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Boonton 1121A Instruction Manual

Programmable audio analyzer
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Wireless Telecom Group
25 EASTMANS ROAD, PARSIPPANY, NJ 07054
Telephone:
973-386-9696
Fax: 973-386-9191
Email:
boonton@boonton.com
Web:
www.wtcom.com
INSTRUCTION MANUAL
MODEL 1121A
PROGRAMMABLE
AUDIO ANALYZER
REV DATE 05/16
MANUAL P/N 98407600A

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Summary of Contents for Boonton 1121A

  • Page 1 INSTRUCTION MANUAL MODEL 1121A PROGRAMMABLE AUDIO ANALYZER REV DATE 05/16 MANUAL P/N 98407600A Wireless Telecom Group 25 EASTMANS ROAD, PARSIPPANY, NJ 07054 Telephone: 973-386-9696 Fax: 973-386-9191 Email: boonton@boonton.com Web: www.wtcom.com...
  • Page 2 This page intentionally blank.
  • Page 3 Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Boonton Electronics assumes no liability for the customer’s failure to comply with these requirements.
  • Page 4 This page intentionally blank.

  • Page 5: Table Of Contents

    Table of Contents Paragraph Page SECTION I - GENERAL INFORMATION 1-1. INTRODUCTION ........................1-1 1-3. DESCRIPTION ........................1-1 1-5. ACCESSORIES ........................1-1 1-7. OPTIONS ..........................1-1 1-9. SPECIFICATIONS ......................... 1-1 SECTION II - INSTALLATION 2-1. INTRODUCTION ........................2-1 2-3. UNPACKING ........................2-1 2-5.
  • Page 6 Paragraph Page 3-30. Using the Ratio Mode ......................3-9 3-31. Ratio Measurement Display Units ..................3-9 3-32. Using Analyzer Filters ......................3-10 3-35. Audio Oscillator General Description ................. 3-10 3-36. Oscillator Output Description ..................... 3-11 3-37. Source Frequency Display and Selection ................3-11 3-38.
  • Page 7 Paragraph Page 3-96. Program Function Mnemonics ................... 3-22 3-97. Number Formatting ......................3-22 3-98. Data String Format ......................3-22 3-99. Data String Errors ......................3-23 3-100. Data String Examples ...................... 3-23 3-101. Store and Recall Operation .................... 3-23 SECTION IV - THEORY OF OPERATION 4-1.
  • Page 8 Paragraph Page 5-37. Residual Distortion and Noise .................... 5-8 5-39. Residual Signal-to-Noise Ratio .................... 5-8 5-41. Common Mode Rejection Ratio ................... 5-8 5-42. Optional Filter Accuracy ....................... 5-8 5-43. Optional Filter Test Connections ..................5-8 5-44. 400 Hz High-Pass Filter Accuracy ..................5-10 5-45.
  • Page 9 LIST OF TABLES Table Page TABLE 1-1. PERFORMANCE SPECIFICATIONS ............... 1-2 TABLE 1-1. PERFORMANCE SPECIFICATIONS CONTINUED ..........1-3 TABLE 1-1. PERFORMANCE SPECIFICATIONS CONTINUED ..........1-4 TABLE 1-1. PERFORMANCE SPECIFICATIONS CONTINUED ..........1-5 TABLE 2-1 INITIAL CONDITIONS ....................2-2 TABLE 3-1. CONTROLS, INDICATORS AND CONNECTORS ........... 3-3 TABLE 3-2.
  • Page 10 Figure 5-2. Removing Top and Bottom Trim Extrusions ............. 5-3 Figure 5-3. Removing Circuit Boards .................... 5-3 Figure 6-1. Model 1121A Programmable Audio Analyzer ............6-2 Figure 6-2. ‘1121A’ Frame Assy (A22) ..................6-4 Figure 6-3. PWA ‘1121A’ Input (A0) ....................6-7 Figure 6-4.
  • Page 11 Figure Page Figure 7-9. Detector Board A3 Parts Location Diagram ............. 7-12 Figure 7-10. Detector Board A3.1 Schematic ................7-13 Figure 7-11. Detector Board A3.2 Schematic ................7-15 Figure 7-12. Counter Board A4 Parts Location Diagram ............7-16 Figure 7-13. Counter Board A4 Schematic ................7-17 Figure 7-14.
  • Page 12 MODEL 1121A AUDIO ANALYZER VIII...

  • Page 13: Section I - General Information

    Model 1121A. The result is an audio analyzer that is instrument to a previous operating mode can be stored in easy and convenient to use. Among the outstanding non-volatile memory for future recall.

  • Page 14: Residual Distortion And Noise

    Section 1 General Information TABLE 1-1 PERFORMANCE SPECIFICATIONS. SYSTEM SPECIFICATIONS Signal-to-Noise Distortion Fundamental Frequency Range: Residual Distortion and Noise (the greater of): 10 Hz to 100 kHz usable to 140 kHz -80 dB or 10 µV; 10 Hz to 20 kHz, 80 kHz BW Display Range: 0.00 to 140.00 dB -74 dB or 20 µV;...

  • Page 15: Common Mode Rejection Ratio

    General Information Section 1 TABLE 1-1 PERFORMANCE SPECIFICATIONS Timebase Accuracy: Type: 10 MHz TCXO Accuracy: ±1 ppm/yr ± 1 dB; 20 Hz to 20 kHz ± 2 dB; 10 Hz to 100 kHz AC Level Measurement Input Voltage Range: 50 mV to 300 V Range: (full scale) 300.0 V, 30.00 V, 3.000 V, Distortion Measurement Range: 300.0 mV, 30.00 mV, 3.000 mV, 0.3000 Mv...
  • Page 16 Section 1 General Information TABLE 1-1 PERFORMANCE SPECIFICATIONS Analyzer Measurement Speed 10 Hz to 100 kHz, all bandwidths 60 dB (typical); 50 mV to 100 mV Input Voltage Range Function First Reading Rate: Frequency < 1 sec 4 rdngs/sec Standard Audio Filters Level <...

  • Page 17: Options

    General Information Section 1 TABLE 1-1 PERFORMANCE SPECIFICATIONS Ventilation Requirements: Options: -01 Rear panel input and output 1-1/2 inch clearance after installation, top, side, -11 400 Hz high-pass filter rear -12 CCITT band-pass filter -13 CCIR band-pass filter Temperature: -15 A weighting filter Non-Operating: -40 to 75 degrees C -16 B weighting filter -17 C weighting filter...
  • Page 18 Section 1 General Information This page intentionally blank.

  • Page 19: Section Ii - Installation

    2-2. This section contains the unpacking, mounting, power requirements, cable connections, and preliminary 2-10. CABLE CONNECTIONS. check-out instructions for the Model 1121A Audio Analyzer. 2-11. Front panel connector: 2-3. UNPACKING. INPUT. Analyzer Input HIGH and LOW BNC type connectors and chassis ground allow connection of ex- 2-4.

  • Page 20: Preliminary Check

    2-14. The preliminary check verifies that the Model 1121A is operational and should be performed before the instrument is placed into use. To perform the preliminary check, set the front panel LINE switch to ON. Wait several seconds then depress the LCL/INIT key. The SOURCE display will contain the instrument firmware number and the other displays will contain dashes for a period of about two seconds.

  • Page 21: Figure 2-1. Packing And Unpacking Diagram

    Installation Section 2 Figure 2-1. Packing and Unpacking Diagram.
  • Page 22 Section 2 Installation This page intentionally blank.

  • Page 23: Section Iii - Operation

    3-10. Function Selection. The DATA ENTRY keypad is 3-12. Many of the Model 1121A functions have multiple common to all functions of the Model 1121A. The KYBD display and entry modes. Listed in Table 3-2, Function legend determines the active display window to which the Display And Data Entry Units, are the display legends DATA ENTRY keypad is dedicated at any given time.

  • Page 24: Figure 3-1. Model 1121A, Front View

    Section 3 Operation Figure 3-1. Model 1121A, Front View Figure 3-2. Model 1121A, Rear View...
  • Page 25 Operation Section 3...
  • Page 26 Section 3 Operation...
  • Page 27 Operation Section 3...

  • Page 28: Analyzer Measurement Description

    3-14. Analyzer Input Description. The input configura- 1.000 V rms). Power in dBm units (dB relative to 1 mW) tion of the Model 1121A can be selected for single-ended can be selected for various impedances as described in or balanced/differential operation. The input mode can paragraph 3-74.
  • Page 29 Operation Section 3 key which illuminates both the key’s LED and the displayed in % while logarithmic measurements are KYBD legend in the ANALYZER display. The various displayed in dB where 0.00 dB is referenced to 100.0%. display modes can then be selected by depressing the Distortion measurements can also be displayed as an the appropriate units associated with the desired display absolute level in units of mV, V, dBV or dBm.
  • Page 30 Section 3 Operation...

  • Page 31: Special Distortion Measurement Modes

    70, 71, and 72. measurements. Measurement bandwidth is selectable to reject noise while accurately preserving harmonic 3-30. Using the Ratio Mode. The Model 1121A enables components. The combination of harmonics and noise is all measurement modes to be displayed as a relative displayed as a percentage of the total input signal value to a previous measurement value.

  • Page 32: Using Analyzer Filters

    (ARM) and applying an alternate measurement function. a gain correction value of -6.6 dB. The Model 1121A will accommodate both applications. The average or 3-32 Using Analyzer Filters. The audio filter keys are quasi-peak detector can be selected using special alternate action keys which means they are “toggled”...

  • Page 33: Oscillator Output Description

    3-36. Oscillator Output Description. The output frequency accuracy of the oscillator is not required. configuration of the Model 1121A can be selected for single-ended or balanced/floating operation using the 3-40. Source level Display and Selection. To select the Level function simply depress the LEVEL key.

  • Page 34: Step Size And Step Key Operation

    3-50. X AXIS Output Description. The X AXIS output of special functions 7 and 8. the Model 1121A is the scaled result of the sweep fre- quency or level relative to the START and STOP values. 3-44. Increment/Decrement Frequency Values. Fre-...

  • Page 35: Using The Sweep Mode

    Operation Section 3 3-54. Using The Sweep Mode. When the SWEEP entire status of the Model 1121A, including all functions, key is depressed the START value is transferred to the entered values and display modes, can be saved in a LEVEL or FREQ function, and the function is activated.

  • Page 36: Table 3-6. Output Level Ranges

    Section 3 Operation 3-64. Mode Alteration Functions. Codes 11 through 19 TABLE 3-6. OUTPUT LEVEL RANGES. alter the normal operation of the Model 1121A. When selected, the SPCL legend in the SOURCE display win- Level Ranges: Resolution: dow will remain illuminated as an indication of the special 16.000 to 3.005 V...
  • Page 37 Operation Section 3 TABLE 3-9. ERROR CODES. 3-15...

  • Page 38: Table 3-8. Option Switch A4S1

    Section 3 Operation TABLE 3-8. OPTION SWITCH A4S1. 3-16...

  • Page 39: Table 3-9. Error Codes

    Operation Section 3 TABLE 3-9. ERROR CODES. 3-17...

  • Page 40: Option Switch Functions

    3-79. Error Codes. Error codes and descriptions for allow selection of the delay for each sweep step. The the Model 1121A are listed in Table 3-9. The error codes delay is based on the number of consecutive analyzer will appear in the SOURCE display window and will be measurements before a data point is plotted.
  • Page 41 Operation Section 3 3-19...
  • Page 42 Section 3 Operation 3-20...

  • Page 43: Returning To Local Mode

    To prevent the display from giving false indications the selected by sending the appropriate mnemonic with the display may be blanked using the (BL) command. Model 1121A addressed as a listener. The selected mode will remain in effect until changed. 3-21...

  • Page 44: End-Of-String (Eos) Control

    Section 3 Operation 3-96. Program Function Mnemonics. Each front 3-93. End-Of-String (EOS) Control. The instrument panel key is assigned a program mnemonic. provides several end-of-string options to accommodate a Programming the mnemonic, followed by unit values, if wide variety of controllers. The instrument always ter- appropriate, is analogous to manual front-panel minates on EOI (end-or-identify) true and always sends operation.

  • Page 45: Data String Errors

    Operation Section 3 3-100. Data String Examples. The following are ex- ASCII characters having hexadecimal values of 0 to 23 and 26 to 2B are ignored. The ASCII ($) and (&), amples of typical programming strings in HP BASIC: hexadecimal 24 and 25, are reserved. Lower case letters OUTPUT 715;...
  • Page 46 Section 3 Operation This page intentionally blank. 3-24...

  • Page 47: Section Iv - Theory Of Operation

    99 complete sets of instrument setup data. Commonly used 4-2. The Model 1121A is a versatile, solid-state, micro- setups can be entered into non-volatile memory either processor controlled, audio analyzer that covers the through the keyboard or through the IEEE-488 interface;...
  • Page 48 Section 4 Theory of Operation resident in read-only-memory (ROM). Timing of the mi- to boost harmonic and noise content in the pass band of croprocessor operations is controlled by a 5 MHz clock. A the notch filter by up to 80 dB. Low-pass filter selections random-access-memory (RAM) provides storage ca- are provided before the last stage of the amplifier to pability for microprocessor data.

  • Page 49: Detailed Circuit Description

    S2 alters the connections to the primaries of T1 and T2 allowing the Model 1121A to operate from line voltages of 100 to 240 volts. The dual power supplies provide fixed and floating sources of +5, +15 and -15 volts. The fixed...

  • Page 50: Figure 4-3. Cpu Circuits Block Diagram

    Section 4 Theory of Operation Figure 4-3. CPU Circuits Block Diagram.

  • Page 51: A10 Motherboard Circuits

    A15. Memory address space partitioning is circuits of the Model 1121A. The motherboard circuits divided equally between RAM and ROM and is include the connectors for the plug-in boards, the power accomplished through inverter U1d.

  • Page 52: Figure 4-4. Frequency Counter Circuits Block Diagram

    Section 4 Theory of Operation Figure 4-4. Frequency Counter Circuits Block Diagram 4-25. The RAM is powered from a non-volatile power ory buffers as required in response to bus commands. supply consisting of Q1, CR1 and BT1 (TP9). If a power U17 and U18 are buffer circuits which connect U16 to the fault occurs, circuits in the power supply activate the IEEE-488 bus via J20.

  • Page 53: A12 Display And A13 Keyboard Circuits

    U1a (TP1) is applied to the input multiplexer, U5, of the face to the Model 1121A circuits. Key closures are counter. U5 selects one of four inputs; source frequency, detected and sent to the microprocessor which interprets analyzer frequency, external reference, and internal and modifies the display LEDs appropriately.

  • Page 54: A0 Input Circuits

    DC levels to a 12 bit binary representation where tection and AC/DC mode switching for the Model 1121A. full scale is an input level of +5 volts. Reference U20 Refer to Figure 4-5.

  • Page 55: A1 Filter Circuits

    Theory of Operation Section 4 Figure 4-6. Filter Circuits Block Diagram. 4-46. A 40 dB attenuator is formed by resistors R3 4-49. The common mode (TP4) and differential (TP6) through R7, R15, and R16. This attenuator is engaged by signals are separately monitored by window detectors relays K6 and K7 for level ranges above 30 volts.

  • Page 56: A2 Notch Filter Circuits

    Section 4 Theory of Operation waveform. Capacitor C7 is required by U6 for filter U10 and associated circuits. Analog switch U11a and b in averaging. The output of U6 (TP5) is measured by one conjunction with buffer U12a select the gain depending channel of the A/D converter on the counter plug-in on range information from the control program.

  • Page 57: A3 Detector Circuits

    R14, and U7. schmitt triggers, and the rms, average and quasi-peak detectors for the Model 1121A. Refer to Figure 4-8. 4-62. Relay K1 is selected by the control program to insert the notch filter into the signal path in the distortion and SINAD measurement modes.

  • Page 58: Figure 4-8. Detector Circuits Block Diagram

    5 Hz high-pass filter which determines the low frequency R37 and R37 balance the gain of the average and rms bandwidth of the Model 1121A. Buffer amplifier U17 and detectors to be equal for a sine-wave input waveform. CR14, CR15 and R55 present the detector output signal...

  • Page 59: Figure 4-9. Source Circuits Block Diagram

    Theory of Operation Section 4 Figure 4-9. Source Circuits Block Diagram. 4-67. Detector selection is controlled by the data latched frequency bands. Integrating amplifier U12b completes in U1 by the control program. Dual one-of-four decoder the integrator (TP1). Coarse tuning of the oscillator is U8 decodes the latched data to analog switches U9 and provided by the selection of resistor and capacitor com- U11.

  • Page 60: A7 Output Circuits

    Section 4 Theory of Operation 4-73. A quadrature detector is formed by U1 and associ- panel heat sink), the variable gain and attenuation to ated components. The output of U1 is a TTL compatible cover a level range of 0.01 mV to 16 volts, and the square wave used in the ALC loop to detect the peak of programmable DC voltage used to fine tune the the source output waveform.

  • Page 61: Figure 4-10. Output Circuits Block Diagram

    Theory of Operation Section 4 Figure 4-10. Output Circuits Block Diagram. 4-80. A power-on delay circuit is formed by R37, C24, and U9c. The one second delay provides time for the CPU to initialize the source circuits. When power is applied, C24 charges through R37 to +5 volts.
  • Page 62 Section 4 Theory of Operation This page intentionally blank. 4-16...

  • Page 63: Section V - Maintenance

    To replace the covers, reverse the removal and adjustment for the Model 1121A Audio Analyzer. procedure. 5-3. SAFETY REQUIREMENTS. 5-4. Although this instrument has been designed in...
  • Page 64 Section 5 Maintenance...
  • Page 65 Maintenance Section 5 5-13. Optional Filters. Install the optional filters as follows: a. Remove the instrument top cover as described in paragraph 5-10. b. Remove the Filter board (brown extractors). Re fer to paragraph 5-12. Place the board on a flat working surface with the components up and the extractors at the top.

  • Page 66: Plug-In Circuit Board

    Section 5 Maintenance c. Locate EPROM A5U14. Remove the IC with a NOTE straight pull away from the board. There are two positions available for optional filters. d. EPROM is a replaceable part and does not require These positions are located on the right and left-center reprogramming.

  • Page 67: Performance Tests

    SOURCE display will indicate special function 10. Audio Analyzer. f. If any of the optional filters are installed, set the a. Inspect all external surfaces of Model 1121A for Calibrator to the reference frequency and level listed in physical damage, breakage, loose or dirty contacts, and Table 5-2 designated for the filter to be calibrated and missing components.

  • Page 68: Analyzer Level Flatness

    Depress the RATIO key to enable the ratio mode. f. Enter the Model 1121A test level at a frequency of h. Connect the 150 ohm load across the binding post 1 kHz and record the measurement in the ACTUAL adapters at the input of the Analyzer.

  • Page 69: Analyzer Low Level Ac Accuracy

    CHANNEL A input and set the Frequency Counter in Table 5-8. controls as follows: a. On the Model 1121A enter the test level at a fre- FUNCTION........FREQ A quency of 1 kHz. Before entering the 6.0 mV down-scale GATE TIME ........10 sec test level, the 300 mV range must be held by entering the DISPLAY POSITION ......

  • Page 70: Low-Pass Filter Accuracy

    Section 5 Maintenance ment and enter special function 75 (50 ohm output). 5-35. Low-Pass Filter Accuracy. The filter accuracy test Connect the source HI and LOW outputs using the bal- is made by setting an amplitude ratio reference at a anced cable and adapters to the Analyzer HI and LOW frequency of 1 kHz and adjusting the frequency at the inputs and connect the 50 ohm load across the binding...

  • Page 71: Table 5-3. Analyzer Dc Levelaccuracytest Record

    Maintenance Section 5 TABLE 5-3. ANALYZER DC LEVEL ACCURACY TEST RECORD.

  • Page 72: Ccitt Filter Accuracy

    Section 5 Maintenance detector. 5-44. 400 Hz High-Pass Filter Accuracy. Perform the test as follows: d. Enable the CCIR band-pass filter and set the Source to the frequencies listed in Table 5-16 and record a. Set the Source to a frequency of 1 kHz and a level the results, pass or fail.

  • Page 73: Table 5-4. Analyzer Ac Level Accuracy Test Record

    Maintenance Section 5 TABLE 5-4. ANALYZER AC LEVEL ACCURACY TEST RECORD. 5-11...

  • Page 74: Table 5-5. Analyzer Ac Level Flatness Test Record

    Section 5 Maintenance TABLE 5-5. ANALYZER AC LEVEL FLATNESS TEST RECORD. 5-12...

  • Page 75: Table 5-7. Source Level Accuracy Test Record

    Maintenance Section 5 TABLE 5-7. SOURCE LEVEL ACCURACY TEST RECORD. TABLE 5-8. SOURCE LEVEL FLATNESS TEST RECORD. 5-13...
  • Page 76 Section 5 Maintenance TABLE 5-9. SOURCE LOW LEVEL ACCURACY TEST RECORD. 5-14...

  • Page 77: Table 5-12. Filter Accuracy Test Record

    Maintenance Section 5 TABLE 5-12. FILTER ACCURACY TEST RECORD. 5-15...

  • Page 78: Table 5-14. Residual Signal-To-Noise Test Record

    Section 5 Maintenance TABLE 5-14. RESIDUAL SIGNAL-TO-NOISE TEST RECORD. 5-16...
  • Page 79 Maintenance Section 5 5-17...

  • Page 80: Table 5-17. Ccir Filter Accuracy Test Record

    Section 5 Maintenance TABLE 5-17. CCIR FILTER ACCURACY TEST RECORD. 5-18...

  • Page 81: Table 5-18. A Weighting Filter Accuracy Test Record

    Maintenance Section 5 TABLE 5-18. A WEIGHTING FILTER ACCURACY TEST RECORD. 5-19...
  • Page 82 Section 5 Maintenance 5-20...
  • Page 83 Maintenance Section 5 5-21...
  • Page 84 Section 5 Maintenance 5-22...

  • Page 85: Adjustments

    Verify that the line fuse is the proper value as listed on the LINE VOLTAGE SELECT chart located on the rear 5-51. The Model 1121A adjustments are listed in Table panel. 5-22. Test equipment required for the adjustments is listed in Table 5-1.

  • Page 86: A5 Cpu Adjustment

    Section 5 Maintenance 5-55. A5 CPU Adjustment. f. Observe the Wave Analyzer and alternately adjust A3R46 and A3R49 for a minimum indication. The null measurement should be in excess of 40 dB. 5-56. The only adjustment on the CPU Board is the Timebase Frequency Adjustment which is adjusted to 5-60.

  • Page 87: A0C5 And A0C32 Flatness Adjustments

    Perform the adjustments as follows: Perform the adjustments as follows: a. Depress the LCL/INIT key to initialize the instru- a. Depress the LCL/INIT key on the Model 1121A to ment. initialize the instrument. Connect the Model 1121A HI and LOW outputs to the Multimeter HI and LOW inputs using b.

  • Page 88: A37 Ccir, Ccir/Arm Filter Board Adjustment

    5-75. Selective failures and performance out of specifi- cation are usually limited to one section of the instrument e. Set the Model 1121A level to 3.000 volts at a and will be evident from manipulation of the front panel frequency of 1 kHz and enter special function 75 (50 ohm controls.

  • Page 89: Counter Plug-In Board Test

    Wrap the Model 1121A in polyethylene sheeting. 5-83. Input and Filter Plug-in Board Test. The Input and filter plug-in boards can be tested using special b.
  • Page 90 Section 5 Maintenance TABLE 5-23 DIAGNOSTIC ERROR CODE DESCRIPTION. 5-28...

  • Page 91: Section Vi - Parts List

    PARTS LIST 6-1. INTRODUCTION. reference symbol, description, manufacturer, and both 6-2. The replaceable parts for the Model 1121A are listed the BEC and manufacturer part numbers. Table 6-1 lists the manufacturer’s Commercial and Government Entity in Table 6-2. The replaceable parts list contains the (CAGE) code numbers.

  • Page 92: Figure 6-1. Model 1121A Programmable Audio Analyzer

    Section 6 Parts List Figure 6-1. Model 1121A Programmable Audio Analyzer...
  • Page 93 Parts List Section 6...
  • Page 94 Section 6 Parts List Figure 6-2. ‘1121A’ Frame Assy (Sheet 1 of 2)
  • Page 95 Parts List Section 6 Figure 6-2. ‘1121A’ Frame Assy (Sheet 2 of 2)

  • Page 96: Table 6-2 Replaceable Parts List

    04901 11207701B 11207701B PWA OUTPUT 1121A 04901 11103202B 11103202B FRAME ASSY 1121A 04901 11220200A 11220200A 11220200A REV A FRAME ASSY 1121A (A22) (Figure 6-2) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER BEZEL ASSEMBLY 1121A...

  • Page 97: Figure 6-3. Pwa '1121A' Input (A0)

    Parts List Section 6 Figure 6-3. PWA ‘1121A’ Input (A0)
  • Page 98 Section 6 Parts List 11202803A PWA INPUT 1121A (A0) (Figure 6-3) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER C1-2 CAP MATCHED PAIR 04901 23418000A 23418000A C3-4 CAP CER CHIP 20pF 5% 500V COG 0805...
  • Page 99 Parts List Section 6 R30-31 RES CHIP 10K 1% 100PPM 1206 4S177 RCI-1206-1002F 33740000A R34-35 RES CHIP 4.99K 1% 100PPM 1206 4S177 RCI-1206-4991F 33736700A RES CHIP 20K 1% 100PPM 1206 4S177 RCI-1206-2002F 33742900A R37-42 RES CHIP 2.0K 1% 1/4W 1206 4S177 RCI-1206-2001F 33732900A...

  • Page 100: Figure 6-4. Pwa '1121A' Main Filter (A1)

    Section 6 Parts List Figure 6-4. PWA ‘1121A’ Main Filter (A1) 6-10...
  • Page 101 Parts List Section 6 11210501A PWA MAIN FILTER 1121A (A1) (Figure 6-4) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER C1-2 CAP ELEC 100uF 20% 25V SM SIZE F 54773 EEE-1EA101P 28339300A CAP CER CHIP 10pF 5% 50V 0805...

  • Page 102: Figure 6-5. Pwa '1121A' Notch (A2)

    Section 6 Parts List Figure 6-5. PWA ‘1121A’ Notch (A2) 6-12...
  • Page 103 Parts List Section 6 11208002A PWA NOTCH 1121A (A2) (Figure 6-5) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER C1-2 CAP CER CHIP 0.1uF 10% 50V 0805 31433 C0805C104K5RAC 20900500A CAP CER CHIP 430pF 1% 50V 0805...
  • Page 104 Section 6 Parts List R31-32 RES CHIP 100K 1% 1/8W 0805 4S177 RCI-0805-1003F 31850000A RES CHIP 1.000K 0.1% 1/8W 0805 4S177 TPI-0805-1001B 31830002A RES CHIP 2.00K 1% 1/8W 0805 4S177 RCI-0805-2001F 31832900A R35A RES CHIP 7.87K 0.1% 1/8W 0805 4S177 TPI-0805-7871B 31838602A R35B...

  • Page 105: Figure 6-6. Pwa '1121A' Detector (A3)

    Parts List Section 6 Figure 6-6. PWA ‘1121A’ Detector (A3) 6-15...
  • Page 106 Section 6 Parts List 11210001A PWA DETECTOR 1121A (A3) (Figure 6-6) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER CAP TANT CHIP 68uF 20% 25V EIA 7343-43 31433 B45025E6869M137 24001100A CAP TANT CHIP 10uF 20% 35V 7343-73...
  • Page 107 Parts List Section 6 RES CHIP 200 OHMS 0.1% 1/8W 0805 4S177 TPI-0805-2000B 31822902A RES CHIP 182 OHMS 1% 1/8W 0805 4S177 RCI-0805-1820F 31822500A RES CHIP 1.000K 0.1% 1/8W 0805 4S177 TPI-0805-1001B 31830002A R14A RES CHIP 7.87K 0.1% 1/8W 0805 4S177 TPI-0805-7871B 31838602A...
  • Page 108 Section 6 Parts List IC OPA2107 PRECISION DUAL OP AMP SO-8 01295 OPA2107AU 53807700A IC DG201A SPST ANALOG SWITCH SOIC-16 01295 DG201ACSE 53806600A IC LT1222 LOW NOISE HI SPEED OP AMP SOIC-8 64155 LT1222CS8#PBF 53807900A IC LM393M DUAL DIFF COMPARATOR 8-SOIC 07263 LM393M 53806900A...

  • Page 109: Figure 6-7. Pwa '1121A' Freq Counter (A4)

    Parts List Section 6 Figure 6-7. PWA ‘1121A’ Freq Counter 6-19...
  • Page 110 Section 6 Parts List 11201906A PWA FREQUENCY COUNTER 1121A (A4) (Figure 6-7) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER CAP CER CHIP 0.1uF 10% 50V 0805 31433 C0805C104K5RAC 20900500A CAP ELEC 100uF 20% 25V SM SIZE F...

  • Page 111: Figure 6-8. Pwa '1121A' Cpu (A5)

    Parts List Section 6 Figure 6-8. PWA ‘1121A’ CPU (A5) 6-21...
  • Page 112 Section 6 Parts List 11202706A PWA CPU 1121A (A5) (Figure 6-8) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER BATTERY LITHIUM POLY C COIN CELL 3V 61058 BR2325 55601900A C1-2, C4-6 CAP CER CHIP 0.1uF 10% 50V 0805...

  • Page 113: Figure 6-9. Pwa '1121A' Source (A6)

    Parts List Section 6 Figure 6-9. PWA ‘1121A’ Source (A6) 6-23...
  • Page 114 Section 6 Parts List 6-24...
  • Page 115 Parts List Section 6 6-25...

  • Page 116: Figure 6-10. Pwa '1121A' Output (A7)

    Section 6 Parts List Figure 6-10. PWA ‘1121A’ Output (A7) 6-26...
  • Page 117 Parts List Section 6 11103202A PWA OUTPUT 1121A (A7) (Figure 6-10) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER CAP CER CHIP 5.0pF +/-0.5pF 500V 0805 31433 C0805C509C5GACTU 20901500A CAP CER CHIP 24pF 5% 500V 0805...
  • Page 118 Section 6 Parts List RES CHIP 499K 1% 1/8W 0805 4S177 RCI-0805-4993F 31856700A R38-R44 RES CHIP 10.0K 1% 1/8W 0805 4S177 RCI-0805-1002F 31840000A IC AD7548 12-BIT CMOS DAC SOIC-20 51640 AD7548JRZ 53706100A IC TL072A LOW NOISE OP AMP SOIC-8 01295 TL072ACD 53805000A IC REF01 VOLTAGE REFERENCE 10V SOIC-8...
  • Page 119 Parts List Section 6 Figure 6-11. Front Bezel Assy (A17) 6-29...

  • Page 120: Figure 6-12. Pwa '1121A' Keyboard (A13)

    Section 6 Parts List Figure 6-12. PWA ‘1121A’ Keyboard (A13) 6-30...
  • Page 121 Parts List Section 6 11220300A REV A BEZEL ASSY 1121A (A17) (Figure 6-11) MODEL: 1121A REF. CAGE MFG PART PART DESIG. DESCRIPTION CODE NUMBER NUMBER REF 1 BEZEL 1121A 04901 75514800A 75514800A REF 2 FRONT PANEL 1121A 04901 60360000A 60360000A...
  • Page 122 Section 6 Parts List Figure 6-13. Bezel Sub Assy 6-32...

  • Page 123: Figure 6-14. Pwa '1121A' Display (A12)

    Parts List Section 6 Figure 6-14. PWA ‘1121A’ Display (A12) 6-33...
  • Page 124 Section 6 Parts List 11220400A REV A PWA DISPLAY 1121A (A12) (Figure 6-14) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER C1-2 CAP CER CHIP 0.1uF 10% 50V 0805 31433 C0805C104K5RAC 20900500A C3, C4 CAP TANT CHIP 15uF 20% 25V SM 7341-31...
  • Page 125 Parts List Section 6 IC SN74LS02 QUAD 2 INPUT POS NOR GATE 01295 SN74LS02D 53704200A IC CD4066BM CMOS QUAD BILATERAL SWITCH 01295 CD4066BM 53704300A IC LM339 QUAD COMPARATOR 14-SOP 07263 LM339M 53805200A VR1-3 IC LD1086 POS VOLT REGULATOR 3 PIN D2PAK K1422 LS1086D2T 53805500A...
  • Page 126 Section 6 Parts List Figure 6-15 Front Panel Assy 6-36...

  • Page 127: Figure 6-16. Rear Panel Assy (A21)

    Parts List Section 6 Figure 6-16. Rear Panel Assy (A21) (Sheet 1 of 2) 6-37...
  • Page 128 Section 6 Parts List Figure 6-16. Rear Panel Assy (A21) (Sheet 2 of 2) 6-38...

  • Page 129: Figure 6-17. Heat Sink Assy (A20)

    Parts List Section 6 Figure 6-17. Heat Sink Assy (A20) 6-39...
  • Page 130 Section 6 Parts List 11220700A REV A REAR PANEL ASSY 1121A (A21) (Figure 6-16) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER HEAT SINK ASSEMBY 1121A 04901 11220800A 11220800A PWA POWER AMPLIFIER 1121A 04901 11103402B 11103402B CAP PE 0.1uF 20% 250VAC...

  • Page 131: Figure 6-18. Power Amplifier (A24)

    Parts List Section 6 Figure 6-18. Power Amplifier (A24) 6-41...

  • Page 132: Figure 6-19. Transformer Assy (T1)

    Section 6 Parts List Figure 6-19. Transformer Assy (T1) 6-42...
  • Page 133 Parts List Section 6 Figure 6-20. ‘1121A’ Card Cage Assy (A18) 6-43...

  • Page 134: Figure 6-21. Pwa '1121A' Mother (A10)

    Section 6 Parts List Figure 6-21. PWA ‘1121A’ Mother (A10) 6-44...
  • Page 135 Parts List Section 6 11220600A REV A PWA MOTHER/POWER SUPPLY 1121A (A10) (Figure 6-22) MODEL: 1121A REF. CAGE MFG PART BEC PART DESIG. DESCRIPTION CODE NUMBER NUMBER C1-2 CAP CER CHIP 0.1uF 20% 50V 1206 31433 C1206C104M5UACTU 22452100A C3-4 CAP CER CHIP 0.01uF 10% 50V 0805...
  • Page 136 Section 6 Parts List RES CHIP 2.21K 1% 1/4W 1206 4S177 RCI-0805-2211F 31933300A R3A-E, R4A-H RES CHIP 332 OHMS 1% 1/8W 0805 4S177 RCI-0805-3320-F 31825000A RES CHIP 475 OHM 1% 1/4W 1206 4S177 RCI-1206-4750F 33726500A RES VAR CHIP 1K 10% 0.5W CERMET SM 32997 3314J-1-102 32300300A...

  • Page 137: Figure 6-22. Pwa 400 Hz High Pass Filter

    Parts List Section 6 Figure 6-22. PWA 400 Hz High Pass Filter 6-47...
  • Page 138 Section 6 Parts List 6-48...

  • Page 139: Section Vii - Schematic Diagrams

    Schematic Diagrams Section 7 SECTION VII SCHEMATIC DIAGRAMS TABLE 7-1. LIST OF SCHEMATICS.
  • Page 140 Section 7 Schematic Diagrams This page intentionally blank.

  • Page 141: Figure 7-1. Main Frame Schematic

    Schematic Diagrams Section 7 Figure 7-1. Main Frame Schematic...

  • Page 142: Figure 7-2. Input Board A0 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-2. Input Board A0 Parts Location Diagram...

  • Page 143: Figure 7-3. Input Board A0 Schematic

    Schematic Diagrams Section 7 Figure 7-3. Input Board A0 Schematic...

  • Page 144: Figure 7-4. Filter Board A1 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-4. Filter Board A1 Parts Location Diagram...

  • Page 145: Figure 7-5. Filter Board A1 Schematic

    Schematic Diagrams Section 7 Figure 7-5. Filter Board A1 Schematic...

  • Page 146: Figure 7-6. Notch Board A2 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-6. Notch Board A2 Parts Location Diagram.

  • Page 147: Figure 7-7. Notch Board A2.1Schematic

    Schematic Diagrams Section 7 Figure 7-7. Notch Board A2.1Schematic...
  • Page 148 Section 7 Schematic Diagrams This page intentionally blank. 7-10...

  • Page 149: Figure 7-8. Notch Board A2.2 Schematic

    Schematic Diagrams Section 7 Figure 7-8. Notch Board A2.2 Schematic 7-11...

  • Page 150: Figure 7-9. Detector Board A3 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-9. Detector Board A3 Parts Location Diagram. 7-12...

  • Page 151: Figure 7-10. Detector Board A3.1 Schematic

    Schematic Diagrams Section 7 Figure 7-10. Detector Board A3.1 Schematic Figure 7-11. Detector Board A3.2 Schematic. 7-13...

  • Page 152: Figure 7-12. Counter Board A4 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-12. Counter Board A4 Parts Location Diagram. 7-14...

  • Page 153: Figure 7-13. Counter Board A4 Schematic

    Schematic Diagrams Section 7 Figure 7-13. Counter Board A4 Schematic. 7-15...

  • Page 154: Figure 7-14. C.p.u. Board A5 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-14. C.P.U. Board A5 Parts Location Diagram. 7-16...

  • Page 155: Figure 7-15. C.p.u. Board A5 Schematic

    Schematic Diagrams Section 7 Figure 7-15. C.P.U. Board A5 Schematic. 7-17...

  • Page 156: Figure 7-16. Source Board A6 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-16. Source Board A6 Parts Location Diagram. 7-18...

  • Page 157: Figure 7-17. Source Board A6.1 Schematic

    Schematic Diagrams Section 7 Figure 7-17. Source Board A6.1 Schematic. 7-19...
  • Page 158 Section 7 Schematic Diagrams This page intentionally blank. 7-20...

  • Page 159: Figure 7-18. Source Board A6.2 Schematic

    Schematic Diagrams Section 7 Figure 7-18. Source Board A6.2 Schematic. 7-21...

  • Page 160: Figure 7-19. Output Board A7 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-19. Output Board A7 Parts Location Diagram. 7-22...

  • Page 161: Figure 7-20. Output Board A7 Schematic

    Schematic Diagrams Section 7 Figure 7-20. Output Board A7 Schematic. 7-23...

  • Page 162: Figure 7-21. Mother Board A10 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-21. Mother Board A10 Parts Location Diagram. 7-24...

  • Page 163: Figure 7-22. Mother Board A10 Schematic

    Schematic Diagrams Section 7 Figure 7-22. Mother Board A10 Schematic. 7-25...
  • Page 164 Section 7 Schematic Diagrams This page intentionally blank. 7-26...

  • Page 165: Figure 7-25. Power Supply A11.2 Schematic

    Schematic Diagrams Section 7 Figure 7-25. Power Supply A11.2 Schematic. 7-27...
  • Page 166 Section 7 Schematic Diagrams This page intentionally blank. 7-28...
  • Page 167 Schematic Diagrams Section 7 7-29...

  • Page 168: Figure 7-26. Display Board A12 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-26. Display Board A12 Parts Location Diagram. 7-30...

  • Page 169: Figure 7-27. Display Board A12 Schematic Sheet 1

    Schematic Diagrams Section 7 Figure 7-27. Display Board A12 Schematic Sheet 1. 7-31...

  • Page 170: Figure 7-28. Key Board A13 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-28. Key Board A13 Parts Location Diagram. 7-32...
  • Page 171 Schematic Diagrams Section 7 7-33...
  • Page 172 Section 7 Schematic Diagrams 7-34...
  • Page 173 Schematic Diagrams Section 7 7-35...
  • Page 174 Section 7 Schematic Diagrams This page intentionally blank. 7-36...

  • Page 175: Figure 7-32. 400 Hz Board A1A30 Parts Location Diagram

    Schematic Diagrams Section 7 Figure 7-32. 400 Hz Board A1A30 Parts Location Diagram. Figure 7-33. 400 Hz Board A1A30 Schematic. 7-37...

  • Page 176: Figure 7-35. Ccitt Board A1A31 Schematic

    Section 7 Schematic Diagrams Figure 7-35. CCITT Board A1A31 Schematic. 7-38...

  • Page 177: Figure 7-36. Ccir Board A1A32,A33 Parts Location Diagram

    Schematic Diagrams Section 7 Figure 7-36. CCIR Board A1A32,A33 Parts Location Diagram. Figure 7-37. CCIR Board A1A32,A33 Schematic. 7-39...

  • Page 178: Figure 7-38. A,B,C Wtng Board A1A34,35,36 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-38. A,B,C WTNG Board A1A34,35,36 Parts Location Diagram. Figure 7-39. A,B,C WTNG Board A1A34,35,36 Schematic. 7-40...

  • Page 179: Figure 7-40. Audio Board A1A37 Parts Location Diagram

    Schematic Diagrams Section 7 Figure 7-40. AUDIO Board A1A37 Parts Location Diagram. Figure 7-41. AUDIO Board A1A37 Schematic. 7-41...

  • Page 180: Figure 7-42. C-Message Board A1A38 Parts Location Diagram

    Section 7 Schematic Diagrams Figure 7-42. C-MESSAGE Board A1A38 Parts Location Diagram. Figure 7-43. C-MESSAGE Board A1A38 Schematic. 7-42...
  • Page 181 Section 7 WARRANTY Boonton Electronics warrants its products to the original Purchaser to be free from defects in material and workmanship for a period of one year from date of shipment for instrument, and for one year from date of shipment for probes, power sensors and accessories.

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