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PM 1000
1 kW FM Broadcasting Transmitter
User’s Manual
Release 1.0.1
- DB ELETTRONICA TELECOMUNICAZIONI S.p.A. -
- Riviera Maestri del Lavoro 20/1 - 35127 Z.I. SUD PADOVA ITALY -- Ph. (049) 870-0588 - Fax. (049) 870-0747 -
- http://www.dbbroadcast.com -
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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SAFETY NOTICES
WARNING
To avoid risks of electrical shocks or fire, only qualified personnel should execute the procedures
specified in this manual.
WARNING
When the protective covers of any device or component connected to a 110 / 240 VAC source by a
power cord are removed, voltages and currents dangerous to life may be exposed.
WARNING
Contact with 110 / 240 Volts of alternating current and associated direct current and voltages can be
fatal.
DANGEROUS
RISK OF ELECTRICAL SHOCK DO NOT OPEN COVERS
CAUTION
To reduce the risks of electrical shock, do not remove the cover (or the back). Refer, for servicing,
to qualified service personnel. This installation should be done by a qualified person and should
comply with to all local applicable laws.
NOTICE: ALL THE SPECIFICATIONS AND TECHNICAL INFORMATION IN THIS MANUAL
ARE SUBJECT TO CHANGE WITHOUT NOTICE.
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INDEX
1. PM1000 FM TRANSMITTER ................................................................................................................................ 4
1.1 GENERAL DESCRIPTION ............................................................................................................................... 4
2. TECHNICAL SPECIFICATIONS ....................................................................................................................... 11
3. INSTALLATION .................................................................................................................................................... 13
3.1 FREQUENCY CHANGE ................................................................................................................................. 14
3.2 ADJUSTMENTS AND MEASURES ............................................................................................................... 16
3.3 EXTERNAL CONTROL AND MEASURES .................................................................................................. 17
3.3.1 SYSTEM CHECK SECTION ..................................................................................................................... 17
3.3.2 MEASURES / CONTROLS SECTION ...................................................................................................... 18
3.4 GENERAL BLOCK DIAGRAM DESCRIPTION ........................................................................................... 20
4. AMPLIFIER SECTION ......................................................................................................................................... 21
4.1 GENERAL DESCRIPTION ............................................................................................................................. 21
4.2 30 W PREAMPLIFIER/DRIVER STAGE ....................................................................................................... 21
4.3 AMP30 PRE AMPLIFIER PARTS LIST ......................................................................................................... 24
4.4 AMP300 300 W MODULE AMPLIFIER ......................................................................................................... 25
4.5 AMP300 AMPLIFIER PARTS LIST................................................................................................................ 28
5. POWER SUPPLY STAGE .................................................................................................................................... 32
5.1 GENERAL DESCRIPTION ............................................................................................................................. 32
5.2 POWER SUPPLY BOARD 04011-001 PARTS LIST ...................................................................................... 36
5.3 RS-75-24 SWITCHING POWER SUPPLY ..................................................................................................... 39
5.4 0601-008 POWER SUPPLY BOARD .............................................................................................................. 42
5.5 POWER SUPPLY PART LIST ......................................................................................................................... 44
6. MODULATOR STAGE ......................................................................................................................................... 45
6.1 GENERAL DESCRIPTION ............................................................................................................................. 45
6.2 SINTEL ‘96 MODULATOR BOARD .............................................................................................................. 46
6.3 MODULATOR BOARD PARTS LIST ............................................................................................................ 53
7. PROTECTION BOARD ........................................................................................................................................ 56
7.1 PROTECTION BOARD N°1 PART LIST ....................................................................................................... 62
7.2 PROTECTION BOARD N°2 PART LIST ....................................................................................................... 70
8. METER STAGE ..................................................................................................................................................... 71
8.1 GENERAL DESCRIPTION ............................................................................................................................. 71
8.2 METER BOARDS PARTS LIST ..................................................................................................................... 76
9. IN-AUDIO BOARD ................................................................................................................................................ 78
9.1 IN-AUDIO BOARD PARTS LIST ................................................................................................................... 80
9.2 IN-AUDIO BOARD JUMPERS SETTING ...................................................................................................... 81
10. TRANSMITTER OPTIONS .............................................................................................................................. 82
10.1 EXTERNAL FREQUENCY CONTROL (/C OPTION) ..................................................................................... 82
10.2 EXTERNAL FREQUENCY CONTROL PARTS LIST ................................................................................... 84
11. STEREO ENCODER BOARD (/S OPTION) .................................................................................................. 85
11.1 CHANNELS PRE- EMPHASIS SETTING ...................................................................................................... 85
11.2 STEREO ENCODER PARTS LIST ................................................................................................................. 96
12. APPENDIX .......................................................................................................................................................... 99
12.1 APPENDIX A - XLR AUDIO CONNECTORS PINOUTS .............................................................................. 99
12.2 APPENDIX B - MOSFET REPLACEMENT ................................................................................................. 100
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1. PM1000 FM TRANSMITTER
1.1 GENERAL DESCRIPTION
The PM1000 is a complete FM broadcasting transmitter with continuously adjustable output power,
0 to 1050W. Made with MOSFET technology, can be used as stand-alone complete transmitter or
as driver for high power amplifiers.
On the PM1000 the use of MOSFET allows:
- Higher efficiency ( ≈ 85%);
- High gain (high transconductance and low internal reactive capacitance);
- High thermal stability (negative coefficient for drain current).
The output frequency range is between 87.5 and 108 MHz. Frequency setting is made using internal
dip switches or external selectors (/C option). The minimum frequency step is 10 kHz.
The transmitter has high frequency stability, due to the use of the Digital Phase Locked Loop
system and a very low drift reference quartz.
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An internal deviation limiter controls the maximum frequency deviation, thus avoiding adjacent
channel interference in case of accidental over modulation. In order to limit over modulation, it is
necessary to insert the jumper jp6 in the modulation board to enable the limiter.
Valuable characteristics of PM1000 include intelligent protections. Circuits to protec from load
mismatching (VSWR) and overtemperature (TEMP) allow to otain a very high reliability in all
conditions. Every alarm condition is monitored by means of front panel leds.
The front panel led bar enable the full, easy and fast verification of the main parameters and
condition of operation. The output power, the reflected power, the voltage supply of the power
amplifier, the frequency deviation, L&R audio level, and MPX are continuously monitored.
It is possible, using the front panel adjustments, to control the following settings: output power
(PWR adj.), frequency deviation (DEV adj.), transmitting frequency (option /C), manual/remote
control selection (option /R) and the mono/stereo selection (option /S).
An output 10th order elliptic LP filter ensures a pure RF spectrum, compatible with the most
stringent international requirements. As well, a high efficiency switching mode power supply
reduces the power consumption, and ensures reliable operation.
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Fig. 1.1 - PM1000 TRANSMITTER FRONT VIEW
1) Overtemperature protection indicator 7) Contraves (option /C) 13) Mono/Stereo mode selector 19) L/R channel level measure indicator
2) Indicator of unbalancing between modules 8) RF monitor BNC connector 14) Forward power measure indicator 20) Measure selector
3) Power limiter indicator 9) Output power trimmer adj. 15) Reflected power measure indicator 21) Measure instrument
4) VSWR protection indicator 10) Deviation trimmer adj. 16) Vpa voltage measure indicator
5) Remote shut-down indicator 11) Lock frequency indicator 17) Ipa current measure indicator
6) Indicator of the on/off transmitter state 12) Manual/Remote selector 18) Frequency deviation measure indicator
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Fig. 1.2 – PM1000 TRANSMITTER REAR VIEW
1) RF output DIN 7/16” connector 7) SCA2 input BNC connector 13) MPX input level adj. 19) Sync. input BNC connector
2) Mains power supply connector 8) SCA2 level adj. 14) MPX input BNC connector 20) Interlock BNC connector
3) Mains On/Off switch 9) Left channel (or mono) input level adj. 15) SCA1 level adj.
4) Remote control DB25 connector 10) Left channel (or mono) input XLR connector. 16) SCA1 input BNC connector
5) SCA3 input BNC connector 11) Right channel input level adj. 17) MPX Out BNC connector
6) SCA3 level adj. 12) Right channel input XLR connector 18) AUX input BNC connector
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Fig. 1.3 – PM1000 TRANSMITTER TOP VIEW
1) Blower 6) Remote control board
2) Output filter 7) Protection board (controls)
3) Output coupler 8) Protection board (panel)
4) AMP300, 300 W amplifier boards
5) Switching power supply board
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Fig. 1.4 – PM1000 TRANSMITTER BOTTOM VIEW
1) Sintel ’96 modulator board 5) Power supply board 0601-008
2) Coder stereo board 6) Measure boards
3) Contraves board (/C option) 7) AMP30, 30 W pre-amplifier board
4) Power supply board RS 75-24
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2. TECHNICAL SPECIFICATIONS
RF SPECIFICATIONS
Operating frequency range .......................................................................................... 87.5 to 108 MHz
Operating frequency setting ................................ synthesised with internal dip switches, 10 kHz step
..................................................................................... synthesised by front panel switches (/C option)
Output impedance .......................................................................................................................... 50 Ω
Output connector ................................................................................................................................. N
Output power...................................................................................................................... 0 to 1050 W
Power tolerance ........................................................................................................................... ± 1 dB
Harmonics ................................................................................................................................. ≤-68 dB
Spurious .................................................................................................................................... ≤-80 dB
Syncro AM modulation ............................................................................................................. ≤-55 dB
Asyncro AM modulation .......................................................................................................... ≤-60 dB
Frequency stability
Thermal drift (0 to 50 °C) ....................................................................................................... ± 250 Hz
Aging drift ..................................................................................................................... ± 300 Hz / year
MODULATION
Mono operation
Input level -6 to +10 dBm
Input connector ............................................................................................................... XLR balanced
Input impedance ........................................................................................................................... 600 Ω
Bandwidth (± 0.25 dB) ................................................................................................. 20 Hz to 15 kHz
Attenuation of frequencies ≥ 19 kHz ......................................................................................... ≥50 dB
Preemphasis .......................................................................................................................... 50/75 μsec
S/N ratio (± 75 kHz peak dev. with 1 kHz input, 50μs de-emphasised) .................................... ≥75 dB
THD+N (± 75 kHz peak dev. with 1 kHz input, unweighted) ..................................................... ≤0.1%
Stereo operation (with stereo coder included in /S model)
L & R input level ............................................................................................................ -6 to +10 dBm
Input connectors .............................................................................................................. XLR balanced
Input impedance .......................................................................................................................... 600 Ω
Bandwidth (± 0.25 dB) ................................................................................................. 20 Hz to 15 kHz
Attenuation of frequencies ≥ 19 kHz ......................................................................................... ≥50 dB
Preemphasis .......................................................................................................................... 50/75 μsec
S/N ratio (± 75 kHz peak dev. with 1 kHz input, 50μs de-emphasised) .................................... ≥70 dB
THD+N (± 75 kHz peak dev. with 1 kHz input, unweighted) ..................................................... ≤0.1%
Stereo separation ........................................................................................................................ ≥60 dB
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Stereo operation (with external stereo coder /S option)
MPX input level ............................................................................................... 2.2 Vpp per 75 kHz dev
Input connector ............................................................................................................................. BNC
Input impedance ........................................................................................................................... 10 kΩ
Bandwidth (± 0.25 dB) ............................................................................................... 20 Hz to 100 kHz
MEASURES
Forward power
Reflected power
Vpa units supply
Ipa total of all amplifier units
Deviation
L/R level
PROTECTION
The internal logic circuitry provides proportional feedback protection, without on-air interruptions,
for:
- VSWR
- air over-temperature
- insufficient cooling
- fault of RF stages
AC POWER REQUIREMENTS
Operating voltage ............................................................................... 115/230 VAC ± 10 %, 50/60 Hz
Power consumption ................................................................................................................. 1760 VA
Battery operation (option /VDC) .................................................................................... 48 VDC, 38 A
OPERATING CONDITIONS
Cooling .......................................................................................................... forced air by internal fans
Service ...................................................................................................................... continuous 24/24h
Temperature range ........................................................................................................... -5° to +45° C
Humidity ................................................................................................................................ 95% max.
Max. Installation altitude .................................................................................................. 4000 m a.s.l.
WEIGHT AND SIZE
Weight ........................................................................................................................................... 48 kg
Dimensions (W x H x D) ..................................................................................... 483 x 136 x 522 mm
OPTIONS
External frequency setting (/C)
Stereo coder (/S)
Audio processor (/P)
Remote control (/R)
Battery operation (/VDC)
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3. INSTALLATION
To install the PM1000:
1. Connect an antenna or a dummy load to the RF output connector.
2. Verify the correct main supply voltage (230 VAC or 115 VAC).
3. Control that the main ON/OFF switch on the rear panel is in the OFF position (labelled “0”).
4. Connect the transmitter to the main power supply using the power cord included.
5. Switching ON the transmitter: on the front panel (Fig. 1.1) you will see the “MAINS” led ON.
6. Control that the “LOCK” led (Fig. 1.1) on the front panel lights up a few seconds after the power
is turned on.
7. Select the FWD setting, using the Measure select button (Fig. 1.1).
Adjust, looking at the front panel meter, the output power by means of the “PWR” potentiometer
on the front panel (Fig. 1.1).
WARNING: The transmitter can work properly within ± 10 % of the nominal main supply voltage
and is designed to support main supply spikes, although it is preferable to use the main voltage
stabilisers to reduce the risk of damage.
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3.1 FREQUENCY CHANGE
1. Lower the output power to its minimum level.
2. If the exciter is equipped with the “EXTERNAL FREQUENCY SETTING” option (/C) the
selection of the frequency is immediate using the front panel CONTRAVES (Fig. 1.1).
The weights of the contraves numbers are as follows;
3. If the transmitter has internal frequency setting, to change frequency open the cover of the Sintel
’96 modulator board (see Fig. 1.4) and use the internal dip-switches. The weight of the internal dip-
switches is indicated on the next page. To find the correct dip-switches configuration corresponding
to the needed FM channel, please refer to the following example with 98 MHz frequency.
4 - Put every dip-switches in the ON position.
5 - Select the OFF position for the dip-switch with the maximum weight, lower than or equal to the
frequency wanted (for example f0 = 98 MHz put on OFF the 81.92 MHz switch).
6 - Select 98 - 81.92=16.08 MHz, the minimum weight, lower than or equal to 16.08 MHz, is 10.24
MHz; now put off the corresponding switch.
7 - Select 16.08 - 10.24 = 5.84 MHz, the minimum weight, lower than or equal to 5.84 MHz, is 5.12
MHz, now put off the corresponding switch.
8 - Select 5.84 - 5.12 = 0.72 MHz, the minimum weight, lower than or equal to 0.72 MHz, is 0.64
MHz, then put off the corresponding switch.
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9 - Select 0.72 - 0.64 = 0.08 MHz, there is a weight equal to 0.08 MHz, so put in OFF position the
corresponding switch to complete the setting.
The final configuration is:
10 - Adjust the desired output power using the “PWR” front panel potentiometer.
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3.2 ADJUSTMENTS AND MEASURES
AF INPUTS DEVIATION ADJUSTMENT
For the Left and Right input signals (/S option) use the corresponding XLR female connectors on
the rear panel. The input impedance is 600 Ω.
The transmitter accepts, adjusting input trimmers, input signal levels from -6 dBm to +10 dBm for a
75 kHz peak deviation.
For Mono input signal (PM1000 without inner stereo generator) the input female XLR connector
have the same input levels than the stereo amplifier.
For MPX input signal (PM1000 without inner stereo generator) the BNC input connector, labelled
MPX (10 kΩ input impedance), accepts a 0 dBm for 75 kHz peak deviation input level.
For SCA signals (>53 kHz) use BNC input connectors (1 kΩ input impedance) (Fig. 1.2): the input
level for a correct deviation of the main carrier (≈1.25 kHz peak) is 2.2 Vpp. To adjust the peak
deviation of the main carrier use the “DEV” front panel potentiometer (Fig. 1.1): look at the front
panel meter and select the DEV measurement by means of the selection button “READINGS
SELECTOR” (Fig. 1.1).
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3.3 EXTERNAL CONTROL AND MEASURES
3.3.1 SYSTEM CHECK SECTION
See Fig. 1.1
On the front panel there is a section labelled “SYSTEM CHECK” which allows monitoring of all
the main functions and protections of the transmitter.
⇒ “ON” led: It shows the on/off state of the transmitter, thus the presence of a main power supply.
⇒ “OVERHEAT” led: It indicates that the overtemperature protection is on. This protection does
not need a RESET because it restores the normal working conditions automatically when the
temperature goes back to normal values.
⇒ “VSWR” led: It shows that the VSWR protection is active. This intelligent protection is
characterised by an automatic reset delayed by about 2-3 seconds to avoid the risk of accidental
intervention. This autoreset tries to resume to normal operation only 3-4 times, then turns off the
transmitter definitively.
⇒ “REMOTE SHUT-DOWN” led:
It is enable if the amplifier has the /R option.
When it is light on, shown that power output has zero worth because of a remote external
impulse.
⇒ “UNBAL” led:
It shows the unbalancing between the two AMP300 amplifier modules, thus an
equipment malfunction.
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3.3.2 MEASURES / CONTROLS SECTION
On the front panel (Fig. 1.1) there is a 40 leds meter bar (see Fig. 1.1) which displays the most
important parameters of the transmitter. The push-button labelled “MEASURE SELECT” selects
the measure type, as indicated by one of the leds below the bar.
You can visualise 6 parameters:
- FWD measure displays the output power (f.s. 1200W).
- REFL measure displays the reflected power (f.s. 120W).
- Vpa measure displays the bias of final transistors (f.s. 60V).
- Ipa measure displays the absorbed current of final transistors (f.s. 60A).
- DEV measure displays the peak deviation of modulated carrier (f.s. 200KHz).
- L/R measure displays the input audio level. (the meter bar is split in two parts, one for each
audio channel).
⇒ “LOCK” led:
shows the correct lock of the frequency synthesis circuit (PLL) on the modulator
board.
⇒ “STEREO” led:
shows the use of the internal stereo generator board (if present). This led is
related to the switch (Fig. 1.1) labelled “STEREO/MONO” which allows selection of the type of
signal to be modulated. The mono signal is obtained by a semi-sum of the left and the right
signals for the PM1000. If the internal stereo generator board is not present, the switch
mentioned above and the corresponding LED are unused.
⇒ “REMOTE” led:
indicates if the operation of the transmitter can be remote controlled. This
selection is made using the switch “ REMOTE/MANUAL”. This switch and the relative led will
be unused if the transmitter is not equipped with the remote control board option.
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Fig.3.1 – PM1000 GENERAL BLOCK DIAGRAM
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3.4 GENERAL BLOCK DIAGRAM DESCRIPTION
The general block diagram (see Fig.3.1) consists of the following blocks:
A) PM1000 RF Amplifier Stage delivers the 1050W output power.
It is realised by means of the following modules:
1) AMP30 (DB 0110_010A) preamplifiers/driver stage for delivering about 24 W RF power.
2) Input splitter (DB 9701_001+DB 9702_007) that divide the 24 W in four equal parts to driving
the four AMP300 final amplifiers.
3) Four AMP300 300 W MOSFET technology amplifiers (DB 9812_001).
4) Output coupler (DB 9702_008+9701_002A) for combining the four 300W stage outputs and to
obtain the full output power.
5) Output low-pass filter (DB 9901_001) and directional coupler (DB 9901_005) for
spurious and harmonic filtering and for forward and reflected output power monitoring.
B) Protection and control board (DB 9601-002) for monitoring and controlling all principal
transmitter parameters.
C) PM 1000 Power Supply Stage. For driving the RF section there is a mains switching board,
giving the correct power supply (45V) for each 300W RF amplifiers. An other switching module
(DB 0206_090) is dedicated for protection and control board, meter stage, Modulator board,
AMP30 Driver stage and all optional boards.
D) PM1000 Meter stage display on a 40 LED scale all major transmitter parameters.
E) SINTEL 96 modulation board allows a high quality direct carrier modulation accepting a
composite stereo (MPX) coming from Stereo encoder (/S option) or a mono input signal with up to
3 SCA subcarriers (for example RDS, ARI, ...).
F) Stereo encoder board (/S option) generates a composite MPX signal for the modulation board
from R and L audio channel.
G) Stereo audio processor (/P option) performs a high quality sound compression.
H) Remote control board (DB 9702-006).
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4. AMPLIFIER SECTION
4.1 GENERAL DESCRIPTION
The PM1000 amplifier stage is realised with a preamplifier/driver module (Fig. 4.2) and four 300 W
RF MOSFET amplifier modules (see Fig. 12.1). The input signal from the Sintel ‘96 is amplified to
about 24 W (through the AMP30 module) and then splitted (through a splitter board) in four equal
parts for driving the four AMP300 FM MOSFET amplifier modules. The output power of the four
AMP300 (about 250W) is then coupled (through a coupler board) and filtered by means of an
appropriate low pass filter.
At the output of the low pass filter there is a directional coupler for forward and reflected power
monitoring.
4.2 30 W PREAMPLIFIER/DRIVER STAGE
The amplifier stage is realized by the new 30W MOSFET amplifier board (DB 0110_010A). This
board is basically composed of four amplification WIDE BAND stages.
The first stage uses a BFQ19 transistor to amplify the input level. The second and the third
transistors are 2N4427. The last amplification stage uses a BLF245 MOSFET to obtain an output
RF power 30 W maximum.
The P3 trimmer (see Fig. 4.2) in the AMP30 board allows to adjust the mosfet bias current.
.An external panel trimmer and the P2 trimmer in the AMP30 board allows to adjust the
output power.
The AMP30 board is equipped with an initial 5-6 seconds delay to avoid accidental out of
band emissions in the initial PLL locking period.
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Fig. 4.1 - AMP30 PRE AMPLIFIER ELECTRICAL SCHEMATIC
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Fig. 4.2 - AMP30 PRE AMPLIFIER COMPONENT LAYOUT (DB 0110_010A)
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4.3 AMP30 PRE AMPLIFIER PARTS LIST
ITEM QUANTITY REFERENCE PART
_____________________________________________________________________________
2 1 C1 47uF 35V p=3.5mm φ=8mm
3 5 C2,C7,C9,C35,C59 100uF 25V p=2.5mm φ=6,5mm
4 7 C3,C4,C5,C23,C24,C39,C51 10nF X7R 1206
5 3 C6,C53,C65 10nF COG 1210
6 4 C11,C12,C36,C37 100pF COG 1206
8 1 C16 47pF TEKELEC 1210
9 4 C20,C32,C40,C42 10uF 25V p=2.5mm φ=5,5mm
10 2 C30,C21 100nF X7R 1206
11 4 C27,C28,C29,C33 1nF X7R 1206
12 3 C31,C34,C52 1nF COG 1206
13 1 C38 10pF TEKELEC 1210
14 1 C41 330pF COG 1206
15 2 C54,C44 1nF TEKELEC 1210
16 1 C45 33pF TEKELEC 1210
17 1 C50 100uF 35V p=3.5mm φ=8mm
18 1 C55 82pF TEKELEC 1210
19 1 C57 3p3F TEKELEC 1210
20 1 DZ1 5V1 ZENER SOD80
21 2 D2,D1 LL4148 DIODO MMELF
26 6 L1,L2,L5,L9,L11,L12 VK200 TRAD VK200SMD
27 1 L3 15nH SMD 1210
28 3 L6,L7,L10 CU x BOBINE IN ARIA
33 2 P2,P3 5KΩ SMD 1GRV 5x5mm
34 1 Q1 BFQ19 SMD SOT89
35 1 Q2 BDX53 TRAD TO220
36 1 Q3 2N3866 / 2N4427 TO205
37 1 Q4 2N4427 TRAD TO205
38 1 Q5 BLF245 SMD SOT123A
39 1 Q6 BC857 SMD SOT23
40 3 R1,RX,R0 0Ω 1/4W R4010
41 1 R2 100Ω SMD 1206
42 2 R14,R3 1K5Ω SMD 1206
43 1 R4 100Ω 2W P=16mm φ=4mm
44 1 R5 22KΩ SMD 1206
45 3 R6,R8,R42 1KΩ SMD 1206
46 1 R7 56Ω SMD 1206
47 1 R7A 47Ω SMD 1206
48 4 R10,R12,R15,R16 300Ω SMD 1206
49 1 R11 18Ω SMD 1206
50 1 R13 150Ω SMD 1206
51 1 R17 10Ω SMD 1206
52 3 R20,R21,R24 10KΩ SMD 1206
53 1 R22 220KΩ SMD 1206
54 1 R23 100KΩ SMD 1206
55 2 R43A,R43 220Ω SMD 1206
56 1 R44 2K7Ω SMD 1206
57 1 R59 220Ω 4W P=20mm φ=5mm
58 1 U1 LM7815 TRAD TO220
59 1 U2 NE555 SMD SO08
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4.4 AMP300 300 W MODULE AMPLIFIER
The amplifier is realized with MOS transistors, Philips BLF278 or equivalent.
The technical data (for class “C” operation) are the following:
- 87.5 - 108 MHz frequency range
- 43 Vds Supply voltage between drain and source
- 75% minimum efficiency (78% typical)
- 300 W Output Power with 17 dB minimum gain (18 typical)
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Fig. 4.3 - AMP300 AMPLIFIER ELECTRICAL SCHEMATIC
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Fig. 4.4 - AMP300 AMPLIFIER COMPONENT LAYOUT (DB 9812_001)
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4.5 AMP300 AMPLIFIER PARTS LIST
ITEM QUANTITY REFERENCE PART
___________________________________________________________________________________
1 1 CS1 DB971202 STAMPATO
2 1 CS2 DB9812_001 STAMPATO
3 1 C1 150pF CER
4 1 C2 56pF CER
5 2 C3,C8 100nF 200V TEKELEC
6 1 C10 5,6pF HQ TEKELEC
7 3 C5,C6,C7 1nF HQ300V TEKELEC
8 1 C9 1nF MQ TEKELEC
9 1 C4 10nF 200V TEKELEC
10 1 DZ1 3V9 ZENER
11 1 D1 1N4148
13 1 J2 C.S.9704_015 STAMPATO
15 1 L1 6 TURNS 17cm 0.8RS
16 1 L2 FERR2TUBE
17 1 Q1 BLF278
18 2 R1,R2 22K 1206 SMD
19 2 R3,R4 5K6 1206 SMD
20 1 R5 150K 1206 SMD
21 4 R6,R7,R8,R9 22R 4W
22 2 TP1,TP2 CPFXCS FASTON
23 1 TR1 2TUBEOTTx2cm+TEFLON RSx20cm
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Fig. 4.5 - INPUT SPLITTERS (DB 9701_001 + DB 9702_007)
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Fig. 4.6 - OUTPUT COUPLERS (DB 9702_008 +DB 9701_002A)
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Fig. 4.7 - OUTPUT LOW PASS FILTER (DB 9901_001)
Fig. 4.8 - DIRECTIONAL COUPLER (DB 9901_003)
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5. POWER SUPPLY STAGE
5.1 GENERAL DESCRIPTION
The PM1000 transmitter power supply is composed of the following elements:
• 1 mains switching board delivering 45V/60A in continuous operation. This module gives the
correct voltage to supply the MOSFET power amplifiers (DB 9812_001).
• 2 switching modules capable of ±12 VDC (6A max) and +24 VDC (10A max) to power supply
the Protection and control boards, meter stage, Sintel ’96 modulator board, AMP30 Driver stage
and all optional boards present.
The switching-mode power supply provides:
1. the efficiency is 80% higher hence provides a considerable reduction of the internal heating, thus
simplifying the cooling system;
2. a lower thermal and mechanical stress for associated components, such as transformer, diodes,
rectifier bridges is inflicted;
3. the power supply voltages at the output of the switching regulators are constant even in case of
wide main fluctuations (± 15 %).
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Fig. 5.1 – MAINS SWITCHING BOARD LAYOUT
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Fig. 5.2 – POWER SUPPLY 04011-001 ELECTRICAL DIAGRAM (1)
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Fig. 5.3 – POWER SUPPLY BOARD 04011-001 ELECTRICAL DIAGRAM (2)
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5.2 POWER SUPPLY BOARD 04011-001 PARTS LIST
Item Quantity Reference Part
________________________________________________________________________
1 50 T1,PG2,CV3,L6,C6,C7,C8, TAR TAR
R9,R14,JP20,JP22,D25,D26,
Q29,Q30,C49,C53,D82,D83,
D84,R85,D85,R86,D86,R110,
R112,C113,C117,C119,R159,
R225,R226,R227,R228,R229,
R234,R235,R240,R241,R246,
R247,R248,R249,R257,R260,
R261,R262,R263,R264,R265
2 1 CX1 220n CPU2263V005PM
3 4 CX2,CX3,CX4,C106 10n CP10N63V005PM
4 4 Cb1,Cb2,Cb3,Cb4 2.2n CP2N263V005PM
5 6 C1,C51,C59,C60,C111,C112 1u CC01U50V005PM
6 7 C4,C12,C13,C26,C43,C104, 0.1u CP0U163V005PM
C105
7 1 C5 470n CPU4763V005PM
8 2 C68,C9 330n X2 CXU33K2522P5M
9 1 C10 1u X2 CX01UK2527P5M
10 1 C14 47p CC47P50V005PM
11 1 C15 2.2u 400V CH2U20K427P5M
12 6 C16,C17,C18,C19,C20,C84 4n7 Y1 CY4N70K412P5M
13 2 C58,C21 1n CP01N63V005PM
14 2 C22,C77 10u 35V CV10U35V005DM
15 1 C38 10n 1kV CC10N01K010PM
16 2 C79,C39 0.1u 630V CP0U1K6322P5M
17 1 C41 220u 35V KVL2235V008DM
18 1 C50 1.5n CC1N550V005PM
19 2 C52,C54 2.2n CC2N20K1005PM
20 1 C55 330p CCN3350V005PM
21 1 C56 47n CC47N63V005PM
22 4 C57,C61,C66,C67 4.7u 35V CV4U735V004DM
23 1 C62 33n CP33N63V005PM
24 1 C63 3.3n CP3N363V005PM
25 2 C65,C64 470u/450 CVL47K45035DM
26 1 C69 1u 63V CP01U63V005PM
27 2 C80,C81 2.2n 2KV CC2N202K005PM
28 1 C92 220p CPN2263V005PM
29 2 C108,C109 470u 35V KVL4735V010DM
30 4 C114,C115,C116,C118 0.15u cp 100V ps5
31 31 DX1,D4,D6,D11,D12,D13, 1N4148 DP1N4148
D14,D16,D34,D36,D37,D40,
D41,D42,D43,D44,D45,D46,
D47,D51,D52,D53,D54,D55,
D56,D57,D58,D59,D63,D67,
D69
32 13 D3,D5,D48,D60,D73,D89, 18V DZ18V-0W5
D90,D91,D92,D93,D94,D95,
D96
33 1 D18 BA159 DPBA159
34 1 D19 BYV26C DPBYV26C
35 1 D38 ISL9R1560G2 DMISL9R1560G2
36 2 D49,D61 43V 1W DZ43V-1W
37 2 D50,D62 SB140 DPSB140
38 1 D65 BAT85 DPBAT85
39 1 D87 MUR 1640CT
40 1 FR1 04011-001-FR1 220G - FR1
41 5 JP1,JP6,JP17,JP26,JP27 STREEP1 CTST40PM0911D
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Item Quantity Reference Part
_________________________________________________________________________
42 1 JP2 STREEP2 CTST40PM0911D
43 1 JP4 HEADER 17
44 1 JP5 HEADER 4
45 2 JP11,JP10 dado a gabbia MR014504
46 1 JP16 MOLEX 2PIN CT05281321021
47 6 JP18,JP19,JP21,JP29,JP30, FASTON 90° MRFASTON1790G
JP31
48 1 JP23 HEADER 14
49 1 JP28 SAURO 2VIE MRMSE02P00V
50 1 K2 12V/10A RL012DC10A02S1
51 2 L1,L8 VE DL020406
52 2 L3,L2 220G - L1 114uH/11A
53 2 L4,L5 220G - L3 113uH/25A
54 1 L7 RO DL020404
55 2 OP3,OP2 CNY17-3 OCCNY17-3
56 1 PG1 GBPC3510W PRFB3510W
57 1 Q2 BD140 TRBD140
58 1 Q3 STP4NB80 STP4NB80
59 2 Q6,Q25 BC237 TRBC237
60 1 Q10 VN2222L PMVN2222L
61 4 Q11,Q12,Q13,Q14 HGTG20N60A4D IGHGTG20N60A4D
62 2 Q15,Q16 HGTG20N60A4 IGHGTP20N60A4
63 1 Q17 BC327 TRBC327
64 1 Q18 ZTX653 TRZTX653
65 4 Q19,Q20,Q22,Q23 ZTX953 TRZTX953
66 2 Q24,Q21 IRFD110 PMIRFD110
67 3 RV1,RV2,RV3 S14K275 VS1427571075J
68 1 RX1 22K RC022KW12J
69 1 R1 365K RM365KW25F
70 1 R2 348K RM348KW25F
71 1 R4 470K 1 RM470K01WK
72 1 R5 6.8K 0.5 RC06K80W5J
73 1 R6 15K 1/8 RC015KW12J
74 1 R7 150K RC150KW25J
75 1 R8 3K90 1/8 RM03K9W12F
76 1 R10 1K8 1/8 RC01K8W12J
77 1 R11 1K PTO001K010B
78 6 R12,R130,R131,R140,R141, 1K 1/8 RC001KW12J
R164
79 1 R15 1.3K 1/8 RM01K3W12F
80 2 R16,R17 10 RC010RW25J
81 6 R18,R75,R76,R77,R78,R79 10K RC010KW25J
82 1 R19 47 7 RF047R07WK
83 2 R118,R24 47K 1/8 RC047KW12J
84 3 R25,R100,R101 3K3 1/8 RC03K3W12J
85 4 R26,R98,R158,R251 10K 1/8 RC010KW12J
86 1 R27 150K 1/8 RC150KW12J
87 1 R28 1M RC001MW25J
88 1 R63 0.68 1 RM0R6801WK
89 1 R65 6.8K 1/8 RC06K8W12J
90 9 R66,R74,R122,R128,R129, 100 1/8 RC100RW12J
R133,R138,R139,R143
91 1 R73 220K 1/8 RC220KW12J
92 3 R80,R223,R224 56K 2 RM056K02WK
93 2 R93,R92 270K RC270KW25J
94 1 R94 12 RC012RW25J
95 3 R99,R103,R175 2K2 1/8 RC02K2W12J
96 2 R111,R102 13K 1/8 RM013KW12F
97 1 R104 100K 1/8 RC100KW12J
98 1 R105 270 RC270RW25J
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Item Quantity Reference Part
__________________________________________________________________________
99 2 R106,R123 4K7 1/8 RC04K7W12J
100 2 R252,R109 27K 1/8 RC027KW12J
101 1 R119 178K RM178KW25F
102 1 R120 200K RM200KW25F
103 1 R121 2.37K 1/8
104 4 R124,R125,R134,R135 33 RC033RW25J
105 4 R126,R127,R136,R137 2.2 RC02R2W25J
106 2 R142,R132 2K2 0.5 RC02K20W5J
107 1 R152 3.3K 1/8 RC03K3W12J
108 2 R156,R157 47 4 RC047R04WK
109 1 R160 680 1/8 RC680RW12J
110 1 R167 330 1/8 RM330RW12F
111 1 R168 820 1/8
112 2 R169,R170 1.8K 1/8 RC01K8W12J
113 1 R199 39 RC039RW25J
114 1 R219 22 RC022RW12J
115 12 R230,R231,R232,R233,R236, 10m 1 RA0R0101WJ
R237,R238,R239,R242,R243,
R244,R245
116 1 R250 2.7K 1/8 RC02K7W12J
117 2 R259,R258 56K 1/8 RC056KW12J
118 1 R266 680 2 RM680R02WK
119 1 TA1 220G - TA1 1 : 56
120 1 TA2 LEM LA 55-P
121 1 T2 220G - T2 E 32/16/9
122 2 T4,T3 220G - T3 r1 EFD 15
123 2 U14,U1 TL431 VRTL431N
124 12 U2,U3,U12,U13,U20,U21, BOLLA LS
U24,U26,U27,U30,U32,U33
125 1 U7 LM7812CT VRLM7812CT
126 1 U11 ML4826CP2 CIML4826CP2
127 1 U29 LM393 CILM393
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5.3 RS-75-24 SWITCHING POWER SUPPLY
This switching power supply board converts the input voltage from the mains to +24VDC to feed
the boards inside the CLU unit.
RS 75-24 CHARACTERISTICS
OUTPUT
DC voltage 24V
Rated current 3.2A
Current range 0 – 3.2A
Rated Power 768W
Ripple & noise (max) 120mVp-p
Voltage ajd range 22 – 27.6V
Voltage tolerance ± 1.0%
Line regulation ± 0.5%
Load regulation ± 0.5%
Setup, rise, hold time 500ms, 30ms, 50 ms/230VAC
1200ms, 30ms, 12ms/115VAC at full load
INPUT
Voltage range 88 – 264 VAC
Frequency range 47 – 63 Hz
Efficiency 85%
AC current 2A/115VAC 1.2A/230VAC
Inrush current (max) Cold start 40A/230VAC
Leakage current <2mA/240VAC
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PROTECTION
Overload 110 - 150% rated output power
Over voltage 27.6 – 32.4 V
Protection type: Hiccup mode, recovers
automatically after fault condition is removed
ENVIRONNEMENT
Working temperature -25 ÷ +70°C
Working humidity 20 – 90 % RH not condensing
Storage temperature, humidity -40 ÷ +85 °C, 10 ÷ 95% RH
Temp. Coefficient ±0.03%/°C (0÷50°C)
Vibration 10 – 500 Hz, 5G 10min/1cycle, period for 60 min.
each along X,Y,Z axes
OTHERS
MTBF 265 Khrs min
Dimension 129/97/38 mm (L/W/H)
Weight 0.41 kg
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5.4 0601-008 POWER SUPPLY BOARD
The protection and measure boards are supplied with an independent power supply boards that
furnish the +/- 12 Volts and +/- 5 Volts to the two boards. It is positioned near the display board.
Fig. 5.4 – POWER SUPPLY FOR MEASURE BOARD LAYOUT (DB 0601_008)
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Fig. 5.5 – POWER SUPPLY FOR MEASURE BOARD ELECTRICAL DIAGRAM
IN
GND
OUT
U4
7905
79XX TO220
L4
150µH
IND_TOR_P
C23
100nF
CC_B
-5V
+
C4
470µF 63V ROE
CE_D
R7
3K3
R1/4W
+12V
R4
9K1 1%
R1/4W
R8
2K2
R1/4W
U1
L4971
DIP8
152
4
6 387
GND
VCC
SS_INH
OUT
BOOT OSCFBCOMP
+
C16
100µF 25V
CE_E
+
C13
330µF 35V
CE_B
R51KTRI M_PTH_ V
CN3
MSQ03001
MSQ03001
123
R11
1K
R1/4W
R9
8K2
R1/4W
C18
100nF
CC_B
+5V
R2
10K
R1/4W
-12V
1
Rubens R af f a gnat o
<Name2>
<Date2>
<Code>
11
30-12-2005
Alimentat or e per s c heda misure
DB 0601_008
Name
Date
Rev Sheet of
Project N am e:
Note:
Product Code:
Doc.:
Drawing Approved
+5V
C11
3.3nF
CP_A
+48V
D5
SB360
D2
C14
220nF
CP_B
-12V -12V
+12V
+
C19
10µF 35V
CE_A
+
C22
10µF 35V
CE_A
C10
220nF
CP_A
C20
100nF
CC_B
L3
150µH
IND_TOR
CN2
MSQ03001
MSQ03001
123
+
C12
470µF 63V ROE
CE_D
D3
SB360
D2
D8
1N5819
1N5819
+
C2
1µF 50V
CE_A
C21
100nF
CC_B
IN
GND
OUT
U3
7805
78XX TO220
D7
LED VERDE
LED_5MM
+48V
R3
2K2
R1/4W
D2
LED VERD E
LED_5MM
R6NCR1/4W
L2
150µH
IND_TOR_P
C1
3.3nF
CP_A
C9
22nF
CP_A
R10 1K
TRIM_PTH_V
+
C15
100µF 25V
CE_E
+12V
CN1
MSQ02001
MSQ02001
1
2
C8
220pF
CC_A
C5
220nF
CP_B
D4
SB360
D2
+
C17
100µF 25V
CE_E
R12NCR1/4W
+
C6
330µF 35V ROE
CE_B
U2
LM2591
1
5
2
4
3
Vin
ON/OFF
Out
Feedback
GND
+
C3
100µF 25V
CE_E
L1
270µH
IND_TOR
C7
220nF
CP_B
D6
1N4007
1N4007
D1
SB360
D2
R1
20K
R1/4W
+48V
-5V
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5.5 POWER SUPPLY PART LIST
ITEM QUANTITY REFERENCE PART
1 1 CN1 MSQ02001 MSQ02001
2 2 CN3,CN2 MSQ03001 MSQ03001
3 2 C1,C11 3.3nF CP_A
4 1 C2 1µF 50V CE_A
5 4 C3,C15,C16,C17 100µF 25V CE_E
6 2 C12,C4 470µF 63V ROE CE_D
7 2 C14,C5 220nF CP_B
8 1 C6 330µF 35V ROE CE_B
9 1 C7 220nF CP_B
10 1 C8 220pF CC_A
11 1 C9 22nF CP_A
12 1 C10 220nF CP_A
13 1 C13 330µF 35V CE_B
14 4 C18,C20,C21,C23 100nF CC_B
15 2 C19,C22 10µF 35V CE_A
16 4 D1,D3,D4,D5 SB360 D2
17 2 D7,D2 LED VERDE LED_3MM
18 1 D6 1N4007 1N4007
19 1 D8 1N5819 1N5819
20 1 L1 270µH IND_TOR
21 2 L2,L4 150µH IND_TOR_P
22 1 L3 150µH IND_TOR
23 1 R1 20K R1/4W
24 1 R2 10K R1/4W
25 2 R3,R8 2K2 R1/4W
26 1 R4 9K1 1% R1/4W
27 2 R5,R10 1K TRIM_PTH_V
28 1 R7 3K3 R1/4W
29 1 R9 8K2 R1/4W
30 1 R11 1K R1/4W
31 1 U1 L4971 DIP8
32 1 U2 LM2591 TO-220-5PIN
33 1 U3 7805 78XXTO220
34 1 U4 7905 79XXTO220
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6. MODULATOR STAGE
6.1 GENERAL DESCRIPTION
The new modulator board SINTEL ’96 allows a high quality direct carrier modulation accepting a
composite stereo (MPX) or a mono input signal with up to 3 SCA subcarriers (for example RDS,
ARI, ...).
The mono input signal is filtered by a 7th order elliptic filter with a very flat response (20Hz to
15kHz with ± 0.25 dB) and an optimum out of band attenuation (>50 dB for frequencies higher than
19 kHz), then the signal is amplified (or attenuated) and passed to the VCO oscillator for the FM
carrier modulation. The VCO is controlled by a digital PLL circuit with a high stability quartz
reference to obtain a very stable synthesised oscillation: the frequency setting is customisable using
on board dip-switches (the minimum step size is 10 kHz).
The composite stereo signal and the SCA subcarriers are just amplified or attenuated by the correct
modulation depth adjustment before going through the VCO stage: the stereo performances of
SINTEL ’96 are excellent, (stereo separation >60 dB from 20Hz to 15 kHz, SNR > 80 dB).
Before the VCO stage, an adjustable and bypassable deviation limiter prevents the FM carrier from
an excessive modulation depth and adjacent channel interference according to all the international
standards (CCIR, FCC).
Furthermore, an automatic locking circuit enables the output modulated signal of SINTEL ’96 only
when the internal PLL is locked properly, in order to avoid unwanted emissions.
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6.2 SINTEL ‘96 MODULATOR BOARD
Fig. 6.1 - MODULATOR BOARD GENERAL ELECTRICAL SCHEMATIC
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Fig. 6.2 - PLL STAGE ELECTRICAL SCHEMATIC
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Fig. 6.3 - VCO STAGE ELECTRICAL SCHEMATIC
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Fig. 6.4 - L.F. STAGE ELECTRICAL SCHEMATIC
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Fig. 6.5 - L.F.2 STAGE ELECTRICAL SCHEMATIC
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Fig. 6.6 - FILTER STAGE ELECTRICAL SCHEMATIC
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Fig. 6.7 - MODULATOR BOARD COMPONENT LAYOUT (DB 9604-010)
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6.3 MODULATOR BOARD PARTS LIST
ITEM QUANTITY REFERENCE PART
__________________________________________________________________
1 1 CN1 SMB SMB DA STAMPATO
2 2 CN3,CN2 AMP4
3 18 C1,C16,C18,C25,C26,C36, 100n POLY
C37,C84,C94,C95,C100,
C101,C108,C111,C114,C116,
C118,C119
4 1 C2 15p
5 1 C3 10-60p
6 5 C4,C5,C8,C12,C21 10n POLY
7 2 C6,C7 4n7 POLY
8 3 C9,C14,C102 1u POLY
9 9 C10,C19,C59,C61,C63,C85, 10n CER
C86,C120,C121
10 1 C13 1u POLY
11 14 C15,C17,C23,C33,C39,C40, 1n CER
C41,C42,C43,C44,C45,C46,
C47,C48
12 6 C22,C31,C79,C99,C115, 10u ELETT.25V
C117
13 5 C27,C28,C29,C82,C83 1u ELETT.25V
14 7 C30,C66,C67,C70,C105, 10p CER
C112,C122
15 1 C32 47u elettrol. tantalio
16 1 C34 33p CER
17 1 C35 22p CER
18 2 C51,C49 47p CER
19 8 C50,C52,C56,C58,C60,C62, 100p CER
C109,C110
20 2 C53,C71 330n poly
21 1 C57 4p7 cer
22 2 C64,C65 100u 25V
23 3 C69,C91,C92 100n cer
24 8 C72,C73,C75,C77,C80,C96, 3n3 CER
C97,C98
25 1 C87 220p CER
26 3 C88,C89,C90 4n7
27 2 C126,C93 100p
28 1 C103 100n CP1
29 1 C106 100n
30 1 C107 68p CER
31 1 C113 1p CER
32 1 C125 22p
33 1 C127 1u
34 1 C128 10n multistrato
35 7 D3,D12,D13,D15,D16,D17, 1N4148
D18
36 4 D4,D6,D9,D10 5V1 ZENER
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ITEM QUANTITY REFERENCE PART
__________________________________________________________________
37 1 D5 LED
38 2 D8,D7 BB809
39 1 JP6 JUMPER JUMPER X2
40 2 JP8,JP7 JUMPER
41 1 J1 CON20
42 2 J4,J3 CON14
43 1 L1 INDUCTOR
44 2 L2,L15 100n INDUTT ASSIALE
45 1 L3 10R 1/2W 1/2 W
46 1 L9 10uH
47 1 L10 10uH R1
48 3 L11,L12,L14 10uH INDUTT.
49 1 L13 10uH INDUTT.
50 2 Q2,Q3 BC557
51 5 Q4,Q5,Q6,Q7,Q8 BFY90
52 1 Q9 BC307
53 1 Q10 BC237
54 1 R? 22K 1/8W
55 4 R1,R2,R3,R4 27K4 1% RES 1/8W
56 1 R5 48K7 1% RES 1/8W
57 2 R7,R6 27K RES 1/8W
58 1 R8 22K RES 1/8W
59 1 R9 48K7 1%
60 3 R10,R24,R73 1M RES 1/8W
61 1 R11 50K Trimmer multigiri
62 5 R12,R34,R38,R42,R108 47K RES 1/8W
63 1 R15 2.2K RES 1/8W
64 14 R16,R18,R22,R56,R74,R103, 10K RES 1/8W
R106,R130,R131,R132,R133,
R134,R135,R136
65 1 R17 560 RES 1/8W
66 2 R20,R29 1K5 RES 1/8W
67 4 R21,R31,R35,R124 470 RES 1/8W
68 1 R23 6.8K RES 1/8W
69 14 R25,R37,R39,R41,R54,R58, 1K RES 1/8W
R60,R75,R79,R80,R111,
R118,R119,R121
70 2 R26,R69 5k6 RES 1/8W
71 1 R27 330 RES 1/8W
72 1 R28 15k RES 1/8W
73 4 R30,R36,R40,R62 33k RES 1/8W
74 2 R33,R32 100 RES 1/8W
75 1 R43 680R 1/8W
76 2 R45,R44 31K6 1% 1/4W
77 2 R47,R46 10K 1% 1/4W
78 2 R48,R49 169K 1% 1/4W
79 2 R138,R50 5K6
80 2 R51,R137 1M
81 1 R52 3K3 RES 1/8W
82 4 R53,R57,R71,R72 4K7 RES 1/8W
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ITEM QUANTITY REFERENCE PART
__________________________________________________________________
83 3 R55,R59,R61 180K RES 1/8W
84 2 R66,R110 4K7 TRIM MONOGIRO
PICCOLO
85 2 R109,R68 560R RES 1/8W
86 1 R77 10K TRIMMER MULTIGIRI
87 1 R78 20K trim
88 1 R81 560R 1% 1/4W
89 1 R82 301k RES_1/4W_1%
90 1 R83 3k57 RES_1/4W_1%
91 1 R84 536R RES_1/4W_1%
92 6 R85,R91,R97,R115,R116, 3k01 RES_1/4W_1%
R117
93 1 R87 3k3 RES_1/8W
94 2 R88,R94 2k trim multi
95 1 R89 4k64 RES_1/4W_1%
96 1 R90 2k74 RES_1/4W_1%
97 2 R93,R98 2K2 RES_1/8W
98 1 R95 4k02 RES_1/4W_1%
99 1 R96 1k91 RES_1/4W_1%
100 1 R100 2k RV64W
101 1 R101 2k61 RES_1/4W_1%
102 1 R102 301k 1/4W 1%
103 1 R104 2K2 RES 1/8W
104 1 R105 2K2
105 1 R107 10K TRIM MONOGIRO
PICCOLO
106 1 R112 68K RES 1/8W
107 1 R113 12K1
108 1 R114 9K53 RES 1/8W
109 1 R120 10R RES 1/8W
110 1 R122 68 RES 1/8W
111 1 R123 10 RES 1/8W
112 1 R125 47 RES 1/8W
113 1 R126 220R RES 1/8W
114 1 R128 100R RES 1/8W
115 1 R129 330R RES 1/8W
116 2 SW2,SW1 DIP SW 8
117 7 TP1,TP4,TP5,TP6,TP7,TP8, TP
TP10
118 1 U1 MC145152
119 2 U2,U19 TL082
120 1 U3 78L05
121 1 U4 MB501L
122 1 U6 78L08
123 4 U10,U16,U17,U18 TL084
124 1 U15 74HC14
125 1 Y1 2.56MHz
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7. PROTECTION BOARD
Fig. 7.1 - PROTECTION BOARD N°1 GENERAL SCHEMATIC
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Fig. 7.2 - GATES CONTROL STAGE ELECTRICAL SCHEMATIC
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Fig. 7.3 - UNBALANCING STAGE ELECTRICAL SCHEMATIC
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Fig. 7.4 - POWER LIMITING STAGE ELECTRICAL SCHEMATIC
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Fig. 7.5 - TEMPERATURE PROTECTION STAGE ELECTRICAL SCHEMATIC
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Fig. 7.6 - PROTECTION BOARD N°1 COMPONENT LAYOUT (DB 9702-004)
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7.1 PROTECTION BOARD N°1 PART LIST
ITEM QUANTITY REFERENCE PART
____________________________________________________________________________
1 67 C1,C2,C3,C4,C5,C6,C7,C8, 1n CER
C9,C10,C11,C12,C13,C14,
C15,C16,C17,C18,C25,C26,
C28,C29,C30,C31,C32,C34,
C35,C36,C70,C71,C72,C74,
C75,C76,C80,C84,C88,C102,
C105,C106,C107,C108,C109,
C114,C115,C116,C117,C118,
C119,C120,C121,C123,C124,
C125,C126,C127,C128,C129,
C130,C131,C132,C133,C134,
C135,C136,C137,C138
2 10 C19,C20,C21,C22,C37,C38, 100n POLY
C39,C40,C68,C69
3 3 C27,C33,C73 1u POLY
4 1 C122 1n POLY
5 14 D5,D6,D7,D8,D9,D10,D11, 1N4148
D13,D14,D21,D23,D24,D25,
D26
6 2 FIS1,FIS2 FIS
7 1 JP1 JUMPERx2 JUMPERx2
8 2 JP2,JP3 JUMPERx3 JUMPERx3
9 1 J1 CON24 CON AMP 24
10 1 J2 CON20 CON FLAT 20
11 7 J3,J4,J5,J6,J7,J8,J9 PINSTRIP Fx2 PINSTRIP Fx2
12 2 Q2,Q3 BC237
13 4 R5,R6,R7,R22 33K RES 1/8W
14 20 R8,R9,R10,R11,R12,R13, 10K RES 1/8W
R14,R15,R16,R17,R18,R19,
R21,R24,R26,R119,R151,
R152,R153,R154
15 7 R20,R27,R28,R35,R43,R116, 4K7 RES 1/8W
R124
16 4 R23,R40,R47,R121 5K TRIM MULTIG.
17 2 R25,R127 1K RES 1/8W
18 4 R34,R36,R42,R44 10K RES 1/4W 1%
19 2 R87,R37 3K3 RES 1/4W
20 3 R38,R46,R130 1M RES 1/8W
21 1 R39 5K62 RES 1/4W 1%
22 3 R41,R48,R117 1K RES 1/4W 1%
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ITEM QUANTITY REFERENCE PART
________________________________________________________________________
23 3 R45,R128,R129 1K RES 1/4W
24 1 R53 20K RES 1/4W 1%
25 2 R118,R159 2K2 RES 1/4W
26 1 R120 8K66 RES 1/4W 1%
27 1 R122 3K3 RES 1/8W
28 1 R123 22K RES 1/8W
29 1 R125 15K RES 1/8W
30 1 R126 47K RES 1/8W
31 3 U1,U2,U3 TL084
32 1 U9 79L05
33 1 U10 TL082
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Fig. 7.7 - PROTECTION BOARD N°2 GENERAL SCHEMATIC
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Fig. 7.8 - PROTECTION STATUS STAGE ELECTRICAL SCHEMATIC
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Fig. 7.9 - POWER SUPPLY STAGE ELECTRICAL SCHEMATIC
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Fig. 7.10 - MEASURES ADJ. STAGE ELECTRICAL SCHEMATIC
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Fig. 7.11 - LED INDICATIONS STAGE ELECTRICAL SCHEMATIC
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Fig. 7.12 - PROTECTION BOARD N°2 COMPONENT LAYOUT (DB 9703-011)
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7.2 PROTECTION BOARD N°2 PART LIST
ITEM QUANTITY REFERENCE PART
______________________________________________________________
1 2 C54,C132 10U ELETT.50V
2 10 C55,C92,C93,C94,C98,C110, 1N CER
C111,C112,C113,C131
3 7 C56,C57,C64,C128,C129, 100U ELETT.25V
C133,C134
4 1 C58 22U ELETT.63V
5 5 C59,C60,C62,C130,C135 10N POLY
6 2 C61,C127 100P CER
7 6 C65,C66,C82,C83,C103, 100N POLY
C104
8 4 C77,C81,C85,C89 10U ELETT.25V
9 4 C95,C96,C97,C99 1U POLY
10 6 D15,D17,D18,D19,D20,D22 LED LED3MM
11 2 D16,D27 1N5819 DIODO
12 4 FIS1,FIS2,FIS3,FIS4 FIS
13 3 J3,J4,J5 PINSTRIP MX2 PINSTRIP MX2
14 2 L1,L9 100U INDUTT
15 6 L3,L4,L5,L6,L7,L8 150U INDUTT
16 5 Q1,Q4,Q5,Q6,Q7 BC237
17 4 R29,R50,R52,R133 1M RES 1/8W
18 8 R30,R49,R51,R132,R140, 1K RES 1/8W
R144,R145,R150
19 3 R88,R89,R90 1K5 RES 1/4W
20 1 R91 100R RES 4W
21 1 R92 1K54 RES 1/4W 1%
22 1 R93 16K9 RES 1/4W 1%
23 10 R95,R96,R97,R98,R99,R100, 1K TRIM RO
R135,R136,R137,R138
24 9 R102,R141,R142,R147,R148, 22K RES 1/8W
R155,R156,R157,R158
25 2 R103,R111 1K RES 1/4W
26 4 R104,R105,R106,R109 150K RES 1/8W
27 2 R107,R108 15K RES 1/8W
28 4 R110,R112,R113,R131 4K7 RES 1/8W
29 3 R114,R115,R134 1K2 RES 1/4W
30 4 R139,R143,R146,R149 47K RES 1/8W
31 1 R160 1K RES 1/4W 1%
32 1 R161 8K66 RES 1/4W 1%
33 4 R162,R163,R164,R165 1R RES 1/4W
34 2 U11,U4 TL084
35 2 U7,U12 UA78S40
36 2 U8,U13 LT1054
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8. METER STAGE
8.1 GENERAL DESCRIPTION
The meter stage is built using two boards:
The ST62T25 microprocessor board DB 9903_040
The display board DB 9903_050 is composed of forty LED bargraph display.
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Fig. 8.1 – METER BOARD DB 0007_040 ELECTRICAL SCHEMATIC
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Fig. 8.2 - METER BOARD DB 0007_040 COMPONENT LAYOUT
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Fig. 8.3 - METER BOARD DB 0007_050 ELECTRICAL SCHEMATIC
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Fig. 8.4 - METER BOARD DB 0007_050 COMPONENT LAYOUT
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8.2 METER BOARDS PARTS LIST
ITEM QUANTITY REFERENCE PART
1 16 C1,C8,C9,C10,C11,C12, 1nF CER. P.5mm
C13,C14,C15,C21,C23,
C24,C30,C31,C32,C33
2 2 C22,C2 1uF 50V P.2.5mm
3 1 C3 10uF 25V P 2.5mm
4 5 C4,C16,C19,C20,C25 100nF MUL P.5mm
5 2 C5,C6 22pF P 2.5mm
6 1 C7 1uF POL P 5mm
7 9 DL1,DL2,DL3,DL4,DL5, LED V D.3mm
DL6,DL7,DL8,DL9
8 4 D1,D2,D3,D4 1N4148 DIODO
9 2 JP1,JP2 JUMPER STRIP2M+PONTIC
10 1 JP10 STRIP7F
11 1 JP11 STRIP7M
12 1 JP20 STRIP5M
13 1 JP21 STRIP5F
14 1 JP30 STRIP12F
15 1 JP31 STRIP12M
16 3 J1,J2,J3 CNM20V
17 1 J4 CNM14V
18 1 J6 AMP4
19 1 J7 CNM10V
20 3 L1,L2,L3 10uH
21 1 P1 1K TRIM RS186-968
22 1 P2 10K TRIM RS186-946
23 3 P3,P4,P5 10K TRIM 1GRO
24 2 Q2,Q1 BC547 TRANSISTOR
25 6 Q3,Q4,Q5,Q6,Q7,Q8 BC517 DARLINGTON
26 6 RR1,RR3,RR4,RR5,RR6, 8X47R+ C SIL
RR11
27 2 R0,R1 47R 1W
28 1 R2 4M7R 1/4W NON MONTARE CON
RISUONATORE CERAMICO
29 1 R3 47KR 1/4W
30 3 R4,R5,R8 4K7R 1/4W
31 9 R9,R10,R12,R13,R16, 1KR 1/4W
R17,R18,R36,R40
32 9 R11,R14,R19,R20,R21, 10KR 1/4W
R22,R34,R38,R42
33 1 R15 680R 1/2W
34 2 R30,R32 2K2R 1/4W
35 2 R31,R33 33KR 1/4W
36 3 R35,R39,R41 100KR 1/4W
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ITEM QUANTITY REFERENCE PART
__________________________________________________________________________________________
37 1 R37 22KΩ 1/4W
38 1 SW1 PULSMOZART
39 2 S1,S2 SLITTA C&K
40 1 U1 ZOCCOLO 28 LARGO (ST6225)
41 1 U2 I.C.ULN2803 or TD72083
42 1 U3 I.C. 4028
43 4 U4,U5,U6,U7 LEDBAR DC10GWA KINGBRIGTH
44 1 U8 I.C.TL084
45 1 U9 I.C.74HC32
46 1 U10 78L05
47 1 Y1 RISUONATORE CER.4MHz
QUARZO 4MHz
48 1 CS1 STAMPATO DB0007_040
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9. IN-AUDIO BOARD
Fig. 9.1 - IN-AUDIO BOARD ELECTRICAL SCHEMATIC
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Fig. 9.2 - IN-AUDIO BOARD COMPONENT LAYOUT (DB 9909_010)
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9.1 IN-AUDIO BOARD PARTS LIST
ITEM QUANTITY REFERENCE PART
________________________________________________________
1 4 C1,C3,C5,C7 100pF CER.
2 3 C2,C4,C6 4n7F POL.
3 5 JP1,JP2,JP3,JP4,JP5 STRIP3M
4 1 J1 CNM20V
5 2 J2,J3 CNM14V
6 3 J4,J10,J20 CNM10V
7 8 J5,J6,J7,J8,J11,J12,J13,J14 BNC90CS
8 4 L1,L2,L3,L4 10uH
9 2 PR,PL XLRF90CS
10 2 RL,RR 5K 10GROP
11 1 R1 470R 1/4W
12 1 TMPX 10K 10GROP
13 3 TSC1,TSC2,TSC3 1K 10GROP
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9.2 IN-AUDIO BOARD JUMPERS SETTING
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10. TRANSMITTER OPTIONS
The /C option if request is present on the front panel and permits to change the transmitting
frequency without open the equipment.
The /S option has a built-in digital stereo coder with stereo separation in excess of 65 dB and a SNR
of more than 80 dB. The /P option includes a stereo audio processor with a wide range compression
threshold, attack and release time adjustments and full compatibility with digital audio mixing
consoles. The /R option consists of full remote control capability with remote adjustments and
checks for all main parameters: power output adjustment, on/off, protections reset, forward and
reflected power measure, frequency deviation measure and alarms status. The /FSK option makes
the PM 1000 transmitter fully compatible with the FCC automatic identification system. The /VDC
option provides battery operation.
In this manual are included the most requested option from the customers.
10.1 EXTERNAL FREQUENCY CONTROL (/C Option)
On the synthesized board the dip-switches are changed with a 20 pin connector, so that it is
possible connect with a flat type cable this circuit (that manage PLL) to a microprocessor.
The frequency change is fast, because it is only necessary put directly the frequency using the
external frequency control (contraves) on the front panel.
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Fig. 10.1 - EXTERNAL FREQUENCY CONTROL ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 10.2 - EXTERNAL FREQUENCY CONTROL COMPONENT LAYOUT (DB 9308-020)
10.2 EXTERNAL FREQUENCY CONTROL PARTS LIST
ITEM QUANTITY REFERENCE PART
______________________________________________________
1 1 CN1 CONN 20
2 1 CN2 CONN 10
3 2 C2,C1 10p cer
4 3 C3,C4,C6 10u
5 3 C5,C7,C8 100n pol
6 21 D1 - D22 1N4148
7 1 D21 LED d3
8 9 JP1,JP2,JP3,JP4,JP5, jumper
JP6,JP7,JP8,JP9,JP10
9 4 R1,R2,R3,R4 47K
10 1 R5 1k
11 1 R6 2M2
12 2 R8,R7 10k
13 5 S1,S2,S3,S4,S5 CONTRAVES
14 1 U1 78L05
15 1 U2 MC68HC705C8P
16 1 X1 2-4 MHz
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11. STEREO ENCODER BOARD (/S Option)
11.1 CHANNELS PRE- EMPHASIS SETTING
RIGHT CHANNEL PRE-EMPHASIS
(see Fig. 11.3 and Fig. 11.10)
To change the pre-emphasis, you need to set (or change position of) the JP3, JP4 jumpers on the
STEREO encoder board.
To disable preemph you have to remove both jumpers; to get a 50 us preemph, you have to insert
only JP3; if you want a 75 us preemph both JP3 and JP4 must be inserted.
LEFT CHANNEL PRE-EMPHASIS
(see Fig. 11.3 and Fig. 11.10)
To change the pre-emphasis, you need to set (or change position of) the JP5, JP6 jumpers on the
STEREO encoder board.
To disable preemph you have to remove both jumpers; to get a 50 us preemph, you have to insert
only JP6; if you want a 75 us preemph both JP5 and JP6 must be inserted.
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Fig. 11.1 - STEREO ENCODER GENERAL ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.2 - L/R PEAK DETECTOR STAGE ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.3 - INPUT STAGE ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.4 - RIGTH FILTER STAGE ELECTRICAL SCHEMATIC
U
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.5 - LEFT FILTER STAGE ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.6 - OSCILLATOR STAGE ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.7 - 19 KHz STAGE ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.8 - 38 KHz STAGE ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.9 - OUTPUT STAGE ELECTRICAL SCHEMATIC
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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Fig. 11.10 - STEREO ENCODER COMPONENT LAYOUT
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.
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11.2 STEREO ENCODER PARTS LIST
ITEM QUANTITY REFERENCE PART
__________________________________________________________________
1 3 C64,C65,C135 220n poly
2 1 C1 56p cer np0
3 38 C2,C3,C4,C10,C13,C14,C15, 100n poly
C16,C17,C22,C23,C24,C25,
C26,C27,C28,C29,C36,C37,
C51,C52,C53,C54,C55,C56,
C57,C58,C59,C66,C69,C81,
C82,C83,C84,C85,C86,C89,
C90
4 1 C8 33p cer np0
5 1 C9 10-60p orange
6 2 C11,C44 10p cer np0
7 1 C12 18p cer np0
8 2 C20,C21 330p cer
9 1 C38 3p3 cer np0
10 1 C39 5p6 cer np0
11 1 C40 27p cer np0
12 1 C41 47p cer np0
13 17 C42,C107,C108,C109,C110, 3n3 polistirene
C111,C112,C113,C114,C117,
C118,C119,C120,C121,C122,
C123,C126
14 2 C43,C61 82p cer np0
15 2 C45,C49 470p polistirene
16 1 C46 330p polistirene
17 2 C47,C63 68p cer np0
18 1 C48 15p cer np0
19 2 C62,C50 120p cer np0
20 1 C60 3-18p red
21 12 C67,C68,C79,C80,C91,C92, 10u tant 25V
C95,C96,C115,C116,C124,
C125
22 4 C70,C71,C77,C78 100p
23 4 C72,C73,C75,C76 10p cer
24 3 C74,C102,C106 100p cer
25 4 C87,C88,C97,C98 330n poly
26 6 C99,C100,C101,C103,C104, 4n7 polistirene
C105
27 1 C127 100p cer np0
28 1 C128 680p cer np0
29 1 C129 10p
30 2 C130,C134 3n3
31 2 C132,C131 47u TANTALIO
32 1 C133 1n poly
33 4 D1,D2,D3,D4 1N4148
34 2 JP2,JP1 jumper
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ITEM QUANTITY REFERENCE PART
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35 2 JP6,JP3 jumper ON/OFF
36 2 JP5,JP4 jumper 50/75us
37 2 J2,J1 CON14
38 2 J3,J4 CON20
39 1 L5 10uH ind. assiale
40 4 L1,L2,L3,L4 10uH
41 1 RL1 G6H-2-100 OMRON 22Z3K3 12V
42 1 R1 1k 1/8W
43 1 R2 1M 1/8W
44 1 R3 11k 1/4W 1%
45 1 R4 11k5 1/4W 1%
46 1 R5 12k4 1/4W 1%
47 1 R6 14k3 1/4W 1%
48 1 R7 17k4 1/4W 1%
49 1 R8 23k2 1/4W 1%
50 1 R9 37k4 1/4W 1%
51 1 R10 113k 1/4W 1%
52 3 R11,R68,R75 9k53 1/4W 1%
53 1 R12 8k66 1/4W 1%
54 7 R13,R80,R82,R83,R102, 2k trim multi
R104,R106
55 1 R14 511R 1/4W 1%
56 1 R15 5OOR trim multi
57 1 R16 487R 1/4W 1%
58 4 R17,R30,R55,R76 4k7 1/8W
59 1 R18 10k 1/4W
60 2 R19,R26 324k 1/4W 1%
61 2 R20,R25 115k 1/4W 1%
62 2 R21,R24 75k 1/4W 1%
63 2 R22,R23 64k9 1/4W 1%
64 7 R27,R63,R64,R67,R69,R70, 12k1 1/4W 1%
R74
65 2 R28,R29 2k15 1/4W 1%
66 1 R31 6k81 1/4W 1%
67 1 R32 13k 1/4W 1%
68 1 R33 10k5 1/4W 1%
69 1 R34 909R 1/4W 1%
70 2 R35,R36 1k47 1/4W 1%
71 1 R37 5k trim multi
72 2 R39,R38 10k 1/4W 1%
73 5 R40,R53,R54,R58,R59 31k6 1/4W 1%
74 1 R41 50k trim multi
75 1 R42 20k 1/4W 1%
76 1 R43 825R 1/4W 1%
77 1 R44 1k5 1/4W
78 1 R45 20k trim multi
79 1 R46 15k 1/4W
80 1 R47 0R 1/4W
81 2 R48,R49 10k 1/8W
82 2 R50,R51 100k 1/8W
83 2 R52,R60 680R 1/4W
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ITEM QUANTITY REFERENCE PART
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84 1 R56 10k trim multi
85 1 R57 2k2 1/8W
86 2 R61,R62 560R 1/4W
87 4 R65,R66,R71,R77 169k 1/4W 1%
88 2 R73,R72 22k 1/8 W
89 12 R78,R81,R93,R94,R95,R98, 3k01 1/4W 1%
R100,R103,R105,R115,R116,
R118
90 2 R79,R101 3k3 1/4W
91 4 R84,R85,R107,R108 2k2 1/4W
92 4 R86,R91,R99,R113 301k 1/4W 1%
93 2 R87,R109 3k57 1/4W 1%
94 2 R88,R110 4k64 1/4W 1%
95 2 R89,R111 4k02 1/4W 1%
96 2 R90,R112 2k61 1/4W 1%
97 2 R92,R114 1k91 1/4W 1%
98 2 R96,R117 2k74 1/4W 1%
99 2 R97,R119 536R 1/4W 1%
100 1 R122 0R
101 1 R123 5k6
102 1 R124 100R 1/4 W
103 1 R125 100R 1/4W
104 1 R126 4K7
105 1 R127 10k 1/4 W 1%
106 1 U1 4001
107 1 U2 4024
108 1 U3 4013
109 4 U4,U5,U12,U13 4035
110 6 U6,U16,U23,U24,U25,U26 MC33079
111 4 U7A,U7,U18B,U27 NE5532
112 1 U8 4066
113 3 U9,U10,U11 4053
114 2 U14,U15 TL084
115 2 U19,U22 TL082
116 1 U20 7805
117 1 U21 7905
118 1 Y1 2.432MHz
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12. APPENDIX
12.1 APPENDIX A - XLR AUDIO CONNECTORS PINOUTS
Connection procedure to connect the audio signal cables to the XLR female connectors for a
balanced or unbalanced signal.
XLR FEMALE
XLR CONNECTOR PIN BALANCED SIGNAL UNBALANCED SIGNAL
1 ground ground
2 "
+" ground
3 "
– " signal
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12.2 APPENDIX B - MOSFET REPLACEMENT
(see next figure)
1. Disconnect the supply voltage from the output board (faston connection).
2. Unscrew the damaged MOSFET and the output matching board.
3. Unsolder the MOSFET.
4. Clean the input and output boards to prevent short-circuits before replacing the MOSFET.
5. Locate properly the white teflon sheets between the output circuit and the heat sink: affix the
circuit using the two screws.
6. Put on the thermally conductive compound between the MOSFET case and the heat sink.
7. Fix the MOSFET to the heat sink (screws must be strongly fixed) and solder all the four pins of
the MOSFET: careful attention must be paid to the output board soldering since an
excessive quantity of tin can cause a short circuit between different board layers. Reconnect
also the 2 GND interconnections, indicated, and check the right soldering of the input
transformer and gate resistor.
8. Verify that the supply voltage is 45V (if it is not, there is a problem in the switching power
supply boards). Reconnect the supply voltage to the output board (faston connection), placing an
amperometer in series (minimum full scale deflection 10A).
9. Control the output power level (it should be 1000W) and the absence of spurious emissions (to
check it, use a spectrum analyser and an output RF monitor sufficiently attenuated). Pay
attention to the amperometer: the MOSFET must not drain more than 9A.
10. In case the replaced MOSFET doesn’t reach the nominal output power or in case of spurious
emissions you need to improve the input matching of the MOSFET: to do this compress or
expand manually the input circuit coil (see ) to maximise the output power.
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