Broadcast Electronics Marti Electronics ME-40 Manual

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Broadcast Electronics

4100 North 24

Street, Quincy, Illinois 62305 USA • Phone (217) 224-9600 • Fax (217) 224-9607 • www.bdcast.com • bdcast@bdcast.com

Marti

Electronics

FM Exciter

MODELS: ME-40

566-017 rev D

April 4, 2011

Table of Contents

Summary of Contents for Broadcast Electronics Marti Electronics ME-40

Page 1 Broadcast Electronics 4100 North 24 Street, Quincy, Illinois 62305 USA • Phone (217) 224-9600 • Fax (217) 224-9607 • www.bdcast.com • bdcast@bdcast.com Marti Electronics FM Exciter MODELS: ME-40 566-017 rev D April 4, 2011...
Page 2 The information in this publication is subject to improvement and change without notice. Although every effort is made to ensure the accuracy of the information in this manual, Broadcast Electronics accepts no responsibility for any errors or omissions. Broadcast Electronics reserves the right to modify and improve the design and specifications of the equipment in this manual without notice.
Page 3 Marti Electronics Product Warranty (One-Year Limited) Broadcast Electronics (BE) hereby warrants all new Marti Electronics branded products, including STL systems, manufactured by BE, against any defects in material or workmanship at the time of delivery thereof, or that develop under normal use within a period of one (1) year, from the date of shipment.
Page 4 NO OTHER WARRANTIES, OR ANY AFFIRMATIONS OF FACT OR PROMISES BY BE, WITH REFERENCE TO THE EQUIPMENT, OR TO MERCHANTABILITY, FITNESS FOR A PARTICULAR APPLICATION, SIGNAL COVERAGE, INFRINGEMENT, OR OTHERWISE, WHICH EXTEND BEYOND THE DESCRIPTION OF THE EQUIPMENT ON THE FACE HEREOF. ©2011 Broadcast Electronics...
Page 5 Emergency and warranty replacement parts may be ordered from the following address. Be sure to include the equipment model number, serial number, part description, and part number. Non- emergency replacement parts may be ordered directly from the Broadcast Electronics stock room at the number shown below.
Page 6 All returned merchandise must be sent freight prepaid and properly insured by the customer. MODIFICATIONS - Broadcast Electronics, reserves the right to modify the design and specifications of the equipment in this manual without notice. Any modifications shall not adversely affect performance of the equipment so modified.
Page 7 Additional information follows. D. RF BURNS - Circuit boards with RF power transistors contain high RF potentials. Do not operate an RF power module with the cover removed. ©2011 Broadcast Electronics...
Page 8 The power components in the transmitter are cooled by forced-air and natural convection. When handling any components of the transmitter after it has been in operation, caution must always be taken to ensure that the component is cool enough to handle without injury. ©2011 Broadcast Electronics...
Page 9: Table Of Contents
POWER SUPPLY/CONTROL CIRCUIT BOARD ..............21 5.10 MODULATED OSCILLATOR ASSEMBLY ................35 5.11 AFC/PLL ........................39 5.12 RF AMPLIFIER ....................... 53 BILL OF MATERIAL ......................65 SCHEMATICS ......................... 81 ©2011 Broadcast Electronics...
Page 11: Introduction
1.3 ELECTRICAL DESCRIPTION. The Marti Electronics ME-40 is a solid-state wideband FM exciter providing a continuously variable RF output from 3 to 40 watts into a 50 Ohm load at any frequency within the 87.5 to 108 MHz FM broadcast band in 10 kHz increments.
Page 12: Equipment Specifications
Audio Frequency Response 0.5 dB, 30 Hz to 15 KHZ, selectable flat, 50, 75 microsecond pre-emphasis. THD + Noise 0.05% or less at 400 Hz. SMPTE IM Distortion 0.05% or less, 60 Hz/7 KHz, 4:1 ratio. ©2011 Broadcast Electronics...
Page 13: Installation
The contents of the shipment should be as indicated on the packing list. If the contents are incomplete, or if the unit is damaged electrically or mechanically, notify both the carrier and Marti Electronics. 2.2 INSTALLATION. Each exciter is assembled, operated, tested, and inspected at the factory prior to shipment and is ready for ©2011 Broadcast Electronics...
Page 14: Preliminary Installation
THE SLIDE RAILS MUST BE PARALLEL TO EACH OTHER AND LEVEL BEFORE DRILLING ANY HOLES TO MOUNT THE REAR OF THE SLIDE RAILS. CAUTION Secure the movable portion of the slide rail to the mounting brackets with the hardware supplied. ©2011 Broadcast Electronics...
Page 16 (refer to Figure 2-2). S3 must be in the POS position when the ME-40 is operated with a Broadcast Electronics transmitter or as a stand-alone unit. Switch S3 is factory operated to the POS position prior to shipping.
Page 17: Installation Adjustments
Ensure a ground wire is connected from terminal 4 of the exciter rear-panel terminal board to earth ground. 2.4.4 EXCITER CHECKOUT. 1. Before proceeding, check the following: A Ensure all connections at terminal strips are secure. B. Ensure primary power is properly programmed. C. Ensure the chassis ground connection is secure. ©2011 Broadcast Electronics...
Page 18 Disconnect the RF load and connect the exciter output to the transmitter RF input connector. 2.4.5 CONNECTION OF COMPOSITE STEREO SIGNAL SOURCES. Two composite input jacks (BAL, UNBAL) are provided on the rear-panel of the ME-40 for ©2011 Broadcast Electronics...
Page 19 Remove the coaxial cable from the RF OUTPUT receptacle and connect to filter input receptacle J 1. Connect the short coaxial cable (supplied) between filter receptacle J2 and the RF OUTPUT receptacle. When installation is complete, replace the exciter top-panel. ©2011 Broadcast Electronics...
Page 20: Operation
Refer to Figure 3-1 for the location of all controls and indicators associated with normal operation of the ME-40 Exciter. The function of each control or indicator is described in Table 3-1. 3.2 OPERATION. NOTE THE FOLLOWING PROCEDURE ASSUMES THAT THE EXCITER IS COMPLETELY INSTALLED AND IS FREE OF ANY DISCREPANCIES NOTE ©2011 Broadcast Electronics...
Page 21 AND AFC LEVEL. Refer to test sheet for Selects 6 test functions as explained in items 5, TEST METER Switch 6, 7, Power Indicates the forward power output (top FORWARD meter scale) Power Indicates power reflected from the exciter load REVERSE (top scale) ©2011 Broadcast Electronics...
Page 22 TABLE 3-2. POWER/VSWR CONVERSION Reflected Power in Watts ------------------------------------- POWER RATIO Forward Power in Watts VSWR 0.000 1.0:1 0.002 1.1:1 0.008 1.2:1 0.017 1.3:1 0.028 1.4:1 0.040 1.5:1 0.053 1.6:1 0.074 1.75:1 0.111 2.0:1 0.183 2.5:1 0.250 3.0:1 0.360 4.0:1 ©2011 Broadcast Electronics...
Page 24: Overall Theory Of Operation
RF indicator will illuminate. 4.2 RFI FILTER NETWORK. The RFI filter prevents interference from signals of 500 kHz and above by filtering and bypassing the audio, control, and status input and output circuits. ©2011 Broadcast Electronics...
Page 25: Metering Circuit
The broadband characteristics of the amplifier eliminates the necessity for adjustments for any frequency within the FM band, assures that the exciter output is transparent to the signal generated by the modulated oscillator, and enhances amplifier stability under varying load conditions. ©2011 Broadcast Electronics...
Page 26: Maintenance
The maintenance philosophy of the ME-40 FM Exciter consists of problem isolation to a specific assembly. Subsequent troubleshooting is provided by each applicable assembly publication in Part II of this manual to isolate specific components. If desired, the entire assembly may be returned to Marti Electronics for repair of replacement. ©2011 Broadcast Electronics...
Page 27: Adjustments
All internal components may be accessed through a removable top cover (refer to Figure 5-1). To restore normal operation replace the top-cover and secure exciter in normal rack position. ©2011 Broadcast Electronics...
Page 28 TABLE 5-2. AC POWER REQUIREMENTS RF POWER OUTPUT MIDBAND ACINPUT POWER REQUIREMENTS 230VAC 0.65 Ampere 230VAC 0.60 Ampere 230VAC 0.55 Ampere 230 VAC 0.50 Ampere 115VAC 1.30 Amperes 115VAC 1.20 Amperes 115VAC 1.10 Amperes 115 VAC 1.00 Ampere ©2011 Broadcast Electronics...
Page 29 WARNING BERYLLIUM OXIDE CERAMICS (BeO)- AVOID BREATHING DUST OR FUMES. WARNING WARNING THE WHITE CASE MATERIAL OF THE ME-40 RF AMPLIFIER TRANSISTORS IS MADE OF BeO CERAMIC MATERIAL. DO NOT PERFORM ANY OPERATION ON ANY BeO CERAMIC WHICH MIGHT PRODUCE DUST OR FUMES, SUCH AS GRINDING, GRIT BLASTING, OR ACID CLEANING.
Page 30: Integrated Circuits
MODULATION CALIBRATION procedure in the AFC/PLL section of this manual. MODULATION CORRECTION procedure in the AFC/PLL section of this manual. d. FWD CAL (R5) AND RFL CAL (R9) procedure in the POWER SUPPLY/CONTROL section of this manual. ©2011 Broadcast Electronics...
Page 31: Power Supply/Control Circuit Board
Approximately + 1V at 10K Ohm for 2W RF TEMP OL DRIVE +18V at 5mA, Maximum PA VOLTAGE Approximately +20.8V at 3.25 Amperes for 40W RF 5.9.1 REMOVAL AND INSTALLATION This section provides removal and installation procedures for the power supply/control circuit board. ©2011 Broadcast Electronics...
Page 32 1) RF MUTE CIRCUIT The RF mute circuit automatically inhibits exciter RF output if the AFC circuit is unlocked or if the transmitter is not ready to accept RF drive. This circuit consists of logic input switch S3, inverters Q3 and Q4, RF mute driver U3B, and mute switch Q2. ©2011 Broadcast Electronics...
Page 33 HIGH to mute switch Q2 to enable the mute circuit. 5) POWER CONTROL CIRCUIT. The power control circuit provides automatic. power control, over voltage protection, and short circuit protection for the RF power transistor. This ©2011 Broadcast Electronics...
Page 34 1) Primary power is applied to the ME-40 through an RFI filter and AC receptacle module. Power from the receptacle is routed to the flushing fan and the primary of power transformer T1 to provide 9.0 volt, 22.5 volt, and 25.0 volt AC potentials at the secondaries. ©2011 Broadcast Electronics...
Page 35 The +20 volt potential is distributed to the AFC/PLL circuit board, metering circuit board, and power supply/control circuit board. In addition, the power supply provides a +30 volt unregulated potential for input to pass transistors Q1 and Q2 on the RF amplifier assembly. ©2011 Broadcast Electronics...
Page 37 Connect a 100 watt, 50 Ohm test load and in-line wattmeter to the rear-panel RF OUTPUT receptacle. d. Remove the top-cover. Refer to Figure 4-1 and operate AUTO-PWRMAN switch S1 to the MAN position. e. Apply primary power and operate the exciter. ©2011 Broadcast Electronics...
Page 38 Remove the external wattmeter. Refer to Figure 5-3 and connect two 100 watt, 50 Ohm test loads (in parallel) to the RF OUTPUT receptacle as shown. Depress the FWD meter function switch and record the meter indication ©2011 Broadcast Electronics...
Page 40 TEMP CAL (R25). TEMP CAL control R25 on the power supply/control circuit board calibrates the output voltage of temperature sensor U1 on the RF amplifier assembly in relation to temperature. Potentiometer R25 is adjusted as follows: WARNING DISCONNECT THE PRIMARY POWER TO THE EXCITER BEFORE PROCEEDING. WARNING ©2011 Broadcast Electronics...
Page 41 Disconnect the primary power to the exciter. Remove the test equipment and replace the top-cover. TEMP TRIP (R27). TEMP TRIP control R27 on the power supply/control circuit board adjusts the threshold of the over temperature circuit. Potentiometer R27 is adjusted as follows. ©2011 Broadcast Electronics...
Page 42 TROUBLESHOOTING The troubleshooting philosophy for the power supply/control circuit board consists of isolating a problem to a specific circuit. The problem may be further isolated by referencing the following information and Figure 5-4 which presents troubleshooting information. ©2011 Broadcast Electronics...
Page 43 After the problem is isolated and power is totally de-energized, refer to the schematic diagrams and the theory of operation to facilitate in problem resolution. The defective circuitry may be repaired locally or the circuit board may be returned to Marti Electronics, Inc. for repair or replacement. ©2011 Broadcast Electronics...
Page 45: Modulated Oscillator Assembly
Disconnect RF sample connector P6 and RF output connector P9 from the rear of the modulated oscillator assembly. d. Remove the four screws securing the modulated oscillator assembly to the steel mounting plate. Remove the ground straps. ©2011 Broadcast Electronics...
Page 46 FM modulation. Capacitor C3 prevents ground loops between the AFC/PLL circuit board ground and modulated oscillator assembly ground. The oscillator output amplitude is maintained at a constant level by limit diode D9/D10/D11. ©2011 Broadcast Electronics...
Page 48 5.10.3 MAINTENANCE MODULATED OSCILLATOR 5.10.4 TROUBLESHOOTING. Field servicing the modulated oscillator assembly is not recommended. Therefore, if difficulties are encountered and the modulated oscillator is suspected as faulty, return the assembly to Marti Electronics for repair or replacement. ©2011 Broadcast Electronics...
Page 49: Afc/Pll
Figure 5-6. Modulated Oscillator Assembly 5.11 AFC/PLL The AFC/PLL circuit board: I) synthesizes and maintains the desired carrier frequency to a high degree of precision, and 2) processes the audio for modulation. ©2011 Broadcast Electronics...
Page 50 COMPOSITE TEST 6.0V p-p at 1 k Ohm 5.11.1 REMOVAL AND INSTALLATION REQUIRED EQUIPMENT. A #2 Phillips screwdriver with a 4 inch (10.16 cm) blade is required to remove the AFC/PLL circuit board assembly from the exciter chassis. ©2011 Broadcast Electronics...
Page 51 The 2 MHz signal from U1B is input to divide-by-two counter U1A to produce 1 MHz Logic circuits U2, U3, and U4A further divide the 1 MHz signal by 250 to provide 4 kHz to one shot U5. ©2011 Broadcast Electronics...
Page 52 U4B which leads or lags the signal at the D input depending on the phase error direction. LOOP FILTER CONTROL CIRCUIT. 5.11.2.5 The loop filter control circuit increases/decreases the voltage controlled oscillator (VCO) center frequency to maintain accuracy. U10B biases integrator/amplifier U11B at 2. 5V to provide a ©2011 Broadcast Electronics...
Page 53 LED driver transistor Q2 ON to illuminate indicator DS3. If any component within the RF sample divider circuit or modulated oscillator circuit fails, indicator DS3 will extinguish and the QB output of U12 will issue a reset pulse to U4B which inhibits the RF. AUDIO PROCESSING CIRCUITS. 5.11.2.7 ©2011 Broadcast Electronics...
Page 54 DS4. -20 volts is applied to regulator circuit U18 to provide an output potential of -15V to the circuit board and indicator DS5. In addition, +5 volts is applied to a filter circuit consisting of capacitors C12, C13, and inductor L1. The output illuminates indicator DS1 and provides a +5V/A operating potential. ©2011 Broadcast Electronics...
Page 55 BAL COMP (R81). The BAL COMP level control on the AFC/PLL circuit board adjusts the 5.11.3.2 output level of the balanced composite amplifier circuit. BAL COMP control R81 is adjusted as follows. Procedure to adjust BAL COMP control R81; refer to the figure as required and proceed as follows: ©2011 Broadcast Electronics...
Page 56 Adjust the audio generator for 400Hz at 1.24V RMS output. With an insulated adjustment tool, adjust R69 until the voltmeter indicates 2.12V RMS. g. Disconnect the primary power, remove all test equipment, and replace the top cover. ©2011 Broadcast Electronics...
Page 57 DISCONNECT PRIMARY POWER TO THE EXCITER BEFORE PROCEEDING. WARNING b. Disconnect the exciter primary power. Remove the top-cover and connect an audio generator to the front-panel COMPOSITE IN receptacle. Connect a digital voltmeter to the front-panel COMPOSITE OUT receptacle. ©2011 Broadcast Electronics...
Page 58 FREQUENCY SELECTION. The exciter carrier frequency is established by programmable 5.11.3.7 frequency synthesizer switches S1, S2, and S3 on the AFC/PLL circuit board assembly (refer to Figure 5-7). The position of each switch corresponds to a weighted binary number (refer to the Table 5-6). ©2011 Broadcast Electronics...
Page 60 Due to critical tuning parameters, field adjustment is not recommended. If adjustment is necessary, contact Marti Electronics service for assistance. PRE-EMPHASIS SELECTION. Programmable jumpers P5A and P5B on the AFC/PLL circuit 5.11.3.9 board establish the exciter pre-emphasis. The exciter is normally shipped with 75 ©2011 Broadcast Electronics...
Page 61 After the problem is isolated and power is totally de-energized, refer to the schematic diagrams and the theory of operation to assist in problem resolution. The defective circuitry may be repaired locally or the circuit board may be returned to Marti Electronics for repair or replacement. ©2011 Broadcast Electronics...
Page 63: Rf Amplifier
Refer to Table 5-6 for electrical specifications of the RF amplifier assembly., TABLE 5-6. ELECTRICAL CHARACTERISTICS – RF Amplifier Assembly PARAMETER SPECIFICATIONS SIGNAL LEVELS: RF AMPLIFIER ©2011 Broadcast Electronics...
Page 64 5.12.2 DETAILED THEORY OF OPERATION – RF Amplifier The RF amplifier assembly consists of: 1) two series-pass voltage regulator transistors, 2) a +20V regulator circuit, 3) a temperature sensing circuit, and 4) an RF amplifier circuit board. All wiring ©2011 Broadcast Electronics...
Page 65 Input mute circuit. RF AMPLIFIER CIRCUIT 5.12.2.1 The RF amplifier circuit consists of an input amplifier, a driver amplifier, a power amplifier, and associated components. Interstage impedance matching networks are designed with microstrips to provide maximum broadband frequency stabilization. ©2011 Broadcast Electronics...
Page 67 U2 through Q5. When the exciter is muted, the final +V supply is terminated. The loss of this potential will bias Q6 OFF and disable Q5 which terminates the +20 volts to U2. ©2011 Broadcast Electronics...
Page 68 Connect a l00 watt non-inductive test load to the exciter rear-panel RF OUTPUT receptacle. d. Apply primary power and operate the exciter for 50 watts as indicated on the front panel meter. e. Depress the front-panel RFL meter function switch. ©2011 Broadcast Electronics...
Page 69 Refer to Figure 5-11 and remove the 10 screws securing the RF amplifier assembly to the mounting bracket/shield. d. Refer to Figure 5-11 and position the RF amplifier assembly in the chassis as shown. e. Refer to Figure 5-11 and connect JI5 to P15 of the RF amplifier assembly power/control cable. ©2011 Broadcast Electronics...
Page 70 Refer to Figure 5-11 and adjust PWR SET control R52 until the meter indicates the value recorded in step H. WARNING DISCONNECT THE PRIMARY POWER TO THE EXCITER BEFORE PROCEEDING. WARNING o. Disconnect primary power to the exciter. p. Remove all test equipment and replace the RF amplifier assembly mounting bracket/shield. ©2011 Broadcast Electronics...
Page 71 The troubleshooting philosophy for the RF amplifier assembly consists of isolating a problem to a specific circuit. The problem may be further isolated by referencing the following information and Figure which presents troubleshooting information for the RF amplifier assembly. ©2011 Broadcast Electronics...
Page 73 After the problem is isolated and power is totally deenergized, refer to the schematic diagrams and the theory of operation to facilitate in problem resolution. The defective circuitry may be repaired locally or the circuit board may be returned to Marti Electronics for repair or replacement ©2011 Broadcast Electronics...
Page 75: Bill Of Material
SCREW,8-32X.437,S.S. PHH 420-8116 SCREW,8-32X.250,S.S. PH FLH UC 421-1102 RIV,BLD,DOMED 3/32 421-1113 RIV,CLOSED-END .125 X .316L 421-4008 4-40 KEP NUT 421-6001 6-32 S.S. HEX THIN NUT 421-6008 6-32 KEP NUT 421-8001 8-32 S.S. HEX NUT 421-8028 NUT,JAM,1/2-28 UNEF-2B ©2011 Broadcast Electronics...
Page 76 Screw, 6-32 x 3/8 phillips pan head black zinc M/S" 510-066 Equipment Label, 2.5 x .937" Brady #10C8600890" 510-212 CONTROL KNOBS, #45KNO23 520-0034-100 CHASSIS,FX50/FX50E 550-126 Connector, crimp terminal pin Molex 08- 50-0187 550-135 Connector, 6 pin Molex housing 09-50- 8060 ©2011 Broadcast Electronics...
Page 77 Connector, 24 pin break-away (angle) 0.25 Molex 26-48-6246 ..2 550-176 Connector, 8 pin Molex angle header (cut from 550-163) ..3 550-163 Connector, 24 pin break-away (angle) 0.333 Molex 26-48-6246 ..2 550-208 Connector, 3 pin single row header (cut ©2011 Broadcast Electronics...
Page 78 CAP,CER,MNLY,.1uF,50V,20% C1,C3,C5,C6,C7, C8,C10,C12,C13, C21,C24,C27,C32, C33,C39,C43,C51, C55,C58,C60,C61, C64,C66,C41 ..2 020-4793 CAP,LYTIC,4700UF,16V,LOW LEAK ..2 023-1076 CAP,LYTIC,10uF,50V,STDUP C42,C68,C70,C72, ..2 023-1084 CAP,LYTIC,100MFD,35V,STDUP,RAD C4,C15,C22,C23, C25,C49,C50,C52, C53,C69,C71 ..2 024-1064 CAP,LYTIC,1UF,50V,RAD ..2 024-3364 CAP,LYTIC,3.3UF,50V,NP ..2 024-3374 CAP,LYTIC,33UF,35V,STDUP ..2 024-4764 CAP,LYTIC,4.7UF,50V,20%,STDUP ..2 030-1053 CAP,MYLAR FILM,.1uF,100V,RAD ©2011 Broadcast Electronics...
Page 79 R101 ..2 103-1504 RES,1.5K OHM,1/4W,1%,METAL R28, ..2 103-1745 RES,17.4K OHM,1/4W,1%,METAL ..2 103-1825 RES,18.2K OHM,1/4W,1%,METAL ..2 103-2213 RES,221 OHM,1/4W,1%,METAL ..2 103-2673 RES,267 OHM,1/4W,1%,METAL R7,R14,R38,R93, ..2 103-3014 RES,3.01K OHM,1/4W,1%,METAL ..2 103-3323 RES,332 OHM,1/4W,1%,METAL R2,R8 ..2 103-3324 RES,3.32K OHM,1/4W,1%,METAL R4,R5 ©2011 Broadcast Electronics...
Page 80 IC, 74LS90N (N) ..2 228-4013 IC,MC14013B ..2 228-4073 IC,MC14073B ..2 228-4538 IC,MC14538B NATL U5,U12 SEMICONDUCTOR ..2 323-7345 LDR,LED TYPE,VACTEC VTL 5C2 LDR1,LDR2,LDR3 ..2 323-9224 IND,LED,GRN,521-9270 DS1,DS2,DS3, DS4,DS5 ..2 340-0002 SW,4 POS,SPST,8-PIN DIP S1,S2,S3 ..2 340-0004 SW,JUMPER PROGRAMMABLE P3,P4,P5A,P5B, ©2011 Broadcast Electronics...
Page 81 CAP,LYTIC,100UF,50V,INS ..3 014-1094 CAP,LYTIC,1000UF,50V,INS C24,C29 ..3 023-1076 CAP,LYTIC,10uF,50V,STDUP ..3 023-1084 CAP,LYTIC,100MFD,35V,STDUP,RAD C26,C27,C31,C32, C35,C36 ..3 024-1064 CAP,LYTIC,1UF,50V,RAD C11,C23 ..3 024-2274 CAP,LYTIC,22UF,100V,STDUP ..3 030-1033 CAP,CER MOLDED,.001UF,200V,10% C12,C20 ..3 031-1043 CAP,MYLAR FILM,.01UF,100V,RAD C8,C10 ..3 040-5013 CAP,MICA,50PF,500V,5% ..3 042-3922 CAP,MICA,390PF,100V,5% C1,C2,C14,C18, ©2011 Broadcast Electronics...
Page 82 VARISTOR,V477A1 47V GE MOV1 ..3 178-1054 RES,TRMR,10K,HORZ ADJ ..3 178-2044 RES,TRMR,2K,HORZ ADJ R5,R27 ..3 178-5044 RES,TRMR,5K,HORZ ADJ ..3 178-5046 RES,TRMR,5K,1/2W,MT ..3 200-0015 DIODE,ZENER,15V,1W,1N4744A ..3 200-0027 DIODE,ZENER,1N4750A,27V ..3 200-4751 DIODE,ZENER,IN4751A 30V 1W ..3 201-4728 DIODE,ZENER,1N4728 D29,D30 ..3 202-0502 RECT,3A,200V,IN5402 ©2011 Broadcast Electronics...
Page 83 103-5141 RES,5.11K OHM,1/4W,1%,METAL ..2 340-0004 SW,JUMPER PROGRAMMABLE P3Replaced 417- 0309 on 06/21/2007 12:49:19 ..2 412-1600 BARR STP,16 POS,BEAU ..2 417-0003 CONN,HEADER 3 PIN ..2 417-2503 RCPT,25 PIN D, MALE ..2 519-0190 PCB,MACH,FM EXCITER INTERFACE 919-0210 ASSY,PCB,DISPLAY I/F,ME-40 ©2011 Broadcast Electronics...
Page 84 R304,R305, ..2 130-2423 RES,240 OHM,2W,5% R301,R309, ..2 201-0012 ZENER VOLTAGE SUPPRESSOR,+/- D310,D311,D312, D313,D314,D315, D316,D317,D318, D319,D320,D321 ..2 201-0027 ZENER VOLTAGE SUPPRESSOR,+/- D302,D303,D304, D305 ..2 201-0040 ZENER VOLTAGE SUPPRESSOR,+/- D306,D307,D308, D309 ..2 203-4005 DIODE,1N4005 D301, ..2 270-0065 REL,SPDT,12VDC,DIP K301, ©2011 Broadcast Electronics...
Page 85 KEYING PLUG MOD IV 87077 AMP ..2 417-1202 HSNG,12 PIN 2-87499-1 AMP ..2 417-1401 HOUSING,SKT,14PIN,AMP MOD IV P12,P13, ..2 417-2379 CONN,155OC HOUSING,AMP,MR ..2 417-8766 CONTACT,CRIMP,MOD-IV 87809-1 ..2 418-0034 PLUG,BNC DUAL CRIMP 1-227079-6 ..2 418-0701 CONN,HOUSING,2 PIN ..2 418-1271 CONN,HOUSING,12PIN P306 ©2011 Broadcast Electronics...
Page 86 RES,1K OHM,1/4W,1% R7,R13,R14 ..3 100-1111 RES,118 OHM,1/4W,1% ..3 100-4561 RES,453K OHM,1/4W,1% ..3 103-1007 RES,1 MEG OHM,1/4W,1%,METAL ..3 103-1021 RES,10 OHM,1/4W,1%,METAL R1,R11,R15,R20 ..3 103-1062 RES,100K OHM,1/4W,1%,METAL ..3 103-2213 RES,221 OHM,1/4W,1%,METAL R4,R17,R18,R19, ..3 103-2673 RES,267 OHM,1/4W,1%,METAL ..3 103-2744 RES,2.74K OHM,1/4W,1%,METAL ©2011 Broadcast Electronics...
Page 87 ..2 407-3000 COVER,TSTR ..2 417-0017 RECP,BNC,BULKHEAD,UG-492A/U J17,J18 ..2 418-0010 INSULATOR,MICA,TSTR,TO-3PKG ..2 420-0305 SCREW,4-40X.375,BR PH SC ..2 420-0509 SCREW,10-32X.500,BR SL PAN HD ..2 420-6105 SCREW,6-32X.312,S.S. PH ..2 420-6106 SCREW,6-32X.375,S.S. PH ..2 420-6110 SCREW,6-32X.625,S.S. PH ..2 420-6112 SCREW,6-32X.750,S.S. PH ©2011 Broadcast Electronics...
Page 88 RES,4.32K OHM,1/4W,1%,METAL ..3 103-4755 RES,47.5K OHM,1/4W,1%,METAL ..3 103-4993 RES,499 OHM,1/4W,1%,METAL R18, ..3 103-5112 RES,51.1 OHM,1/4W,1%,METAL ..3 103-7541 RES,7.50K OHM,1/4W,1%,METAL R16, ..3 110-3623 RES,36 OHM,1/2W,5% ..3 130-2223 RES,22 OHM,2W,5% R9,R11, ..3 130-4723 RES,47 OHM,2W,5% ..3 177-2034 RES,TRMR,200 OHM,VERT ADJ ©2011 Broadcast Electronics...
Page 89 LUG,TERM #10 RING CRIMP 16-22 ..3 417-0036 PIN CONN,AMP,350967-1 ..3 417-0053 SKT,CONN 641294-1 AMP ..3 417-0175 CONN, HOUSING, 20 PIN ..3 417-2379 CONN,155OC HOUSING,AMP,MR ..3 418-0034 PLUG,BNC DUAL CRIMP 1-227079-6 ..3 418-0670 HOUSING,CONN,6PIN FEM ..3 601-1800 WIRE,AWG18 19/30 BLK ©2011 Broadcast Electronics...
Page 90 420-8110 SCREW,8-32X.625,S.S. PHH ..2 421-0102 10-32 KEP NUT ..2 423-0001 #10 FLAT .450 X .200 X .050 ..2 459-0138-001 RETAINER,SLIDE BRKT ..2 469-0415 SLIDE, EXCITER CHASSIS ..2 470-0102 BRKT,MTG,EXCITER SLIDES ..2 701-0005 ANTISTATIC ZIPLOC BAG 4X6 4MIL ©2011 Broadcast Electronics...
Page 92 Broadcast Electronics 4100 North 24 Street, Quincy, Illinois 62305 USA • Phone (217) 224-9600 • Fax (217) 224-9607 • www.bdcast.com • bdcast@bdcast.com Marti Electronics FM Exciter MODELS: ME-40 566-017 rev D April 4, 2011...
Page 93 The information in this publication is subject to improvement and change without notice. Although every effort is made to ensure the accuracy of the information in this manual, Broadcast Electronics accepts no responsibility for any errors or omissions. Broadcast Electronics reserves the right to modify and improve the design and specifications of the equipment in this manual without notice.

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