audio channel. An alert will be notified by the flashing LED and vibration where activated. Text messages will be displayed and stored, as will any
associated speech messages, up to the specified storage limit. The Mute mode will be
neutralised by any override beep codes received and a normal alert will be sounded.
The ON/MUTE mode configuration may be changed, by pressing and holding the MUTE button for 1.5s whilst the pager is in the quiescent state. Each status will be displayed and acknowledged with an audible alert, in accordance with the Table 4 below. Subsequent
pressing of the MUTE button for 1.5s, will cause the pager to cycle through the status
options as given in Table 4.
Status On Display Audio Acknowledgement
on
1 quiet pip
Mute + vibrate
2 quiet pips + 1 second vibrate
On + vibrate
1 quiet pips + 1 second vibrate
Table 4: Mute/On Mode Sequence
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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 &
2.4.11 above, will not be available.
2.4.12 Call Status
Each call is given a new status when first received. This status is retained until the call is fully displayed, either during initial reception, from the memory replay mode, or is cancelled by the CANCEL button. If an alert is left uncancelled, then "x new messages"
will be shown on the display, where x = 1 - 5.
2.4.13 Message Retrieval & Viewing
New messages are displayed during the initial alert & speech periods unless cancelled and received calls are automatically entered into the pager's memory store. Message retrieval is initiated from the quiescent state, by pressing the CANCEL button once to
enter the Status mode and again to enter memory replay. If the pager is in the extended
alert mode, then the first press of the CANCEL switch will cause it to enter the memory replay mode directly. At this point, the pager will display the "header" for the first
message, or the phrase "no messages", if there are none. If there are no messages, the
pager will return to the quiescent state after 2 seconds.
The message "header" is the first part of the message screen and may consist of a time stamp or a message number (Mx, where x = 1 - 5), plus the initial part of the message if it is more than 14 characters (all if it is less), as in the examples shown below: -
Header Display Rest of message Time stamp 10:20 visitor in reception**
14:35 meet me in conf room 15:00 - ADT**
Message No. M1 please come to reception**
(No time stamp) M2 PHONE 020-1647-98452**
Further pressing of the CANCEL button, will cause the pager to scroll through the stored message "headers". If it is required to read a message, do not press the CANCEL button again after reaching the desired message "header", the selected message will then scroll through automatically, after a 1.25s interval. A message will terminate with **, or **? if there is an abnormal termination, or any doubtful elements. The final screen will display
for 2.5s and then the pager will return to quiescent mode, if no further button operations
are instigated.
The speed of message viewing may be changed, by use of the MUTE button. If the MUTE button is pressed during viewing, then the message is held at the current screen. Releasing the MUTE button will cause the next screen to be displayed immediately. If the MUTE is pressed and released during the final screen of a message, then the message "header" is again displayed and the message can be viewed again.
If the CANCEL button is pressed whilst viewing a message, the viewing of that message will be cancelled and the pager will revert to the preview mode, with the next message "header" displayed. If all message "headers" have been viewed, then the pager will revert
to the status interrogation mode.
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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. These will be recalled in reverse order of reception i.e. the latest message first.
2.4.15 Speech Calls (not POCSAG variants)
When a speech call is received, the alert is 4 seconds of a "Stage 3" alert (see Table 3, section 2.4.9). After the alert period, the speech audio channel is opened and once speech has commenced, it may only be terminated by: -
(i) a termination signal from the system encoder; (ii) system time-out (options - no time-out, 10s, 30s, or 150 seconds), or (iii) pressing the CANCEL button. If a call has been terminated during the alert period, a
further press of CANCEL will terminate speech.
If a call is terminated by either of methods (i) or (ii), then the call will remain un-cancelled
and be stored with a new status. If the option is enabled, the pager will then enter the
extended alert mode.
If the call has been terminated by pressing the CANCEL button during the speech period i.e. within the time-out period, or before the termination signal from encoder, then it is possible to re-open the speech channel, with a further press of the CANCEL button.
Any speech calls received whilst in the mute mode and without an override beep code, will
be stored without the speech channel being opened.
2.4.16 Re-playing Stored Speech (not POCSAG variants)
A speech message may be stored by the pager, but replay is not possible until the original speech call has been completed, regardless of whether the calI has been cancelled and the speech channel closed. Up to 120 seconds of speech may be held in the memory, in 5 equal memory segments of 24 seconds each. Any speech message exceeding this period will be heard in full at the point of original reception, but will be truncated for storage purposes. New calls will be allocated to the next available memory slot up to the maximum limit and when full, new messages will overwrite the oldest stored message. If a call has an associated speech element, which was stored when it was received, this speech may be replayed whilst the retrieved message is being displayed.
Any stored speech will start when the message header is displayed. If the CANCEL button is pressed at any time, the replay will be terminated and the next message will be retrieved. Any speech associated with this new message will automatically start to be replayed.
If the MUTE button is pressed at any time during a message replay period, the message header will be redisplayed and the re-call cycle will start over again from the beginning.
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TM1215 Iss. 6.0 RPR750
2.4.17 Speech (BEEP Tone) Volume Adjustment (not POCSAG variants)
To adjust the volume of the speech messages and beep tone where programmed as an option, the pager must be in the quiescent state. First push the MUTE button, followed by the OCR button. The display will show the current volume level and this may then be adjusted by further pressing the OCR button to increase the volume, or the MUTE button to decrease. When the desired level is reached, release any buttons and the pager will return to its quiescent state.
2.4.18 Tone & Speech Only Calls
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).
For a "speech only" call (not POCSAG variants) the message display will read as speech.
In both instances, messages may be preceded by a time stamp or message number.
2.4.19 Beep Code Alpha
Beep Code Alpha is when one particular pre-programmed message is always assigned to a specific beep code. When this code is received, the same message is always activated and displayed. Up to 4 alphanumeric beep code messages, each of up to 14 characters in length, may be programmed into a pager.
2.5 OPTIONS & FEATURES
2.5.1 Time Of Day
The Time Of Day function may be derived from either one of two sources. If the system on
which the pager is to be used has an "off-air" time signal, then this option may be enabled during the software programming of the pager. Alternatively, if time notification is required on a pager not allocated to a system with an "off-air" time signal, then the internal clock may be activated.
Time is displayed during quiescent conditions and takes the form: -
Hours: Minutes
3:17
15:17
Where time has not been selected, then the pager will display on status. Time will be overridden by higher priority status messages such as new message, out of range and
low battery. Off-air time signal - If this option has been selected, the display will show the symbol --:--
in the quiescent state, until the first valid time signal (transmitted every minute) has been
received from the system. If the pager should go out of range of the system and no time signal is received for 2 minutes, then this symbol will also be displayed until a valid signal is again received.
Internal clock - where the off-air time signal option is not enabled, it is possible to activate
and set the pager's internal clock. To set the time, press the CANCEL button during the switch-on sequence and the time-of-day screen will be displayed. This screen will initially show the hours flashing.
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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. To complete the set-up, press the CANCEL button and the pager will continue the switch-on sequence, starting at the address display for MK6/7 variants, or the switch-on message for POCSAG variants.
If an incorrect time is entered, the CANCEL button may be pressed during the switch-on sequence and the initial time-of-day screen will be re-displayed and the time may be re­entered. To reset the time on a pager which has already been switched-on, simply turn
the pager off and on again and follow the set-up sequence. If a pager has the permanent on option activated, reset the pager as per Section 2.4.4. and follow the time-of day set-up
sequence.
2.5.2 Call Comparator
The Call Comparator is a software programmable option, which enables the pager to recognise calls that are a repetition of a previous call, sent within a pre-determined time after the original call. The pager will ignore any repeated calls identified by the comparator. The time limit can be programmed for periods of 30s, 120s and 300s after the original call.
The exception to this will be for message calls, where the original call has not been decoded with 100% confidence. In this case the subsequent call will be accepted and will overwrite the original message in the pager's memory. In both cases however, a normal alert sequence will be generated.
2.5.3 Out of Range Warning
If enabled, the Out Of Range Warning, will notify the user if the pager has not received a
valid signal for a preset time, nominally 3 minutes 30 seconds for on-site variants and 5 minutes for POCSAG variants. Combinations of alert options are available, including visual only, audible plus visual, or either option plus vibrate.
The audible/visual option enables an out of range warning on the display for 4 seconds,
accompanied by a 2s quiet buzz (512Hz). Pagers with the audible warning enabled, will also produce a buzz when the CANCEL button is pressed whilst the receiver is out of range. For the visual only alert, just the message is displayed. In all cases when selected,
the vibrate option will cause several short pulses during the alert period.
After the 4s alert period, the pager will return to the quiescent mode. The range status
may be checked at any time, by using the status interrogation as described in Section
2.4.5.
2.5.4 Low Battery Warning It is advised that this option is not enabled for use with rechargeable cells.
The battery condition is continually monitored and if a low battery voltage is sensed the pager will continue to operate, but the battery must be changed at the earliest opportunity (usually within the next 24hrs., depending upon system traffic levels), or continued operation cannot be guaranteed.
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