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Electro-Metrics EM-2115 Instruction Manual

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INSTRUCTION MANUAL
INTERFERENCE
ANALYZER
MODEL EM-2115
(EMC-30)

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  • Page 1 INSTRUCTION MANUAL INTERFERENCE ANALYZER MODEL EM-2115 (EMC-30)
  • Page 2 INSTRUCTION MANUAL THIS INSTRUCTION MANUAL AND ITS ASSOCIATED INFORMATION IS PRO- PRIETARY. UNAUTHORIZED REPRO- DUCTION IS FORBIDDEN.  2002 ELECTRO-METRICS CORP. INTERFERENCE ANALYZER ELECTRO-METRICS MODEL EM-2115 (EMC-30) SERIAL NO: N/A ELECTRO-METRICS CORPORATION 231 Enterprise Road, Johnstown, New York 12095 Phone: (518) 762-2600 Fax: (518) 762-2812 EMAIL: info@emihq.com...
  • Page 3 WARRANTY This Model EM-2115 Interference Analyzer is warranted for a pe- riod of 12 months (USA only) from date of shipment against defec- tive materials and workmanship. This warranty is limited to the repair of or replacement of defective parts and is void if unauthor- ized repair or modification is attempted.

  • Page 4: Table Of Contents

    ELECTRO-METRICS EM-2115 TABLE OF CONTENTS TABLE OF CONTENTS SECTION TITLE PAGE Installation 0.1.1 Benchtop Operation 0.1.2 Rack Mounting Introduction And Specifications S1-1 Introduction S1-1 Receiver Specifications S1-2 Operating Instructions S2-1 Operational Precautions S2-1 2.1.1 Power Source Selector S2-1 2.1.2 Tuning Mode Selection Switch S2-1 2.1.3...
  • Page 5 ELECTRO-METRICS EM-2115 TABLE OF CONTENTS TABLE OF CONTENTS SECTION TITLE PAGE 2.5.5 EM-2115 Device Dependent Commands S2-23 2.5.6 Frequency Tuning S2-25 2.5.7 Amplitude And Frequency Read S2-25 2.5.8 Computer Software Available for EM-2115 S2-26 External X-Y Recorder Operation S2-26 2.6.1...
  • Page 6 ELECTRO-METRICS EM-2115 TABLE OF CONTENTS TABLE OF CONTENTS SECTION TITLE PAGE 4.4.1 Power Supply Verification S4-8 4.4.1.1 Regulated DC Voltage Checks S4-8 4.4.1.2 Power Supply Board A14A1 Adjustments S4-9 4.4.2 Detection/Metering Circuitry Adjustment/Verification S4-10 4.4.2.1 Signal Amplitude Digital Meter Adjustment/Verification S4-10 4.4.2.2...
  • Page 7 ELECTRO-METRICS EM-2115 TABLE OF CONTENTS APPENDICES APPENDIX TITLE PAGE Troubleshooting Microprocessor Assembly A1A3 4A-1 4A-1.0 Introduction 4A-1 4A-2.0 Failure Diagnosis 4A-1 4A-3.0 Troubleshooting Techniques 4A-1 Description Front Panel Controls A-1.0 Control Function A-2.0 Attenuator A-2.1 Attenuation Switches A-2.2 Attenuation Indicator A-3.0...
  • Page 8 ELECTRO-METRICS EM-2115 TABLE OF CONTENTS APPENDICES APPENDIX TITLE PAGE B-2.3 EM-2115 To Oscilloscope Connectors B-2.4 AM Video Connector A13J5 B-2.5 FM Video Connectors A13J6 B-2.6 X-Y Plotter Connector A13J3 B-2.8 Antenna Connector A13J1 B-2.7 GPIB Connector A13J4 B-2.9 Power Connector (A14J2 B-2.10...
  • Page 9 Filters E-24 E-4.1 High/Low Pass Filters E-24 E-4.2 Tunable Rejection Filters E-25 E-5.0 Line Impedance Stabilization Networks E-25 E-5.1 LISNs Available For Use With EM-2115 E-25 E-6.0 CIG-25 E-26 E-7.0 EM-2116 Battery Pack/Charger E-27 E-8.0 EM-4206 Broadband Preamplifier E-28 E-9.0...
  • Page 10 ELECTRO-METRICS EM-2115 TABLE OF CONTENTS LIST OF TABLES TABLE TITLE PAGE EM-2115 Specifications S1-3 Typical Broadband Correction Factors Vs Bandwidth S2-11 Sample Time Control Settings Vs Dump Rate S2-13 CISPR Conversion Factors S2-15 IF Bandwidth Vs Frequency Difference For Broadband/Narrowband Determination...
  • Page 11 Front Panel EM-2115 S4-37 Rear Panel EM-2115 S4-39 Top View EM-2115 S4-41 Bottom View EM-2115 S4-43 EM-2115 Rear View, Power Supply Removed S4-45 A14 Power Supply Assembly S4-47 Rear Panel Antenna Connector S4-48 A13J3 Plotter Connector S4-49 EM-2115 Signal Level Chart...
  • Page 12 Interface P.C. Board (A16) R-8631-C H.24 Microprocessor P.C. Board (A1A3) R-8611-1 H.25 Interconnection Diagram R-8718-A H.26 Power Supply Filter Assembly (A15) D-8634-B H.27 Power Supply (A14) R-8625 H.28 High Voltage Converter C-8861 Note: For schematics Contact Electro-Metrics for availability. (EM2115-0.1-ix)

  • Page 13: Installation

    ELECTRO-METRICS EM-2115 0.1 INSTALLATION SECTION 0.1 EM-2110 INSTALLATION 0.1 Installation The EM-2110 is designed for either benchtop operation or installation in a con- ventional 19-inch equipment rack. 0.1.1 Benchtop Operation When operating the EM-2110 in a free-standing mode (i.e., benchtop operation) allow sufficient clearance at the top, rear, and sides of the unit to permit effective convec- tion cooling to occur.
  • Page 14 ELECTRO-METRICS EM-2115 0.1 INSTALLATION 4) One (1) 6-32 X 3/8. 5) One (1) 4-40 X 3/8. NOTE: The left-hand slide mounting assembly contains a notch in the front bracket for the RF Input Cable. Install the slide assemblies to each side of the unit using six (6) 8-32 X 1/4 screws.

  • Page 15: I Introduction And Specifications S1-1

    EM-2115 INTRODUCTION AND SPECIFICATIONS 1.1 Introduction The EM-2115 Interference Analyzer performs emission and susceptibility testing to MIL- STD-461 and MIL-STD-462, CISPR, plus other applicable military, government, and commer- cial (both domestic and international) standards from 9 kHz to 1000 MHz.

  • Page 16: Receiver Specifications S1-2

    (log video presentation--external oscilloscope) method in conjunction with the front panel digital meter. The bandwidths of the EM-2115 have been tailored to conform fully with MIL-STD- 462D and the October 1984 draft of British DEF-STAN 59-41 (Part 3)/2, as well as ANSI C63.2.
  • Page 17 ELECTRO-METRICS EM-2115 1.0 INTRODUCTION/SPECIFICATIONS TABLE 1.1 EM-2115 SPECIFICATIONS FUNCTION/CHARACTERISTICS DESCRIPTION/PERFORMANCE Equipment: EM-2115 Interference Analyzer Type: Superheterodyne Final IF Frequencies: Bands 1-7: 175 kHz. Bands 8-10: 1.6 MHz. Bands 11-15: 8.7 MHz. IF Bandwidths: Refer to the following table. SPECIFICATION LIMITS...
  • Page 18 ELECTRO-METRICS EM-2115 1.0 INTRODUCTION/SPECIFICATIONS TABLE 1.1 CONT'D EM-2115 SPECIFICATIONS FUNCTION/CHARACTERISTICS DESCRIPTION/PERFORMANCE RF Band Frequency Ranges: FREQ. RANGE FREQ. (MHz) 0.009-0.035 0.035-0.075 0.070-0.150 0.120-0.250 0.250-0.500 0.5-1.1 1.1-2.4 2.4-5.5 5.5-12.5 12.5-30.0 25-50 50-100 100-200 200-500 500-1000 RF Band Selection: Dual pushbutton, 8-digit LED display indicates actual frequency range covered.
  • Page 19 ELECTRO-METRICS EM-2115 1.0 INTRODUCTION/SPECIFICATIONS TABLE 1.1 CONT'D EM-2115 SPECIFICATIONS FUNCTION/CHARACTERISTICS DESCRIPTION/PERFORMANCE Amplitude Display: 3-digit ½-inch LED with 1 dB resolution plus uncalibrated 2-inch analog meter for ease in tun- ing. Detector Functions Peak: Direct-peak response, calibrated in terms of rms equivalent sinewave.
  • Page 20 ELECTRO-METRICS EM-2115 1.0 INTRODUCTION/SPECIFICATIONS TABLE 1.1 CONT'D EM-2115 SPECIFICATIONS FUNCTION/CHARACTERISTICS DESCRIPTION/PERFORMANCE Additional Outputs: Post IF: Bands 1-10: 3 mVrms into 50. Bands 11-15: 1 mVrms into 50. Pre IF: 1 mV nominal into 50. AM Video: 50 mVpk into 91.
  • Page 21 ELECTRO-METRICS EM-2115 1.0 INTRODUCTION/SPECIFICATIONS Weight: 30 kg (66 lbs.). TABLE 1.1 CONT'D EM-2115 SPECIFICATIONS FUNCTION/CHARACTERISTICS DESCRIPTION/PERFORMANCE Power Requirements: 115 VAC/220 VAC ±10% 50-60 Hz. 75 Watts at 115 VAC 60 Hz nominal. Optional EM-2126 Battery Pack/Charger Mod- ule required for field operation.
  • Page 22 ELECTRO-METRICS EM-2115 1.0 INTRODUCTION/SPECIFICATIONS TABLE 1.2 RECEIVER SENSITIVITY 1 VS BANDWIDTH 2 RF FREQ. SENS. SENS. SENS. SENS. SENS. SENS. RANGE @ BW @ BW @ BW @ BW @ BW @ BW WB 3 200 Hz 1 kHz 10 kHz...
  • Page 23 ELECTRO-METRICS EM-2115 1.0 INTRODUCTION/SPECIFICATIONS TABLE 1.3 RECEIVER CISPR SENSITIVITY 1 VS BANDWIDTH RF FREQENCY SENSITIVITY SENSITIVITY SENSITIVITY RANGE @ BANDWIDTH @ BANDWIDTH @ BANDWIDTH 6 dB) 200 Hz 6 dB) 9 kHz 6 dB) 120 kHz 9-35 kHz ----------------------- -----------------------...
  • Page 24 ANSI C63.2-1980, CISPR Publication 16, and related VDE requirements. 2. The circuitry preceding the digital meter of the EM-2115 is the electronic equivalent of the critical- ly-damped mechanical meter with the characteris- tics noted. ALL SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE...

  • Page 25: Operating Instructions

    ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS SECTION II EM-2115 OPERATING INSTRUCTIONS CAUTION READ THIS SECTION BEFORE OPERATING THE EM- 2115. IMPROPER OPERATION MAY DAMAGE THE IN- STRUMENT.   READ THIS FIRST 2.1 Operational Precautions 2.1.1 Power Source Selector An AC Power Source Selector is incorporated into the AC Power Input Connector on the rear panel.

  • Page 26: Power Supply S2-2

    CAUTION The input circuitry of this instrument cannot handle high signal levels. Do not connect the AC power line to the EM-2115 input without an intervening protective circuit such as a power frequency rejection filter and/or attenua- tor, otherwise serious damage wil result! A suitable filter is either the Elec- tro-Metrics Model EM-HPF-120 High Pass Filter or Model EM-7508 Notch Rejection Filter for the 120 VAC, 60 Hz power line.

  • Page 27: Fuse Specifications S2-3

    The EM-2126 Battery/Charger Module is a separate free-standing unit that is normally placed beneath the EM-2115 when used. A power connection cable from the Battery Module connects to A14J3 on the rear panel of the receiver. Refer to the EM-2126 instruction manual for complete operating and charging instructions.

  • Page 28: Pre-Operational Calibration S2-4

    Connect the power cord between the A14J2 Power Connector and the AC power source. Turn on the EM-2115 by pushing in the front panel Power Switch. The LED indi- cators should be lighted when the unit is on. Allow a minimum warm-up time of 30 minutes.

  • Page 29: Local Mode Of Operation S2-6

    Repeat Steps b thru d for Frequency Range 2-15. 2.4 Local Mode Of Operation In the Local Mode of Operation, the EM-2115 is operated and controlled using the front panel controls of the receiver. The information in Sections 2.4.1 thru 2.4.7 will be useful when operating in the Local Mode of Operation.

  • Page 30: Amplitude And Frequency Measurement S2-6

    ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS 2.4.1 Amplitude And Frequency Measurement The digital meter of the EM-2115 is used to determine the amplitude of an input signal. However, since the response time of a digital meter is slow compared to an analog meter, the fol-...
  • Page 31 ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS Figure 2.1 Correction Factor Graph For Signals Near Noise (EM2115S2-7)

  • Page 32: Input Attenuation Selection S2-8

    Quasi-Peak measurements. 2.4.4 IF Bandwidth Selection The circuitry of the EM-2115 permits only three valid IF bandwidths per Frequency Range selected, thus preventing the possibility that an invalid bandwidth will be selected. The bandwidth selected is indicated by an illuminated LED indicator.

  • Page 33: Bandwidth Selection Criteria S2-9

    ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS (LED) will flash rapidly unless the correct quasi-peak IF bandwidth is selected for the Frequency Range being used. While measurements can be made in the Quasi-Peak position with an invalid Q.P. IF bandwidth selected, the measurements will not conform to CISPR and related specifica- tions/requirements.

  • Page 34: Signal Measurements S2-10

    ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS measuring strong narrowband signals. It is not recommended for weak narrowband signal meas- urements. The assumptions listed in a thru c can also be applied when comparing amplitude meas- urements made in the medium and widest bandwidths. The only exception is that the possibility of the wideband measurement being influenced by nearby signals, other broadband signals, or higher noise levels.

  • Page 35: Detector Mode Selection S2-11

    Refer to 2.4.6 for information on the use and function of each detector mode. 2.4.6 Detector Mode Selection The five detector functions for the EM-2115 (Peak, Quasi-Peak, RMS, Average, Slideback) are used to determine, in conjunction with the IF bandwidths, the character and ampli- tude of the received signal.
  • Page 36 NOTICE Before making amplitude measurements with any of the five detector functions, the EM-2115 should be calibrated (refer to 2.3.3.1). All valid amplitude measurements must be made using the front panel digital meter. The front panel analog meter is uncalibrated and used for relative indication only.

  • Page 37: Peak Detector S2-12

    ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS Table 2.2 Sample Time Control Settings Vs Dump Rate Sample Time Dump Rate Remarks Control Setting FULL CCW to Click Stop Detector is never dumped. Useful for obtaining the Decay Rate: 1 dB/2 s. highest peak level of an...

  • Page 38: Quasi-Peak Detector S2-14

    To obtain a broadband reading, the Broadband Correction Factor (Appendix D, data ap- plicable only for the EM-2115 with the serial number noted) is added to the digital meter indica- tion. The resultant broadband measurement is in terms of dB(µV/MHz) (dB above one microvolt per MHz of bandwidth).

  • Page 39: Quasi-Peak Measurement Technique S2-15

    18.5 The CISPR Conversions Factors are used for correlating the output of an ex- ternal Impulse Generator to the digital meter reading of the EM-2115 in the QUASI-PEAK Detector mode. The factor is based upon the CISPR IF band- widths/detector time constants of the EM-2115 versus the pulse repetition rate of the external Impulse Generator.
  • Page 40 The amplitude indication on the digital meter will then be the CISPR level into the 50 input impedance of the EM-2115. If any pickup devices (antennas, probes, etc.) are used, the cor- rection factors of the device must be added to the indicated meter reading to obtain the correct amplitude level.

  • Page 41: Rms Measurement Technique S2-17

    Select the IF bandwidth required for the Frequency Range being used. Always calibrate the EM-2115 before taking any measurements (refer to 2.3.2.1). Use the procedure given in 2.4.1 to tune in a signal on the digital meter. The digital meter amplitude reading will be in terms of dB(µV).

  • Page 42: Average Detector S2-18

    ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS Power Density dB(W/m -146 dB Power Density dB(mW/cm -156 dB 2.4.6.4 Average Detector The Average (Carrier) Detector mode provides a time averaged (150 ms time constant) measurement of the input signal amplitude within the selected IF pass band of the receiver. The detector crest factor is 50 dB minimum The detector is calibrated in terms of the rms equivalent of the signal amplitude level.

  • Page 43: Slideback Detector Aural (Audio) Measurement Technique S2-19

    Select the Slideback Detector mode, the widest IF Bandwidth available for the Frequency Range selected, and set the Threshold Control FULL CCW. Set the EM-2115 for maximum dynamic range using the procedure in 2.4.6.2.1 Step c. With the signal tuned-in, hold the earphones to your ear and adjust the front panel Audio Volume Control for a loud audio signal.

  • Page 44: Broadband/Narrowband Determination S2-20

    ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS The above amplitude indication is in terms of dB(µV). To determine the broad- band amplitude measurement (in dB(µV/ MHz)), add the broadband correction factor to the indicated meter reading. In addition to broadband correction factors, correction factors for any pickup devices being used (antennas, probes, etc) must added to the indicated amplitude levels.

  • Page 45: Computer Operation S2-21

    ASCII commands over the GPIB. EM-2115 Device Dependent Commands are listed in Sec- tion 2.5.5. In each case listed, the EM-2115 is a listener as defined in the IEEE Std 488-1978. Some of the functions controlled through the Bus are: a.

  • Page 46: Remote Mode Of Operation S2-22

    OUTPUT 7ZZ;"LLO" LOCAL: OUTPUT 7ZZ;"GTL" Where ZZ is the current bus address of the EM-2115. If a Local Lockout has not been commanded, the EM-2115 may be brought into the local mode by pushing the front panel Local Switch. (EM2115S2-22)
  • Page 47 ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS 2.5.5 EM-2115 Device Dependent Commands EM-2115 Device Dependent Commands are listed in Table 2.5. This device follows the ANSI/IEEE Std 488-1978 standard for codes, formats, protocols, and common commands. Input and output buffer lengths are 80 characters long. The parser strips commands from the input buffer and implements them in sequential fashion.
  • Page 48 ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS DETECTOR "DET:PK" Selects Peak Detector. "DET:CSPR" Selects Quasi-Peak Detec- "DET:AV" Selects Average Detector. "DET:RMS Selects RMS Detector. "DET:SL" Selects Slideback Detec- tor. CALIBRATE "CAL" Selects standard calibra- tion sequence. DUMP/DWELL "DMP:ON" Dumps Peak Detector continuously.
  • Page 49 Tuning the EM-2115 through the bus also forces a reading of the A/D converter but after a preset BW delay. Each time the EM-2115 is set as a talker, the microprocessor outputs the DVM reading which was sampled by a previous DUMP command or FREQUENCY TUNE command.
  • Page 50 Contact Electro-Metrics for availability and price. 2.6 External X-Y Recorder Operation The EM-2115 can be used with either a single or dual pen X-Y recorder. All connnec- tions to the X-Y recorder are thru the 11 pin Plotter Connector (A13J3) on the rear panel.
  • Page 51 Repeat Steps e thru g until no further adjustments are required. 2.6.2 EM-2115/X-Y Recorder Operation Set the EM-2115 front panel controls as required for the test being performed -- e.g., Bandwidth, Detector, Attenuator, etc. NOTE:...
  • Page 52 The noise, various slideback levels, and external I.G. levels can be plotted on the chart paper to produce convenient calibration lines. 2.7 External Oscilloscope Operation The EM-2115 can produce a spectrum analyzer type display covering the frequency range of the receiver using an external oscilloscope. 2.7.1 EM-2115 Oscilloscope Output Connectors...
  • Page 53 2.7.2 EM-2115/Oscilloscope Operation Connect the EM-2115 to the oscilloscope with both the vertical and horizontal inputs DC coupled. Set the oscilloscope for External Horizontal or X-Axis (not External Trigger). The oscilloscope must have an external input to the horizontal amplifier;...
  • Page 54 The frequency of signals appearing on the CRT display can be determined by tuning the receiver and placing the marker notch over the the signal in question. The frequency of the signal can then be read directly from the EM-2115 front panel LED Frequency Display, if the Scan Mode is TEMPORARILY switched to Manual.
  • Page 55 ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS The amplitude of signals appearing on the CRT can be determined by using the Threshold Control (Slideback position only) of the receiver in conjunction with the front panel digital meter indication. Starting with the Threshold Control FULL CCW, rotate the Threshold Control CW (trace line will move up the CRT display) until the trace line intersects the peak of the signal in ques- tion.
  • Page 56 Interconnection coaxial cables should be of the shortest possible length or be of known loss. A source impedance of 50 must be presented to the RF input of the EM-2115 for accurate amplitude measurements. In addition, some Impulse Generators re- quire a padded output in order to present a 50...
  • Page 57 EM-2115 3.0 PERFORMANCE CHECK NOTE: The Electro-Metrics Model EM-4320 Impulse Generator is de- signed to present a 50 source impedance on its output. Some models of Impulse Generators are calibrated in terms of equivalent peak cw voltage while the majority are in terms of equivalent rms voltage. A difference of 3 dB exists between the two types of Impulse Generators.
  • Page 58 The receiver will not calibrate if the Scan Mode Switch is set to either Continuous or Single. Apply a CW signal at an input level of +40 dB(µV) at the test frequency selected to RF Input of the EM-2115. (EM2115S3-3)
  • Page 59 EM-2115 3.0 PERFORMANCE CHECK Peak the signal for a maximum indication on the front panel analog meter (use the method described in Paragraph 3.3.4). Verify that the digital meter reads +40 dB(µV) ±2.0 dB. Repeat Steps b thru d for Frequency Ranges 1-10 (0.009-30 MHz) for each of the three frequency test points selected.
  • Page 60 FREQUENCY RANGE .........0.009-0.035 MHz. Perform the calibration sequence described in 3.4.1 Step b. Apply a CW signal at the test frequency selected to the RF Input of the EM-2115. Set the signal input level at +40 dB(µV)(100 µV). Peak the signal source for a maximum indication on the front panel analog meter (use the method described in Paragraph 3.3.4).
  • Page 61 FREQUENCY RANGE .........0.5-1.1 MHz. FREQUENCY INDICATION .......0.800 MHz Apply a 800 kHz CW signal via a 10 dB Step Attenuator to the EM-2115 RF In- put connector. Set the external Step Attenuator for 0 dB of attenuation and the Signal Generator output level at +120 dB(µV)(1.0 V).
  • Page 62 With no signal applied to the receiver, record the residual noise level displayed on the digital meter. Apply a CW signal at the test frequency selected to the EM-2115 RF Input con- nector via the Step Attenuators. Set the signal input level approximately 10 dB above the residual noise level noted in Step c.
  • Page 63 With no signal applied to the receiver, record the residual noise level displayed on the digital meter. Apply an impulse signal to the EM-2115 RF Input connector. Increase the impulse signal input level until the digital meter reads 3 dB above the residual noise level noted in Step c.
  • Page 64 Vertical Output BNC Connector (A13J9) and ground (negative lead). Apply a 0.100 MHz CW signal at an input level of +40 dB(µV) to the EM-2115 Input Connector. Peak the signal for a maximum indication on the front panel ana- log meter.
  • Page 65 +60 dB(µV) ±2.0 dB. If not, adjust the in- put signal level. This is the reference point for the following procedure. Tune the Signal Generator to twice (2X) the IF plus the EM-2115 indicated fre- quency.
  • Page 66 Thus for the example shown, the Image Frequency is 372 kHz. Increase the Signal Generator output level by 30 dB. Tune the Signal Generator for a peak indication on the analog meter of the EM-2115. Subtract the digital meter reading from the +60 dB(µV) reference indication and add 30 dB to the difference.
  • Page 67 Increase the Signal Generator output level by 30 dB. Tune the Signal Generator for a peak indication on the analog meter of the EM-2115. Subtract the digital meter reading from the +60 dB(µV) reference indication and add 30 dB to the difference. This figure will be the IF Rejection for the Frequency Range selected.
  • Page 68 EM-2115 3.0 PERFORMANCE CHECK (EM2115S3-13)
  • Page 69 Ground the person working on the board through the use of wrist straps or similar static grounding systems. When being returned to Electro-Metrics, pack the board in protective packaging that protects against ESD damage. Take similar precautions for board storage outside the receiver.
  • Page 70 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION 4.2 Instrument Access/Disassembly/Assembly (Refer to Figures 4.1 thru 4.5, Pages 4-33 thru 4-43) 4.2.1 Top/Bottom Cover Removal 4.2.1.1 Top Cover Removal Position the receiver top side up. Remove the five retaining screws (4-40 x 3/16) that secure the cover to the receiv- Slide the cover back and out of the slots holding the cover in place.
  • Page 71 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION 2) A2P4B from A16J4B. 3) A2P5 from A16J5. 4) A2P6B from A16J6B. 5) A2A16A6-P4A from A16J4A. 6) A2A16A5-P6A from A16J6A. 7) A2J1 (flexible coaxial cable) from RF Tuner. 8) A2J2 (flexible coaxial cable) from RF Tuner.
  • Page 72 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION The RF Tuner Top Cover is now free for removal from the RF Tuner Assembly. To install the RF Tuner Top Cover, reverse the procedure given above. 4.2.3 Submodule Assembly Removal NOTE: This assembly contains the A3 IF Amplifier Module, A4 Log Detector Module, A5 Discriminator Module, A6 NB Filter Module.
  • Page 73 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Remove the eight screws that secure the top brace to the four submodule assem- blies. Remove the interconnection subminiature coaxial cables between the individual submodules. To assemble a Submodule Assembly, reverse the above procedure except for the...
  • Page 74 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION 10) A1A3J6 (flexible coaxial cable) from Microprocessor Board The Front Panel Assembly is now free for removal from the receiver. To install the Front Panel Assembly, reverse the above procedure. 4.2.5 Prescaler Module (A12) Removal Remove the top and bottom covers.
  • Page 75 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION 2) P3B from A15A1J3B (Power Supply Filter Board A15A1). The Power Supply Assembly is now free for removal. To install the Power Supply Module, reverse the above procedure. 4.3 Preliminary The calibration and alignment procedures are normally used to recalibrate-align the EM- 2115 after repair-replacement work is performed or when the performance test procedures of Section III indicate that the receiver operation is outside specification limits.
  • Page 76 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Equipment required: Digital Voltmeter. 36 pin double-sided extension board (ECB-30), one (1) required. 4.4.1.1 Regulated DC Voltage Checks Set the front panel controls as follows: DETECTOR ...........AVERAGE SAMPLE TIME CONTROL ......Mid-range FREQUENCY RANGE .........0.009 -0.035 MHz FREQUENCY INDICATION .......0.022 MHz...
  • Page 77 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Remove the Power Supply Module (A14) 4.2.6. Leave Connector Plugs P4 and P3B connected to A14J4 and A15A1J3B respectively. Reconnect the receiver to the AC power source. Turn on the unit and measure the voltage on A13J2-d (Remote Connector). The voltmeter should indicate +12.0 ±0.1 VDC.
  • Page 78 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION The following procedure is used to verify the operation of the Detector Board (A8) plus the digital amplitude metering circuitry located on the Microprocessor Board (A1A3) and Front Panel Board (A1A2). NOTE: For ease in measuring and performing adjustments located on the Microprocessor Board (A1A3), it is advisable to remove the Front Panel Assembly (A1) from the receiver.
  • Page 79 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION NOTE: If the +1.5 VDC does not appear on the points noted in Step f, there may be a fault or malfunction within the Detector circuit- ry. In this case substitute an external power source (DC power supply or battery) at A8-16, with the Detector Board removed.
  • Page 80 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Monitoring the voltage on A8-16, switch the Detector to Peak. The voltmeter should indicate 0.00 VDC. Monitoring the voltage on A8-16, switch the Detector to Slideback. The voltmeter should indicate 0.00 VDC. Monitoring the voltage on A8-70, switch the Detector to Quasi-Peak. The voltme- ter indication should decay to <0.10 VDC.
  • Page 81 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION The Digital Voltmeter monitoring the voltage on A8-16 should indicate +1.50 VDC ±0.05 VDC. If not, adjust A4A1-R51. Decrease the signal input level by 60 dB to +38 dB(µV), the voltmeter should in- dicate +0.115 VDC ±0.05 VDC. If not, adjust A4A1-R45.
  • Page 82 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION SIGNAL INPUT LEVEL DC OUTPUT VOLTAGE @ A8-16 (±0.05 VDC) 175 kHz 1.6 MHz 8.7 MHz @A4-J3 @A4J2 @A4J1 +118 dB(µV) +117 dB(µV) +111 dB(µV) +1.96 VDC +108 dB(µV) +107 dB(µV) +101 dB(µV) +1.73 VDC +98 dB(µV)
  • Page 83 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Place the Detector Board (A8) onto the 36 pin double-sided extension board and connect a Digital Voltmeter to A8-16. Set the front panel controls as follows: DETECTOR ...........PEAK BANDWIDTH ..........200 Hz ATTENUATION ...........0 dB FREQUENCY RANGE .........0.009-0.035 MHz.
  • Page 84 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION The Digital Voltmeter monitoring the voltage on A8-70 should indicate +1.50 VDC ±0.10 VDC. If not, adjust A6-R14. Set the Bandwidth to the Wideband position of the frequency range selected. The Digital Voltmeter should indicate +1.50 ±0.10 VDC. If not, adjust A6-R4.
  • Page 85 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION level, if required (usually ±1.0 dB), to obtain a suitable reference on the RMS Voltmeter. Check the IF bandwidth using the procedure given below. 1) Increase the frequency of the Signal Generator until the RMS Voltmeter reads - 6 dB down from the reference point.
  • Page 86 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION 3) Middle IF Bandwidth: 10 kHz, specification limit: 10 kHz ±10%. IF center fre- quency adjustment: L3004. 4) Narrowest IF Bandwidth: 1 kHz, specification limit: 1 kHz ±10%. Set the Frequency Range to 20-45 MHz (11) and repeat Steps e thru j for the 8.7 MHz IF channel, except for the following: 1) Apply a 8.700 MHz signal at an input level of 75 dB(µV) to A3J1.
  • Page 87 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION should indicate +1.50 ±0.023 VDC. If not, adjust A6R59 (0.1 Narrowband Filter Module A6). NOTE: If A6R59 is adjusted, it is also necessary to adjust A6R48. (re- fer to the 0.1 Narrowband Filter Alignment/Check, Section 4.4.4).
  • Page 88 Using a Digital Voltmeter, check the voltage on A2A16A2-41/42. The Voltmeter should indicate +4.8 VDC ±0.2 VDC. If this voltage is not present, contact Elec- tro-Metrics or your nearest Electro-Metrics representative for further help and in- formation. Remove the subminiature coaxial cable from A2A16A2-J2. Connect a Signal Generator to A2J2.
  • Page 89 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Monitoring the signal on A2J2 (PRE-IF Output) with an RMS Voltmeter (50 input impedance required), peak A2A16A2-T2002 for a maximum indication on the Voltmeter. The Digital Voltmeter monitoring the voltage on A8-16 should indicate +1.50 VDC ±0.023 VDC.
  • Page 90 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Place the Tune Control Board (A10) onto the 36 pin double-sided extension board. Set the front panel controls as follows: DETECTOR ...........PEAK BANDWIDTH ..........Wideband position of the frequency range selected. ATTENUATION ...........0 dB FREQUENCY RANGE .........0.009-0.035 MHz.
  • Page 91 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Repeat Steps i and j until no further adjustments are required. Monitoring the voltage on A10-27/28, set the Main Tuning Control FULL CW, the voltmeter should indicate +1.50 ±0.10 VDC. If not, adjust A10-R74. Set the Main Tuning Control FULL CCW, the voltmeter should indicate 0.00 VDC ±0.01 VDC.
  • Page 92 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION DETECTOR ...........PEAK BANDWIDTH ..........9/10 kHz ATTENUATION ...........0 dB FREQUENCY RANGE .........0.009-0.035 MHz. FREQUENCY DISPLAY ......0.022 MHz Using a Digital Voltmeter, measure the voltage on A2A16A2U2-10. The voltme- ter should indicate +7.50 VDC ±0.01 VDC. If not, adjust A2A16A2-R85.
  • Page 93 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Monitoring the voltage on A11-65/66, vary the Sweep Rate Control from "CAL" to "MAX". The voltmeter should measure a voltage ranging from approximately 0.0 V to 8 V ±0.1 VDC respectively. Verify the sweep times given in Table 4.2 by monitoring and noting when the sweep voltage on A11-61/62 stops/resets.
  • Page 94 Electro-Metrics or an Electro-Metrics factory representative for repair due to the complex nature of this circuitry. If the Prescaler Module is found to be de- fective, it is recommended that the it be removed and returned to Electro-Metrics for repair or replacement.
  • Page 95 Step e and f. Result 2: No LO Input: Incorrect or no Preset Numbers. Solution: 1) Return receiver to Electro-Metrics or nearest Electro-Metrics representative, or 2) Contact Electro-Metrics or nearest Electro- Metrics representative for assistance or further in- formation.
  • Page 96 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Step c-2 for RF Frequency Ranges 1-10 using the information in Table 4.4 (RF Frequency Ranges 1-10 only). Remove the subminiature coaxial cable from A1A3-J5 (Divide By 100 Input) on the Microprocessor Board (A1A3) and using an external Signal Generator, repeat Step c-2 for RF Frequency Ranges 11-15 using the information in Table 4.5 (RF...
  • Page 97 9) A2J3 (flexible coaxial cable) to RF Tuner. 10) A2J5 (flexible coaxial cable) to RF Tuner. Turn-on the receiver. Do Not Calibrate The EM-2115, i.e by pushing the front panel CAL Switch. Leave the receiver in the "UNCAL" mode, e.i. UNCAL indi- cator "lighted"...
  • Page 98 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION 4.4.11.2 Stator Board (A2A16A1) Mixer Adjustment/Verification Set the front panel controls as follows: DETECTOR ...........PEAK BANDWIDTH ..........200 Hz ATTENUATION ...........0 dB FREQUENCY RANGE .........0.035-0.075 MHz FREQUENCY DISPLAY ......0.05500 MHz Using an external Signal Generator, apply a 0.0550 MHz CW signal to A2J4 (RF Input).
  • Page 99 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION NOTE: 1. Do Not Adjust RF Frequency Bands 1-9 unless the proce- dure below does not check out. 2. To obtain access to the band being adjusted, it may be necessary to remove other bands from the RF Tuner.
  • Page 100 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION 3) Set the Main Tuning Control FULL CW. 4) The front panel Frequency Display should indicate the high end point of RF Frequency Band 1 (0.035 MHz). If not, refer to Table 4.6 and adjust the compo- nent listed under the "High"...
  • Page 101 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION FR-6 T0601 A2A6 0.500 MHz 1.100 MHz L0602 L0603 FR-7 T0704 T0701 A2A7 1.100 MHz 2.400 MHz L0702 L0703 FR-8 T0804 T0801 A2A8 2.40 MHz 5.50 MHz L0802 L0803 FR-9 T0904 T0901 A2A9 5.50 MHz 12.50 MHz...
  • Page 102 Due to the critical nature of these circuits, field repair is not recommended. Schematic diagrams are included (Appendix H) as an aid in understanding the operation of the EM-2115 and for emergency repair only. Two options are recommended:...
  • Page 103 4-43 Rear View EM-2115 with A14 Power Supply Assembly removed 4-45 A14 Power Supply Assembly 4-47 FIGURE 4.1 FRONT PANEL EM-2115 CALLOUT NUMBER CODE Attenuation Indicator Fine Tuning Control Range Selection Switches, Up/Down AFC Switch Frequency Range Display Scan Mode Switch...
  • Page 104 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION (EM2115S4-36)
  • Page 105 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Figure 4.1 Front Panel EM-2115 FIGURE 4.2 REAR PANEL EM-2115 CALLOUT NUMBER CODE A14 Power Supply Assembly A14J2 AC Power Input Connector/Fuse Holder/Power Selector Power Supply Heatsink Assembly Grounding Strip A13J5 AM Video Connector (BNC)
  • Page 106 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION (EM2115S4-38)

  • Page 107: A6 0.1 Narrowband Filter Module

    EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Figure 4.2 Rear Panel EM-2115 FIGURE 4.3 TOP VIEW EM-2115 CALLOUT NUMBER CODE (A2 RF TUNER COVER REMOVED) A14 Power Supply Compartment (Shielded) A13 Rear Panel Compartment (Shielded) Submodule Assembly A4 Log Detector Module A3 If Amplifier Module A5 Discriminator Module A6 0.1 Narrowband Filter Module...
  • Page 108 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION (EM2115S4-40)
  • Page 109 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Figure 4.3 Top View EM-2115 (A2 RF Tuner Assembly Cover Removed) FIGURE 4.4 BOTTOM VIEW EM-2115 CALLOUT NUMBER CODE A14 Power Supply Compartment (Shielded) A15A3 Power Supply Filter Board A16 Interface Board A15A3J1 A2 RF Tuner Assembly...
  • Page 110 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION (EM2115S4-42)
  • Page 111 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Figure 4.4 Bottom View EM-2115 FIGURE 4.5 REAR VIEW EM-2115 CALLOUT NUMBER CODE A14 POWER SUPPLY ASSEMBLY REMOVED Grounding Strip A15A1-J3A/B A15A1 Power Supply Filter Interconnect Board A15A1-J1 A15A1-U2 A15A1-U2 (Partially Hidden By Ribbon Cable)
  • Page 112 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION (EM2115S4-44)
  • Page 113 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Figure 4.5 Rear View EM-2115 (A14 Power Supply Assembly Removed) FIGURE 4.6 A14 POWER SUPPLY ASSEMBLY EM-2115 CALLOUT NUMBER CODE A14T1 AC Power Transformer A14J2 AC Power Input Connector/Fuse Holder/Power Selector A14C1 9000 µF/40 VDC A14C2 9000 µF/40 VDC...
  • Page 114 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION Figure 4.6 A14 Power Supply Assembly EM-2115 (EM2115S4-46)
  • Page 115 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION A13J1 REAR PANEL ANTENNA CONNECTOR A13J1 PIN DESIGNATION FUNCTION GROUND + RAW BD 1000 + DETENT +12 VDC FILTERED BD 0100 + DETENT BD 0010 BD 0001 SUS-1 SUS-2 SPARE SPARE SPARE SPARE Figure 4.7...
  • Page 116 EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION A13J3 PLOTTER CONNECTOR A13J3 PIN FUNCTION DESIGNATION SPARE X OUT (+) (0-1.5 V) SHIELD GND PEN LIFT COIL (N/O +) X COMM. GND Y COMM. GND Y2 OUT SPARE SPARE SPARE Y1 OUT Figure 4.8...
  • Page 117 TROUBLESHOOTING MICROPROCESSOR ASSEMBLY A1A3 4A-1.0 Introduction The information and procedures in Appendix 4A are used for diagnosing problems on the internal Microprocessor Assembly A1A3 of the EM-2115. 4A-2.0 Failure Diagnosis The firmware for the Microprocessor Assembly contains built-in troubleshooting aids for diagnosing problems with any of the internal PIAs' (Peripheral Interface Adapter).
  • Page 118 +3.0 VDC. If battery is okay, proceed to b. NOTE-1: 1) On the EM-2115, if the battery (BR-1) fails or is momentarily shorted, the RAM will lose all its amplitude calibration data. If this occurs, contact Electro-Metrics or your nearest Electro-Metrics representative for the pro- cedure to follow.
  • Page 119 EM-2115APPENDIX 4A TROUBLESHOOTING MICROPROCESSOR BD ASSEMBLY TABLE 4A.1, CONTD COMMON FAILURES: SYMPTOMS VS CAUSES POSSIBLE CAUSE-2 +5 VDC supply out of tolerance. Must be +5.0 VDC ±0.1 VDC, measured on the Microprocessor Assembly. If +5 VDC supply is okay, proceed to b. NOTE-2: It is possible with a momentary short on the +5 VDC supply to cause the microprocessor plus associated PIAs' and RAMs' to be totally overwritten...
  • Page 120 EM-2115APPENDIX 4A TROUBLESHOOTING MICROPROCESSOR BD ASSEMBLY COMMON FAILURES: SYMPTOMS VS CAUSES SYMPTOM-3 Front Panel Frequency Display has an error message indicated when: 1) Front panel switch is pushed. 2) Remote command given. The error message format will be similar to the following example: Where: 4 means PIA #4 output does not agree with input.
  • Page 121 EM-2115APPENDIX 4A TROUBLESHOOTING MICROPROCESSOR BD ASSEMBLY TABLE 4A.2 ADDRESS MAP EM-2110, EM-2115 ,EM-2135 RECEIVERS HEX MEMORY AD- FUNCTION/ IC DESIGNATION DRESS DESCRIPTION PRIMARY ADDRESS DECODER A15, A14, A13 A1A3-U12 0000-1FFF 8k x 8 STATIC RAM A1A3-U11 2000-3FFF 8k x 8 STATIC RAM...
  • Page 122 EM-2115APPENDIX 4A TROUBLESHOOTING MICROPROCESSOR BD ASSEMBLY ADDRESS MAP EM-2110, EM-2115 ,EM-2135 RECEIVERS BA00 FREQ. DISPLAY EM- 2115, EM-2135 A1A2-U4 INDICATOR LEDs EM- 2110 FP BOARD A1A2-U3 BC00 EM-2115, EM-2135 FP A1A2-U3 BOARD INDICATOR LEDs EM- A1A2-U10 2110 FP BOARD BE00...
  • Page 123 EM-2115APPENDIX 4A TROUBLESHOOTING MICROPROCESSOR BD ASSEMBLY PIA TABLE LISTING EM-2115 BIT # PORT A BIT # PORT B PIA #2 (U25) PIA #2 (U25) Sweep Speed (C) Data Available J2-22 (Keyboard) Full Band (=0) (Busy) (A/D) J2-3 Hold (Sweep) End of Band J2-4...
  • Page 124 EM-2115APPENDIX 4A TROUBLESHOOTING MICROPROCESSOR BD ASSEMBLY PIA TABLE LISTING EM-2115 BIT # PORT A BIT # PORT B PIA #5 (U21) PIA #5 (U21) Sweep Speed (B) SU #5 J1-36 J2-13 Sweep Speed (A) SU #6 Port J1-38 J2-12 CISPR/EM-2115...
  • Page 125 DESCRIPTION FRONT PANEL CONTROLS A-1.0 Control Functions All controls for operation of the EM-2115 Interference Analyzer are located on the front panel. The location of each individual control and indicator is shown in Figure A.1 and described in the following paragraphs.
  • Page 126 EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS A-3.0 Frequency Control A-3.1 Main Tuning Control Type: Two speed planetary drive control having a 10:1 ratio between the two knob sections. Function: To set the tuned frequency of the receiver. The outer knob (10-turn) functions as a Coarse Tune control, with the inner knob (100-turn) used as a Medium Tune control.
  • Page 127 AFC is turned ON. A-5.0 Sweep Function Controls These controls are utilized whenever an optional external X-Y recorder or oscilloscope is being used to record or present the data obtained by the EM-2115. A-5.1 Scan Mode Switch Type: Momentary pushbutton switch.
  • Page 128 EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS A-5.3 Scan Width Control Type: Composition single turn, 280 rotation, 100 k with integrated switch. Switch activated at start of clockwise rotation. Function: Used to set the sweep width of the spectrum display in the Continuous Mode of operation.
  • Page 129 EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS 2) Single: Widest bandwidth, typical sweep time--30 seconds. A-5.5 Marker Switch Type: Momentary pushbutton switch. Indicator: LED, integrated into switch. Color: Red. Function: To activate the marker function for use with the spectrum display on an external oscilloscope.
  • Page 130 EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS A-7.0 Detection Switch Type: Momentary pushbutton switch. Indicator: None. Function: To select one of five detector functions: Peak, Quasi-Peak, RMS, Av- erage, Slideback. NOTE: Refer to Section II Paragraph 2.4.6 Detector Mode Selec- tion (Pages 2-11 thru 2-20) for more complete information on each detector function.
  • Page 131 Color: Red. Function: To indicate the activated detector. A-8.0 Amplitude Indication The EM-2115 utilizes a dual metering system, with digital and analog meters, to indicate the amplitude level of a detected signal. A-8.1 Digital Meter Type: Three digit 1/2-inch LED display.
  • Page 132 UNCALIBRATED, RELATIVE INDICATION ONLY. A-9.0 Calibration Function The EM-2115 employs an internal impulse generator to calibrate the receiver. The cali- bration function is activated when the front panel CAL Switch is pushed or by a remote com- mand signal via the rear panel IEEE-488 (GPIB) Interface Bus Connector.
  • Page 133 EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS b. FM The FM Audio signal is the amplified discriminator output. Nominal output is 100 mW into 600. NOTE: In Slideback, the output of the Threshold Detector is heard in the earphones. c. BFO The BFO circuit is turned on for aural identification of CW signals.
  • Page 134 EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS Color: Red. Function: Indicates the Remote mode of operation is selected. A-12.0 Power Switch Type: Two cycle pushbutton switch Function: Self-explanatory. (EM2115A-10)
  • Page 135 APPENDIX B EM-2115 DESCRIPTION FRONT/REAR PANEL CONNECTORS B-1.0 Front Panel Connectors The following is a description of the front panel connectors for the EM-2115. B-1.1 Input Connector A1J1 Type: TNC. Function: Self-explanatory. Nominal 50 input impedance. B-1.2 Audio Output A1J2 Type: Standard.
  • Page 136 EM-2505 or EM-SUS-30 control cables to the receiver. NOTE: The obsolete versions of the loop (ALR-25) and rod (RVR- 25) antennas will not function with the EM-2115 receiver. B-2.9 Power Connector (A14J2) Type: Combined voltage selecting and fuse holder. Function: Self explanatory.
  • Page 137 EM-2115 APPENDIX B DESCRIPTION FRONT /REAR PANEL CONNECTORS B-2.10 Battery Input Connector A14J3 Type: 9-pin connector (MS-3192A-20-16S) Function: To connect an optional external EM-2126 Battery Pack/ Charger Mod- ule to the EM-2115. (EM2115B-3)
  • Page 138 EM-2115 APPENDIX B DESCRIPTION FRONT /REAR PANEL CONNECTORS Rear Panel EM-2115 A13J1 REAR PANEL ANTENNA CONNECTOR A13J1 PIN DESIGNATION FUNCTION GROUND + RAW BD 1000 + DETENT +12 VDC FILTERED BD 0100 + DETENT BD 0010 BD 0001 SUS-1 SUS-2...
  • Page 139 EM-2115 APPENDIX B DESCRIPTION FRONT /REAR PANEL CONNECTORS Figure B.2 Rear Panel Antenna Connector A13J1 A13J3 PLOTTER CONNECTOR A13J3 PIN FUNCTION DESIGNATION SPARE X OUT (+) (0-1.5 V) SHIELD GND PEN LIFT COIL (N/O +) X COMM. GND Y COMM. GND...
  • Page 140 APPENDIX C EM-2115 FUNCTION AND DESCRIPTION C-1.0 Introduction This section contains a brief description of unit and circuitry function for the EM-2115 Interference Analyzer. C-2.0 Synopsis Of Receiver Operation The EM-2115 Interference Analyzer is a medium range EMI/RFI receiver operating from 9 kHz to 1 GHz.
  • Page 141 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION C-3.0 Circuit Description Sections 4.0 through 12.0 briefly describe the major modular and pc board circuitry of the EM-2115. C-4.0 A2 RF Tuner Module The A2 RF Tuner selects RF signals between 9 kHz and 1 GHz and converts them to one of three IF frequencies (175 kHz, 1.6 MHz, 8.7 MHz) depending on the frequency of the input...
  • Page 142 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION The IG Calibrator is controlled by logic comands from the Microprocessor Assembly (A1A3). C-4.3 A2A16A1 Stator Board Assembly (Refer to Figure H.2) The Stator Board Assembly and 15 RF Frequency Range Bands comprise the active tun- ing circuitry of the receiver.
  • Page 143 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION For RF Frequency Range Bands 1-9 (9 kHz-12.5 MHz), the only components on the fre- quency range bands are the RF/LO transformers, coils, trimmer/padder capacitors, coupling ca- pacitors, and loading resistors. All other active tuning circuitry is located on the Stator Board As- sembly.
  • Page 144 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION The output of the input switching circuits is applied to a variable gain wideband amplifier circuit. A control voltage supplied by the Microprocessor Board (A1A3) sets the overall gain of the amplifier. The output of the amplifier circuit is applied to an IF attenuator with a total range of 30 dB.
  • Page 145 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION The IF output from the RF Tuner Module (A2) is applied to the IF Input Connector (A3J1) of the IF Amplifier Module. A logic command from the Microprocessor Board (A1A3) activates the selected IF by turning on the -6 VDC supply for the circuit. Only the selected IF is turned on, the remaining two IF circuits are turned off to prevent loading the active circuit.
  • Page 146 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION As with the IF Amplifier Module (A3), only the IF selected is turned on, the remaining two IF circuits are turned off to prevent loading the active circuit. A logic command from the Microprocessor Board (A1A3) activates the selected IF by turning on the -6 VDC supply for the circuit.
  • Page 147 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION The selected IF output from the 0.1 Narrowband Module is applied through a successive series of log detector stages to produce a DC-coupled reproduction of the logged envelope of the IF input signal (AM Video signal). In addition, a limited IF signal is also produced.
  • Page 148 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION The video signal is then weighted to obtain the time constants (charge/discharge times) required for each detector function. Additional circuitry, for obtaining the peak level of the quasi- peak detected signal, is located on the Audio Amplifier Board (A9).

  • Page 149: A11 Sweep Board

    EM-2115 APPENDIX C FUNCTION AND DESCRIPTION A BFO (Beat Frequency Oscillator) circuit is part of each discriminator circuit. is, When a logic command from the Microprocessor Board (A1A3) activates this circuit, a crystal oscilla- tor circuit is turned on. This produces a low frequency signal that is mixed with the limited IF signal before it is applied to the discriminator.

  • Page 150: A9 Audio Amplifier Board

    EM-2115 APPENDIX C FUNCTION AND DESCRIPTION 2) End of sweep--pen lift. b. Continuous Mode: 1) Sweep start--trace activated. 2) End of sweep--blanking activated. 3) End of blanking--sweep start initiated. The Blanking circuit blanks out the external oscilloscope CRT during retrace of the spec- trum display from right to left.

  • Page 151: A1A2 Front Panel Board

    C-15 A1A3 Microprocessor Assembly (Refer to Figure H.24) The internal Microprocessor Assembly contains the control circuitry for the EM-2115. Information is received from the front panel switches-controls or via the rear panel GPIB Con- nector, then processed. The resultant logic commands are sent to the appropirate internal circuits that respond in accordance with the commands received.

  • Page 152: A16 Interface Board

    EM-2115 APPENDIX C FUNCTION AND DESCRIPTION The clock circuit, comprising Crystal Y1 and two capacitors to ground, supplies the 4.0 MHz clock required to drive the microprocessor chip. Interfacing the microprocessor circuit with the functions to be controlled within the unit is performed by the PIA (Peripheral Interface Adapter) chips (U20-U26).
  • Page 153 EM-2115 APPENDIX C FUNCTION AND DESCRIPTION (Refer to Figures H.27 and H.28) The Power Supply module supplies the regulated voltages used by the receiver and is lo- cated at the rear of the unit. The circuitry within the module can be divided into three subcir-...
  • Page 154 EM-2115 APPENDIX D BROADBAND CORRECTION FACTORS APPENDIX D BROADBAND CORRECTION FACTORS ELECTRO-METRICS MODEL EM-2115 (EMC-30) SERIAL NO: TYPICAL 10 kHz 1 100 kHz 1 1 MHz 1 RF BAND NO: FREQUENCY RANGE BANDWIDTH BANDWIDTH BANDWIDTH 9-35 kHz xxxx xxxx 35-75 kHz...

  • Page 155: Standard Accessory Items

    EM-2115 APPENDIX E ACCESSORY DATA APPENDIX E EM-2115 ACCESSORY DATA E-0.1 Standard Accessory Items The following accessories are provided as standard equipment with each EM-2115 Inter- ference Analyzer. a. EM-PCD-136 AC power cord. Length: 830 m (72"). Number: 1. b. EM-1312 Coaxial Cable, 50.

  • Page 156: Em-6912A Biconical Antenna

    Electro-Metrics Model EM-2115 Interference Analyzer to perform magnetic field measurements from 9 kHz to 30 MHz. This frequency range covers the first ten RF Frequency Ranges of the EM-2115 and is automatically switched for optimum operation at the RF Frequency Range se- lected.

  • Page 157: Em-6940 Log Conical Antenna

    EM-2115 APPENDIX E ACCESSORY DATA Connector: Type BNC, female. b. Mechanical Length: 129.8 cm (51.0") tip-to-tip. Diameter: 51.0 cm (20.0") maximum. Depth: 54.6 cm (21.5") including balun. Weight: 2.7 kg (6 lbs). E-2.2.2 EM-6912A Description The EM-6912A performs EMI measurements to MIL-STD, government, commercial and other specifications from 20 to 300 MHz.
  • Page 158 EM-2115 APPENDIX E ACCESSORY DATA Average VSWR: <2.5. Axial Ratio: <1 dB. Average Beamwidth: 80°. Polarization: Circular. Power Capability: 100 Watts. Connector: Type TNC, female. (Type N optional). b. Mechanical Length: 81.3 cm (32.0"). Diameter: 33.0 cm (13") maximum. Weight: 7.7 kg (17 lbs).

  • Page 159: Em-6950 Log Periodic Antenna

    EM-2115 APPENDIX E ACCESSORY DATA E-2.4 EM-6950 Log Periodic Antenna E-2.4.1 EM-6950 Specifications a. Electrical Frequency Range (calibrated): 200-1000 MHz. Calibration Factor Chart furnished with each antenna. Input Impedance: Calibrated in a 50 system. Average VSWR: <2:1. Connector: Type N, female.

  • Page 160: Em-6960 Double Ridged Guide Antenna

    EM-2115 APPENDIX E ACCESSORY DATA E-2.4.3 EM-6950 Applications The EM-6950 was designed specifically for EMI measurements and specification compli- ance testing in accordance with MIL-STD-462 plus other military, DOD, and government speci- fications. The linearly polarized design permits separate measurement of horizontal and vertical electric field components from 200-1000 MHz.

  • Page 161: Em-6892 Remote Active Antenna

    EM-2115 APPENDIX E ACCESSORY DATA 217563, the EM-6960 is designed specifically for EMI measurements and specification compli- ance testing. The antenna is precision machined from aluminum. The 50 Type N connector is mounted on the base block of the antenna. A bracket is provided that enables the antenna to be mounted to a standard tripod.
  • Page 162 EM-2115 APPENDIX E ACCESSORY DATA Power Source: 18 V rechargeable battery (sealed lead acid). Operating Time: Nominal 20 hours between rechargings. Recharge Time: Nominal 12 hours. Battery charger operates from 120/ 220 VAC, 50/60 Hz. Connector: Type TNC, female. b. Mechanical...

  • Page 163: Em-6893 Remote Vertical Antenna

    Electro-Metrics Model EM-2115 Interference Analyzer and is used to obtain electric field meas- urements from 9 kHz to 30 MHz. This frequency range covers the first ten RF Frequency Ranges for the EM-2115 and is automatically switched for optimum operation at the particular EM-2115 RF Frequency Range selected.

  • Page 164: Em-6924 Tunable Dipole Antenna Set

    The EM-6893 is suited for compliance testing to MIL-STD-461C, CISPR recommenda- tions, plus other government and federal standards. The antenna is designed to operate with the EM-2115 Interference Analyzer and its calibration chart is based on this usage. E-2.8 EM-6924 Tunable Dipole Antenna Set E-2.8.1 EM-6924 Specifications...

  • Page 165: Probes

    EM-2115 APPENDIX E ACCESSORY DATA Rod Diameter: 13 mm (0.5") Weight: 341 g (12 oz) EM6927: Length: 46.7 cm (18.4") Rod Diameter: 13 mm (0.5") Weight: 227 g (8 oz) Dipole Element Data: 17-152 cm (6.75-60") adjustable elements (2 each), 9.5-47 cm (3.75-18.5") adjustable elements (2 each),...

  • Page 166: Em-6981 Current Probe

    The EM-6981 Current Probe enables a conventional voltmeter, oscilloscope, calibrated receiver (e.g., EM-2115), or other electronic instrumentation to rapidly measure current accurate- ly from 9 kHz to 110 MHz. The response of the probe is proportional both to signal frequency and conducted signal current.

  • Page 167: Em-6880/Em-6881/Em-6882 Magnetic Field Probes

    The EM-6880, EM-6881, and EM-6882 Magnetic Field Probes are small shielded loops, each covering a specific frequency range. They are designed for use with any 50 impedance receiver such as the Electro-Metrics Model EM-2115 Interference Analyzer. The probes are electrostatically shielded and therefore sensitive only to the magnetic component of the electro-magnetic field.

  • Page 168: Em-6983 Line Probe

    To find the field strength H in dB(µA/m), add the factor from the probe chart in dB(S/m) to the measured two-terminal input voltage on the EM-2115 in dB(µV). To find the flux density B in dB(pT), add 2 dB to the field strength H reading.

  • Page 169: Electrostatic Field Probe

    EM-2115 APPENDIX E ACCESSORY DATA Weight: 94 g (3.3 Oz). Materials: Body: Delrin, Linen Phenolic. Probe Contact: Brass. E-3.3.2 EM-6983 Description The EM-6983 Line Probe is a wire clamp-on device that attaches directly to equipment power lines, in place of a LISN (line stabilization network), for measuring conducted emissions.

  • Page 170: Em-6992 Near Field Probe Set

    EM-2115 APPENDIX E ACCESSORY DATA E-3.4.2 EM-6890 Description The Electro-Metrics Model EM-6890 Electrostatic Field Probe is a hand-held uncalibrat- ed probe used to investigate the sources of localized electric field radiation from 9 kHz to 1 GHz. E-3.4.3 Applications The EM-6890 is used in searching for Radio Frequency (RF) leakage. The probe is very useful in determining the side of an article under test that is radiating the highest RF level prior to running a MIL-STD or FCC radiated emissions test.

  • Page 171: Filters

    E-4.1 High/Low Pass Filters The Electro-Metrics Model EM-7450-1, EM-7450-2 High Pass and Model EM-LPF- 30M, EM-LPF-1000M Low Pass Filters enhance the performance of the EM-2115 Interference Analyzer by suppressing all frequencies above/below the specified frequency of the filter. This prevents spurious responses that are frequently encountered in radio noise meters when testing to MIL-STD-461 and other power line conducted emanations.

  • Page 172: Line Impedance Stabilization Networks

    EM-7832: 5 µH/50 LISN for Military and FCC Testing, 100 kHz to 65 MHz, two line, single phase rated at 25 A. Other LISNS' are available on request. Contact Electro-Metrics for availability, usage, rating, and phasing. E-5.2 LISNS' Applications The Electro-Metrics series of Line Impedance Stablization Networks (LISN) are designed to meet FCC, VDE, and CISPR standards for conducted emissions measurements.
  • Page 173 Approx. 2.7 kg (6 lbs). E-6.2 EM-4320 Description The Electro-Metrics Model EM-4320 Calibrated Impulse Generator provides a reliable source of calibrated impulses at variable repetition rates. The EM-4320 provides a repetition rate variable between 1 Hz and 100 Hz (1 Hz steps between 1 and 10 Hz, 10 Hz steps between 10 and 100 Hz) from 10 kHz to 1000 MHz.
  • Page 174 The battery pack is a 36 V (nominal) 8 ampere-hour battery made up of 18 sealed lead- acid cells. A fully charged battery will operate the EM-2115 for a nominal time period of five hours. It can be fully recharge in approximately 16 hours. A fully charged battery can be stored up to three years with no appreciable decrease in battery capacity.

  • Page 175: Em-4206 Broadband Preamplifier

    EM-2115 APPENDIX E ACCESSORY DATA The charger circuit incorporates monitor and protection circuitry to prevent overcharging or excessive discharging of the battery cells. E-8.0 EM-4206 Broadband Preamplifier E-8.1 EM-4206 Specifications a. Electrical Frequency Range: 10 kHz-1 GHz. Gain: 26 dB, typical.

  • Page 176: Em-4205 Broadband Power Amplifier

    1 Vrms. If the 1 Vrms input level limit is exceeded, the internal circuitry of the unit may be damaged. E-8.3 EM-4206 Applications The Electro-Metrics Model EM-4206 Broadband Preamplifier is a self-contained module used to improve the sensitivity of EMI analyzers, spectrum analyzers, oscilloscopes, and many other devices without distorting the amplitude accuracy.

  • Page 177: Additional Optional Accessory Items

    EM-1105: Coaxial Cable, 50. Connectors: BNC (male)-TNC (male). Length: 7.6 m (25'). b. EM-1300: Rack mounting kit for mounting the EM-2115 in a standard 19- inch instrument rack. c. EM-1301: Antenna Mount. d. EM-1303: Antenna Clamp Mount.
  • Page 178 EM-2115 APPENDIX E ACCESSORY DATA f. EM-1310: Shielded Room Bulkhead Filter for EM-2115 Antenna Control Ca- ble, with cable. g. EM-2505: Antenna/Transducer Switching Unit. h. EM-6136: Tripod, Rugged. i. EM-6136-1: Tripod, Rugged with Bag. j. EM-6889: Counterpoise, 61 cm x 61 cm (2' x 2'), for use with EM-6893, EM- 6892.

  • Page 179: Recommended Test Equipment

    EM-2115 APPENDIX F RECOMMENDED TEST EQUIPMENT APPENDIX F EM-2115 RECOMMENDED TEST EQUIPMENT The recommended test equipment required to perform the performance test procedures in Section III plus the service, maintenance, and calibration procedures in Section IV is listed in the following table.
  • Page 180 EM-2115 APPENDIX F RECOMMENDED TEST EQUIPMENT NOTE: 1. These models are listed as examples which are known to posses the required performance characteristics. There is no intent to favor or show preference to the manufacturers listed here over any other manufacturer who produces test equipment with equivalent perfor- mance characteristics;...

  • Page 181: Introduction

    APPENDIX G EM-2115 REPLACEABLE COMPONENTS G-1.0 Introduction Appendix G lists the replaceable assemblies and components for the EM-2115 Interfer- ence Analyzer. G-2.0 Replaceable Assemblies The assemblies, PC boards, and modules that can be replaced on a one for one basis with- in the EM-2115 are listed in Table G.1.

  • Page 182: Replaceable Assemblies

    Manufacturer's part number, Column 4: Name of manufacturer. G-3.1 Resistor Part Number Codes In the following EM-2115 Replacement Parts List, the Part Number for each resistor is listed using the following codes. Resistor Part Number: RC07GF103K RC = TYPE: Resistor, fixed, composition, insulated.
  • Page 183 The following digits then represent significant figures. RESISTANCE TOLERANCE: B = ±0.1%, C = ±0.25%, D = ±0.50%, F = ±1.00%. EM-2115 REPLACEMENT PARTS LIST A1A2 FRONT PANEL PC BOARD (9180) METERS Meter Assembly...
  • Page 184 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A2 FRONT PANEL PC BOARD (9180), CONTD INTEGRATED CIRCUITS Integrated Circuit ICM7218D Intersil Display-Segment 5082-7414 Display-Segment 5082-7414 Display-Segment 5082-7414 Display-7 Segment 5082-7613 Display-7 Segment 5082-7613 Display-7 Segment 5082-7616 Display-7 Segment 5082-7613...
  • Page 185 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A2 FRONT PANEL PC BOARD (9180), CONTD DIODES S1CR1 521-9216 Dialight S3CR1 521-9216 Dialight S6CR1 521-9216 Dialight S9CR1 521-9216 Dialight CAPACITORS Cap. 33 µF 8141050WSR3345 Murata Erie Cap. 2.2 µF 35 V...
  • Page 186 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A2 FRONT PANEL PC BOARD (9180), CONTD RESISTORS Factory Adjust Allen Bradley Factory Adjust Allen Bradley Factory Adjust Allen Bradley Factory Adjust Allen Bradley Factory Adjust Allen Bradley Factory Adjust Allen Bradley...
  • Page 187 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A3 MICROPROCESSOR PC Board (8609-1) CONNECTORS 40 Pin Connector 110-40001-601 AUGAT 26 Pin Connector 110-26001-601 AUGAT 40 Pin Connector 110-40001-601 AUGAT 26 Pin Connector 110-26001-601 AUGAT 36 Pin Connector (cut to 12...
  • Page 188 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A3 MICROPROCESSOR PC Board (8609-1) CONTD INTEGRATED CIRCUITS Integrated Circuit CD4052BE National Integrated Circuit CD4052BE National Integrated Circuit CD4049BE National Integrated Circuit µA741 HC National Integrated Circuit 4023BPC National Integrated Circuit...
  • Page 189 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A3 MICROPROCESSOR PC Board (8609-1) CONTD CAPACITORS Cap. 0.1 µF 8131100W5R0104M Murata Erie Cap. 0.1 µF 8131100W5R0104M Murata Erie Cap. 0.1 µF 8131100W5R0104M Murata Erie Cap. 0.1 µF 8131100W5R0104M Murata Erie Cap.
  • Page 190 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A3 MICROPROCESSOR PC Board (8609-1) CONTD CAPACITORS Cap. 2.2 µF TD-1035-225-25 Mepco Electra Cap. 4700 pF CK05BX472K Mallory Cap. 68 µF 196D686X9015PE4 Sprague Cap. 68 µF 196D686X9015PE4 Sprague Cap. 0.1 µF...
  • Page 191 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A1A3 MICROPROCESSOR PC Board (8609-1) CONTD RESISTORS Res. 470 ohm RC07GF471K Allen Bradley Res. 470 ohm RC07GF471K Allen Bradley Res. 47 kilohm RC07GF473K Allen Bradley A2 RF TUNER ASSEMBLY (4848) TRANSISTORS...
  • Page 192 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A2 RF TUNER ASSEMBLY (4848) CONTD CAPACITORS Cap. 15 µF 20 V CS13AE15GK Sprague Feed Thru 0.001 µF FA5C-102W Allen Bradley Feed Thru 0.001 µF FA5C-102W Allen Bradley Stand Off 1000 pF...
  • Page 193 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A2 RF TUNER ASSEMBLY (4848) CONTD RESISTORS Res. 470 ohm RC07GF471K Allen Bradley Res. 6.8 kilohm RC07GF682K Allen Bradley Res. 15 ohm RC07GF150K Allen Bradley Res. 1.5K kilohm RC07GF391K Allen Bradley Res.
  • Page 194 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A2A2 RF FREQUENCY BAND 2 (3148) COIL ASSEMBLIES T0201 Coil Assy A4861-2 T0202 Coil Assy A4862-1 L0203 Coil Assy A4863-2 T0204 Coil Assy A4828-2 CAPACITORS Cap. Var. 5-25 pF 557-000-C0P039 Murata Erie Cap.
  • Page 195 EM-21105 APPENDIX G REPLACEABLE COMPONENTS Cap. 270 pF CM05F271G03 Mallory EM-2115 REPLACEMENT PARTS LIST A2A2 RF FREQUENCY BAND 3 (4824) Cap. 470 pF CM05F471G03 Mallory Cap. 82 pF CM05F820G03 Mallory Cap. Var. 7-25 pF 538-002-93R Murata Erie RESISTORS Res. Var.
  • Page 196 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A2A5 RF FREQUENCY BAND 5 (3153) COIL ASSEMBLIES T0501 Coil Assy A4864-1 L0502 Coil Assy A4865-1 L0503 Coil Assy A4833-1 T0504 Coil Assy A4834-5 CAPACITORS Cap. Var. 5-25 pF 557-059-C0P039R Murata Erie Cap.
  • Page 197 Murata Erie Cap. Var. 5-25 pF 557-059-C0P039R Murata Erie Cap. 0.01 µF 100 V CK05BX103K Murata Erie EM-2115 REPLACEMENT PARTS LIST A2A6 RF FREQUENCY BAND 6 (3156) CAPACITORS Cap. Var. 5-25 pF 557-059-C0P039R Murata Erie Cap. Var. 5-25 pF 557-059-C0P039R Murata Erie Cap.
  • Page 198 EM-21105 APPENDIX G REPLACEABLE COMPONENTS Res. Var. 3339P-1-503 Bourns EM-2115 REPLACEMENT PARTS LIST A2A8 RF FREQUENCY BAND 8 (3158) COIL ASSEMBLIES Res. Var. 3339P-1-503 Bourns T0801 Coil Assy A4864-4 L0802 Coil Assy A4833-4 L0803 Coil Assy A4833-4 T0804 Coil Assy...
  • Page 199 EM-21105 APPENDIX G REPLACEABLE COMPONENTS CAPACITORS Cap. Var. 1.5-7 pF 557-059-COPO10R Murata Erie Cap. Var. 1.5-7 pF 557-059-COPO10R Murata Erie EM-2115 REPLACEMENT PARTS LIST A2A9 RF FREQUENCY BAND 9 (3159) CAPACITORS Cap. 3300 pF CM06F332G03 Mallory Cap. 39 pF CMO5F390G03 Mallory Cap.
  • Page 200 EM-21105 APPENDIX G REPLACEABLE COMPONENTS VARACTORS/DIODES Varactor, 47 pF MC105B Crystalonics Varactor, 47 pF MC105B Crystalonics EM-2115 REPLACEMENT PARTS LIST A2A10 RF FREQUENCY BAND 10 (3160-1) VARACTORS/DIODES Varactor, 47 pF MC105B Crystalonics Varactor, 47 pF MC105B Crystalonics Varactor, 47 pF...
  • Page 201 Murata Erie Cap. 270 pF CM05FD271G03 Arco Cap. 0.01 µF 100 V CK05BX103K Murata Erie EM-2115 REPLACEMENT PARTS LIST A2A10 RF FREQUENCY BAND 10 (3160-1) CAPACITORS Cap. 0.01 µF 100 V CK05BX103K Murata Erie Cap. 0.01 µF 100 V CK05BX103K Murata Erie Cap.
  • Page 202 Res. 100 kilohm RC07GF104K Allen Bradley Res. 3.9 kilohm RC07GF392K Allen Bradley Res. 100 kilohm RC07GF104K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A2A10 RF FREQUENCY BAND 10 (3160-1) RESISTORS Res. Var. 3262X-103 Bourns Res. 1.0 kilohm RC07GF102K Allen Bradley Res. 3.3 kilohm...
  • Page 203 Varactor, 235 pF VS821 Crystalonics CR2A Varactor, 235 pF VS821 Crystalonics CR2B Varactor, 235 pF VS821 Crystalonics EM-2115 REPLACEMENT PARTS LIST A2A16A1 RF TUNER/STATOR PC BOARD ASSEMBLY (4803-1) VARACTORS CR5A Varactor, 235 pF VS821 Crystalonics CR5B Varactor, 235 pF VS821 Crystalonics...
  • Page 204 Diode 1N3064 National CR29 Diode 1N3064 National CR30 Diode 1N3064 National EM-2115 REPLACEMENT PARTS LIST A2A16A1 RF TUNER/STATOR PC BOARD ASSEMBLY (4803-1) CHOKES/COIL ASSEMBLIES T2001 Coil Assy 175 kHz A4816 3001 Coil Assy 1.6 MHz A4817 Choke 330 mH Mh43300M...
  • Page 205 Cap. 0.01 µF 100 V CK05BX103K Murata Erie Cap. 2.2 µF 15 V TSD1-15-225 Semcor EM-2115 REPLACEMENT PARTS LIST A2A16A1 RF TUNER/STATOR PC BOARD ASSEMBLY (4803-1) CAPACITORS Cap. 0.01 µF 100 V CK05BX103K Murata Erie Cap. 2.2 µF 15 V...
  • Page 206 CK05BX103K Murata Erie Cap. 0.01 µF 100 V CK05BX103K Murata Erie Cap. 2.2 µF 15 V TSD1-15-225 Semcor EM-2115 REPLACEMENT PARTS LIST A2A16A1 RF TUNER/STATOR PC BOARD ASSEMBLY (4803-1) RESISTORS Res. 220 kilohm RC07GF224K Allen Bradley Res. 220 kilohm RC07GF224K Allen Bradley Res.
  • Page 207 RC07GF222K Allen Bradley Res. 2.2 kilohm RC07GF222K Allen Bradley Res. 1.0 Megohm RC07GF105K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A2A16A1 RF TUNER/STATOR PC BOARD ASSEMBLY (4803-1) RESISTORS Cap. 2.2 µF 15 V TSD1-15-225 Semcor Res. 330 kilohm RC07GF334K Allen Bradley Res.
  • Page 208 RC07GF104K Allen Bradley Res. 10 ohm RC07GF100K Allen Bradley Res. 470 ohm RC07GF471K Allen Bradley Res. 18 kilohm RC07GF183K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A2A16A2 PREAMPLIFIER/TUNING REGULATOR PC BOARD (8612) JACKS Jack 50-051-0000 Sealectro Jack 50-051-0000 Sealectro Jack 50-051-0000...
  • Page 209 Central Semiconductor Transistor 2N3440 Central Semiconductor Transistor 2N3440 Central Semiconductor Transistor 2N2904 Central Semiconductor Transistor 2N4416 Central Semiconductor EM-2115 REPLACEMENT PARTS LIST A2A16A2 PREAMPLIFIER/TUNING REGULATOR PC BOARD (8612) TRANSISTORS Transistor 2N2920 Central Semiconductor Transistor 2N3690 Central Semiconductor DIODES Diode 1N3064 National...
  • Page 210 T5001 Coil Assy 1.775 kHz B4880 T4002 Coil Assy 8.7 MHz B4881 T3002 Coil Assy 1.6 MHz B4882 EM-2115 REPLACEMENT PARTS LIST A2A16A2 PREAMPLIFIER/TUNING REGULATOR PC BOARD (8612) CAPACITORS Cap. 33 pF CM05F330G03 Arco Cap. 680 pF CM05F681G03 Arco Cap. 2.2 µF...
  • Page 211 Cap. 0.01 µF 100 V CK05BX103K Murata Erie Cap. 2.2 µF TD1035-225-25 Arco Cap. 2.2 µF TD1035-225-25 Arco EM-2115 REPLACEMENT PARTS LIST A2A16A2 PREAMPLIFIER/TUNING REGULATOR PC BOARD (8612) CAPACITORS Cap. 2.2 µF TD1035-225-25 Arco Cap. 2.2 µF TD1035-225-25 Arco Cap. 2.2 µF...
  • Page 212 Res. 4.7 kilohm RC07GF472K Allen Bradley Res. 1.0 kilohm RC07GF102K Allen Bradley Res. 8.2 kilohm RC07GF822K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A2A16A2 PREAMPLIFIER/TUNING REGULATOR PC BOARD (8612) RESISTORS Res. 3.9 kilohm RC07GF392K Allen Bradley Res. 8.2 kilohm RC07GF822K Allen Bradley Res.
  • Page 213 Res. 97.6 ohm RN55D97R6F Mepco Electra Res. 97.6 ohm RN55D97R6F Mepco Electra Res. 71.5 ohm RN55D71R5F Mepco Electra EM-2115 REPLACEMENT PARTS LIST A2A16A2 PREAMPLIFIER/TUNING REGULATOR PC BOARD (8612) RESISTORS Res. 1.8 kilohm RC07GF182K Allen Bradley Res. 1.0 kilohm RC07GF102K Allen Bradley Res.
  • Page 214 Res. 3.83 kilohm RN60D3831F Mepco Electro Res. 8.87 kilohm RN60D8871F Mepco Electro Res. 10 kilohm RC07GF103K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A2A16A2 PREAMPLIFIER/TUNING REGULATOR PC BOARD (8612) RESISTORS Res. 680 ohm RC07GF681K Allen Bradley Res. 680 ohm RC07GF681K Allen Bradley Res.
  • Page 215 GPD-461 Avantec CAPACITORS Cap. Feed Thru FA5C-102W Allen Bradley Cap. 2.2 µF 35 V TD-1035-225-25 Arco EM-2115 REPLACEMENT PARTS LIST A2A16A4 LO AMPLIFIER ASSEMBLY (8684) CAPACITORS Cap. 2.2 µF 35 V TD-1035-225-25 Arco Cap. Feed Thru FA5C-102W Allen Bradley Cap. 0.001 µF CHIP...
  • Page 216 6 dB T-Pad Assy 62T 250 Pyrofilm A2A16A5A1 I.G. DRIVE CIRCUIT PC BOARD (3050-1) TRANSISTORS Transitor 2N4250 National Transitor 2N4250 National EM-2115 REPLACEMENT PARTS LIST A2A16A4 LO AMPLIFIER ASSEMBLY (8684) TRANSISTORS Transitor 2N5307 National Transitor 2N5308 National DIODES Diode 1N3064...
  • Page 217 Res. 220 ohm RC07GF221K Allen Bradley Res. 6.8 kilohm RC07GF682K Allen Bradley A2A16A6 RF ATTENUATOR ASSEMBLY (8671) Programmable Atten. 50P-299 JFW Industries EM-2115 REPLACEMENT PARTS LIST A3A1 IF AMPLIFIER 175 kHz PC BOARD (9176-1) TRANSISTORS Transitor 2N3690 Motorola Transitor 2N3690 Motorola Transitor...
  • Page 218 J.W. Miller Coil Assy A9189-1 Coil Assy A9189-2 Coil Assy A9189-3 Coil Assy A9189-3 EM-2115 REPLACEMENT PARTS LIST A3A1 IF AMPLIFIER 175 kHz PC BOARD (9176-1) CAPACITORS Cap. 3300 pF CM06F332G03 Mallory Cap. 750 pF CM05F751G03 Mallory Cap. 68 µF...
  • Page 219 Cap. 2.2 µF TD1035-225-25 Arco Cap. 2.2 µF TD1035-225-25 Arco Cap. 2.2 µF TD1035-225-25 Arco EM-2115 REPLACEMENT PARTS LIST A3A1 IF AMPLIFIER 175 kHz PC BOARD (9176-1) CAPACITORS Cap. 2.2 µF TD1035-225-25 Arco Cap. 2.2 µF TD1035-225-25 Arco Cap. 2.2 µF...
  • Page 220 RC05GF101K Allen Bradley Res. 100 ohm RC05GF101K Allen Bradley Res. 100 ohm RC05GF101K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A3A1 IF AMPLIFIER 175 kHz PC BOARD (9176-1) RESISTORS Res. 100 ohm RC05GF101K Allen Bradley Res. 82 ohm RC05GF820K Allen Bradley A3A2 IF AMPLIFIER 1.6 MHz PC BOARD (9176-2)
  • Page 221 9250-105 J.W. Miller Choke 1 mH 9250-105 J.W. Miller Choke 1 mH 9250-105 J.W. Miller EM-2115 REPLACEMENT PARTS LIST A3A2 IF AMPLIFIER 1.6 MHz PC BOARD (9176-2) CHOKES/COIL ASSEMBLIES Choke 1 mH 9250-105 J.W. Miller Choke 1 mH 9250-105 J.W. Miller...
  • Page 222 TD1035-225-25 Mepco Electra Cap. 2.2 µF TD1035-225-25 Mepco Electra Cap. 2.2 µF TD1035-225-25 Mepco Electra EM-2115 REPLACEMENT PARTS LIST A3A2 IF AMPLIFIER 1.6 MHz PC BOARD (9176-2) CAPACITORS Cap. 2.2 µF TD1035-225-25 Mepco Electra Cap. 2.2 µF TD1035-225-25 Mepco Electra Cap.
  • Page 223 RC05GF101K Allen Bradley Res. 560 ohm RC05GF561K Allen Bradley Res. 470 ohm RC05GF471K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A3A2 IF AMPLIFIER 1.6 MHz PC BOARD (9176-2) RESISTORS Res. 1.0 kilohm RC05GF102K Allen Bradley Res. 68 ohm RC05GF680K Allen Bradley Res.
  • Page 224 Diode FD-600 Motorola Diode FD-600 Motorola Diode FD-600 Motorola Diode FD-600 Motorola EM-2115 REPLACEMENT PARTS LIST A3A3 IF AMPLIFIER 8.7 MHz PC BOARD (9176-3) CHOKES/COIL ASSEMBLIES Choke 2.2 µH 2.2µH-WEE-WEE Nytronics Coil Assy A9190-6 Coil Assy A9190-5 Coil Assy A9189-13...
  • Page 225 Cap. 0.01 µF CK05BX-103-K Murata Erie Cap. 22 pF CM05F220G03 Mallory Cap. 0.01 µF CK05BX-103-K Murata Erie EM-2115 REPLACEMENT PARTS LIST A3A3 IF AMPLIFIER 8.7 MHz PC BOARD (9176-3) CAPACITORS Cap. 5 pF DM5-050-D Arco Cap. 22 pF CM05F220G03 Mallory Cap.
  • Page 226 RC05GF821K Allen Bradley Res. 820 ohm RC05GF821K Allen Bradley Res. Var. 500 ohm TYPE-100-1-501 Allen Bradley EM-2115 REPLACEMENT PARTS LIST A3A3 IF AMPLIFIER 8.7 MHz PC BOARD (9176-3) RESISTORS Res. Var. 500 ohm TYPE-100-1-501 Allen Bradley Res. 3.3 kilohm RC05GF332K Allen Bradley Res.
  • Page 227 A4A1 LOG DETECTOR 175 kHz PC BOARD (3493-1) TRANSISTORS Transistor 2N3563 Motorola Transistor 2N3563 Motorola Transistor 2N3563 Motorola EM-2115 REPLACEMENT PARTS LIST A4A1 LOG DETECTOR 175 kHz PC BOARD (3493-1) TRANSISTORS Transistor 2N3563 Motorola Transistor 2N3563 Motorola Transistor 2N3563 Motorola...
  • Page 228 Arco Cap. 2.2 µF 15 V TDS-115-225 Arco Cap. 0.15 µF 40 V C280AA/P-150K Amperex EM-2115 REPLACEMENT PARTS LIST A4A1 LOG DETECTOR 175 kHz PC BOARD (3493-1) CAPACITORS Cap. 2.2 µF 15 V TDS-115-225 Arco Cap. 0.15 µF 40 V...
  • Page 229 C280AA/P-150K Amperex Cap. 2.2 µF 15 V TDS-115-225 Arco Cap. 2.2 µF 15 V TDS-115-225 Arco EM-2115 REPLACEMENT PARTS LIST A4A1 LOG DETECTOR 175 kHz PC BOARD (3493-1) RESISTORS Res. 1 kilohm RC07GF101K Allen Bradley Res. 200-300 ohm RN55D****F Mepco Electra Res.
  • Page 230 RN60D7500F Mepco Electra Res. 100 ohm RC07GF100K Allen Bradley Res. 200-300 ohm RN55D****F Mepco Electra EM-2115 REPLACEMENT PARTS LIST A4A1 LOG DETECTOR 175 kHz PC BOARD (3493-1) RESISTORS Res. 1 kilohm RC07GF101K Allen Bradley Res. 40.2 ohm RN60D4020F Mepco Electra Res.
  • Page 231 Transistor 2N3563 Motorola Transistor 2N3563 Motorola Transistor 2N4250 Motorola Transistor 2N3693 Motorola EM-2115 REPLACEMENT PARTS LIST A4A2 LOG DETECTOR 1.6 MHz PC BOARD (3493-2) CHOKES Choke 100 µH 21000M Stanwyck Choke 100 µH 21000M Stanwyck Choke 100 µH 21000M Stanwyck Choke 100 µH...
  • Page 232 Cap. 2.2 µF 15 V TDS-115-225 Arco Cap. 0.01 µF 100 V 8121100651103M Murata Erie EM-2115 REPLACEMENT PARTS LIST A4A2 LOG DETECTOR 1.6 MHz PC BOARD (3493-2) CAPACITORS Cap. 0.01 µF 100 V 8121100651103M Murata Erie Cap. 0.01 µF 100 V...
  • Page 233 RN55D1810F Mepco Electra Res. 750 ohm RN60D7500F Mepco Electra Res. 100 ohm RC07GF100K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A4A2 LOG DETECTOR 1.6 MHz PC BOARD (3493-2) RESISTORS Res. 200-300 ohm RN55D****F Mepco Electra Res. 1 kilohm RC07GF101K Allen Bradley Res.
  • Page 234 Res. 15 kilohm RC07GF153K Allen Bradley Res. Var. 2 kilohm TYPE 100-1-202 Res. 1 kilohm RC07GF101K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A4A2 LOG DETECTOR 1.6 MHz PC BOARD (3493-2) RESISTORS Res. 10 kilohm RC07GF1002K Allen Bradley Res. 10 ohm RC07GF100K...
  • Page 235 Stanwyck Choke 100 µH 21000M Stanwyck Choke 100 µH 21000M Stanwyck Choke 100 µH 21000M Stanwyck Choke 100 µH 21000M Stanwyck EM-2115 REPLACEMENT PARTS LIST A4A3 LOG DETECTOR 8.7 MHz PC BOARD (3493-3) CHOKES Choke 100 µH 21000M Stanwyck (EM215G-55)
  • Page 236 Cap. 2.2 µF 15 V TDS-115-225 Arco Cap. 2.2 µF 15 V TDS-115-225 Arco Cap. 470 pF CM05F471G03 Arco Cap. 1000 pF CM05F102G03 Arco Cap. 1000 pF CM05F102G03 Arco EM-2115 REPLACEMENT PARTS LIST A4A3 LOG DETECTOR 8.7 MHz PC BOARD (3493-3) CAPACITORS (EM215G-56)
  • Page 237 Allen Bradley Res. 40.2 ohm RN60D4020F Mepco Electra Res. 181 ohm RN55D1810F Mepco Electra Res. 750 ohm RN60D7500F Mepco Electra Res. 100 ohm RC07GF100K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A4A3 LOG DETECTOR 8.7 MHz PC BOARD (3493-3) RESISTORS (EM215G-57)
  • Page 238 Allen Bradley Res. 1.8 kilohm RC07GF182K Allen Bradley Res. 221 ohm RN55D2210F Mepco Electra Res. 15 kilohm RC07GF153K Allen Bradley Res. Var. 2 kilohm TYPE 100-1-202 EM-2115 REPLACEMENT PARTS LIST A4A3 LOG DETECTOR 8.7 MHz PC BOARD (3493-3) RESISTORS (EM215G-58)
  • Page 239 Diode 1N3064 T.I. Diode 1N3064 T.I. CHOKES/COIL ASSEMBLIES Choke 1 mH 1000µH-WEE-WEE Nytronics Choke 1 mH 1000µH-WEE-WEE Nytronics Choke 1 mH 1000µH-WEE-WEE Nytronics Choke 1 mH 1000µH-WEE-WEE Nytronics EM-2115 REPLACEMENT PARTS LIST A5A1 DISCRIMINATOR 175 kHz PC BOARD (8656-1) (EM215G-59)
  • Page 240 Res. 100 kilohm RC07GF104K Allen Bradley Res. 390 ohm RC07GF391K Allen Bradley Res. 100 kilohm RC07GF104K Allen Bradley Res. 100 kilohm RC07GF104K Allen Bradley Res. 100 kilohm RC07GF104K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A5A1 DISCRIMINATOR 175 kHz PC BOARD (8656-1) (EM215G-60)
  • Page 241 DIODES Diode 1N270 Motorola Diode 1N270 Motorola Diode 1N3064 T.I. Diode 1N3064 T.I. CHOKES/COIL ASSEMBLIES Choke 1 mH 1000µH-WEE-WEE Nytronics Choke 470 µH 470µH-WEE-WEE Nytronics Choke 1 mH 1000µH-WEE-WEE Nytronics Choke 1 mH 1000µH-WEE-WEE Nytronics EM-2115 REPLACEMENT PARTS LIST (EM215G-61)
  • Page 242 Res. 100 kilohm RC07GF104K Allen Bradley Res. 390 ohm RC07GF391K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res. 47 kilohm RC07GF473K Allen Bradley Res. 47 kilohm RC07GF473K Allen Bradley EM-2115 REPLACEMENT PARTS LIST (EM215G-62)
  • Page 243 EM-21105 APPENDIX G REPLACEABLE COMPONENTS A5A2 DISCRIMINATOR 1.6 MHz PC BOARD (8656-2) RESISTORS Res. 39 kilohm RC07GF393K Allen Bradley Res. 27 kilohm RC07GF273K Allen Bradley Res. 680 ohm RC07GF681K Allen Bradley Res. 470 ohm RC07GF471K Allen Bradley A5A3 DISCRIMINATOR 8.7 MHz PC BOARD (8656-3) CRYSTALS Crystal 8.7 MHz International Crystal...
  • Page 244 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A5A3 DISCRIMINATOR 8.7 MHz PC BOARD (8656-3) CHOKES/COIL ASSEMBLIES T4002 Coil Assy A-4819-2 T4003 Coil Assy A-4819-3 T4004 Coil Assy A-4819-4 CAPACITORS Cap. 0.01 µF CK05BX103K Murata Erie Cap. 390 pF...
  • Page 245 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A5A3 DISCRIMINATOR 8.7 MHz PC BOARD (8656-3) RESISTORS Res. 680 ohm RC07GF681K Allen Bradley Res. 100 kilohm RC07GF104K Allen Bradley Res. 390 ohm RC07GF391K Allen Bradley A6A1 0.1 NB CRYSTAL FILTER PC BOARD (3840-2) CRYSTAL FILTERS 8.7 MHz...
  • Page 246 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A6A1 0.1 NB CRYSTAL FILTER PC BOARD (3840-2) CAPACITORS Cap. 0.01 µF CK05BX-103-K Murata Erie Cap. 0.01 µF CK05BX-103-K Murata Erie Cap. 0.01 µF CK05BX-103-K Murata Erie Cap. 2.2 µF 35 V...
  • Page 247 EM-21105 APPENDIX G REPLACEABLE COMPONENTS EM-2115 REPLACEMENT PARTS LIST A6A1 0.1 NB CRYSTAL FILTER PC BOARD (3840-2) RESISTORS Res. 15 kilohm RC07GF153K Allen Bradley Res. 12 kilohm RC07GF123K Allen Bradley Res. 1 kilohm RC07GF102K Allen Bradley Res. Var. 2 kilohm TYPE-100-1-202 Res.
  • Page 248 EM-21105 APPENDIX G REPLACEABLE COMPONENTS Res. 1 kilohm RC07GF102K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A6A1 0.1 NB CRYSTAL FILTER PC BOARD (3840-2) RESISTORS Res. 1.0 kilohm TYPE-100-1-202 Allen Bradley Res. 6.8 kilohm RC07GF682K Allen Bradley Res. 6.8 kilohm RC07GF682K Allen Bradley Res.
  • Page 249 EM-21105 APPENDIX G REPLACEABLE COMPONENTS Integrated Circuit µA74111C National Integrated Circuit CD4052BE National EM-2115 REPLACEMENT PARTS LIST A8 DETECTOR PC BOARD (8741) INTEGRATED CIRCUIT Integrated Circuit CD4053BE National Integrated Circuit CD4053BE National Integrated Circuit CD4053BE National Integrated Circuit CD4053BE National...
  • Page 250 Cap. 0.1 µF 8131100W5R014K Murata Erie Cap. 0.1 µF 8131100W5R014K Murata Erie Cap. 0.1 µF 8131100W5R014K Murata Erie EM-2115 REPLACEMENT PARTS LIST A8 DETECTOR PC BOARD (8741) CAPACITORS Cap. 0.1 µF 8131100W5R014K Murata Erie Cap. 2.2 µF TD10135-225-25 General Inst.
  • Page 251 Res. 7.32 kilohm RN55D7321F Allen Bradley Res. 4.7 kilohm RC07GF472K Allen Bradley Res. 1.0 Megohm RC07GF105K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A8 DETECTOR PC BOARD (8741) RESISTORS Res. 27 kilohm RC07GF273K Allen Bradley Res. 121 kilohm RN60D1213F Mepco Electra Res.
  • Page 252 Res. 10 kilohm RC07GF103K Allen Bradley Res. 8.2 kilohm RN55D1501F Bourns Res. 47 kilohm RC07GF822K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A8 DETECTOR PC BOARD (8741) RESISTORS Res. 8.2 kilohm RC07GF822K Allen Bradley Res. 4.7 kilohm RC07GF472K Allen Bradley Res. 27 kilohm...
  • Page 253 DIODES Diode 1N3064 National Diode 1N3064 National Diode FD-300 Solitron EM-2115 REPLACEMENT PARTS LIST A9 AUDIO/AMPLIFIER PC BOARD (8869) CAPACITORS Cap. 2.2 µF 35 V TD1035-225-25 Arco Cap. 2.2 µF 35 V TD1035-225-25 Arco Cap. 2.2 µF 35 V TD1035-225-25 Arco Cap.
  • Page 254 8131100651474M Murata Erie Cap. 0.68 pF 100 V CM05F680G03 Arco Cap. 0.1 µF 100 V 8131100W5R0104K Murata Erie EM-2115 REPLACEMENT PARTS LIST A9 AUDIO/AMPLIFIER PC BOARD (8869) RESISTORS Res. 80.6 kilohm RN55D8062F Mepco Electra Res. 20 kilohm RN55D2002F Mepco Electra Res.
  • Page 255 Res. 4.7 kilohm RC07GF472K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley Res. 2.2 kilohm RC07GF222K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A9 AUDIO/AMPLIFIER PC BOARD (8869) RESISTORS Res. 120 ohm RC07GF121K Allen Bradley Res. 100 ohm RC07GF101K Allen Bradley Res.
  • Page 256 LM-1458N National Integrated Circuit LM-1458N National Integrated Circuit LM-1458N National Integrated Circuit LM-304H National Integrated Circuit LM-1458N National EM-2115 REPLACEMENT PARTS LIST A10 TUNE CONTROL PC BOARD (6325-1) TRANSISTORS Transistor 2N2484 National DIODES Diode 1N3064 National Diode 1N3064 National Diode...
  • Page 257 Cap. 2.2 µF 35 V TD1035-225-25 Sprague Cap. 2.2 µF 35 V TD1035-225-25 Sprague Cap. 1000 pF CK05BX102K Centralab EM-2115 REPLACEMENT PARTS LIST A10 TUNE CONTROL PC BOARD (6325-1) CAPACITORS Cap. 10 µF 25 V 199D10GX0025CBI Sprague Cap. 10 µF 25 V 199D10GX0025CBI Sprague Cap.
  • Page 258 Res. 1.5 Megohm RN60D1504F Mepco Electra Res. 1.5 Megohm RN60D1504F Mepco Electra Res. 100 ohm RC07GF101K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A10 TUNE CONTROL PC BOARD (6325-1) RESISTORS Res. 1.5 Megohm RN60D1504F Mepco Electra Res. 100 ohm RC07GF101K Allen Bradley Res.
  • Page 259 Res. 10 kilohm RC07GF103K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley Res. Var. 3262X-1-103K Bourns EM-2115 REPLACEMENT PARTS LIST A10 TUNE CONTROL PC BOARD (6325-1) RESISTORS Res. 2.2 Megohm RC07GF225K Allen Bradley Res. 6.8 kilohm RC07GF682K Allen Bradley Res. Var.
  • Page 260 INTEGRATED CIRCUITS Integrated Circuit CD4053BE Integrated Circuit CD4052BE Integrated Circuit CD4052BE Integrated Circuit CD4053BE Integrated Circuit LM-1458N National EM-2115 REPLACEMENT PARTS LIST A11 SWEEP PC BOARD (9169) INTEGRATED CIRCUITS Integrated Circuit LM-1458N National Integrated Circuit LM-1458N National Integrated Circuit LM-1458N National...
  • Page 261 CR23 Diode 1N3064 National CR24 Diode 1N3064 National CR26 Diode 5082-2810 CR27 Diode 5082-2810 EM-2115 REPLACEMENT PARTS LIST A11 SWEEP PC BOARD (9169) DIODES CR29 Diode FD-300 National CR32 Diode 1N3064 National CAPACITORS Cap. 0.47 µF 100 V 8131100651474-M Murata Erie Cap.
  • Page 262 Res. 90.9 kilohm RN55D9091F Mepco Electra Res. 178 kilohm RN60D1783F Mepco Electra Res. 2.7 kilohm RC07GF272K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A11 SWEEP PC BOARD (9169) RESISTORS Res. 22 kilohm RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res.
  • Page 263 Res. 3.3 kilohm RC07GF332K Allen Bradley Res. 15 kilohm RC07GF153K Allen Bradley Res. 15 kilohm RC07GF153K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A11 SWEEP PC BOARD (9169) RESISTORS Res. 39 kilohm RC07GF393K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley Res.
  • Page 264 Res. 100 ohm RC07GF101K Allen Bradley Res. 100 ohm RC07GF101K Allen Bradley Res. 100 ohm RC07GF101K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A11 SWEEP PC BOARD (9169) RESISTORS Res. 100 ohm RC07GF101K Allen Bradley Res. 100 ohm RC07GF101K Allen Bradley Res.
  • Page 265 9001-103-1003 Murata Erie A12A1 PRESCALER PC BOARD (8617) INTEGRATED CIRCUITS Integrated Circuits µA723PC National Integrated Circuits GPD-461 Avantek EM-2115 REPLACEMENT PARTS LIST A12A1 PRESCALER PC BOARD (8617) TRANSISTORS 60 V MOSPOWER VN10KM Siliconix 60 V MOSPOWER VN10KM Siliconix Transistor 2N2222...
  • Page 266 Res. 4.7 kilohm RC05GF472J Allen Bradley Res. 12 kilohm RC05GF123K Allen Bradley Res. 4.7 kilohm RC05GF472J Allen Bradley EM-2115 REPLACEMENT PARTS LIST A12A1 PRESCALER PC BOARD (8617) RESISTORS Res. 4.7 kilohm RC05GF472J Allen Bradley Res. 330 ohm RC05GF331K Allen Bradley Res.
  • Page 267 Lambda FUSES 1.5 A 1.5A SLO-BLO Bussman FILTERS/CONNECTORS AC Conn., Filtered 6J4(VS-F) CORCOM EM-2115 REPLACEMENT PARTS LIST A14 POWER SUPPLY ASSEMBLY (8601) CAPACITORS Cap. 9000 µF 40 V G5902U040R4C Mallory Cap. 9000 µF 40 V CG5902U040R4C Mallory Cap. 0.1 µF...
  • Page 268 Diode 2A400 Solitron CR13 Diode 2A400 Solitron CR14 Diode 2A400 Solitron EM-2115 REPLACEMENT PARTS LIST A14A1 POWER SUPPLY PC BOARD (8623) RESISTORS Res. 2.2 ohm RC32GF2R2K Allen Bradley Res. 2.2 ohm RC32GF2R2K Allen Bradley Res. 3.9 kilohm RC07GF392K Allen Bradley Res.
  • Page 269 Res. 3.3 kilohm RC07GF332K Allen Bradley Res. 4.7 kilohm RC07GF472K Allen Bradley Res. 4.7 kilohm RC07GF472K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A15 POWER SUPPLY FILTER ASSEMBLY (8639) CAPACITORS Cap. 1000 pF 2402-X5U-102P Tusonix Cap. 1000 pF 2402-X5U-102P Tusonix Cap. 1000 pF...
  • Page 270 2402-X5U-102P Tusonix A15A1 POWER SUPPLY FILTER INTERCONECTION PC BOARD (8632) INTEGRATED CIRCUITS Integrated Circuit 74HC244PC National Integrated Circuit 74HC244PC National EM-2115 REPLACEMENT PARTS LIST A15A1 POWER SUPPLY FILTER INTERCONECTION PC BOARD (8632) DIODES Diode 1N3064 National Diode 1N3064 National Diode...
  • Page 271 RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A15A1 POWER SUPPLY FILTER INTERCONECTION PC BOARD (8632) RESISTORS Res. 22 kilohm RC07GF223K Allen Bradley Res. 3.3 kilohm RC07GF332K Allen Bradley Res.
  • Page 272 LL50 Choke 300 µH LL-300 Choke 300 µH LL-300 Choke 300 µH LL-300 Choke 1000 µH 1000 H-WEE-WEE Nytronics EM-2115 REPLACEMENT PARTS LIST A16 INTERFACE PC BOARD (8629) INTEGRATED CIRCUITS Integrated Circuit LM1458 National Integrated Circuit LM1458 National Integrated Circuit...
  • Page 273 Diode 1N3064 National Diode 1N3064 National Diode 1N3064 National Diode 1N3064 National Diode 1N3064 National EM-2115 REPLACEMENT PARTS LIST A16 INTERFACE PC BOARD (8629) DIODES Diode 1N3064 National Diode 1N3064 National CR12 Diode 1N5059 G.E. CR13 Diode, Zener GEZD 3.3V G.E.
  • Page 274 Res. Var. 3262-X-103 Bourns Res. Var. 3262-X-103 Bourns Res. Var. 3262-X-103 Bourns Res. Var. 3262-X-103 Bourns EM-2115 REPLACEMENT PARTS LIST A16 INTERFACE PC BOARD (8629) RESISTORS Res. Var. 3262-X-103 Bourns Res. Var. 3262-X-103 Bourns Res. Var. 3262-X-103 Bourns Res. Var.
  • Page 275 Res. 2.2 kilohm RC07GF222K Allen Bradley Res. 2.2 kilohm RC07GF222K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A16 INTERFACE PC BOARD (8629) RESISTORS Res. 10 kilohm RC07GF103K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley Res.
  • Page 276 Res. 22 kilohm RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley EM-2115 REPLACEMENT PARTS LIST A16 INTERFACE PC BOARD (8629) RESISTORS Res. 22 kilohm RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res.
  • Page 277 EM-21105 APPENDIX G REPLACEABLE COMPONENTS Res. 10 kilohm RC07GF103K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res. 22 kilohm RC07GF223K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley Res. 10 kilohm RC07GF103K Allen Bradley Res.
  • Page 278 ELECTRO-METRICS EM-2115 APPENDIX H LIST OF SCHEMATICS APPENDIX H EM-2115 LIST OF SCHEMATICS FIGURE TITLE NUMBER Impulse Generator (A2A16A5) C-6141-1A RF Tuner/Stator P.C. Board (A2A16A1) R-8733A RF Tuner Bands 1-9 (A2A1-A2A9) R-3416-P RF Tuner Band 10 (A2A10) D-8727 RF Tuner Band 11 (A2A11)q...

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