Multitone RPR 551IS User manual

Page 1
AMENDMENT INSTRUCTION NO. 234a
AL2 TO TM1188 ISSUE 1
RPR 550IS SERIES PAGING RECEIVERS
OCTOBER 1998
PLEASE NOTE THAT THIS AMENDMENT INSTRUCTION (No. 234a) REPLACES
INSTRUCTION No. 234 WHICH HAD A PAGE ERROR. PLEASE DESTROY ANY
COPIES OF INSTRUCTION 234 YOU MAY HAVE RECEIVED AND USE THE
PAGES SUPPLIED WITH THIS INSTRUCTION SHEET INSTEAD.
The attached amendment should be incorporated in the above Technical Manual
as soon as possible.
In line with the company policy of continued technical advancement, changes to
circuit diagrams and component layout diagrams are continually taking place. It is
not company policy that the technical manual should cover all previous issues of
productsbut only the latest design state. To this end, where an amendment
changes either the circuit diagram or component layout diagram, it may be prudent
to archive the previous diagrams, particularly if your product is of old design.
AFFECTED
PAGES CHANGE
(i)/(ii) Change to address.
(iii)/(iv) AL2 amendments recorded.
(v)/(vi) AL2 amendments recorded. Warnings updated.
(vii)/(viii) Ambiguity in Caution removed. Updates to FCC compliance
statement.
1-1/1-2 Contents List updated.
1-5/1-6 Para 9. New Table added to sub-para b). Sub-paragraphs c)
and d) removed.
1-9/1-10 Existing Table 4 now re-numbered Table 5.
2-13/2-14 Change to wording of Warning.
5-31/5-32 Para 24: Warning added.

AL2 to TM1188 Amendment Instruction No. 234
AFFECTED
PAGES CHANGE
With the compliments of Multitone Electronics plc
PCN Nos. 4883, 4899, 5031, 5183
TPF003-01 [August 1996] Page 2
6-5/6-6 Component change: D9, 13, 15, 16, 17, 18.
6-7/6-8 Component change: R72
7-1/7-2 Contents List updated.
7-9/7-10 Drawing now at Issue 2.
7-21/7-22 Drawing now at Issue 4.
7-23/7-24 Drawing now at Issue 4.

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98) Page (i)
TECHNICAL MANUAL
for
RADIO PAGING RECEIVERS
MODELS RPR 551IS, RPR 552IS AND RPR 553IS
Printed and published in England

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98)Page (ii)
COMPANY LIABILITY
The information in this manual has been carefully compiled and checked for technical
accuracy. Multitone Electronics plc accept no liability for inaccuracies or errors. In line with
the company policy of technical advancement, the information within this document may be
changed. The user should ensure that the correct issue of the document is used. Comments
or correspondence regarding this manual should be addressed to:
Multitone Electronics plc
Technical Publications
Kimbell Road
Basingstoke
Hampshire
RG22 4AD
England
ISSUE DATE
1February 1995
© Multitone Electronics plc 1995

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98) Page (iii)
CONTENTS
Page (i) Title Page
Page (ii) Company Liability
Page (iii) Contents
Page (iv) (v) Effective Page List
Page (vi) Safety Summary
Warnings
Page (vii) Cautions
FCC Part 15 Compliance
Section 1 Introduction and Specification
Section 2 Operating Instructions
Section 3 Technical Description
Section 4 Installation and Commissioning
Section 5 Servicing
Section 6 Spare Parts List
Section 7 Diagrams

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TM1188 Issue 1 AL2 (Oct. 98)Page (iv)
EFFECTIVE PAGE LIST
Page No. Issue Page No. Issue Page No. Issue Page No. Issue
(i) 12-11 13A-1 15-17 1
(ii) 1 AL2 2-12 13A-2 15-18 1
(iii) 12-13 13A-3 15-19 1
(iv) 1 AL2 2-14 13A-4 15-20 1
(v) 1 AL2 2-15 13A-5 15-21 1
(vi) 1 AL2 2-16 13A-6 15-22 1
(vii) 1 AL2 2A-1 13A-7 15-23 1
(viii) 12A-2 13A-8 15-24 1
1-1 1 AL2 2A-3 13A-9 15-25 1
1-2 1 AL2 2A-4 13A-10 15-26 1
1-3 12A-5 14-1 15-27 1
1-4 12A-6 14-2 15-28 1
1-5 13-1 15-1 15-29 1
1-6 1 AL2 3-2 15-2 15-30 1
1-7 13-3 15-3 15-31 1
1-8 13-4 15-4 15-32 1
1-9 1 AL2 3-5 15-5 15-33 1
1-10 13-6 15-6 15-34 1
2-1 13-7 15-7 15-35 1
2-2 13-8 15-8 15-36 1
2-3 13-9 15-9 15-37 1
2-4 13-10 15-10 15-38 1
2-5 13-11 15-11 15A-1 1
2-6 13-12 15-12 15A-2 1
2-7 13-13 15-13 15B-1 1
2-8 13-14 15-14 15B-2 1
2-9 13-15 15-15 16-1 1AL1
2-10 13-16 15-16 16-2 1AL1

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TM1188 Issue 1 AL2 (Oct. 98) Page (v)
EFFECTIVE PAGE LIST (Continued)
Page Issue Page No. Issue Page No. Issue Page No. Issue
6-3 1 AL1 7-1 1 AL2 7-13 17-27 1
6-4 1 AL1 7-2 1 AL2 7-14 17-28 1AL1
6-5 1 AL1 7-3/4 17-15/1617-29/301
6-6 1 AL2 7-31/321
6-7 1 AL2 7-6 17-18 17-33 1
6-8 1 AL1
6-9 1 AL1 7-8 17-20 1
6-10 1 AL1
6-11 1 AL1 7-23/241 AL2
6-12 1 AL1 7-11 1
6-13 1 AL1
6-14 1 AL1
7-5 17-17 1
7-7 17-19 1
7-9/10 1 AL2 7-21/221 AL2
7-12 17-25/261

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98)Page (vi)
ANY COMPONENT MARKED THUS iON CIRCUIT DIAGRAMS MAY ONLY BE
REPLACED BY ANOTHER OF AN IDENTICAL TYPE AND SPECIFICATION. THE
LEAD LENGTH AND LOCATION MUST BE IDENTICAL TO THAT OF THE
ORIGINAL COMPONENT.
THE FOLLOWING PRECAUTIONS MUST BE OBSERVED WHEN CHARGING OR
REPLACING THE BATTERY.
SAFETY SUMMARY
The following information applies to both operating and servicing personnel. General
Warnings and Cautions will be found throughout the manual where they apply.
WARNING statements identify conditions or practices that could result in injury or loss of life.
CAUTION statements identify conditions or practices that could result in equipment damage.
WARNINGS
1. DO NOT attempt to replace or charge a battery in a hazardous area
where explosive gases may be present.
2. Only the battery types listed on the equipment label and in the User
Guide may be used with RPR 550IS series pagers.
3. Only Absence and Charging Racks A3RO and A3RP are to be used
with RPR 550IS pagers. When Charging is enabled on these racks,
only pagers with rechargeable batteries should be inserted into the
Charging Rack pockets.
4. Always ensure that the battery door is secured before use.

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98) Page (vii)
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 WITHIN THIS EQUIPMENT. CARE MUST BE
TAKEN TO ENSURE DAMAGE TO THESE DEVICES IS NOT CAUSED BY HIGH LEVELS
OF STATIC ELECTRICITY.
DO NOT PRESS THE OFF BUTTON WHEN THE PAGER IS IN THE ABSENCE RACK OR
PROGRAMMING POCKET AS THIS MAY CORRUPT THE EEPROM.
FCC PART 15 COMPLIANCE
This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that
this device does not cause harmful interference.
Any unauthorised modification to this device may void the user's authority to operate the
equipment.
Important Intrinsic Safety Information
THIS RADIO PAGING RECEIVER HAS BEEN CERTIFIED TO EUROPEAN HARMONISED
SPECIFICATIONS FOR INTRINSIC SAFETY, EN50 014 (1977) + AMENDMENTS 1-5 AND
EN50 020 (1977) + AMENDMENTS 1-2.
CLASSIFICATION HAS BEEN GRANTED TO EEx ia IIC T5 OR T6 (AMBIENT
TEMPERATURE DEPENDENT) AND EEx ia IIC T4. THE TEMPERATURE (T)
CLASSIFICATIONS ARE DEPENDENT UPON THE BATTERY TYPE USED AND
TEMPERATURE CLASSIFICATION INFORMATION, GIVEN ON THE LABELLING OF EACH
INDIVIDUAL RECEIVER.
MAINTENANCE AND REPAIRS TO THIS EQUIPMENT MAY ONLY BE CARRIED OUT BY
MULTITONE AUTHORISED PERSONNEL. LIABILITY IS NOT ACCEPTED FOR WORK
CARRIED OUT BY OTHER THIRD PARTIES.
EQUIPMENT MUST ONLY BE CONNECTED TO MULTITONE SPECIFIED CHARGING AND
DATA FACILITIES.
EQUIPMENT PROGRAMMING MUST ONLY BE CARRIED OUT BY MULTITONE
AUTHORISED PERSONNEL, USING THE RECOMMENDED APPARATUS.

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TM1188 Issue 1 AL2 (Oct. 98)Page (viii)
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RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98) Page 1 - 1
SECTION 1
INTRODUCTION AND SPECIFICATION
CONTENTS:
1. INTRODUCTION
3. STANDARD FEATURES
4. OPTIONAL FEATURES
SPECIFICATIONS
5. RPR 551IS Receiver Performance
6. RPR 552IS Receiver Performance
7. RPR 553IS Receiver Performance
9Power Supply
10. Code Format
11. Display, Controls and Alerts
12. Memory
13. Beep Code Alpha
14. Operational Environment
15. Dimensions
16. Weight
TABLES Page
1. RPR 551IS Sensitivity Figures 1-3
2. RPR 552IS Sensitivity Figures 1-4
3. RPR 553IS Sensitivity Figures 1-5
4. Battery Life 1-6
5. Typical Pager Weights 1-9

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98)Page 1 - 2
INTRODUCTION
1. The Radio Paging Receiver (RPR) 550 Intrinsically Safe (IS) Series consists of RPR
551IS, RPR 552IS and RPR 553IS pagers. They are small, well constructed, easy to
operate and respond to Multitone Mk7 radio paging transmissions in the HF, VHF and
UHF bands respectively.
2. The user is alerted to a paging call by beep tones, flashing LED and optionally speech
or vibration. Pagers can be programmed to be called individually or as part of a group.
STANDARD FEATURES
3. The following operating facilities and features are provided:
!Call capacity of up to 40,000 individual address codes (10,000 per system number)
!Choice of languages for display indications
!Eight different audible tone alert patterns (beep codes) plus one silent alert
!Alert LED
!Automatic speech switching - speech automatically follows alert tones
!A fourteen character dot matrix Liquid Crystal Display (LCD)
!Alphanumeric display capability
!Memory recall facility storing up to five messages
!Display direction control - normal or reverse orientation
!Charging/absence/programming contacts
!Battery economy circuit
!Bayblend case
!Detachable Griptite clip
OPTIONAL FEATURES
4. The following optional features can be selected:
!Permanent On
!Mute mode - when silent alert required
!Vibrate alert
!Escalating alert
!Alert duration
!Extended alert
!Continuous display

RPR 550IS Series
TM1188 Issue 1 Page 1 - 3
!Group alert call (group of up to 10 or 100)
!Call comparator - inhibits pager from responding to two identical calls within
predetermined time limit when used with a suitable encoder e.g. Access 3000
!Time-of-Day display
!Message time stamp
!Out-of-Range warning
!Battery low indication (not recommended with rechargeable cells)
!Test mode - short alert (engineering use only)
!Detachable Lanyard
!Beep code alpha - pre-programmed messages related to four beep codes
SPECIFICATIONS
RPR 551IS Receiver Performance
5. The receiver performance is as follows:
a) Frequency Range: 25.0MHz to 54.000MHz
b) Frequency Bands: 1: 25.0MHz to 27.499MHz
2: 27.5MHz to 30.499MHz
3: 30.5MHz to 34.999MHz
4: 35.0MHz to 38.999MHz
5: 39.0MHz to 43.499MHz
6: 43.5MHz to 48.499MHz
7: 48.5MHz to 54.000MHz
c) Channel Spacing: 10/12.5kHz or 20/25kHz
d) Sensitivity:
Table 1: RPR 551IS Sensitivity Figures
MEASUREMENT
MODE
TYPICAL
BEST POSITION 8 POSITION
AVERAGE
On Body 15µVm 20µVm
-1 -1

RPR 550IS Series
TM1188 Issue 1Page 1 - 4
e) Adjacent Channel Selectivity: 65dB at 20/25kHz
55dB at 12.5kHz
45dB at 10kHz
f) Image Response: 15dB
g) Spurious Response: 50dB
h) Spurious Emissions to 1GHz: #2nW
j) Intermodulation Response: 55dB
(2+4, 4+8 channel separation)
k) Co-channel rejection: -5dB
NOTE: The figures quoted in (d) to (k) are typical for the frequency range 25MHz to
54MHz and assume an ambient temperature in the range 18EC to 25EC.
RPR 552IS Receiver Performance
6. The receiver performance is as follows:
a) Frequency Range: 138MHz to 174.999MHz
b) Frequency Bands: 1: 138MHz to 148.999MHz
2: 149MHz to 160.999MHz
3: 161MHz to 174.000MHz
c) Channel Spacing: 20/25kHz
d) Sensitivity:
Table 2: RPR 552IS Sensitivity Figures
MEASUREMENT
MODE
TYPICAL
BEST POSITION 8 POSITION
AVERAGE
On Body 14µVm 22µVm
-1 -1
e) Adjacent Channel Selectivity: 75dB at 20/25kHz
f) Image Response: 63dB
g) Spurious Response: 60dB
h) Spurious Emissions to 1GHz: #2nW

RPR 550IS Series
TM1188 Issue 1 Page 1 - 5
j) Intermodulation Response: 60dB
(2+4, 4+8 channel separation)
k) Co-channel rejection: -5dB
NOTE: The figures quoted in (d) to (k) are typical for the frequency range 138MHz
to 174MHz and assume an ambient temperature in the range 18EC to 25EC.
RPR 553IS Receiver Performance
7. The receiver performance is as follows:
a) Frequency Range: 430MHz to 470MHz
b) Frequency Bands: 4: 430MHz to 438.999MHz
0: 439MHz to 444.999MHz
1: 445MHz to 452.999MHz
2: 453MHz to 460.999MHz
3: 461MHz to 470.000MHz
c) Channel Spacing: 12.5kHz and 20/25kHz
d) Sensitivity:
Table 3: RPR 553IS Sensitivity Figures
MEASUREMENT
MODE
TYPICAL
BEST POSITION 8 POSITION
AVERAGE
On Body 14µVm 25µVm
-1 -1
e) Adjacent Channel Selectivity: 65dB at 20/25kHz
55dB at 12.5kHz
f) Image Response: 50dB
g) Spurious Response: 50dB
h) Spurious Emissions to 1GHz: #2nW

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98)Page 1 - 6
BATTERY TYPE RPR551IS ^^ RPR552IS ^^ RPR553IS ^^
Ever Ready R6S 1000hrs 530hrs 500hrs
P550 (N size) * 420hrs 330hrs 300hrs
Duracell, Duracell Procell, Panasonic,
Ever Ready Energizer LR6 1440hrs 960hrs 960hrs
* Use when Vibrate or Adaptor 0261-0255 is fitted.
^On-demand Display
Table 4: Battery Life
j) Intermodulation Response: 55dB
(2+4, 4+8 channel separation)
k) Co-channel rejection: -5dB
NOTE: The figures quoted in (d) to (k) are typical for the frequency range 430MHz
to 470MHz and assume an ambient temperature in the range 18EC to 25EC.
8. For the RPR 550IS Series the voltage of the pager battery should be above the low
battery trigger point. At temperatures between the ambient and maximum/minimum,
performance will be at an intermediate value. At temperature extremes degradation of
sensitivity shall typically not exceed 6dB.
Power Supply
9. The power supply specifications are as follows:
a) Voltage - Normal: 1.5V Nominal
- Rechargeable: 1.2V Nominal
b) Typical Battery Life:

RPR 550IS Series
TM1188 Issue 1 Page 1 - 7
NOTE: The battery life estimate is based on the following:
System size 50 Pagers
Length of working day 10 hours
System usage 20 calls/hour
Average number of calls per pager 2 speech calls/day
2non-speech, 10 digit message
calls/day
Type of calls Non-batched, 1.25s preamble
Duration of alert - non-speech 16s uncancelled, no Extended alert
- speech 4s with 30s mean speech time
User time (e.g. Status/Memory Recall) 20s/hour
Code Format
10. The code format is Manchester Encoded Multitone Mk7 Radio Paging Code.
Display, Controls and Alerts
11. The display, controls and alerts are as follows:
a) Liquid Crystal Display: 14 character Dot Matrix LCD
7 x 5 dot characters
4.36 x 1.75mm character size
Viewing Area 33.1 x 5.8mm
b) Control Switches: On/Cancel/Memory Recall: Push
button
Mute: Push button
Off: Recessed push button
c) Visual Alert: High intensity red LED

RPR 550IS Series
TM1188 Issue 1Page 1 - 8
d) Audible Alert, Full Volume (typical): 80dB SPL @ 30cm
e) Audible Alert* (escalating option): Stage 1: 4seconds of LED and
vibrate.
Stage 2: 4seconds of low
volume Mk7 beep
patterns (70dB to 75dB
SPL typical) at 2.7kHz,
with LED and vibrate.
Stage 3: 8, 16, 32 seconds or
continuous full volume
Mk7 beep patterns
(80dB SPL typical at
2.7kHz) with LED and
vibrate.
* If vibrate fitted: two seconds on/two seconds off for the alert duration.
f) Audible Alert - Out-of-Range and Low Battery Buzz, 2.7kHz tone modulated with
512Hz tone.
Memory
12. The memory specifications are as follows:
a) Maximum number of calls stored: 5
b) Maximum message length: 60 characters (limited by encoder)
c) Total message storage: 256 characters
Beep Code Alpha
13. Beep code alpha messages are alphanumeric messages which are triggered by beep
codes. There can be up to four messages, each with a maximum of 14 characters.

RPR 550IS Series
TM1188 Issue 1 AL2 (Oct. 98) Page 1 - 9
COMPONENTS OF PAGER RPR 550IS
SERIES
goz
Without vibrate, without battery 84 2.9
Without vibrate, with battery 109 3.8
With vibrate, N cell 101 3.5
Table 5: Typical Pager Weights
Operational Environment
14. The operational environment is as follows:
a) Temperature: -10EC to +55EC
b) Humidity: 90% RH (Non-Condensing)
c) Storage Temperature: -20EC to +70EC
NOTE: There may be some degradation of display performance below 0EC.
Dimensions
15. The dimensions are as follows:
a) Width: 56mm (2.2ins)
b) Length: 80mm (3.2ins)
c) Thickness: 18mm (0.7ins)
Weight
16. Refer to Table 5 for the weight of the pager.

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