Microphone is plugged to
the jack, which is in the
handset's connector
Microphone
Telefax
Home telephone
Modem ja PC
PABX
Loudspeaker
TDM-10E2_fm5.fm
Car radio mute
External alarm
+ Car battery
(+12 VDC)
GND
IGS
1
1.0.2 Benefon Forte and Fax
Product: TDM-20-N (Forte i) /
28.1.1999
+12 V
GND
TDM-10E2_fm5.fm
IGS
AL
MUTE
2
1.0.3 Benefon Forte and PC
Product: TDM-20-N (Forte i) /
28.1.1999
+12 V
GND
IGS
AL
MUTE
TDM-10E2_fm5.fm
3
Product: TDM-20-N / Installation Instructions
28.1.1999
2.0 INSTALLATION INSTRUCTIONS
Installation Instructions
PROLOGUE
These installation instructions have been prepared to assist fitters in installing the
equipment, and are as s uch o nl y to ser ve a s a g ui de . Nothing beats comm on se nse
and good experience.
Installation is always based on the need of the customer to use the phone in the
environment in which it will be installed. Nego tiate with the customer where the different parts will be installed. It is important that the customer tells of his own preferences and choices, and that th e fitter/sale sman tells whe re it is possible /advisable to
locate different items.
It is the salesman’s responsibility to see that the installation order is properly filled
out.
RECOMMEND
- antenna location on the roof
- handset location does not interfere with road safety
- speaker located in the driver’s side leg-room
- microphone as close as possible to the driver’s mouth
Alarm signals settings for frequenct, level (either increasing or fixed), cycle and
tone (menu).
2.0.2 Car Installation kit
NumberDescription
1MUTE
2IGS
3GND
4AL
5SPKR
2.0.3 Transceiver Unit Installation
The mounting bracket can be installed in e.g. trunk.
TDM-10E6_fm5.fm
3
Product: TDM-20-N / Installation Instructions
28.1.1999
2.0.3.1 Positioning the Mounting Bracket
Should the telephone be requied also for indoor use, or in another vehicle, it is recommended to install the transceiver unit in an easily accessible place.
2.0.3.2 Locking the Connector
The antenna, system cable, and combined power/accessiry connector are fixed.
TDM-10E6_fm5.fm
4
2.0.4 Handset Installation
The handset should be mounted to allow easy use and ensure safe operation
Product: TDM-20-N / Installation Instructions
28.1.1999
BENEF N
2.0.4.1 Holder Installation
2.0.4.2 Mounting the Handset Holder-Base
Screw the handset holder-base in place, and snap the holder into position by
twisting it carefully clockwise.
TDM-10E6_fm5.fm
5
2.0.4.3 Removal of the holder
The holder can be removed by carefully pressing the locking-tab (back, left)
and carefully turning the holder counter-clockwise.
Product: TDM-20-N / Installation Instructions
28.1.1999
2.0.5 Speaker Installation
For Hands Free operation, the best place to mount the speaker is on the dirver’s
side of the dashboard, p ointing direct ly towards the dri ver . The sp eaker is connecte d
with the connecting cable.
2.0.6 Microphone Installation
The following points should be noted when installing the microphone:
- the microphone must not be directed at the speaker
TDM-10E6_fm5.fm
- it is not recommended to mount the microphone on a sun-blind, because the
microphone di rection will change with movement of the sun-blind
- the microphone must not be in the driver’s line of vision, where it could be
distracting
6
Product: TDM-20-N / Installation Instructions
28.1.1999
- maximum range from driver’s mouth - about 20 cm
- the microphone is connected to the handset with a jack-plug
- it is not recommended to mount the speaker on a door-pillar or similar location
due to the high background noise at the side of vehicle
2.0.7 Voice-Controlled HF Installation
To ensure trouble-free HF operation, be sure to mount the speaker and microphone
carefully, as descriped on the previous page.
2.0.7.1 HF Tuning
With installation complete, connect loccal-box to both the handset spiral cable
and the handset system cable, and set telephone to local mode; press 1# and
start the vehicle; check the reading on the display for different revs, and press
OK twice when it is at its greatest.
Best results are obtained when HF tuning can be accomplished with the
vehicle moving at normal speeds.
Default value on display is 34, and the final value is 34 + compensation value.
In practice 40...55, depending on th e vehicle.
2.0.8 Mounting the Cables
There are two cables coming from the radio module: power and system cable.
The red supply cable connected to the battery.
With a 24 V supply, a voltage regulator must be used.
The black ground cable should be connected to a sufficiently firm place near the
radio module .
TDM-10E6_fm5.fm
7
Product: TDM-20-N / Installation Instructions
28.1.1999
2.0.8.1 Power Connector
Includes SPKR, GND, IGS, AL and MUTE connections.
NumberDescription
1MUTE
2IGS
3GND
4AL
5SPKR
6+12v
2.0.8.2 System Connector (Same Pinning in the System Cable)
The most recommended antenna location is on the car roof.
+ highest location
+ circular radiat io n trace
+ no shadows
+ good grounding
2.0.9.2 On Car Wing
Product: TDM-20-N / Installation Instructions
28.1.1999
+ easy to mount
- irregular grounding
- car body creates shadows
2.0.9.3 On Boot Lid
Not recommended under any circumstances
- causes constant duplex-interference
2.0.9.4 On Vehicle Window
+ no holes in the bodywork
- does not work as well as body mounting
- expensive
TDM-10E6_fm5.fm
9
2.0.10 Connections
2.0.10.1 Power timer
IGS power timer is connected to t he veh icle ele ctrical syste m so tha t p ower on
is VB and power off is OV, figure 1.
1MUTE
2IGS
3GNDCaution!
4AL
5SPKR
6+VB
NOTE!
Product: TDM-20-N / Installation Instructions
28.1.1999
The same numbering is used
with the power cable
IGS connection must not be made to the ignition system.
2.0.10.2 Car Radio Muting
MUTE car radio muting is connected with a connecting cable to the relay pins.
RELAY
86
87A
85
30
+ACC
VBATT
Car radio supply voltage
Voltage from car battey
30
85
RELAY
87A
86
car radio
MUTE
(EXTVB connector pin1 incarbox)
TDM-10E6_fm5.fm
10
2.0.10.3 Additional Alarm
AL alarm system is connected with a 4-ply connector to either a relay or an
extension. Alarm on/off is set by the handset menu.
RELAY
86
87A
85
30
Product: TDM-20-N / Installation Instructions
28.1.1999
RELAY
VBATT
AL
(EXTVB connector pin4 in carbox)
30
85
86
2.0.11 Identity Programming
Connect a local-box with programming rights between the handset and the radio
module; turn power on, and press 0#, and LOCAL will be shown on the display.
2.0.11.1 Subscriber Number Programming
Press 2#, and Z X1 X2 X3 X4 X5 X6 Y1 Y2 Y3, and finally OK
Z = country code X1...X6 = 6-digit subscriber number
Y1... Y3 = 3.digit password
Check:
87
HORN
Press 2*, in case of error, and start subscriber-number programming again.
2.0.12 Combination Lock Programming
Press 3#, and X1 X2 X3 X4, and finally OK
X1...X4 = customer-defined combination
Check:
Press 3*, in case of error, and start combination lock programming again.
TDM-10E6_fm5.fm
11
2.0.12.1 Sales Date Programming
Press 4#, and XX XX XX, and finally OK
XX XX XX = d mm yy, for example 08 0
Check:
Press 4*, in case of error, and start sales date programming again.
2.0.13 Test Local Commands
CommandFunction
0#Transfer to LOCAL mode
1#HF tuning OK adju stment OK end
2#Subscriber number programming, and OK
2*Check subscriber number
3#Combination lock programming (4 digits) and OK
3*Check combination lock
4#Sales date programming (6 digits) and OK
4*Check sales date
5#
6#Additional Alarm on
6*Additional alarm OF F
7#Car radi o mu te ON
7*Car radio mute OFF
8#Reads IGN, HOOK, PTT, and AUTOCALL lines
9#Transfer shortcodes to LOCAL-BOX
999*Transfer shortcodes back to radio module
Change call country. Call country on the display enter new call coun with +/- buttons, store with OK
Product: TDM-20-N / Installation Instructions
28.1.1999
TDM-10E6_fm5.fm
12
3.0 OWNER’S MANUAL
1user_gb.fm1
Product: TDM-20-N /
28.1.1999
4.0 LOCAL SERVICE COMMANDS
4.0.1 General
There is a special program module called LOCAL which makes it possible to set,
read and program various features of the phone.
In order to activate the LOCAL program it is necessary to connect a local box
between the radio unit and the handset. When the power is switched on, and the
local box is connected, the LOCAL program becomes activated.
There are two kinds of local boxes. One merely has "service rights", i.e. you cannot
program subscriber number. The other has "full rights", i.e. there are no restrictions
in LOCAL.
4.0.2 Special Push Buttons In Local
ButtonAction
RChanges between LOCAL and NMT program
HFChanges between earphone and speaker
-HF-led indicates speaker mode-
SND/ENDEnds local command influence
MFT
+/-Volume settings
Used for scrolling letters A, b, C, D, E, F (accepts
either with OK or digit button)
0RAM fail
1EPROM fail
2EEPROM fail
3COP fail (not used)
4No RSSI in conversation
5Transmitter ON during scan
8
Product: TDM-20-N /
28.1.1999
6No Handset
7FSK detected in conversat i on
60*Reset all power off counters
61#Read sellercode
62#Read program version (ddmmyy)
70#Tune FSK split level
- store with OK key
70*Read FSK split level
71#Base-band programming
71*Read Base-band
TDM-10E3_fm5.fm
9
4.0.4.8 Clearing Of Memory 8X
80#Clear RAM
81#Clear EEPROM
- not the tuned values
810#Clear whole EEPROM
Product: TDM-20-N /
28.1.1999
82#
4.0.4.9 Burn-in 9X
98#Start BURN-IN if enabled
98*Stop BURN-IN if IGN not connected
99#Enable BURN-IN
99*Disable BURN-IN
100#SIM using normal S AK number
- defaul value always when phone is ON
100*SIM using test SAK number
Clear RAM and EEPROM
-not the tuned values
TDM-10E3_fm5.fm
10
Product: TDM-20-N /
28.1.1999
4.0.5 Guide Texts And Error Situations
After switching power the display shows LOCA L. Along with a lo cal command, a
guide text always appear s, explainin g the given command.
The following list shows the most common error situations.
ERROR on the display:
1. Error in local command
2. Failed EEPROM programming
3. Wrong input data to EEPROM
- Length of data
- Erroneus digits
- RSSI-levels or deviation limit levels are
not in propersuccession
4. Loop test has failed
5. BURN-IN test cannot be activated when
not enabled
UNKNOW on the display:
LOCAL on the display though
there is no local box:
Unknown local command
BURN-IN test is enabled or subscriber
number is not programmed.
TDM-10E3_fm5.fm
11
4.0.6 Local-Box
4.0.6.1 General
LOCAL = operating mode where it‘s possible to give commands to set, read and
program the MS features.
To get the MS to LOCAL a local-boxes, one merely has "service rights" i.e. you cannot program subscriber number. The other has "full rights", i.e. there are no restictions in LOCAL.
Each box has it‘s own serial number. Serial number and programming rights are
installed by manufacturer. Serial number is used for identifying the subscriber number programmer and it is stored automatically to MS during programming.
There is text LOCAL on the display when the local box is connected and power is
switched on.
Product: TDM-20-N /
28.1.1999
4.0.6.2 Features Of Local-box
Switching ON/OFF th e power supply:
- Set NORMAL/SERVICE switch NORMAL position
To be measured from audio of the radio unit:
- Set NORMAL/SERVICE switch SERVICE position and RADIO/HANDSET
switch RADIO position.
GEN:-norm dev = 1 Vrms
METER:- norm dev = 300 mVrms
SERVICE/HANDSET- max dev = 600 mVrms
To measure handset audios:
- Set NORMAL/SERVICE switch NORMAL position and RADIO/HANDSET
switch HANDSET positon
BNC-connectors:
GEN:-norm dev = 300 mVrms
METER:
- max dev = 3.33 Vrms
(VOL = 0dB)
- max dev = 600 mVrms
4.0.6.3 Internal Ram
Local-box‘s internal RAM is intended for not losing the contents of shortcode memory during service operations.
Commands9#store shortcode memory to loca l-box
TDM-10E3_fm5.fm
999*store shortcode memory to MS.
12
Product: TDM-20-N /
28.1.1999
5.0 TUNING INSTRUCTIONS
5.0.1 Connect To Phone
- operating voltage (13.2V, X800 connector, loudspeaker needed)
- local-box (between handset and radio unit)
- RF-generator/power-meter
5.0.2 Synthesizer
Check-up of operating voltages
Input-connector V401 pin113.2 V
TP18.6...9.4 V
TP24.5...5.3 V
TP713...15 V
+ TX on (local 34#)8.5...9.3 V TP3
+ TX off (local 34*)approx 5 V TP3
5.0.3 RX-VCO
Switch synthesizer to first channel (local 35#)
Measure voltage synthesizer unit TP6, adjust voltage C435( RX-VCO) to 3 V
Change to last channel (local 37#)
Check that the adjusting voltage is approx 6 V
5.0.4 TX-VCO
Start TX-VCO (local 34#)
Switch synthesizer to first channel (local 35#)
Measure TP4 voltage, adjust voltage by C498 (TX-VCO) to 5 V
Change to last channel (local 37#)
Check that the adjusting voltage is now approx 7.5...8.5 V
TDM-20E5_fm5.fm
1
Product: TDM-20-N /
28.1.1999
5.0.5 Channel Frequency Adjustment
Start transmitter (local 33#)
Change to first channel (local 35#)
Adjust channel frequency MHz (+/-100 Hz) with TCXO trimmer
5.0.6 Transmitter
Set operating voltage to 15.6 V
Switch on transmitter (local 33#)
Adjust audio/pros unit R162 (TX-POW) transmitter power to 41.8 dBm
Set operating voltage to 10.8 V, check the transmitter power.
Difference max +/-1.5 dB
Check 32# 31.8 dBm
Check 31# 21.8 dBm
5.0.7 TX-Audio
Feed 1 kHz, 1 V RMS signal to local box GEN-connector.
Switch on TX-audio , mic off (local 21#, 29*).
Measure the processor unit x-synte connector pin 2 , and adjust (maximum) level of
R241 to 550 mV RMS.
Switch transmitter to medium power, center channel (local 32#, 36#).
Adjust R459 (syntyhesizer-module) deviation to 3 kHz.
Check the deviation in channels (1, 180); difference must not exceed 150 Hz.
Change TX-VCO adjusting voltage if necessary (range in use approx 3...10 V).
Adjust R459 (MOD) again.
Drop the af.gen level until deviation is 1 kHz, measure V401 pin 2 in synthesizer,
write down the level.
Change af.gen frequency to 300 Hz.
Raise the af.gen l evel until V40 1 pin 2 leve l is equal to the refere nce level menti oned
before.
Adjust R457 deviation (with COMP.OS-module) to 1 kHz.
TDM-20E5_fm5.fm
2
5.0.8 Max DEV
Feed pt.gen frquency 1 kHz, 3.33 Vrms.
Check deviation in channels (1, 90, 180).
Deviation must be within the limits 4.0...4.5 kHz; if it exceeds 4.5 kHz, adjust R244
(with MAX OA-mod ule). Reset (local 0#)
5.0.9 FFSKT
Switch on medium power (local 32#).
Switch on FFSKT (local 12#).
Adjust R265 deviation (FFSKT) to 4.2 kHz.
Reset (local 0#).
Product: TDM-20-N /
28.1.1999
5.0.10 RX-Audio
Set RF-generator frequ ency 465.225 MHz, level -57 dBm, mod freq 1 kHz, deviation
3 KHz.
Set channel 90 (local 36#, 22#).
Expander ON (local 200#).
Adjus LF output level R302 (RX) 300 mV RMS, measure at METER-connector
(local-box)
Reset (local 0#).
5.0.11 RX-Response
Set RF-generator values as above, except for level -113 dBm.
Switch on high-power, RXA on (local 33#, 22#)
Measure SINAD CC ITT min. 20 dB.
Also check channels (1, 180).
RF-generator frequenc y 463.000 MHz (35#)
467.475 MHz (37#)
5.0.12 RX-Distortion
Set center channel, high-power (local 36#, 33#).
RF-generator frequency 465.225 MHz, level -57 dBm.
Measure distortion, max 5 %.
Reset by 0#.
TDM-20E5_fm5.fm
3
5.0.13 TX-Distortion
Set center channel high-power, TXA on, mic off (local 36#, 33#, 21#, 29*).
Feed 1 kHz, 1 V RMS signal to local-box GEN-connector.
Measure distortion, max 5 %
Reset (local 0#).
5.0.14 FII DEV
Set RF-generator frequency 465.225 MHz, level -57 dBm, modulation frequency 4
kHz, dev 300 Hz.
Switch on fiiloop (local 23#), power (32#).
Adjust R255 deviation to 300 Hz.
Reset (local 0#).
Product: TDM-20-N /
28.1.1999
5.0.15 Tuning The RSSI-Levels
Set RF-generator frequency 465.225 MHz, level -53 dBm.
Switch on RSSI tuning (local 38#).
Display shows "PG-53".
Wait until reading on the display settles down. Press OK.
Change RF-level to -63 dBm.
Phone display shows "PG-63"
Press OK.
Change RF-level to -93 dBm.
Phone display shows "PG-93
Press OK.
Change RF-level to -103 dBm.
Phone display shows "PG-103
Press OK.
TDM-20E5_fm5.fm
4
Change RF-level to -115 dBm.
Phone display shows "PG-115
Press OK.
Check tuning (local 38*).
5.0.16 Tuning FSK-split level
RF-generator setting s
Freq. 465.225 MHz, level -53 dBm ,mod freq 1 kHz, dev 350 Hz
Give local-command 70#. Handset display show value 20...30.
Product: TDM-20-N /
28.1.1999
Stor e value by pressin g OK button.
5.0.17 Program Base-Band (if neccessery)
Give local command 71#. Press 1 and OK
Press 180 and OK.
5.0.18 Programming The Subscriber Number
Requires local-box with programming rights.
Give local-command 2#.
Feed 10 digits, and press OK (country code + subcriber number + password)
Check 2*.
TDM-20E5_fm5.fm
5
Product: TDM-20-N / OT0001 Transmitter
28.1.1999
6.0 TRANSMITTER MODULE OT0001
SPECIFICATIONS:
OT0001 Transmitter
Operating voltage 10.8...15.6 VDC
Current consumption max 4.5 A
Input power level 10 dBm (+2/-2 dB)
Output power level max 44 dBm (25 W) without a duplex filter
Frequency range 453.000...457.475 MHz
6.0.1 Connector Description:
4-pole connector:
pin 1, voltage from directional coupler max 10 V
pin 2, control voltage for RF-power max 8 V
pin 3, bias for the preamplifiers 8 V
pin 4, GND
6.0.1.1 Transmitter operation:
The transmitter is a 5-stage amplifier chain. The two preamplifiers (Q600/601) operate in class AB as linear amplifiers. The final amplifier (I600) is a class C power module. The output power is controlled with a loop: A signal coming from the directional
coupler is rectified and filtered. Then it is fed through processor controlled voltage
attenuator to the integrator, which has a preset reference voltage (a corresponding
value for 15 W output power). Th e control voltage from the integrator is amplified in
DC-amplifier (Q610/611) and fed to the preamplifiers/the first stage of the power
module. RF-power input has a 6 dB attenuator to improve impedance matching
between synthesizer and transmitter in different power level conditions.
6.0.2 Tuning Instructions:
Tuning can be done in local mode or using CMT-tester.
Set a power supply to 15.6 V.
Input signal 10 dBm (10 mW) on channel 090 from the synthesizer or signal genera-
tor.
Connect a 50 ohm dummy load and a power meter to the antenna connector.
Transmitter on (33#).
Tune output power with trimmer R162 on OA0014 (audio/processor) -module to
41.8 dBm (15 W).
XT0001E4_fm5.fm
1
Product: TDM-20-N / OT0001 Transmitter
28.1.1999
Set a power supply to 10.8 V and check output power. It should be about the same
value as set be fore (+/-1.5 dB).
Set a power supply to 13.2 V.
Check power levels:
High 41.8 dBm (15 W) +/-1.5 dB (33#)
Medium 31.8 dBm (1.5 W) +/-3 dB (32#)
Low 21.8 dBm (0.15 W) +/-3 dB (31#)
Power off (31*)
Tuning is completed.
Some useful local mode commands for the transmitter operation checking:
Channel00135#
high power on/off33#/33*
medium power on/
off
low power on/of f31#/31*
6.0.3 Test Point Voltages
Set the power supply to 13.2 V
Typical DC-values measured with a universal meter R i = 10 Mohm (Philips PM
The receiver RF-signal is brought through the du plex filter NBF40001 to th e amplifier
stage Q701. The amplifier signal is led the dual balanced mixer X701 through the
band filter L703.
The upper injection fre qu en cy i s br ou gh t fr om th e syn the si zer un i t to the LO input of
the mixer through a small resistance attenuator. The IF (intermediate frequency)
21.4 MHz gained in this way is amplified and led through crystal filters X702 and
X703 to the FM IF-system IC-circuit (SA605D). The circuit includes another local
oscillator, and another mixer.
DC-voltage comparable to fi eld strength
(0.5...5 V)
(f.mod 1 kHz dev. 3 kHz)
The second IF is 455 kHz: there is f i rst a 6-pole ceramic filter, and another 4-pole filter in the limiter amplifier chain.
The temperature compensation for the AF-signal i nd icated ha s bee n i nclu ded i n the
buffer amplifier stag e I702/B.
XR0002E4_fm5.fm
1
Product: TDM-20-N / OR0002 Receiver
28.1.1999
The temperature compensation for the RSSI signal has been made with the diode
pai D701, which is followed by the buffer amplifier I702/A.
The receiver unit gets +9 V regulated operating voltage from the current input unit
OW0001 through the audio/processor unit.
The operating voltage is dropped with the transistor Q703 to the lower required by
the IF circuit.
7.1 Receiver OR0002 settings
7.1.1 Supply Voltages
A regulated +9 V power supply is fed to the module via connector V701 pin 1.
The intermediate frequen cy module uses a ca. +6 V supply wh ich can be checked at
the solder joint of condenser C727 located on top of the board.
7.1.2 Setting Order:
1. Detector coil V707
2. Crystal filter matching coils L705, L706
3. Helical bandpass filter
1. Adjustment of detector coil L707 is not dependant on the channel used.
Feed a -13 dBm RF-signal to the aerial connector.
Enable RX audio (local 22#).
Connect the local box meter connector to an oscilloscope or AC voltmeter (1 V
range).
Adjust coil L707 to maximum value.
NOTE:
(Changing the receiver may cause difference at audio levels. When changing the
module, the audio unit RX adjustment should also be checked. If the RX adjustment
has been changed, then the FII-devia ti on must also be checke d. )
2. Adjustment of the crystal filter matching coils L705 and L706 is not dependant on
the channel u sed.
XR0002E4_fm5.fm
Feed a -13 dBm modulated RF-signal to the aerial connector.
Enable RX audio (local 22#).
Connect the local box meter connector to a SINAD meter.
Trim coils L705 and L706 for maximum value on the SINAD meter and repeat
the adjustment (35...50 dB SINAD psoph.).
2
Product: TDM-20-N / OR0002 Receiver
28.1.1999
The effect of these coils can be seen even more clearly if the SINAD meter is connected direct to the RX audio output connector V701 pin 3. This simplifies their
adjustment.
3. Helical bandpass filter
This adjustment inf l unces spurious res ponse rejection and tuning must be done
carefully using suitable plastic screwdriver, which does not disturb tuning.
Switch on the first channel (local 35#)
Feed to the antenna c onnector RF-signal at level -93 dBm (463.000 MHz)
Connect DC-voltmeter (analog display) 3 V max connector V701 pin 2 RSSI
Adjust voltmeter to maximum with helix core nearest to the duplexfilter
Change receiver on the highest channel (local 37#) (467.475 MHz)
Adjust voltmeter to maximum value with the other core of the helix
Change back to the first channel
Adjust voltmeter again carefully to maximum value
7.1.3 Check Sensitivities
ChannelRF-inputSINAD psoph.
001-113 dBm26...27 dB
180-113 dBm26...29 dB (typical values)
XR0002E4_fm5.fm
3
Product: TDM-20-N / OR0002 Receiver
28.1.1999
7.1.4 Parts list
CODEPARTDESCRIPT.VALUEMANUF.TYPE
CC0101C701 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0471C702 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0471C703 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CD0100C704 SMD capasitor 10 pF/0.25pF 50 V NP0 Philips
CC0100C705 SMD capasitor 10 pF 5% 50V NP0 Philips
CC0150C706 SMD capasitor 15 pF 5% 50V NP0 Philips
CC0101C707 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0220C708 SMD capasitor 22 pF 5% 50V NP0 Philips
CC0103C709 SMD capasitor 10 nF 10% 50V X7R Philips
CD0399C711 SMD capasitor 3.9pF 0.25 50V NP0 Philips
CC0220C712 SMD capasitor 22 pF 5% 50V NP0 Philips
CC0473C713 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0390C714 SMD capasitor 39pF 5% 50V NP0 Philips
CC0151C715 SMD capasitor 150 pF 5% 50V NP0 Philips
CC0473C716 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C717 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C718 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C719 SMD capasitor 47 nF 10% 50 V X7R P hilips
CD0100C721 SMD capasitor 10 pF/0.25pF 50 V NP0 Philips
CC0103C722 SMD capasitor 10 nF 10% 50V X7R Philips
CC0473C724 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C725 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C726 SMD capasitor 47 nF 10% 50 V X7R P hilips
CU0225C727 SMD tantal 2.2uF/16V 20% 4.7x2.6mm MatsushitaECST1CB 225R
CC0101C728 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0473C729 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0331C730 SMD capasitor 330 pF 5% 50 V NP0 P hilips
CC0101C731 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0331C732 SMD capasitor 330 pF 5% 50 V NP0 P hilips
DS0099D701 SMD diode 70 V 200 mA Philips BAV 99
IV6050I701 FM IF-system Philips SA605D
IA0272I702\2 x op.amp. LinCMOS Low noise,power Texas TLC27M2ID
LH0465L703\Helix filter 450 MHz Neosid 7.2E 00519630
LC0105L704 SMD inductor 1.0 uH Siemens B82412-A1102-M
LI0225L705 IF-coil 2.2uH Toko 5SPN-0225AG 5S
LI0225L706 IF-coil 2.2uH Toko 5SPN-0225AG 5S
LI0687L707 Quad coil 680uH Toko 7MC-A2549HM 7P
PR0002PCB PCB for OR0002 90.5 x 37 x 1.6 Pers torp
QAA093Q701 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
QF0310Q702 Transistor N-fet Siliconix SST 310
QSB848Q703 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
RC0472R701 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0103R702 SMD resistor 10 k 5% 0.125 W Kamaya
RC0103R703 SMD resistor 10 k 5% 0.125 W Kamaya
RC0221R704 SMD resistor 220 R 5% 0.125 W Kamaya
RC0100R705 SMD resistor 10 R 5% 0.125 W Kamaya
RC0120R706 SMD resistor 12 R 5% 0.125 W Kamaya
RC0391R707 SMD resistor 390 R 5% 0.125 W Kamaya
RC0471R711 SMD resistor 470 R 5% 0.125 W Kamaya
RC0222R712 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0101R713 SMD resistor 100 R 5% 0.125 W Kamaya
RC0682R714 SMD resistor 6.8 k 5% 0.125 W Kamaya
RC0223R715 SMD resistor 22 k 5% 0.125 W Kamaya
RC0223R716 SMD resistor 22 k 5% 0.125 W Kamaya
RC0472R717 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0471R718 SMD resistor 470 R 5% 0.125 W Kamaya
RC0152R719 SMD resistor 1.5 k 5% 0.125 W Kamaya
XR0002E4_fm5.fm
4
Product: TDM-20-N / OR0002 Receiver
28.1.1999
CODEPARTDESCRIPT.VALUEMANUF.TYPE
RC0473R720 SMD resistor 47 k 5% 0.125 W Kamaya
RC0473R721 SMD resistor 47 k 5% 0.125 W Kamaya
RTN223R722 SMD-NTC resistor 22k 10% Hokuriku
RC0273R723 SMD resistor 27 k 5% 0.125 W Kamaya
RC0103R724 SMD resistor 10 k 5% 0.125 W Kamaya
RC0104R725 SMD resistor 100 k 5% 0.125 W Kamaya
RC0474R726 SMD resistor 470 k 5% 0.125 W Kamaya
RC0473R727 SMD resistor 47 k 5% 0.125 W Kamaya
RC0102R728 SMD resistor 1 k 5% 0.125 W Kamaya
RC0153R729 SMD resistor 15 k 5% 0.125 W Kamaya
VN0104V701 4-pin connector Wisher WKP-N4B1G-L
VR0135V702 Coax connector 50 ohm TaikodenkiTMP-J02X-A1
XM0001X701 Dual bal. mixer 1-600 MHz M ini Circ.ASK-1-X65
XF4214X702 Crystal filter 4-pole monol 21.4MHz SUNNY-EMI
XF4214X703 Crystal filter 4-pole monol 21.4MHz SUNNY-EMI
X20945X704 Crystal 20.945MHz Telequarz HC-45/U-2L
XC6455X705 Ceramic filter 6-pole 455 kHz Kyocera KBF-455R-20A
XC0455X706 Ceramic Filter 4-pole 455 kHz Kyocera KBF-455P-20A
Last
update
14.08.91
XR0002E4_fm5.fm
5
Product: TDM-20-N / OR0002 Receiver
28.1.1999
Component Side Layout PR0002A0 (Schematic OR0002A1)
XR0002E4_fm5.fm
6
Product: TDM-20-N / OR0002 Receiver
28.1.1999
Solder Side Layout PR0002A0 (Schematic OR0002A1)
XR0002E4_fm5.fm
7
Product: TDM-20-N / OR0002 Receiver
28.1.1999
XR0002E4_fm5.fm
8
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
8.0 SYNTHESIZER MODULE OS0021
SPECIFICATIONS
OS0021 Synthesizer
8.0.1 Functions
This unit generates the high frequency signals for respective channel fr equencies:
this gives a modulated channel-frequency signal for the transmitter unit and upper
band injection frequency for the receiver unit.
The synthesizer is connected via connector V401 to the processor/audio unit.
Description of connector V401:
1VBoperating voltage to synthesizer13.2 V
2 TXAUDIOtx audio modulationnominal 550 mV RMS
3 GNDground(-)
4 SREenable pulse for rx synthesizer IC5 V
5 STEenable pulse for tx synthesizer IC5 V
6 SCLKclock for rx and tx data0/5 V
7 SDATArx and tx data for synthesizer IC0/5 V
8 TXVCOvoltage for tx vco. start-up5 V
V403
V402
TX-INJECTION MHz +10 dBm/50
ohm
RX-INJECTION MHz +10 dBm/50
ohm
8.0.2 Circuit Description
The module can be divided into three main units: TX-synthesizer, RX-synthesizer,
and common power supply unit for both synthesizers.
The power supply unit provides stabilized voltages +9 V (TP1) for the high-frequency
parts and +5 V (TP2) for the synthesizer and pre-scaler circuits and TCXO. The
active components Q401...Q405 are included in the power supply unit.
8.0.3 RX-Synthesizer
Receiver injection frequency is generated by a phase-locked loop (PLL). The coil of
the voltage-controlled oscillator is a strip line on the PCB. VCO center frequency is
adjusted with trimmer C436. Q411 is the oscillator transistor. Next, there are two
amplifier stages Q412 and Q413. The circuit is provided with a 3 dB atttenuator for
the outcoming signal , with a p art of this signal b eing fed to the pre- scaler I 4022. Th is
is called the dual modulus divider having scaling factors 128/129. The divided frequency is fed to the synthesizer circuit I401.
XS0001E4_fm5.fm
1
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
The synthesizer circuit I401 gets its control signals from the processor unit via connector V401 in serial form. Signal CLK is the clock-frequency for synchronising the
transmission of chann el- fre qu en cy da ta to the synthesiz er. The scaler information is
stored by a latch-pulse on SRE bus sent to the synthesizeer circuit.
The divided frequency i s comp ar ed to t he re ferenc e freque ncy with a phase comp ar ator. The exact reference frequency comes from the thermal-compensated crystal
CXO). This 12.8 MHz frequency is divided by a factor of 512 in the synthesizer circuit, giving the reference frequency of 25 kH z (= channel space).
The synthesizer is phase-locked when these two frequncies fed to the phase comparator are equa l. The phase comparator emits positive pulses in response to low
VCO frequency, and ground pulses for high VCO frequency. The phase comparator
output chargers and di schargers the cap acitor C417 thro ugh the resistor R4 22, while
R423 and paralled-co nnected capacitors C418/419 stabilizing the loop function.
The voltage fed to the above described capacitor is amplified with transistors Q408/
409. Two RC-loops R427/C422 and R428/C433 prevent the pulse transfer from the
phase comparator to the VCO. The filtered DC voltage alers, when needed, the
reversed voltage of the capacitance-diode D403 located in the oscillator circuit, i.e.
controls the VCO frequency (TP6).
8.0.4 TX-Synthesizer
TX-frequency is generated with a similar phase-locked loop to the above described
Rs-injection frequency.
There are after the VCO three buffer amplifiers Q416, Q417, and Q418. The divider
and synthesizer circuits function like the RX-synthesizer. There are common DATA
and CLK signals. The scaler information is stored by a latch-pulse on STE bus sent
to the synthesizer circuit I403.
TX-synthesizer uses the p hase com p ara tor outpu t s φ/R and φ/V . This is followed by
avtive low-pass filter for control filtering. The VCO control voltage range is widened
by raising the filter IC power supply with a voltage converter Q414 (TP7). This filtered control voltage is fed to the capacitance-dio de-cathode in the o scillator circuit.
An excessive VCO frequency prompts φ /V output-pulses from the phase comparator, but the φ /R output will stay in "1"-state. Too low VCO frequency prompts in turn
negative O/R output-pulses from the phase comparator, while the O/V output stays
in "1"-state.
Modulation is taken from the connector V401 pin 2 (TP5) via level control R459 to
the capacitan c ed io de an ode of the VCO circuit. With this arr an ge me nt t he l o op filter
does not affect the modulation by attenuating the high frequencies.
With low modulation frequencies (300...500 Hz), lin ear AF-response is ma intained
by feeding the loop with a "compensation modulation" through the integrator I405.
Compensation is adjusted with trimmer R457 so that the AF-response is linear at
300 Hz frequency.
XS0001E4_fm5.fm
2
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
8.1 Synthesizer OS0021 Settings
When measuring, a multimeter with Ri = 10 M ohm has been used.
AC-range 20 Hz...20 kHz.
+9 V, regulatedTP18.6...9.4 V
+5V, regulatedTP24.5...5.3 V
+14VTP713...15 V
+TX onTP3(local 34#)8.5...9.3 V
+TXoffTP3(local 34*)approx 5...7 V
Operating voltages require no adjustment.
+ 9 V accuracy is affected by the Zerner diod e V401 (5V6).
Accuracy of this diode is 5% in 0-series. It will be changed to 2% diode. The resis-
tors R408, R409 used for voltage settings have 1% tolerance.
The + 5 V voltage reference is also taken from this 5V6 diode.
8.1.2 RX-VCO Adjustment
Change to lowest channel (local 35#)
Measure voltage TP6, adjust voltage RX-VCO to 3 V with trimmer C436.
Change to highest channel (local 37#)
Check that adjustment voltage is now approx 6 V.
(Synthesizer functions are optimized with above VCO settings-accuracy, channel
delay, overlap, channel selectivity).
(VCO-accuracy = voltage differenc e between end ch annels)
8.1.3 TX-VCO Adjustment
Switch on TX VCO (local 34#) or transmitter (local 32#)
Change lowest channel (local 35#)
Measure TP4 voltag, and adjust TX-VCO voltage to 5 V with trimmer C498.
Change to highest channel (local 37#)
Check that operating voltage is now approx 7.5...8 V.
XS0001E4_fm5.fm
3
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
The operating voltage range has been raised to 13V . It may be necessary to deviate
from the above settings i n some production runs in orde r to ensure line ar modulati on
for end channels.In practice the operating voltage can be between 3V...10V.
8.1.4 Setting Channel Frequency:
8.1.4.1 Measuring Devices:
Frequency counter (resolution 10 Hz)
Switch TX on (local 32#)
Switch to lowest channel (local 35#)
Set correct channel frequency MHz with TCXO trimmer (+/-100 Hz)
8.1.5 Adjusting The Modulation:
Adjust the modulation alon g wIth the audio un it; see setting instr uctions for the au dio
unit, TX-AUDIO.
Set to middle channel (local 36#)
Switch TX on (local 32#) e.g. medium power.
Feed "normal" modulation to microphone input (f mod. 1 kHz 1 Vrms)
Switch microphone off (local 29*)
Switch TX-audio on (local 21#)
Check that TP5 voltage is now 550 mV rms.
Adjust deviation to +/-3 kHz peak with MOD-trimmer R459.
Check deviation of end channels, difference max +/-150 Hz or +/-0.5 dB
8.1.6 Correcting The Low-frequency Response:
Drop mic input level until deviation is +/-1 kHz.
Measure TP5 voltage (reference level).
Change modulation frequency to 300 Hz.
Raise mic input level until TP5 voltage increases to the same level as the reference
level.
Adjust deviation to +/-1 kHz with COMP-trimmer R457.
XS0001E4_fm5.fm
4
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
8.1.7 Parts list
CODEPARTDESCRIPT.VALUEMANUF.TYPE
CC0473C401 SMD capasitor 47 nF 10% 50 V X7R P hilips
CE0476C402 Al elko 47 uF/25 V 7x7mm Philips 2222 097 56479
CC0102C403 SMD capasitor 1 nF 5% 50V NP0 Philips
CU0105C404 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CE0476C405 Al elko 47 uF/25 V 7x7mm Philips 2222 097 56479
CU0105C407 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CC0102C408 SMD capasitor 1 nF 5% 50V NP0 Philips
CC0473C409 SMD capasitor 47 nF 10% 50 V X7R P hilips
CD0101C410 SMD capasitor 100 pF 5% 50 V NP0 P hilips
CC0101C411 SMD capasitor 100 pF 5% 50V NP0 Philips
CU0105C412 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CC0101C413 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0102C414 SMD capasitor 1 nF 5% 50V NP0 Philips
CC0102C415 SMD capasitor 1 nF 5% 50V NP0 Philips
CC0473C416 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0103C417 SMD capasitor 10 nF 10% 50V X7R Philips
CC0473C418 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C419 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0103C421 SMD capasitor 10 nF 10% 50V X7R Philips
CC0223C422 SMD capasitor 22 nF 10% 50 V X7R P hilips
CU0105C423 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CC0471C424 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CD0569C425 SMD capasitor 5.6 pF/0.25pF 50 V NP0 Philips
CD0100C426 SMD capasitor 10 pF/0.25pF 50 V NP0 Philips
CD0479C427 SMD capasitor 4.7 pF/0.25pF 50 V NP0 Philips
CC0473C428 SMD capasitor 47 nF 10% 50 V X7R P hilips
CD0279C431 SMD capasitor 2.7 pF/0.25pF 50 V NP0 Philips
CD0109C432 SMD capasitor 1 pF/0.25pF 50 V NP0 Philips
CC0103C433 SMD capasitor 10 nF 10% 50V X7R Philips
CD0689C434 SMD capasitor 6.8 pF/0.25pF 50 V NP0 Philips
CA0200C435 Trim.kond. 5/20 pF MatsushitaECRLA020E52V
CC0101C436 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0471C437 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0471C438 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0471C439 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CD0100C441 SMD capasitor 10 pF/0.25pF 50 V NP0 Philips
CD0569C442 SMD capasitor 5.6 pF/0.25pF 50 V NP0 Philips
CC0471C443 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CD0829C444 SMD capasitor 8p2/0.25pF 50V NP0 Philips
CD0569C445 SMD capasitor 5.6 pF/0.25pF 50 V NP0 Philips
CC0101C460 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0101C461 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0101C462 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0103C463 SMD capasitor 10 nF 10% 50V X7R Philips
CE0105C464 Al elko 1uF/63V 4x7mm Philips 2222 097 58108
CC0473C465 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C466 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C467 SMD capasitor 47 nF 10% 50 V X7R P hilips
CU0105C468 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CU0105C469 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CC0101C471 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0101C472 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0473C473 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0223C474 SMD capasitor 22 nF 10% 50 V X7R P hilips
CC0223C475 SMD capasitor 22 nF 10% 50 V X7R P hilips
CC0101C476 SMD capasitor 100 pF 5% 50V NP0 Philips
CC0102C477 SMD capasitor 1 nF 5% 50V NP0 Philips
XS0001E4_fm5.fm
5
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
CODEPAR TDESCRIPT.V ALUEMANUF.TYPE
CC0102C478 SMD capasitor 1 nF 5% 50V NP0 Philips
CC0473C479 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0472C481 SMD capasitor 4.7 nF 10% 50 V X7R Philips
CC0473C482 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0473C483 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0472C484 SMD capasitor 4.7 nF 10% 50 V X7R Philips
CC0473C485 SMD capasitor 47 nF 10% 50 V X7R P hilips
CC0223C486 SMD capasitor 22 nF 10% 50 V X7R P hilips
CC0471C487 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0473C488 SMD capasitor 47 nF 10% 50 V X7R P hilips
CU0105C489 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CD0100C491 SMD capasitor 10 pF/0.25pF 50 V NP0 Philips
CC0150C492 SMD capasitor 15 pF 5% 50V NP0 Philips
CD0100C493 SMD capasitor 10 pF/0.25pF 50 V NP0 Philips
CC0101C494 SMD capasitor 100 pF 5% 50V NP0 Philips
CD0479C496 SMD capasitor 4.7 pF/0.25pF 50 V NP0 Philips
CD0829C497 SMD capasitor 8p2/0.25pF 50V NP0 Philips
CA0200C498 Trim.kond. 5/20 pF MatsushitaECRLA020E52V
CU0105C501 SMD tantal 1uF/16V 20% 3.2x1.6mm M atsushitaECS T1CY 105R
CD0109C502 SMD capasitor 1 pF/0.25pF 50 V NP0 Philips
CC0223C504 SMD capasitor 22 nF 10% 50 V X7R P hilips
CC0471C505 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0471C506 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CD0479C507 SMD capasitor 4.7 pF/0.25pF 50 V NP0 Philips
CC0471C508 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0471C509 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0223C510 SMD capasitor 22 nF 10% 50 V X7R P hilips
CC0150C511 SMD capasitor 15 pF 5% 50V NP0 Philips
CD0120C512 SMD capasitor 12 pF 5% 50 V NP0 Philips
CC0471C513 SMD capasitor 470 pF 5% 50 V NP0 P hilips
CC0120C515 SMD capasitor 12 pF 5% 50V NP0 Philips
CC0150C516 SMD capasitor 15 pF 5% 50V NP0 Philips
DZ0569D401 SMD zener 5V6 5% 300mW Philips BZX84C5V6
DS0099D402 SMD diode 70 V 200 mA Philips BAV 99
DC0031D403 Cap.diode UHF Philips BBY 31
DS0099D404 SMD diode 70 V 200 mA Philips BAV 99
DC0031D405 Cap.diode UHF Philips BBY 31
DC0031D406 Cap.diode UHF Philips BBY 31
IS5158I401 PLL freq.synthes. CMOS Motorola MC145158-1P
IS0501I402 Two mod. prescaler (2nd MC12022D Motorola) Fujitsu MB501LPF
IS5158I403 PLL freq.synthes. CMOS Motorola MC145158-1P
IS0501I404 Two mod. prescaler (2nd MC12022D Motorola) Fujitsu MB501LPF
IA0272I405\2 x op.amp. LinCMOS Low noise,power Texas TLC27M2ID
LC0334L401 SMD inductor 330 nH S iemens B82412A3331M
LC0334L402 SMD inductor 330 nH S iemens B82412A3331M
LC0334L403 SMD inductor 330 nH S iemens B82412A3331M
LC0334L408 SMD inductor 330 nH S iemens B82412A3331M
LC0334L409 SMD inductor 330 nH S iemens B82412A3331M
LC0334L412 SMD inductor 330 nH S iemens B82412A3331M
PS0001PCB Piirilevy OS0001 66 x 130 x 1.6 Perstorp
QS0031Q401 SMD transistor PNP 1A/60V Philips BSR 31
QSB858Q402 S MD transistor PNP 0.1A/30V F<10dB Philips BC 858 B
QSB848Q403 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q404 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q405 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QS0031Q406 SMD transistor PNP 1A/60V Philips BSR 31
QSB848Q407 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSC849Q408 SMD transistor NPN 0.2A/30V F=1.2dB Philips BC 849 C
QSC859Q409 SMD transistor PNP 0.2A/30V F=1.2dB Philips BC 859 C
QAA093Q411 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
XS0001E4_fm5.fm
6
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
CODEPARTDESCRIPT.VALUEMANUF.TYPE
QAA093Q412 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
QAA093Q413 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
QSB848Q414 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QAA093Q415 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
QAA093Q416 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
QAA093Q417 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
QAA093Q418 SMD transistor NPN 0.25 W 5 GHz Philipsa BFR 93 A
RC0473R401 SMD resistor 47 k 5% 0.125 W Kamaya
RC0102R402 SMD resistor 1 k 5% 0.125 W Kamaya
RC0103R403 SMD resistor 10 k 5% 0.125 W Kamaya
RC0222R404 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0472R405 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0102R406 SMD resistor 1 k 5% 0.125 W Kamaya
RC0102R407 SMD resistor 1 k 5% 0.125 W Kamaya
RM1002R408 Mini-Melf resistor 10k0 1% 0.25W Beyschlag MMA 0204-50
RM5621R409 Mini-Melf resistor 5k62 1% 0.25W Beyschlag MMA 0204-50
RC0101R411 SMD resistor 100 R 5% 0.125 W Kamaya
RC0101R412 SMD resistor 100 R 5% 0.125 W Kamaya
RC0104R413 SMD resistor 100 k 5% 0.125 W Kamaya
RC0331R414 SMD resistor 330 R 5% 0.125 W Kamaya
RC0472R415 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0104R416 SMD resistor 100 k 5% 0.125 W Kamaya
RC0104R417 SMD resistor 100 k 5% 0.125 W Kamaya
RC0100R418 SMD resistor 10 R 5% 0.125 W Kamaya
RC0102R419 SMD resistor 1 k 5% 0.125 W Kamaya
RC0222R420 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0100R421 SMD resistor 10 R 5% 0.125 W Kamaya
RC0822R422 SMD resistor 8.2 k 5% 0.125 W Kamaya
RC0223R423 SMD resistor 22 k 5% 0.125 W Kamaya
RC0473R424 SMD resistor 47 k 5% 0.125 W Kamaya
RC0472R425 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0332R426 SMD resistor 3.3 k 5% 0.125 W Kamaya
RC0472R427 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0103R428 SMD resistor 10 k 5% 0.125 W Kamaya
RC0101R431 SMD resistor 100 R 5% 0.125 W Kamaya
RC0101R432 SMD resistor 100 R 5% 0.125 W Kamaya
RC0153R433 SMD resistor 15 k 5% 0.125 W Kamaya
RC0472R434 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0101R435 SMD resistor 100 R 5% 0.125 W Kamaya
RC0332R436 SMD resistor 3.3 k 5% 0.125 W Kamaya
RC0221R437 SMD resistor 220 R 5% 0.125 W Kamaya
RC0223R438 SMD resistor 22 k 5% 0.125 W Kamaya
RC0102R439 SMD resistor 1 k 5% 0.125 W Kamaya
RC0562R441 SMD resistor 5.6 k 5% 0.125 W Kamaya
RC0221R442 SMD resistor 220 R 5% 0.125 W Kamaya
RC0223R443 SMD resistor 22 k 5% 0.125 W Kamaya
RC0471R444 SMD resistor 470 R 5% 0.125 W Kamaya
RC0560R445 SMD resistor 56 R 5% 0.125 W Kamaya
RC0221R446 SMD resistor 220 R 5% 0.125 W Kamaya
RC0180R447 SMD resistor 18 R 5% 0.125 W Kamaya
RC0271R448 SMD resistor 270 R 5% 0.125 W Kamaya
RC0473R451 SMD resistor 47 k 5% 0.125 W Kamaya
RC0102R452 SMD resistor 1 k 5% 0.125 W Kamaya
RC0105R453 SMD resistor 1 M 5% 0.125 W Kamaya
RC0473R454 SMD resistor 47 k 5% 0.125 W Kamaya
RC0473R455 SMD resistor 47 k 5% 0.125 W Kamaya
RC0224R456 SMD resistor 220 k 5% 0.125 W Kamaya
RQ0103R457 Trimmer resistor 10k 20% 0.5W Bourns 3329H-1-103
RC0222R458 SMD resistor 2.2 k 5% 0.125 W Kamaya
RQ0103R459 Trimmer resistor 10k 20% 0.5W Bourns 3329H-1-103
XS0001E4_fm5.fm
7
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
CODEPARTDESCRIPT.VALUEMANUF.TYPE
RC0222R460 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0103R461 SMD resistor 10 k 5% 0.125 W Kamaya
RC0222R471 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0100R472 SMD resistor 10 R 5% 0.125 W Kamaya
RC0102R473 SMD resistor 1 k 5% 0.125 W Kamaya
RC0473R474 SMD resistor 47 k 5% 0.125 W Kamaya
RC0472R475 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0472R476 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0223R477 SMD resistor 22 k 5% 0.125 W Kamaya
RC0223R478 SMD resistor 22 k 5% 0.125 W Kamaya
RC0104R479 SMD resistor 100 k 5% 0.125 W Kamaya
RC0473R481 SMD resistor 47 k 5% 0.125 W Kamaya
RC0222R482 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0222R483 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0222R484 SMD resistor 2.2 k 5% 0.125 W Kamaya
RC0101R491 SMD resistor 100 R 5% 0.125 W Kamaya
RC0101R492 SMD resistor 100 R 5% 0.125 W Kamaya
RC0472R493 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0560R494 SMD resistor 56 R 5% 0.125 W Kamaya
RC0103R495 SMD resistor 10 k 5% 0.125 W Kamaya
RC0153R497 SMD resistor 15 k 5% 0.125 W Kamaya
RC0472R498 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0102R501 SMD resistor 1 k 5% 0.125 W Kamaya
RC0332R502 SMD resistor 3.3 k 5% 0.125 W Kamaya
RC0223R503 SMD resistor 22 k 5% 0.125 W Kamaya
RC0102R504 SMD resistor 1 k 5% 0.125 W Kamaya
RC0221R505 SMD resistor 220 R 5% 0.125 W Kamaya
RC0562R506 SMD resistor 5.6 k 5% 0.125 W Kamaya
RC0223R507 SMD resistor 22 k 5% 0.125 W Kamaya
RC0471R508 SMD resistor 470 R 5% 0.125 W Kamaya
RC0221R511 SMD resistor 220 R 5% 0.125 W Kamaya
RC0562R512 SMD resistor 5.6 k 5% 0.125 W Kamaya
RC0223R513 SMD resistor 22 k 5% 0.125 W Kamaya
RC0331R514 SMD resistor 330 R 5% 0.125 W Kamaya
RC0680R515 SMD resistor 68 R 5% 0.125 W Kamaya
RC0121R516 SMD resistor 120 R 5% 0.125 W Kamaya
RC0270R517 SMD resistor 27 R 5% 0.125 W Kamaya
RC0181R518 SMD resistor 180 R 5% 0.125 W Kamaya
VN0108V401 8-pin connector Wisher WKP-N8B1G-L
VR0235V402 Coax cable + connector 50 ohm l=n.70mm TaikodenkiTMP-P01X-A1
VR0135V403 Coax connector 50 ohm TaikodenkiTMP-J02X-A1
XO0128X401 TCXO 12.8 MHz 2 ppm Toyocom TCO-903B1
Last
update
13.03.90
XS0001E4_fm5.fm
8
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
Component Side Layout PS0001A0 (Schematic OS0001A0)
XS0001E4_fm5.fm
9
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
Solder Side Layout PS0001A0 (Schematic OS0001A0)
XS0001E4_fm5.fm
10
Product: TDM-20-N / OS0021 Synthesizer
28.1.1999
XS0001E4_fm5.fm
11
Product: TDM-20-N / OW0002 Power supply
28.1.1999
9.0 POWER SUPPLY MODULE OW0002
SPECIFICATIONS
OW0002 Power supply
P.S.U. includes noise filter, 9 V-regulator, speaker amplifier, and relay drivers.
9.0.1 Connector X800
1MUTE
2IGSIGNITION SENSE
3GNDGROUND
4AL
5SPKRSPEAKER4...8 ohm
6VBSUPPLY VOLTAGE 10.8...15.6 V 5 A
9.0.2 Connector X820
11 2 V12V for processor module
29 V9 V regulator 8.5...9 V1 A
3BCUPBACK-UP power supply for RAM-memory
4PWRON/OFF control
5AFINaudio input for speaker amplifier
6IGNIGNITION control
7EXALEXTERNAL ALARM control
8EXM UTECAR RADIO MUTE control
CAR RADIO MUTE relay-driver
0.5A
EXTERNAL ALARM relaydriver 0.5A
9.0.3 Connector X830
1+TXSUPPLY VOLTAGE FOR TRANSMITTER
9.0.4 Operation Principles:
Noise from vehicle electrical-system is filtered with low-pass filter C810, C811, L810,
C813, C812, L811, and zenerdiode D 81 2. M a in relay A800 in dr ive n from connector
X820/4(5 V). The speaker must be connected to X800/5, or otherwise transistor
Q813 conducts and cannot swich the power ON. D811, D814, and transistor Q810
prevent switching power ON when supply voltage is too high.
The output volt age of the reg ulator is set b y R806, R807 , and zenerdi ode D800, and
current limit by R803.
Speaker amplifie r is in st and-by po sition (lo w current- consumpt ion) wh en there i s no
blas voltage in connector X820/5.
XW0002E4_fm5.f
1
Product: TDM-20-N / OW0002 Power supply
28.1.1999
9.0.5 Parts list
CODEPARTDESCRIPT.VALUEMANUF.TYPE
AR0002A800\Relay 12V/10A Guardian 1655S-IC-12D
CC0473C800 SMD capasitor 47 nF 10% 50 V X7R P hilips
CE0106C801 Al elko 10 uF/35 V 5x7mm Philips 2222 097 50109
CC0222C802 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CC0473C803 SMD capasitor 47 nF 10% 50 V X7R P hilips
CP0104C810 Polyester cap 100n 63V 20% Wima
CP0104C811 Polyester cap 100n 63V 20% Wima
CE0228C812 Al elko 2200 uF/25 V 16x25 Elna RE2-25V222M
CE0477C813 Al elko 470 uF/25 V 10x25mm ROE EB00GD347E00R
CE0107C814 Al elko 100uF 16V 7x7mm Philips 2222 097 55101
CE0476C815 Al elko 47 uF/25 V 7x7mm Philips 2222 097 56479
CC0473C816 SMD capasitor 47 nF 10% 50 V X7R P hilips
CE0107C817 Al elko 100uF 16V 7x7mm Philips 2222 097 55101
CC0222C818 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CE0477C819 Al elko 470 uF/25 V 10x25mm ROE EB00GD347E00R
CC0222C820 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CC0222C821 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CC0222C822 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CC0222C823 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CE0476C824 Al elko 47 uF/25 V 7x7mm Philips 2222 097 56479
CC0473C825 SMD capasitor 47 nF 10% 50 V X7R P hilips
CE0107C826 Al elko 100uF 16V 7x7mm Philips 2222 097 55101
CP0104C827 Polyester cap 100n 63V 20% Wima
CC0222C828 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CP0104C829 Polyester cap 100n 63V 20% Wima
CC0473C830 SMD capasitor 47 nF 10% 50 V X7R P hilips
CP0104C831 Polyester cap 100n 63V 20% Wima
CC0222C832 SMD capasitor 2.2 nF 5% 50 V NP0 Philips
CC0223C833 SMD capasitor 22 nF 10% 50 V X7R P hilips
CC0473C834 SMD capasitor 47 nF 10% 50 V X7R P hilips
DZ1569D800 SMD zener 5V6 2% 300mW Philips BZX84B5V6
DS0070D801 SMD diode pair 70V/100mA common cathode Philips BAV 70
DS0017D810 SMD diode 1.5A/400V Philips BYD 17 G
DS0017D811 SMD diode 1.5A/400V Philips BYD 17 G
DT0018D812 Transient filter 18V/50A 1500W Motorola ICTE-18
DS0017D813 SMD diode 1.5A/400V Philips BYD 17 G
DZ0180D814 SMD zener 18V 5% 300mW Philips BZX84C18
DS0070D815 SMD diode pair 70V/100mA common cathode Philips BAV 70
DS0017D816 SMD diode 1.5A/400V Philips BYD 17 G
DS0017D817 SMD diode 1.5A/400V Philips BYD 17 G
IA1020I800 Audio power amplifier 7W/14.4V/4ohm Philip s TDA1020/N4
LA5107L810 Inductor 100uH 5A Fuji SL05B101
VI0040MEK1 Component base 1 base = 40 holes Perlos
VI0040MEK2 Component base 1 base = 40 holes Perlos
VI0040MEK3 Component base 1 base = 40 holes Perlos
VI0040MEK4 Component base 1 base = 40 holes Perlos
VI0040MEK5 Component base 1 base = 40 holes Perlos
VI0040MEK6 Component base 1 base = 40 holes Perlos
PW0002PCB PCB for OW0002 149 x 56 x 1.6mm FR4
QP0032Q800 Power transistor PNP 3A/60V Philips BDT 32 AF
QS0051Q801 SMD transistor PNP 1.5A/45V Philips BCX 51
QSB848Q802 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q803 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q810 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q811 SMD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QS0054Q812 SMD transistor NPN 1.5A/45V Philips BCX 54
QSB848Q813 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
XW0002E4_fm5.f
2
Product: TDM-20-N / OW0002 Power supply
28.1.1999
CODEPARTDESCRIPT.VALUEMANUF.TYPE
QS0054Q814 SMD transistor NPN 1.5A/45V Philips BCX 54
QSB848Q815 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QS0054Q816 SMD transistor NPN 1.5A/45V Philips BCX 54
QSB848Q817 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q818 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB858Q819 S MD transistor PNP 0.1A/30V F<10dB Philips BC 858 B
RC0473R800 SMD resistor 47 k 5% 0.125 W Kamaya
RC0102R801 SMD resistor 1 k 5% 0.125 W Kamaya
RC0103R802 SMD resistor 10 k 5% 0.125 W Kamaya
RA0681R803 Metal film resistor 680R 5% 0.25 W Philips
RC0472R804 SMD resistor 4.7 k 5% 0.125 W Kamaya
RC0102R805 SMD resistor 1 k 5% 0.125 W Kamaya
RM6041R806 Mini-Melf resistor 6k04 1% 0.25W Beyschlag MMA 0204-50
RM1002R807 Mini-Melf resistor 10k0 1% 0.25W Beyschlag MMA 0204-50
RC0330R810 SMD resistor 33 R 5% 0.125 W Kamaya
RC0103R812 SMD resistor 10 k 5% 0.125 W Kamaya
RC0103R813 SMD resistor 10 k 5% 0.125 W Kamaya
RC0103R814 SMD resistor 10 k 5% 0.125 W Kamaya
RC0103R815 SMD resistor 10 k 5% 0.125 W Kamaya
RC0104R816 SMD resistor 100 k 5% 0.125 W Kamaya
RC0473R817 SMD resistor 47 k 5% 0.125 W Kamaya
RC0473R818 SMD resistor 47 k 5% 0.125 W Kamaya
RC0104R819 SMD resistor 100 k 5% 0.125 W Kamaya
RC0473R820 SMD resistor 47 k 5% 0.125 W Kamaya
RC0104R821 SMD resistor 100 k 5% 0.125 W Kamaya
RC0104R824 SMD resistor 100 k 5% 0.125 W Kamaya
RC0334R825 SMD resistor 330 k 5% 0.125 W Kamaya
RC0104R826 SMD resistor 100 k 5% 0.125 W Kamaya
RC0104R827 SMD resistor 100 k 5% 0.125 W Kamaya
RA0479R828 Metal film resistor 4R7 5% 0.25 W Philips
RC0103R829 SMD resistor 10 k 5% 0.125 W Kamaya
RC0104R830 SMD resistor 100 k 5% 0.125 W Kamaya
RC0393R831 SMD resistor 39 k 5% 0.125 W Kamaya
RC0102R832 SMD resistor 1 k 5% 0.125 W Kamaya
VW0106X800 Connector male 6-pin Molex 5569-06-A1
VN0208X820 8-pin connector Wisher WKP-N8SG-L
Last
update
21.04.94
XW0002E4_fm5.f
3
Product: TDM-20-N / OW0002 Power supply
28.1.1999
Component Side Layout PW0002A0 (Schematic OW0002A0)
XW0002E4_fm5.f
4
Product: TDM-20-N / OW0002 Power supply
28.1.1999
Solder Side La yout PW0002A 0 (Schematic OW0002A0)
XW0002E4_fm5.f
5
Product: TDM-20-N / OW0002 Power supply
28.1.1999
XW0002E4_fm5.f
6
Product: TDM-20-N (Forte i) / Audio
28.1.1999
10.0 AUDIO
Audio
10.0.1 Principles Of Audio Operation
Audio is split into three sections, according to part-numbers:
I382 works as input buffer and attenuator and band-pass-filter (300 Hz...3.4 kHz).
I220 and I384D control the microph one li ne VOL in VOX mod e (ran ge c.20 dB ), and
function as two-step limiters (c. 1 dB, 3 dB) in normal use. Yhe circuits combine the
TXAUXOUT and DTMFTX signals too.
I210A act as MICDET AC/DC conventer.
I384C act as dynamic compressor which is passed-by I390B.
C234 and R234 set a 6 dB pre-emph, and I235A act as amplifier.
I235B form a first maximum deviat ion limiter.
I382D form a second limiter and a low-pass-filter with the cut-off frequency of 3.4
kHz.
I382E act as the band-pass-filter of FII signal.
I210B combines FII and FFSKT sig na ls, wh i ch ar e fe d th ro ug h the TXAUD IO li ne to
the synthesizer.
VR is modulated to VFF-voltage for I205C modem connection.
10.0.3 RX-Audio
I382 serves as an amplifier for reciever signals, or an attenuator in AUDLOOPON
mode. From I382F the FII signal branches to TXAUDIO. In the other branch, I382F
filters audio signal (300 Hz...3,4 kHz) and forms a 6 dB de-emph.
I384E works as an attenuator to expandor which is passed-by I390C.
I321A act as ERPDET AC/DC converter.
I361 and I321 together give VOL-control on SPK-line (control range +15...-10 dB),
and also combine DTMF signals. The control is also used in VOX mode. VPS is
modulated to VDref-half-voltage for I321B.
XZ0014E4_fm5.fm
1
Half-voltage goes also to DTMF switch I305A.
I331 and I342A together give VOL-control on ERP-line (control rante +15 dB...-10
dB).
I342 is an amplifier for the system-cable.
10.0.4 Regulator
I380 regulate 9 V to 5 V (VR). Q295 switch on VPS-voltage to the audio parts.
The processor provides 4 MHz clock frequency for the CMOS switched capasitor fil-
ter of which parts B, D, E and F are filters and A generates half-voltage Vbias.
I384A generates half-voltages Vref and VTref. B part is an expandor, C part is an
compressor and D an d E parts are amplifiers.
10.0.5 Audio
Product: TDM-20-N (Forte i) / Audio
28.1.1999
10.0.5.1 Logic Control
MICVOL: 2microphone VOL-c ontrol (0,1,2)
TXAUDCONT: 3TX logic control
ERPVOL: 2erp/spk VOL control (0,1,2)
RXAUDCONT: 7RX logic control
- AUXOFFaccessory bypass
- TXAONTX audio ON
- FFSKTmodem ON
- DTMFONDTMF ON
- FIILOOPON (FII signal loop ON)
- AUDILOOP
- RXAONRX-AUDIO ON
- ERPONhandset ON
- SPKONspeaker ON
- HIDTMFONhi DTMF level ON
- COMPOFFcompandor OFF
- AUDIOPWRaudio power amplifier ON
audioloop from TX to RX
(test)
XZ0014E4_fm5.fm
-DTMFRXON DTMF to speaker ON
2
10.0.6 Audio Input Signals
(ac-values 3 kHz deviation, 1 kHz signal)
Product: TDM-20-N (Forte i) / Audio
28.1.1999
MIC
SOmodem signal775 mVRMS
TXAOUTaccessory to transmitter400 mVRMS
RXAOUTaccessory to erp/speaker400 mVRMS
DTMFTX
RXAUDIOreceiver to audioc.120 VRMS
4 MHz
10.0.7 Audio Output Signals
(ac-values 3 kHz deviation, 1 kHz signal)
MICDETmicrophone DC-signal level to processor
AD converter0...8 VDC
PWRSWPWR-switch signal5/0 VDC
TXAUXINmicrophone to aux400 mVRMS
RXAUXINreceiver to aux300 mVRMS
TXAUDIOaudio to synthes izer550 mVRMS
ERPDETreceiver DC-signal level to processor
AD converter0...8 VDC
DTMFRX
SPKaudio output to speaker (+15...-10 dB)120 mVRMS
ERPaudio output to handset (+15...-10 dB)300 mVRMS
FFSKRmode m signal400 mVRMS
HOOKHOOK-signal from handset5/0 mVRMS
DTMF-signals from receiver to DTMF
receiver
(+ HOOK-signal)(VOL 0 dB)
microphone signal
(+PWRSW-sign al )
DTMF generator to TX and
speaker
4 MHz clock to audio-filter circuit
1 VRMS
150 mVRMS
400 mVRMS
(VOL 0 dB)
XZ0014E4_fm5.fm
3
10.0.7.1 Operating Voltages In Audio
9Vsupply voltage from OW-module9V
VRconstant voltage in audio (regulated)5V
VPSi nterrupt voltage in audio (regulated)5V
VTREFTX ha lf-voltage2.5V
VFFDC bias to modem1.5V
VREFRX half-voltage (interrupt ed)2.5V
VDREFRX half-voltage (interrupted)2.5V
VbiasRX/TX half-voltage (continuous)2.5V
10.0.8 Audio Settings
Measurements mu st be made with a mult imeter of 10 Mo hm resista nce. AC range of
meter should be 20 Hz... 20 kHz. LOCAL-BOX must be used when making adjustments.
Product: TDM-20-N (Forte i) / Audio
28.1.1999
10.0.9 Operating Voltages
9VX-PWRpin 29V
VRI380pin 14.8 ... 5.1 V
VbiasI382pin 72.4 ... 2.55 V
VrefI384pin 82.35 ... 2.5 V
VPSI384pin 204.7 ... 5.0 V
VTrefI384pin 82.35 ... 2.5 V
VFFI205pin 91.4 ... 1.6 V
VDrefI321pin 52.35...2.5 V
10.0.10 RX Audio
RF-generator setting s:
- frequency 465.225 MHz
- rf-level 60 dBuV
- modulation frequency 1 kHz
- deviation 3 kHz
XZ0014E4_fm5.fm
4
Local-box switches set to SERVICE and RADIO
Set mid-channel (lo cal 36#)
By-pass compandor (local 200*, COMP OFF).
Turn on RX-audio (local 22# RXA ON , local 200# EXP ON). DO NO TOUCH VOL-
control during setting operation.
RX-audio level is set with 300 mVRMS trimmer R302 (RX) and is measured at the
local-box METER-connector.
Reset (local 0#).
10.0.11 TX-Audio
10.0.11.1 Normal Deviation:
- Local-box switches set to SERVICE and RADIO.
Product: TDM-20-N (Forte i) / Audio
28.1.1999
- Turn to TX-audio (local 21#, TXA ON).
- By-pass compandor (local 200*, COMPOFF)
- Feed a 1 kHz, 1 VRMS signal from a AF-generator to the local-box GEN
connector.
- Connect multimeter to X-SYNTE, pin 2, and adjust trimmer R241 (TX) to
show 550 mVRMS.
- Switch on transmitter to medium power (LOCAL 32#, M TXON) on midchannel (local 36#, MIDLEC).
- Adjust deviation with trimmer R459 (MOD; OS-module) to +/-3 kHz peak.
- Drop AF-generator leve l until deviation is +/-1 kHz and m ea sur e co mp ar ative
level at X-SYNTE, pin 2.
- Change AF-generator frequency to 300 Hz.
- Raise pt-generator level until meter level showe the previous comparative
level.
- Adjust the deviation with trimmer R457 (COMP., OS-module) to +/-1 kHz.
10.0.12 Maximum Deviation
- Change AF-generator frequency to 1 kHz.
- Raise AF-generator level to 3.33 V rms
- Compare channels 0,90 and 180 in turn, and check that max. deviation is +/-
4.5 kHz. If deviation exceeds 4.5 kHz then adjust with trimmer R244 to max.
4.45 kHz.
XZ0014E4_fm5.fm
5
10.0.13 FFSKT Deviation
- Switch to medium power (local 32#, M TXON).
- Turn FFSKT on (local 12#, SEND 0).
- Adjust deviation with trimmer R265 (FFSKT) to +/-4.2 kHz.
- Reset (local 0#).
10.0.14 FII Deviation, Method 1
RF-generator setting s:
- frequency 465.225 MHz (mid-channel)
- RF-level 60 dBuV
- modulation frequency 4 kHz
Product: TDM-20-N (Forte i) / Audio
28.1.1999
- deviation 600 Hz
Open FII-LOOP (local 23#, FII ON).
Medium-power ON (local 32#, MTXON)
Adjust devialtion with trimmer R255 (FII) to +/-670 Hz
FII-limits 610...730 Hz
Reset (local 0#).
10.0.15 FII Deviation, Method 2
(not recommendab l e)
- Set phone to NMT-mode
- Set CMT to mid-channel
- Make a call with CMT
- Set handset to MUTED-mode
- Find "PASS SUP. TONE" from CMT
XZ0014E4_fm5.fm
- Set CMT-deviation frequency to 0 Hz
- Adjust deviation with trimmer R255 (FII) to +/-650 Hz
- FII-limits 590...710 Hz
- End call
6
10.0.16 Limiter Adjustment
- Local-box switches set to SERVICE and RADIO
- Turn on TX-audio (local 21#, TXA ON)
- Switch to medium power (local 32#, MTXON)
- Feed a 1 kHz, 1 VRMS signal from a AF-generator to the local-box GEN
connector
- Indicated deviation should be +/-3 kHz
- Set to adjust-mode (local 39#, DEV LO)
- Raise AF-generator level until deviation reading is +/-3.4 kHz; handset
reading should be c. 80...90 (AD-converter value)
- Press OK (first limiter-level set to EEPROM memory); "DEV HI" on display
- Raise pt-generator level until deviation is +/-4.15 kHz
Product: TDM-20-N (Forte i) / Audio
28.1.1999
- Press OK (second limiter level stored to EEPROM)
- Should the maximum deviation remain below +/-4.15 kHz, set the second
limiter level to AD-converter value 145 (display shows DEV HI)
- Limiter settings can be checked with local 39*, DEVLIM.
10.0.17 Deviation Limiter
There is an SW controlled deviation limiter in the phone. The purpose of the deviation limiter is to compress microphone levels which causes maximum deviation and
distortion to transmitted voice.
Deviation limiter is tuned during manufacturing.
There are two thresholds in the limiter. When microphone signal is above tuned
threshold the limiter attenuates it. Attenuation is 0.8 dB when microphone signal is
above the first threshold an d 2.7 dB when above the second.
10.0.18 Voice Operated HF
10.0.18.1 General:
Voice operated HF software uses microphone and speaker level detectors to measure, and TX and RX attenuators to set the microphone and speaker signals.
Voice operated HF is designed in such a way that a detected microphone signal
above tuned HF threshold always attenuates the speaker signal.
Microphone threshold is tuned in LOCAL by installer to work properly in the vehicl e
where the phone is used.
XZ0014E4_fm5.fm
7
Product: TDM-20-N (Forte i) / Audio
28.1.1999
10.0.18.2 Seesaw Model Of The Voice Operated HF
1. When microphone signal rises above tuned threshold the TX attenuation is
decreased and RX attenuation is increased.
Note: The deviation limiter may work which causes some TX attenuation.
2. When microph one signal drops bel ow tuned t hreshold TX a ttenuation i s increase d
and RX attenuation is decreased.
Note: The actual RX attenuation minimum depends on user preset speaker volume
level.
3. When there are simult aneous spe aker and micro phone signals HF i s set in duplex
state where TX and RX attenuators are in middle positions.
Note: The actual RX attenuation depends on user preset speaker volume level.
10.1 Processor Functions
All audio and processor functions of the radio are located on the same PCB; other
modules are interconnected thro ugh it. Only the RF-signals have a different route.
The processor controls the audio and radio units and the handset.
10.1.1 The Processor Includes
CPU68HC118-bit, 8 A/D, 512*8 EEPROM, I/O
PROM27C51264K*8 EPROM, program me m or y
RAM
MODEMFX439
I/O33 pcs outputs and 18 pcs inputs
DTMFTXPCD3312DTMF generator and tone signals
DTMFRXMV8870DTMF receiver
TXLOGTX power adjustment and control
44658K*8 CMOS
RAM
program space and short-code memory
1200bd FFSK modem, radio path signalling
XZ0014E4_fm5.fm
8
10.1.2 Connectors:
10.1.2.1 Handset:
XBUS
1GNDground
2MICFaudio signal from microphone1 VRMS
3AGNDaudio ground
4
5EXTALF
6
7I2cINTFi2c interrupt from handset, 0-active
8SDAXFi2c dataline, duplex
9+9VF+9 V voltage to handset.5 A
10ERPFaudio earphone (VOL 0dB).4 VRMS
11RXFIXF
12PTTFpush to talk, exterior switch to ground
13
14
15SCLXFi2c clock to handset0/5 V
AUTOCALLF
Product: TDM-20-N (Forte i) / Audio
28.1.1999
activates the autocall function12 V
10.1.2.2 Regulator:
X-PWR
1VB12 V operating voltage via relay5 A max
2+9V9 V operating voltage1 A max
3VBATcontinuous power supply
4RELAYcurrent relay control, PWR on5 V
5SPKaudio signal to speaker amplifier120 mV
6IGNactivates IGN function12 V
7EXTALexternal alarm control, 5 V activates
8EXTMUTEcar radio muting 5 V activates
for maintaining RAM standby
XZ0014E4_fm5.fm
9
10.1.2.3 Synthesizer:
X-SYNTE
1VBsynthesizer 12 V operating voltage
2TXAUDIOtx audio modulation550 mV
3GNDground
4SREenable pulse for rx scaler5 V
5STEenable pulse for tx scaler5 V
6SCLKclock for rx and tx data0/5 V
7SDATArx and tx data for scalers0/5 V
8TXVCOtx for vco ON5 V
10.1.2.4 Receiver:
X-RX
Product: TDM-20-N (Forte i) / Audio
28.1.1999
1+9Voperating voltage to receiver9 V
2RSSIrx signal strength indicator, analog0...5 V
3RXAUDIOrx audio signal100...150 mV
4GNDground
10.1.2.5 Transmitter:
X-TX
1TXSENSEtx power sensing, analog0...10 V
2
3TXBIAStx bias 9 V 50 mA, Ov= tx off
4
TXPWRCTR
tx power control, analog0...9 V
XZ0014E4_fm5.fm
10
10.1.2.6 Accessory:
X-E1
1TXAIN
2TXAOUT
3GND
4RXAIN
5RXAOUT
6VBoperating voltage12 V
7I2cINTi2c interrupt, 0 active
8
9SDAi2c data0/5 V
10SCLi2c c lock0/5 V
EXTi2cE
N
Product: TDM-20-N (Forte i) / Audio
28.1.1999
enable to accessory’s i2c bus5 V
- Power switch connected to mic line, grounds the mic line.
- Hook switch connected to erp line, dropping th e dc level of the handset erp
line while the handset is on the holder.
10.1.3 Circuit Diagram
The circuit diagram of the processor is divided into six parts. The first figure shows
the connector interfaces and the division between audio and processor. The orther
five figures illustrate the subfunctions. Audio is shown in three drawings. In the diagrams, the signals have been given names so that identical names are connected
between drawings.
The circuit includes:
OACONNfigure of PCB connecto rs (sheet 1 of 9)
CPUcpu, memory coding and modem (sheet 5 of 9)
MEM
IOinput and output gates, DTMF rx and tx (sheet 6 of 9)
TXLOGTX control logic (sheet 8 of 9)
AUDIOaudio power supply and block diagrams (sheet 2 of 9)
RXAUDIOreceiver audio parts (sheet 3 of 9)
TXAUDIOtransmitter audio parts (sheet 4 of 9)
SISsis function (sheet 9 of 9)
memory (RAM, EPROM), supply inp ut and start-up(sheet 7 of
9)
10.1.3.1 Component Numbering
The components on each module are numbered unambiguously. Each component
number is only shown in one place. The processor has the numbers between 001
and 199, and the audio between 200 and 399.
XZ0014E4_fm5.fm
11
Product: TDM-20-N (Forte i) / Audio
28.1.1999
10.1.3.2 Functions
The I050 is the processor circuit. It includes the CPU, the 512*8bit EEPROM, timers
A/D converters and serial and parallel I/O lines. The X052 is an 8 MHz clock oscillator; diving this by a factor of 4 gives timing signal E.
While the processor is working, RESET is 5 V, VCC is 5 V, E is 2MHz; AS, R/W, and
AO...A15 pulses must change between 0 and 5 V.
The address codes for memory circuits and external I/O-circuits are made with
I103...I107. The chipselects CSR, CSP and CSIO are 0-active.
The FFSK modem I065 has its own clock X065 4.032 MHz. The modem is connected to CPU by seria l lin es, re cep ti on is con nect ed to the syncron gate, an d tra nsmission is controlled by IRQ-interrupt. The modem gives 1200 Hz clock pulses
RXCLK and TXCLK to the processor.
The data detector i s located in th e modem, and its spee d is determine d by C070 and
C073.
The 4 MHz clock required by the au dio circuit is ob tained by dividing the CPU clocksignal with I 062.
C040 and R040 sense the length of voltage break, the voltage drops during the
break, after which the voltage is measured with an A/D converter. The time constant
is approx. 10 seconds.
The program memory is in 64k*8 EPROM and it uses the addresses
4000H...FFFFH.
The RAM memory is in 8k*8 CMOS RAM using addresses 0000H...1FFFH. The
power supply to RAM has three different paths: in normal use through D133, when
the radio is OFF, the D135 regulates the voltag e, and when the battery power is disconnected, the RAM gets its supply from A135 (3 V lithium battery).
Voltage control circuit Q128, Q130, and D126 stops the processor, and resets the
control functions when the supply voltage drops below 7 V. When the voltage
exceeds 8 V, the processor is restarted. The power supply switch logic I118 is also
connected to RAM supply in or der to m aint ai n proper RAM functio ns when the radi o
is off.
The power switch (PWRSW) is ground-connected, and activates the current relay
while pressed. The program starts and checks the PWRSWS line to ensure that the
button is pressed and sets the current relay to hold mode on the PWRCTRL line. If
the power switch is pressed a long time, the program trips to the PWROFF line. The
C1231 and R123 maintains stored control during a short voltage brea k, i.e the relay
becomes active again when the volt age comes back within 10 second s. It also works
as a control circuit in case of prolonged voltage-drop or processor malfunction and
after 10 seconds the radio will switch off.
XZ0014E4_fm5.fm
12
Product: TDM-20-N (Forte i) / Audio
28.1.1999
While the IGN line is connected, the radio is switched on when IGN rises to 12 V.
The radio is switched off by the mains switch or by the handset-programmable timer
(0...99 h) when IGN goes to 0.
The buffers of the i2c path (to the handset) are Q138, Q139 and I094C,D.
The external (outside CPU) I/O gates I090...I094are 8-bit addressable latches. DAT A
is sent ot the output determined by three address lines. When the RESET line goes
down, it closes all outputs down too.
The input circuit I096 works correspondingly, except that there are inputs instead of
outputs.
The DTMF receiver I097 gives an StD pulse at the beginning of the tone and the
data is then in lines Q0...Q3. The StD closes down when the tone signal finishes.
The DTMF generator I099 is I2c bus controlled. It forms DTMF tones and all radio
tone signals. The crystal X099works as a common clock for both DTMF circuits and
it is controlled by the program.
The transmitter contro l logi c set s th e TX power to the right l evel an d turn s the po wer
off. The TXVCO signal sets the transmitter to standby mode (bias on), the TX0 and
TX1 set the power levels and the TXON turns the power on and off.
TXVCOTX0TX1TXON
0xxx tx off
1xx0tx standby, no power
1001low tx power
1011medium tx power
1101hig h tx power
XZ0014E4_fm5.fm
13
Product: TDM-20-N (Forte i) / Audio
28.1.1999
Component Side Layout PA0014A0 (Schematic OA0014A-I2)
XZ0014E4_fm5.fm
14
Product: TDM-20-N (Forte i) / Audio
28.1.1999
Solder Side La yout PA0014A0 (Schematic OA0014A - I2)
CODEPARTDESCRIPT.VALUEMANUF.TYPE
LC0105L006 SMD inductor 1.0 uH Siemens B82412-A1102-M
LC0105L007 SMD inductor 1.0 uH Siemens B82412-A1102-M
LC0105L009 SMD inductor 1.0 uH Siemens B82412-A1102-M
LC0105L010 SMD inductor 1.0 uH Siemens B82412-A1102-M
LC0105L011 SMD inductor 1.0 uH Siemens B82412-A1102-M
LC0105L012 SMD inductor 1.0 uH Siemens B82412-A1102-M
PA0014PCB PCB for OA0014 Forte 450 I Aspocomp
QSB848Q063 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q114 SMD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q122 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q128 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q130 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q131 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q138 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB858Q139 S MD transistor PNP 0.1A/30V F<10dB Philips BC 858 B
QSB848Q151 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB858Q153 S MD transistor PNP 0.1A/30V F<10dB Philips BC 858 B
QSB848Q159 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q165 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q168 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB848Q169 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
QSB858Q295 S MD transistor PNP 0.1A/30V F<10dB Philips BC 858 B
QSB848Q375 S MD transistor NPN 0.1A/30V F=2dB Philips BC 848 B
RD0103R011 SMD resistor 10 k 5% 0.125 W Kamaya
RD0104R015 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R020 SMD resistor 10 k 5% 0.125 W Kamaya
RC0000R022 SMD resistor 0 R Kamaya
RD0104R030 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R031 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R032 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R034 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R035 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R036 SMD resistor 100 k 5% 0.125 W Kamaya
RD0105R038 SMD resistor 1 M 5% 0.125 W Kamaya
RD0104R039 SMD resistor 100 k 5% 0.125 W Kamaya
RD0105R040 SMD resistor 1 M 5% 0.125 W Kamaya
RD0104R042 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R043 SMD resistor 10 k 5% 0.125 W Kamaya
RD0103R045 SMD resistor 10 k 5% 0.125 W Kamaya
RD0104R046 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R048 SMD resistor 10 k 5% 0.125 W Kamaya
RD0104R049 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R050 SMD resistor 10 k 5% 0.125 W Kamaya
RD0105R052 SMD resistor 1 M 5% 0.125 W Kamaya
RD0104R060 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R061 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R063 SMD resistor 10 k 5% 0.125 W Kamaya
RD0103R064 SMD resistor 10 k 5% 0.125 W Kamaya
RD0105R065 SMD resistor 1 M 5% 0.125 W Kamaya
RD0334R073 SMD resistor 330 k 5% 0.125 W Kamaya
RD0222R074 SMD resistor 2.2 k 5% 0.125 W Kamaya
RD0333R075 SMD resistor 33 k 5% 0.125 W Kamaya
RD0684R076 SMD resistor 680 k 5% 0.125 W Kamaya
RD0104R077 SMD resistor 100 k 5% 0.125 W Kamaya
RD0101R078 SMD resistor 100 R 5% 0.125 W Kamaya
RD0104R091 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R092 SMD resistor 100 k 5% 0.125 W Kamaya
RD0474R093 SMD resistor 470 k 5% 0.125 W Kamaya
RD0103R094 SMD resistor 10 k 5% 0.125 W Kamaya
RD0474R096 SMD resistor 470 k 5% 0.125 W Kamaya
XA0014E4_FM5.f
19
Product: TDM-20-N (Forte i) /
28.1.1999
CODEPARTDESCRIPT.VALUEMANUF.TYPE
RD0104R097 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R098 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R110 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R111 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R112 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R113 SMD resistor 10 k 5% 0.125 W Kamaya
RD0104R114 SMD resistor 100 k 5% 0.125 W Kamaya
RD0105R115 SMD resistor 1 M 5% 0.125 W Kamaya
RD0104R117 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R118 SMD resistor 100 k 5% 0.125 W Kamaya
RD0104R119 SMD resistor 100 k 5% 0.125 W Kamaya
RD0105R120 SMD resistor 1 M 5% 0.125 W Kamaya
RD0104R122 SMD resistor 100 k 5% 0.125 W Kamaya
RD0223R123 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R124 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R126 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R127 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R128 SMD resistor 22 k 5% 0.125 W Kamaya
RD0474R129 SMD resistor 470 k 5% 0.125 W Kamaya
RD0223R130 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R131 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R132 SMD resistor 22 k 5% 0.125 W Kamaya
RD0101R134 SMD resistor 100 R 5% 0.125 W Kamaya
RD0103R135 SMD resistor 10 k 5% 0.125 W Kamaya
RD0104R137 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R138 SMD resistor 10 k 5% 0.125 W Kamaya
RD0103R140 SMD resistor 10 k 5% 0.125 W Kamaya
RD0101R141 SMD resistor 100 R 5% 0.125 W Kamaya
RD0101R142 SMD resistor 100 R 5% 0.125 W Kamaya
RD0104R150 SMD resistor 100 k 5% 0.125 W Kamaya
RD0223R151 SMD resistor 22 k 5% 0.125 W Kamaya
RD0103R152 SMD resistor 10 k 5% 0.125 W Kamaya
RD0101R153 SMD resistor 100 R 5% 0.125 W Kamaya
RM1003R155 Mini-Melf resistor 100k 1% 0.25W Beyschlag MMA 0204-50
RM1003R156 Mini-Melf resistor 100k 1% 0.25W Beyschlag MMA 0204-50
RM4643R157 Mini-Melf resistor 464k 1% 0.25W Beyschlag MMA 0204-50
RD0223R158 SMD resistor 22 k 5% 0.125 W Kamaya
RM3922R159 Mini-Melf resistor 39k2 1% 0.25W Beyschlag MMA 0204-50
RD0224R161 SMD resistor 220 k 5% 0.125 W Kamaya
RI0103R162 SMD trimmer resistor 10k 20% 0.25 W Copal ST-4A
RM4752R163 Mini-Melf resistor 47k5 1% 0.25W Beyschlag MMA 0204-50
RD0223R164 SMD resistor 22 k 5% 0.125 W Kamaya
RM1783R165 Mini-Melf resistor 178k 1% 0.25W Beyschlag MMA 0204-50
RD0103R166 SMD resistor 10 k 5% 0.125 W Kamaya
RD0223R167 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R168 SMD resistor 22 k 5% 0.125 W Kamaya
RD0223R169 SMD resistor 22 k 5% 0.125 W Kamaya
RD0104R181 SMD resistor 100 k 5% 0.125 W Kamaya
RD0103R182 SMD resistor 10 k 5% 0.125 W Kamaya
RD0103R183 SMD resistor 10 k 5% 0.125 W Kamaya
RD0103R184 SMD resistor 10 k 5% 0.125 W Kamaya
RD0103R185 SMD resistor 10 k 5% 0.125 W Kamaya
RM3922R200 Mini-Melf resistor 39k2 1% 0.25W Beyschlag MMA 0204-50
RM1002R202 Mini-Melf resistor 10k0 1% 0.25W Beyschlag MMA 0204-50
RM2003R203 Mini-Melf resistor 200k 1% 0.25W Beyschlag MMA 0204-50 BL
RM3013R205 Mini-Melf resistor 301k 1% 0.25W Beyschlag MMA 0204-50
RM1623R206 Mini-Melf resistor 162k 1% 0.25W Beyschlag MMA 0204-50
RM3012R210 Mini-Melf resistor 30k1 1% 0.25W Beyschlag MMA 0204-50
RM2213R211 Mini-Melf resistor 221k 1% 0.25W Beychlag MMA 0204-50
RM6813R212 Mini-Melf resistor 681k 1% 0.25W Beyschlag MMA 0204-50