Park Air Systems BT6M VHF Airband mobile transceiver User Manual PAE Header

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T6M Service Manual
Issue 1
PARK AIR ELECTRONICS LTD
NORTHFIELDS
MARKET DEEPING
PETERBOROUGH
PE6 8UE
TEL:(01778) 345434
FAX:(01778) 342877
Copyright Information
© 2000 Park Air Electronics
All rights reserved. No part of this publication may be reproduced,
transmitted, transcribed, or stored in a retrieval system, or translated into
any language without the written permission of Park Air Electronics. No
part of any copyrighted computer programs contained in the products
referred to in this manual may be copied or reproduced without the express
written consent of Park Air Electronics.
Park Air Electronics reserves the right to change the products described in
this manual without prior notice.
is a trademark of Park Air Electronics.
is a trademark of Intek Global Corporation
IBM and PC are trademarks of IBM Inc.
I2C is a trademark of Philips
Federal Communications Commission (FCC) Regulations
♦
This device complies with Part 15 of the FCC Rules. Operation is
subject to the condition that this device does not cause harmful
interference.
♦
You are required to obtain a station license before transmitting from
your mobile equipment.
♦
This equipment is only licensed for operation on 25 kHz channel
spacing. Operation on 8.33 kHz channel spacing is restricted to
European customers.
♦
The mobile transmitter power output must not exceed the output
necessary for satisfactory technical operation taking account of local
conditions and the area to be covered.
♦
The mobile transmitter frequency and parameters should be checked by
authorised service personnel before use, and at least yearly thereafter.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page i
Safety Information
♦
DO NOT operate this equipment with the antenna close to or touching
eyes, face, or exposed body parts.
♦
KEEP any mobile equipment containing a transmitter out of reach of
children.
♦
AVOID holding the transmit (PTT) switch in the ‘ON’ position when not
communicating.
♦
DO NOT operate equipment at filling stations.
♦
DO NOT operate equipment in vicinity of
explosives or explosive atmospheres (e.g. in a
blasting quarry).
♦
The Power Amplifier Module used in these mobile
radios contains beryllium oxide, which is extremely
toxic. In the unlikely event of coming into contact
with beryllium oxide, wash the affected area
thoroughly with soap and water. If the skin is
broken obtain medical assistance. If there is eye
contact, wash for 15 minutes with running water,
including under the eyelids and seek medical
attention. If ingested or inhaled, seek medical
attention immediately.
Repairs, Modifications and Maintenance
♦
If any operational difficulties arise while using this product, report them
to authorized service personnel as soon as possible.
♦
This system contains no user serviceable parts. Unauthorized
adjustments or modifications will void the warranty and may lead to
emissions outside FCC limits.
♦
DO NOT connect an external RF power amplifier to this equipment.
Patent Information
♦
Page ii
The Linear Modulation techniques described in this publication are
subject to Patents issued to the British Technology Group (BTG) and
Linear Modulation Technology (LMT)
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
♦
Patent No’s are: BTG – UK 2161661, 2163326; US 4691375, 4679243:
LMT - UK 2243058, 2274231, 2272589, 2293935: EU 0447237,
0725495, 0598585, 0648012, 0706259: US 5249202, 5381108,
5507017, 5623226.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page iii
Table Of Contents
Section
10
11
12
13
Page iv
INTRODUCTION
SPECIFICATION
EQUIPMENT DESCRIPTION
INSTALLATION
OPERATION
PERFORMANCE TESTING
DETAILED CIRCUIT DESCRIPTION
CIRCUIT DIAGRAMS
BOARD LAYOUTS
GENERAL ASSEMBLIES
PARTS LIST
ACCESSORIES AND LEADS
LOOMS
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Amendment Schedule
Amendments to this manual will be issued to incorporate changes or detail additional
information. Amended pages will be identified by the amendment date and number, which will
be shown at the foot of the page. Record incorporation of amendments to this manual on this
page.
If a new issue of this manual is made all amendments will be incorporated.
Date
Amdt. No.
Date Incorporated
Reason for Change
If you find any errors or omissions in this manual, or you have any suggestions for
improvements please write to the address shown on the front page.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page v
INTRODUCTION
1 INTRODUCTION
The Park Air Electronics (PAE) mobile transceiver Type T6M is a multichannel VHF AM equipment operating in the frequency range 118 to 137 MHz
with a bandwidth of 8.33 or 25 kHz. The transceiver is designed for vehicle
mounting via a bracket, usually around the dash board area. The equipment,
which operates from a +13.2 volt, is supplied with mounting bracket and plug
in microphone.
The transceiver provides a nominal 8 watt output.
The required frequencies, priority frequencies and scan facilities are normally
programmed, to the user’s requirements, during manufacture or by the
equipment supplier. If a user wishes to programme the equipment, then disk
based programming software and a programming lead can be supplied by
PAE.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 1-1
SPECIFICATIONS
2. T6M Series Specifications
The following specifications are intended for testing and servicing the mobile
radio. Specifications are subject to change without notice.
2.1 General
Air Interface
Operating Mode
Frequency Range
Receive
Transmit
Channel Bandwidth
Channel Increment
Input Voltage
Max Receive Current
Max Off Current
Audio Output
Temperature Range
Normal
Operating
Storage
Dimensions
Width
Depth
Height
Weight
Approvals
None
Single Frequency Simplex
118 - 137 MHz
118 - 137 MHz
25 kHz and 8.33 kHz.
8.33 kHz
13.2 VDC nominal (10.8 V to 18 V),
negative ground
2A
100mA
4W into 4ohm external speaker
(<10%THD)
+15°C to +35°C
-20°C to +55°C
-40°C to +85°C
177 mm (6.95”)
228 mm (8.98”)
50 mm (1.95”)
1.75 kg (±0.1kg)
CE, SERPS, MOPS
EN300 279 Ed 2
EN 300 676
2.2 Receiver
Sensitivity
Selectivity
Intermodulation
Spurious and Image Rejection
Audio Power Output
Distortion
RF Input Impedance
-100dBm
50dB @ 8.33kHz, 60dB @ 25kHz
60dB
75dB
4 Watts.
<10% THD
50 ohms
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 2-1
SPECIFICATIONS
2.3 Transmitter
RF Output Power, Nominal
Spurious
Harmonics
Audio Modulation
RF Load Impedance
Frequency Stability
Page 2-2
8 Watts
-46dBm
-36dBm
AM
50 ohms
± 1.0ppm (normal)
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
EQUIPMENT DESCRIPTION
3. Section Index
3.
Section Index
3-1
3.1
General
3-2
3.2
T6M Series Mobile Front panel
3-2
3.3
Mobile Radio Programming
3-2
3.3.1
Programming Interface Lead
3-2
3.3.2
Programming Software
3-2
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 3-1
EQUIPMENT DESCRIPTION
3.1 General
The T6M series mobile radio is designed to operate in single frequency
simplex mode on the International Air Band allocation (118-137 MHz mobile
transmit and receive).
The mobile radio is field programmable, allowing it to be customized both for
the frequency allocation for which it is intended, and for the particular user.
Refer to the built in help facilities of the Mobile Programming Software for
more information.
The mobile radio is designed to be mounted in the driver’s compartment of a
road vehicle. It can withstand the vibration, shock and extremes of
temperature typically encountered in this environment. The mobile radio’s
basic construction consists of a die-cast alloy chassis, and an injection
molded ABS front panel.
3.2 T6M Series Mobile Front panel
POWER
BUSY
TX
VOL
SCN
CH
SEL
SQL
PRI
3.3 Mobile Radio Programming
As well as the standard accessories supplied with the mobile radio (listed in
the installation section of this manual), the following additional accessories
can be used:
3.3.1
Programming Interface Lead
For programming purposes the microphone connector on the mobile radio is
connected directly to the serial port of a PC using a special programming
interface lead.
3.3.2
Programming Software
The personality of the mobile radio must be programmed before it can be
put into service in a system. This is normally done at the time of
manufacture or by the equipment supplier. Special programming software is
Page 3-2
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
EQUIPMENT DESCRIPTION
available for this purpose, which runs on a PC. The software is available on
3.5” floppy disks. The software contains built in help features.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 3-3
EQUIPMENT DESCRIPTION
This page blank intentionally
Page 3-4
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
INSTALLATION
4. Section Index
4.1General...................................................................................................................... 4-2
4.1.1
Scope of Instructions ................................................................................... 4-2
4.1.2
Tools and Test Equipment Required. .......................................................... 4-2
4.1.3
Unpacking ................................................................................................... 4-2
4.1.4
Mobile Radio Programming ......................................................................... 4-2
4.1.5
Power Source.............................................................................................. 4-2
4.1.6
Selecting a Mounting Location..................................................................... 4-3
4.2Mobile Radio Installation ............................................................................................ 4-3
4.2.1
Mounting Mobile Radio, Microphone and Speaker....................................... 4-3
4.3Mobile Unit Connections ............................................................................................ 4-4
4.4Power Cable Installation ............................................................................................ 4-4
4.5Antenna Connection .................................................................................................. 4-6
4.5.1
Location....................................................................................................... 4-6
4.5.2
Fitting Antenna to Fiberglass Vehicles......................................................... 4-7
4.5.3
Antenna Feeder........................................................................................... 4-7
4.5.4
Antenna DC Check...................................................................................... 4-7
4.6Loudspeaker Connection ........................................................................................... 4-7
4.7Serviceability Check - General Operation .................................................................. 4-7
4.8Troubleshooting Flow Chart - General Operation....................................................... 4-8
Figure 4-1 Mobile Radio Mounting Bracket - Dimensions
4-3
Figure 4-2 Mobile Connections
4-4
Figure 4-3 Antenna Locations
4-6
Figure 4-4 Antenna Radiation Patterns
4-6
Figure 4-5 - T6M Series General Troubleshooting Flow Chart
4-9
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 4-1
INSTALLATION
4.1 General
4.1.1
Scope of Instructions
The following installation instructions are a guide to installing the mobile radio. The use of the
mounting hardware is described and the required electrical connections are shown. A
serviceability check is described with fault-finding information.
4.1.2
Tools and Test Equipment Required.
Power drill
Hole cutter
Cross head screwdrivers
Emery paper
Connectors
Crimp tools
Wire cutters
Earthing braid
Torx screwdriver
Torx screwdriver
Hex nut spinner
Hex nut spinner
IC extraction tool
RF Power & VSWR Meter
Programming interface lead
4.1.3
M3 (No. 10)
M2.5 (No. 8)
M3 (5.5mm)
M2.5 (5mm)
CEKA T2371 or equivalent
Bird 4391 or equivalent
Special PC to mobile microphone socket lead
(part number LM030400055)
Unpacking
Unpack the mobile radio install kit and check the contents against the packing list enclosed
with the mobile.
4.1.4
Mobile Radio Programming
To operate on the system, the mobile radio requires certain “personality” information to be
entered into memory
The mobile radio must therefore have been programmed before it can be placed in service.
This is normally done at the time of manufacture or by the equipment supplier. To program
the mobile radio, use the Mobile Programming Software.
4.1.5
Power Source
The mobile radio is designed to operate from a 13.2 VDC nominal, negative ground electrical
system. This type of electrical system has the negative battery terminal connected directly to
the vehicle chassis. For vehicles with a 24 V battery or where there must be isolation between
the battery and the equipment, a suitable DC-DC converter should be used.
Page 4-2
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
INSTALLATION
4.1.6
Selecting a Mounting Location
Choose a safe and sensible location for the mobile radio and mounting bracket, ensuring that
the installation:
♦ Is easy to operate when seat belts are worn.
♦ Does not inconvenience driver or passengers when seated, or when entering or exiting the
vehicle.
♦ Will not injure occupants if the vehicle suffers an impact.
♦ Does not interrupt the airflow from heater or air-conditioning vents.
Suitable mounting places include the dash, console or transmission hump.
Avoid mounting in small enclosed spaces (e.g. glove lockers). To prevent excessive selfheating, the mobile radio should have an unobstructed airflow space of at least 20 mm at the
rear.
4.2 Mobile Radio Installation
4.2.1
Mounting Mobile Radio, Microphone and Speaker
Check that the mobile mounting bracket fixing screws will not damage any cables, brake or
fuel lines when they are fitted. Then install the mounting bracket using the self-tapping screws
provided. Mounting bracket dimensions and fixing hole centers are shown in Figure 4-1.
Install the mobile radio in the bracket using the rubber grips and fixing knobs included in the
kit. The rubber grips can be fitted in two ways. One way locks the mobile radio rigidly in the
bracket. The other provides a friction mount allowing the mobile radio to be tilted to the
desired angle.
52 mm
189 mm
48 mm
Hole
4.5 mm
diameter
150 mm
Figure 4-1 Mobile Radio Mounting Bracket - Dimensions
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 4-3
INSTALLATION
Install the microphone rest in a convenient location using the screws provided.
Plug the microphone lead into the socket located on the underside of the front panel of the
mobile radio and fit the strain relief grommet into place.
Install the speaker in a location where it can be easily heard, using the mounting bracket and
screws provided.
4.3 Radio Unit Connections
ANTENNA
FIELD PROGRAMMER
MICROPHONE
BATTERY
FUSE HOLDER
SPEAKER
MOBILE UNIT
BNC
CONNECTOR
Ignition Sense
POWER SUPPLY
CONNECTOR
Figure 4-2 Mobile Connections
4.4 Power Cable Installation
Where possible disconnect the vehicles main positive DC supply cable from the battery to
prevent damage from accidental short circuits during the installation.
In some cases this may cause problems with the loss of engine management information or
radio key codes. Check with the customer to see if this is the case before disconnecting the
battery. Power saver devices are available which plug into the cigar lighter or accessories
socket and prevent loss of memory information on vehicle systems.
Route the power cable to the battery. If there is excess cable, cut it to the required length. If it
is necessary to drill a hole in the firewall or bulkhead to route the cable through then fit a
grommet and seal it when the installation is complete.
Page 4-4
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
INSTALLATION
Fit the in-line fuse holder in the positive (Red) lead. The fuse protects against short circuits in
the cable run, and so should be located near the battery.
Connect the black cable to the negative battery terminal connector and the red cable to the
positive battery terminal connector.
Note: Both leads of the power cable should be connected directly to the vehicle battery
terminals. Connection to other points may result in increased interference from the vehicle’s
electrical system and excessive voltage drop. If noise is still a problem, an DC noise filter
should be fitted.
In some cases a master isolation switch is fitted to the vehicle (e.g. in the case of emergency
vehicles) and it may be a legal requirement to wire to the switched side of the supply.
If required connect the ignition sense lead to the ignition switched supply on the vehicle.
Plug the power cable into the power supply in-line connector on the mobile radio, and
reconnect the positive lead to the battery.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 4-5
INSTALLATION
4.5 Antenna Connection
Install the antenna according to the manufacturer’s instructions.
4.5.1
Location
For best all round performance of the mobile radio, the antenna should be mounted in the
center of the roof. Alternative positions give degraded performance, the numbers on the
diagram below giving the order of preference.
Figure 4-3 Antenna Locations
Figure 4-4 Antenna Radiation Patterns
Warning: Under no circumstances should the antenna be located near to a
fuel filler cap (i.e. not closer than 300mm).
Page 4-6
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
INSTALLATION
In practice the siting of the antenna is a compromise between performance and practicality. If
a sunroof is fitted to the vehicle then site the antenna so that it will not be damaged when the
sunroof is opened. Mounting at the front of a sunroof can cause annoyance due to wind noise
from the antenna when the sunroof is opened.
Abrade the underside of the antenna hole with coarse emery cloth to remove paint and
produce a clean, bright bare metal surface. This will provide a good contact for the antenna
ground. Smear the surface lightly with silicone grease prior to tightening the antenna mount to
prevent corrosion.
4.5.2
Fitting Antenna to Fiberglass Vehicles
A separate ground plane must be installed for fiberglass vehicles. This can take the form of a
aluminum metal plate or close mesh. The ground plane must extend to at least a quarter of a
wavelength in every direction. Alternatively two ‘crossed’ aluminum strips can be used. Again
the distance from the antenna mounting point to the end of each strip must be at least a
quarter of a wavelength.
It will normally be necessary to use an antenna with a longer shank for fiberglass vehicles due
to the greater thickness of the material.
4.5.3
Antenna Feeder
Note: In the case of crimp connectors, use only the correct crimping tool.
Use a suitable, low-loss 50 Ω co-axial cable to provide a continuous run between the antenna
and the mobile radio equipment. Excess coaxial cable should not be coiled up as this may
cause interference and effect vehicle systems. Fit the correct antenna connector at the mobile
radio end of the feeder using either crimp or soldered connections as appropriate.
4.5.4
Antenna DC Check
♦ Check for low resistance (<0.1 Ω) between the center pin of the coaxial connector and the
antenna radiator
♦ Check for high resistance between the center pin of the coaxial connector and the vehicle
chassis
♦ Check for low resistance between the body of the connector and the vehicle chassis
Note: Some antennas are DC earthed. If this is the case consult the manufacturer’s
installation instructions.
4.6 Loudspeaker Connection
The loudspeaker is connected to the mobile radio via PL1 (the power supply and speaker
connector shown in Figure 4-2), pins 3 and 7.
4.7 Serviceability Check - General Operation
Once the mobile radio, its accessories and antenna are installed, carry out a serviceability
check as follows:
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
Page 4-7
INSTALLATION
1.
Place the directional power or VSWR meter in series with the antenna
feed. A Peak Envelope Power meter should be used.
2.
Start the vehicle and allow to idle for 1 minute to ensure that the battery
voltage is at the correct level for testing.
3.
Switch on the mobile radio using the on/off selector/switch, or switch on
ignition if ignition sensing is utilized, and check that the LED’s and
display function and that the startup warble is heard.
4.
Select a suitable channel that can be used for test purposes and press
the PTT to cause the mobile to transmit. Measure the PEP and VSWR.
5.
PEP should be between 7 and 30 Watts, dependent on modulation, and
VSWR less than 1.5:1.
6.
Carry out a functional check by setting up a voice call. Check that the
received noise is acceptable. If not it will be necessary to carry out
suppression of the vehicle electrical system
7.
It is important to check that the mobile radio does not affect the
operation of any vehicle systems such as lights, electronic ignition,
engine management system and anti-lock brakes. Other electronic
devices fitted to the vehicle, such as radio/cassette player or cellular
telephone, should also be checked. Check that these systems still
operate correctly when the mobile radio is transmitting.
8.
If the mobile radio does not function correctly refer to the fault-finding
section in this chapter or fit another unit.
9.
A vehicle installation report should be completed. An example is
provided at the end of this manual.
4.8 Troubleshooting Flow Chart - General Operation
If the mobile radio does not pass the serviceability check, the installation troubleshooting flow
chart (see Figure 4-5 )
For reference:
SPU : Signal Processing Unit (PCB)
EXP : Expander card (PCB)
RFU : Radio Frequency Unit (PCB)
FPU : Front Panel Unit (PCB)
PA
: Power Amplifier (PCB)
Page 4-8
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
INSTALLATION
Figure 4-5 - T6M Series General Troubleshooting Flow Chart
START
Does the unit
switch on?
Yes
Correct FPU
control & channel
selection?
Yes
Unit
transmits at
correct
frequency
and power?
Yes
Receive
sensitivity OK?
Yes
Correct 2-way
conversation
operation?
Yes
REPAIR COMPLETE
No
No
No
No
No
Check battery
connections, fuses &
pigtail connections
Check personality
programming
Check antenna,
Connections &
power - ref sect. 5.9
Check antenna &
connections
Check antenna
Check microphone,
speaker, antenna
connections
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
No
No
No
No
No
Remove cover. Check
internal DC connections
& fuse. Remove front
panel & check
connections. Check
EXP card is seated
correctly.
Check FPU, SPU &
EXP connections
Check RFU/PA & PA/
BNC connections
Check RFU/PA & PA/
BNC connections
Remove lid & check
internal connections for
speaker
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
No
No
No
No
No
Replace EXP, SPU,
FPU, RFU in turn
Change FPU/SPU+EXP
lead.
Change EXP, SPU in
turn
Replace RFU, PA, SPU
in turn
Replace RFU, PA, SPU
in turn
Replace microphone,
FPU, SPU, RFU in turn
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
Fault cleared?
Yes
Yes
Fault cleared?
UNIT FAIL
RETURN TO
MANUFACTURER
No
No
No
No
No
Page 4-9
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
INSTALLATION
This page blank intentionally
Page 4-10
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
OPERATION
5. Section Index
5.1
Operation ..................................................................................................5-2
5.1.1
5.1.2
5.2
Switching on / off - manual .............................................................................5-2
Switching on / off - Ignition sense ...................................................................5-2
Modes of operation ...................................................................................5-2
5.2.1
5.2.2
5.2.3
5.3
5.4
5.5
5.6
5.7
5.8
Normal mode..................................................................................................5-2
Priority mode ..................................................................................................5-4
Scan mode .....................................................................................................5-4
Programmable options ..............................................................................5-6
Warning sounds. .......................................................................................5-7
Key beeps. ................................................................................................5-8
Display Blanking........................................................................................5-8
Fault Codes...............................................................................................5-8
Using the programmer ..............................................................................5-9
5.8.1
5.8.2
5.8.3
5.8.4
5.8.5
5.8.6
5.8.7
5.8.8
5.8.9
5.8.10
5.9
Installing the mobile programming software....................................................5-9
Operating hints...............................................................................................5-9
Creating a new mobile personality..................................................................5-9
Saving a personality .....................................................................................5-13
Recovering a saved personality....................................................................5-13
Programming a personality into a mobile......................................................5-13
Reading the personality from a mobile .........................................................5-14
Printing a personality report..........................................................................5-14
Getting a mobile’s serial number and firmware version.................................5-14
Programming new firmware into a mobile ......................................................5-14
Test Mode ...............................................................................................5-15
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
PAGE 5-1
OPERATION
5.1 Operation
5.1.1
Switching on / off - manual
To switch on, press the PWR button until the display shows “On”, about 1 second, then
release the button. The mobile makes a warble sound, then a few seconds later the display
shows the initial operating frequency. If the mobile displays “c Err” (critical error) at start-up,
then it has probably no personality programmed into it. See sections 5.8 for instructions on
programming.
To switch off, press the PWR button until the display shows “Off”, then release the button.
5.1.2
Switching on / off - Ignition sense
If ignition sense is required then connect the ignition sense lead (Accessory Lead Pin 1 –
L033ACC4000) to the vehicle ignition sense. If ignition sense is not required then leave the
ignition sense unconnected.
When ignition sense is connected, the mobile switches on when the vehicles ignition is
switched on. When the vehicle ignition is switched off, the mobile remains on for a period of
two hours before switching itself off. The mobile may be switched off manually during that
period by using the PWR button, described above.
5.2 Modes of operation
The mobile has three main modes of operation:
5.2.1
•
Normal mode
•
Priority mode
•
Scan mode
Normal mode
•
Channels are selected using the CH é and CH ê buttons. These buttons step
through the programmed channels one at a time.
•
The SEL é and SEL ê buttons may also be used for channel selection. These
buttons step 10 channels at a time.
•
Both the CH and SEL buttons auto-repeat when held down.
If the highest programmed frequency is reached when stepping up through the channels, the
mobile wraps round to the lowest programmed frequency. If the lowest programmed
PAGE 5-2
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
OPERATION
frequency is reached when stepping down through the channels, the mobile wraps round to
the highest programmed frequency.
Channel frequencies are displayed in ICAO format, e.g.
Actual operating
frequency
Channel bandwidth
Display
118.000 MHz
25kHz
118.000
118.000 MHz
8.33kHz
118.005
118.008 MHz
8.33kHz
118.010
118.017 MHz
8.33kHz
118.015
118.025 MHz
25kHz
118.025
118.025 MHz
8.33kHz
118.030
118.033 MHz
8.33kHz
118.035
118.042 MHz
8.33kHz
118.040
Whilst the mobile is receiving, the loudspeaker volume may be altered using the VOL é and
VOL ê keys. The volume keys only affect the volume level of the received audio; the
volume of the confidence tones is unaffected.
Squelch may be enabled / disabled, or the squelch level altered using the SQL button.
To enable squelch, or to see the squelch level, press the SQL button. The display will show
an “S” and the current squelch level. If you do nothing else, then the display returns to the
current frequency after a few seconds.
To disable squelch, press SQL again whilst the squelch level is being displayed. The display
will show “S OFF” for a few seconds before returning to the current frequency.
To alter the squelch threshold use the volume keys whilst the squelch level is being
displayed. If you are hearing unwanted noise, press the VOL é button to increase the
squelch threshold. If you are not hearing a wanted signal then press VOL ê to lower the
squelch threshold. After you have adjusted the threshold the mobile will automatically return
to the normal frequency display after a few seconds.
The yellow LED (busy) lights to indicate that the receiver is unmuted by a received signal,
i.e., a signal that exceeds the squelch threshold.
Display blanking may operate whilst the mobile is receiving in normal mode. When display
blanking is active in normal receive mode, a flashing horizontal bar replaces the frequency
display. If the display blanks then it may be reinstated by pressing either volume button, or
by pressing the PTT button.
To transmit, press the PTT button and talk. Whilst you are transmitting the red Tx LED will
light.
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OPERATION
It may be that the mobile does not transmit when you press the PTT button. This may
happen if there is a mobile fault or if transmitting is inhibited. In either case, the red Tx LED
will not light. If the mobile is programmed to produce warning sounds then you will hear a
warning sound. If there is a fault, a Fault Code is displayed whilst the PTT button is held
down. Fault Codes are described in Section 5.7. Transmit inhibit options are described in
sections 5.3 & 5.7.
A mobile may be programmed to transmit indefinitely, or to limit the duration of a
transmission. If transmission time is limited then mobile produces warning beeps 10
seconds before the end of the transmission. When the allowed transmission time is reached
the mobile stops transmitting, the red Tx LED goes out, and a warning sound is produced if
warning sounds are enabled.
5.2.2
Priority mode
Priority mode gives you quick access to your most frequently used channels. Up to 15
channels may be programmed into the mobile’s priority channel list. Select priority mode by
pressing the PRI button.
Priority mode operates like normal mode with the following exceptions.
•
Every few seconds the display shows “P” to remind you that you are in
priority mode.
•
Channels are selected using the SEL é and SEL ê keys.
•
Display blanking in priority mode causes the display to show a blinking “P”
rather than a bar.
You may leave priority mode in one of three ways.
5.2.3
•
Press PRI to return the previous mode (normal or scan).
•
Press CH é or CH ê to go to normal mode.
•
Press SCN to go to scan mode.
Scan mode
In scan mode the mobile scans a range of predefined channels looking for a busy one. A
busy channel is defined as a channel with a received signal strength greater than the squelch
threshold. A mobile may be programmed with up to 15 scan groups, with up to 15 channels
in each group.
When the mobile finds a busy channel you will be able to listen to that channel. What
happens next depends on the way the mobile is programmed. It has two possible seek
modes, “Hold” and “Pause”.
If Hold mode is programmed then the mobile remains on the channel until you press the CH
é button to resume scanning.
PAGE 5-4
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
OPERATION
If Pause mode is programmed then the mobile remains on channel for 6 seconds then
resumes scanning automatically. You can override this, making the mobile hold, by pressing
the CH é button or the microphone PTT button before scanning resumes. To stop holding,
and resume scanning, press CH é once more.
Scan mode is selected by pressing the SCN button. Once in scan mode a scan group is
selected using the SEL é and SEL ê keys. During scanning the display shows “
the number of the current scan group.
Scan mode is cancelled by:
•
Pressing the SCN button to go to normal mode.
•
Pressing the PRI button to go to priority mode.
If the mobile is holding or paused on a channel then pressing the PTT allows you to transmit,
unless there is a transmit fault or transmission is inhibited. See sections 5.3 & 5.7 for more
information on transmit inhibit and transmit faults.
Display blanking is not operative in scan mode.
Channels may be locked out of the current scan group by pressing the CH ê button whilst
the mobile is paused or holding on the channel to be locked out. This lock out is temporary;
all locked out channels are reinstated when scan mode is cancelled.
Squelch is automatically enabled when scan mode is selected.
Channels may be programmed into more than one scan group.
Scan and priority modes are mutually exclusive.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
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OPERATION
5.3 Programmable options
The following general options are programmable via the mobile unit’s serial programming
port. An external, PC based, programming software package and associated interconnection
leads can be supplied to provide access to these features.
Range
Default
Notes
Display On or off
blanking
Off
See description below.
Display 10 – 300
blanking time seconds
60
See description below.
Maximum 30 – 300
transmit time seconds, or
unlimited
60
Use this option to limit the
maximum continuous time
transmit duration.
Hold on scan On or off
mode
On
Described in scan mode
section.
Key beeps On or off
On
See description below.
Warning beeps On or off
On
See description below.
See description below.
An empty
string
A free format text string that
you may use to identify the
mobile.
Yes
Indicates if channel
programming data is to
include descriptive strings.
Selecting this option
reduces the maximum
number of channels from
760 to 400.
0.5
seconds
Squelch must be open for
this time before an inactive
channel is considered busy.
Off
When on, the mobile scans
for the strongest frequency
within a 25kHz channel.
Warning beep 1 – 7
volume
Personality 46 character
description alphanumeric
string
Use channel Yes or no
strings
Busy on time 0.1 – 5
seconds
Offset On or off
channels
PAGE 5-6
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OPERATION
These options are programmable for each of the channels programmed into the mobile.
Range
Default
Frequency Any frequency
supported by
the mobile
Priority Yes on No
channel
Notes
Enter this in ICAO format,
which defines both the
frequency and the
bandwidth.
No
Up to 15 channels may be
defined as priority channels.
Not
assigned
to a scan
group.
Up to 15 channels may be
assigned to each of the 15
scan groups. A channel
may be in more than one
group.
Transmit No inhibit,
inhibited always inhibit
or inhibit if
busy
No inhibit
This option can be used to
prevent the mobile
transmitting on a particular
channel.
Identification 16 character
string alphanumeric
string
An empty
string
A free format text string
describing the channel.
Scan group 1 – 15 or not
assigned
5.4 Warning sounds.
Warning sounds may be enabled / disabled when the mobile is programmed.
The volume of key beeps and warning beeps is not affected by the volume controls. The
volume of these sounds is set when the mobile is programmed.
When warning beeps are enabled, the following conditions cause error beeps when the user
attempts to transmit
•
A mobile fault is preventing transmission.
•
Attempting to transmit on a channel with the “transmit inhibit” option set to
always inhibit.
•
Attempting to transmit on a busy channel with the “inhibit if busy” option
selected.
•
Imminent transmitter timeout.
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OPERATION
5.5 Key beeps.
The mobile may produce a single beep whenever a button is pressed. This option is
selected during programming. The volume is the same as warning sounds and is set when
the mobile is programmed.
5.6 Display Blanking
Display blanking is an option that can be enabled when the mobile is programmed. The
display blanking time is programmable.
When display blanking is enabled, the normal frequency display is replaced by a flashing bar,
if the mobile is not used for the display blanking time.
A blanked display is reinstated by pressing any button, including the on / off button, or by
pressing the microphone PTT button. It is recommended that the volume buttons be used as
this reinstates the display without altering any settings.
Display blanking only operates when the mobile is receiving in normal mode or in priority
mode.
5.7 Fault Codes
F1 Synthesiser failed.
F2 Unstable output.
F4 Over temperature. This may occur during long or repeated
transmissions. The fault clears itself as the mobile cools down.
F8 Reflected power problems. May occur if no antenna is connected or if
the antenna, antenna cable, or connectors are faulty.
F16 Low supply voltage. May be caused by low power supply voltage or
high resistance connections.
F32 High voltage. Probably caused by a power supply fault.
PAGE 5-8
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
OPERATION
5.8 Using the programmer
5.8.1
Installing the mobile programming software
The programming software works with Windows 95 and 98 only. A mouse, or other
pointing device, is strongly recommended.
To install, run “Setup.exe” from the disk provided. This creates a program group and
icons for the programmer. An uninstall option is created automatically.
5.8.2
Operating hints
To help you use the programmer, hints are displayed on the status line at the bottom
of the programmer’s window. This happens whenever you position your mouse
pointer over a programmable option. For options that require you to enter numbers
or text, the hints will tell you what the allowed options are.
The status line also shows the progress of programming operations.
5.8.3
Creating a new mobile personality
Select the File | New option from the menu. This resets all options to default values
and clears all the entries in the frequency table except one. Select the “General”
page.
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OPERATION
Next, decide if you want to store a descriptive text for any of the frequencies you wish
to use. If you do, make sure the Use channel strings option, on the General page
is checked. If you do not need descriptive text, or you want to program more than
400 frequencies, then uncheck this option. With the option checked you may
program up to 400 frequencies; when unchecked you may program up to 760
frequencies. You should always set the Use channel strings options before you
start to enter frequencies onto the Frequencies page.
You may enter new values for the other options on the General page now, or after
you have entered details of the frequencies you wish to use.
Your mobile has an optional power saving feature, Display blanking. This works by
hiding the frequency display when you are not using the mobile. To enable this
option, check Display blanking. You should also enter a Display blanking time.
Any number between 10 and 300 seconds is allowed. If you do not use your mobile
for this period of time then the display will blank. Note that the display is never
blanked whilst your mobile is scanning.
You may program your mobile to produce warning sounds by checking the Warning
beeps option. You will then hear warning sounds if a mobile fault occurs or if you
attempt to transmit on an inhibited frequency. Transmit inhibit options are described
in more detail later.
The Hold in scan mode option alters the way in which your mobile scans for busy
frequencies. If Hold in scan mode is not checked then your mobile with pause on
busy frequencies for six seconds, then start scanning again. If Hold in scan mode
is checked then your mobile will stay on a busy frequency until the CH é button is
pressed to restart scanning.
The Busy on time option also alters the way in which your mobile scans for busy
frequencies. In scan mode, your mobile will pause or hold on a frequency only if it
appears to be busy for at least the Busy on time. Set Busy on time to lower values
for faster scanning. Set it to higher values to make scanning less sensitive to
unwanted noise. You may find that your mobile tends to scan to noisy channels that
are not really busy. If this problem cannot be cured by increasing the squelch
threshold then increase the Busy on time.
Check the Key beeps option if you want your mobile to beep whenever a key is
pressed.
Warning beep volume controls the volume of warning sounds and key beeps. It
does not affect the volume of received signals. If warning sounds and key beeps are
disabled then this option has no effect.
If you check the Offset channels option then your mobile will automatically lock to
the strongest signal if it detects two or more transmitters operating on the same
frequency.
Use the Max transmit time option to limit the maximum continuous transmit time. If
you set this option to 0 then you may transmit indefinitely. If you set it to any other
value then your mobile will stop transmitting after the specified time. If you limit
transmit time and enable warning beeps then you will hear warning sounds 10
seconds before the mobile stops transmitting and again when transmitting stops.
PAGE 5-10
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
OPERATION
You may want to store a short Personality description in the mobile. For example,
if you save your mobile’s personality as a file, then it might be useful to put the file
name here.
On the Frequencies page, you will see a single default entry. If you want your
mobile to be able to operate on the default frequency shown, than leave the
frequency value as it is, otherwise alter it to a frequency that you do require.
Enter frequencies in ICAO format, which specifies both the operating frequency and
bandwidth. There is no need to enter a bandwidth as the programmer determines
the bandwidth from the entered frequency.
If you want the frequency to be included in the list of priority frequencies then enter
Yes in the Priority column. You need only press Y or N. Up to 15 frequencies may
be marked as priority frequencies.
If you want the frequency to be a member of a scan group then enter the scan group
number in the scan group column. If you want the frequency to be in more than one
scan group then separate the scan group numbers with commas.
There are 15 scan groups, numbered 1 to 15. You may put up to 15 frequencies in
each group.
The Tx Inhibit column determines when a mobile may transmit. If inhibit is set to
Never, by entering N in this column, then transmit is always allowed. This allows you
to transmit on this frequency even if it is busy.
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OPERATION
If Tx Inhibit is set to Always, by entering A, then you will never be able to transmit
on this frequency.
If Tx Inhibit is set to Busy, by entering B, then you will not be able to transmit on this
frequency whilst it is busy, but you will be able to transmit when it is not.
If you have checked the channel string option then you may enter a short description
of the frequency in the Identity column. This is optional.
To add another frequency to the list, use the Add channel button.
To remove a frequency from the list, first select the frequency to be removed, then
use the Delete channel button.
To help you enter a large number of frequencies quickly you may use the Fill table
button. This opens a new window that allows you to add a range of frequencies to
the frequency table.
Enter the lowest required frequency in the First frequency box and the highest
required frequency in the Last frequency box.
Use the Channel bandwidth selector to determine the bandwidth of the frequencies
to be added. If 25kHz is selected then all the frequencies between the first and last
frequency will be added using 25kHz channel spacing. When 8.3kHz is selected
then only 8.3kHz frequencies will be added. The Both option allows all frequencies
of both bandwidths to be added.
Use the Transmit Inhibit selector to specify the default Tx inhibit option for the new
frequencies. Click the Add channels button to add the frequencies to the table.
You may edit the options for a frequency at any time.
If you have programmed a large number of frequencies then use the Find channel
button to find quickly a frequency in the frequency table. Enter the frequency you are
looking for, then click Find it.
PAGE 5-12
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OPERATION
When you have finished entering frequencies, click the Verify and sort the table button.
This checks that everything you have entered is allowed, and sorts the frequencies into
ascending order. You may omit this step as it is done automatically whenever you try to
program a mobile, save a personality or generate a personality report file.
5.8.4
Saving a personality
To save a new personality select File | Save as from the menu. The programmer
automatically verifies that everything you are trying to save is valid. If it is not then
you will see an error message. If you see an error message, correct the error before
selecting File | Save as again.
When the Save as window appears, enter a name for the personality, or select an
existing name. The programmer requires that personality files have a .per extension,
and will not allow you to save a personality with any other extension. When you have
selected or entered a name, click Save to save the personality.
If the save is successful the file name appears at the top of the programmer window.
If you now edit the personality you can save it under the same name by selecting the
File | Save option.
5.8.5
Recovering a saved personality
Select File | Open from the main menu. Select one of the files displayed, then click
Open.
5.8.6
Programming a personality into a mobile
Connect the programming lead to one of your PC’s serial ports. You may use COM1
or COM2.
On the programmer’s General page select the COM port that you want to use.
Unplug the microphone lead from the mobile. Connect the other end of the
programming lead into the mobile’s microphone socket, then switch on the mobile.
The mobile shows that it is in programming mode by displaying Pr.
N.B. If the mobile does not contain valid firmware then the display may show odd
symbols, rather than Pr. If this happens refer to the “Programming new firmware
into a mobile” section.
Select Program mobile | Personality from the main menu.
The programmer automatically verifies that everything you are trying to program is
valid. If it is not then you will see an error message. If you see an error message,
correct the error before selecting Program mobile | Personality again.
The progress of the programming operation is displayed on the status line at the
bottom of the programmer window. When programming is complete, switch off the
mobile and disconnect the programming lead.
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OPERATION
5.8.7
Reading the personality from a mobile
First connect the programming lead to one of your PC’s serial ports. You may use
COM1 or COM2.
On the programmer’s General page select the COM port that you want to use.
Connect the other end of the programming lead into the mobile’s microphone socket,
then switch on the mobile. The mobile shows that it is in programming mode by
displaying Pr.
Select Read mobile | Personality from the main menu.
The progress of the read operation is displayed on the status line at the bottom of the
programmer window.
If the read is successful then the mobile’s personality is displayed.
5.8.8
Printing a personality report
Select Report | Generate from the main menu. The programmer automatically
verifies that the current personality is valid. If it is not then you will see an error
message. If you see an error message, correct the error before selecting Report |
Generate again.
A textual representation of the personality will be displayed using Windows’ Notepad
program. You may use Notepad to print, or to save the personality report as a text
file. Before printing you might like to alter the displayed information, perhaps adding
information about the mobile or the date of the report.
When you close Notepad after generating a new report you will be asked if you wish
to keep the report. Select Yes to keep the report as a file or No to discard it.
You can open existing report files by selecting the Report | Open menu option.
5.8.9
Getting a mobile’s serial number and firmware version
First connect the programming lead to one of your PC’s serial ports. You may use
COM1 or COM2.
On the programmer’s General page select the COM port that you want to use.
Connect the other end of the programming lead into the mobile’s microphone socket,
then switch on the mobile. The mobile shows that it is in programming mode by
displaying Pr.
Select Read mobile | ESN from the main menu. After a few seconds a pop-up
window displays the mobile’s ESN.
“ESN” is short for Electronic Serial Number. The first part of the number describes
the mobile’s type and firmware version. The second part is a serial number unique to
your mobile.
5.8.10
Programming new firmware into a mobile
WARNING!
PAGE 5-14
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
OPERATION
Use this option with care as programming a mobile with incorrect firmware
may leave it in an unusable or unusable state.
First connect the programming lead to one of your PC’s serial ports. You may use
COM1 or COM2.
On the programmer’s General page select the COM port that you want to use.
Connect the other end of the programming lead into the mobile’s microphone socket,
then switch on the mobile. The mobile shows that it is in programming mode by
displaying Pr.
N.B. If the mobile does not already contain valid firmware then the display may show
odd symbols, rather than Pr. This will not prevent you from programming new
firmware; just continue as if Pr was displayed.
Select Program mobile | Firmware from the main menu.
A file “Open” window appears. Firmware files are in Intel hex format, and will have a
.i00 extension. Select the required file then click Open.
The progress of the programming operation is displayed on the status line at the
bottom of the programmer window. When programming is complete, switch off the
mobile and disconnect the programming lead.
5.9 Test Mode
Test mode is used to adjust the mobile’s transmitted power output. The range of
adjustment is typically from six to twelve watts, although this may vary from mobile to
mobile.
To enter test mode switch on the mobile by pressing the power button. Without
releasing the power key, press first the SQL button, then the SCN button, and finally
the PRI. Then release the power button. The mobile displays “tESt” to indicate that
it is in test mode. After a few seconds the display changes to show the current power
level setting.
In test mode the mobile may operate on one of three predefined frequencies, i.e.
118MHz, 127.5Mhz or 136.975MHz. Use the SQL button to select one of these
frequencies for operation at 25kHz bandwidth. Use the PRI button to select one of
these frequencies for operation at 8.33kHz bandwidth. The select frequency is
displayed in ICAO format. It is recommended that the output power is adjusted at
127.5Mhz, selected with the SQL button.
Transmit and receive operation in test mode is similar to normal operation, except
that squelch is always off in test mode. The volume keys may be used to adjust the
volume of received signals. The SCN key has no purpose in test mode.
Adjust the transmitted power level with the CH and SEL keys. The CH keys alter the
setting one step at a time, whilst the SEL keys change it in steps of ten. The range of
adjustment is from 1 to 240 inclusive.
Alter the power level setting whilst the mobile is receiving, then press the microphone
PTT button to observe the result. The mobile should be adjusted to achieve 8 watts
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OPERATION
transmitting.
The transmit LED lights whilst the mobile is transmitting. If there is a transmitter
problem then the mobile stops transmitting and the red LED is extinguished. Note
that transmit fault codes are not displayed in test mode.
To switch off without saving the new setting, press and release the power key. The
display then shows “nS” and the speaker sounds a single, long tone.
To save the new setting, press and hold the power button. With the power button
depressed, press PRI, then SCN, then SQL. When the new setting is saved, the
display shows “S” and the speaker sounds two short pips. If the key sequence is
incorrect then the display shows “nS” and the speaker sounds a single, longer tone to
indicate that the new setting has not been saved.
PAGE 5-16
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PERFORMANCE TESTING
6 Section Index
6.1
6.2
6.3
6.4
6.5
6.6
Introduction ................................................................................................. 6-2
Test Equipment ........................................................................................... 6-2
Power Supply .............................................................................................. 6-2
Transmitter .................................................................................................. 6-2
Receiver ...................................................................................................... 6-3
TX Power Adjust.......................................................................................... 6-3
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
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PERFORMANCE TESTING
6.1
Introduction
The following sections detail basic field testing requirements of the mobile to confirm
correct RF operation. These tests should be performed on a low, a middle and a
high channel to ensure that the RF performance is consistent across the mobile’s
entire range. Whilst these tests do serve to indicate the nominal RF performance,
there are relatively few adjustments available to field personnel, so mobile’s failing to
meet these basic tests should be returned to the supplier for correct repair or
retuning.
6.2
Test Equipment
The tests require the following equipment:
♦
♦
♦
♦
♦
Bench Power Supply
Digital Multimeter
RF Power Meter
Oscilloscope
RF Signal Generator
Ensure that the range measurement capabilities of each item is appropriate for the
mobile under test. Suitable alternatives, such as a comprehensive RF test set, may
be substituted where available.
6.3
Power Supply
For this test and all others, ensure that the mobile is connected to a nominal 13.2V
DC supply.
1. With the mobile configured to operate normally, check that the mobile
draws <100mA when it is switched off.
2. Turn the mobile on and check that the mobile draws <2A when in normal
standby mode (receive mode, muted).
6.4
Transmitter
1. Place the mobile into test mode (for details of test mode operation, please
refer to Section 5.9).
2. Key up the mobile and, with no modulation applied, check the following:
Page 6-2
I.
Current draw is <6.2A
II.
Transmit power is >7W and <10W
III.
Transmitter frequency is within 1.0ppm
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
PERFORMANCE TESTING
3. Apply an audio signal tone of 1 KHz at 35mV peak to pin 3 of the mobile’s
mic connector (ground on pin 5) and key up the transmitter. Check the
following:
IV.
Current draw is <6.2A
V.
Transmit power is >7W and <10 W average
VI.
Carrier modulated to >85%
4. Increase the 1KHz tone level by 20dB. Check that:
VII.
6.5
Receiver
1.
2.
3.
4.
6.6
Carrier is now modulated to <95%
Take the mobile out of test mode and apply an RF signal to the mobile
on an appropriate frequency, modulate it with a 1 KHz tone to 30%
and set the Mobile’s squelch threshold to 2. Adjust the RF level so
that the squelch is muted.
Increase the RF level until the squelch just unmutes and check that
the SINAD figure is >12dB.
Increase the mobile’s volume to produce an audio output level of 4W.
Check that the distortion figure is <5% for 30% modulation and is
<10% for 90% modulation.
Check that the current drawn is 2A
TX Power Adjust
To adjust the TX Power, please refer to Section 5.9.
T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0
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