Agilent Technologies 33500 Series Service Manual
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Agilent Technologies 33500 Series Service Manual

Agilent Technologies 33500 Series Service Manual

30 mhz function / arbitrary waveform generator
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Agilent 33500 Series 
30 MHz Function /
Arbitrary Waveform
Generator
Service Guide
Agilent Technologies

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Summary of Contents for Agilent Technologies 33500 Series

  • Page 1 Agilent 33500 Series  30 MHz Function / Arbitrary Waveform Generator Service Guide Agilent Technologies...
  • Page 2 This product utilizes Microsoft Windows CE. Agilent highly recommends that all Windows-based computers connected to The hardware and/or software © Agilent Technologies, Inc. 2010 Windows CE instruments utilize current described in this document are fur- anti-virus software. For more information,...
  • Page 3 Agilent Technologies assumes no liability of the customer’s Do Not Operate in an failure to comply with the require- Explosive Atmosphere ments.
  • Page 4 If you have questions about your shipment, or if you need information about warranty, Frame or chassis service, or technical support, terminal contact Agilent Technologies: Standby supply. Unit is not completely disconnected In the United States: (800) 829- from AC mains when 4444...

  • Page 5: 30 Mhz Function / Arbitrary Waveform Generator

    Service Guide Publication Number 33520-90010 (order as 33520-90000 manual set) Edition 2, September 2010 Copyright © 2010 Agilent Technologies, Inc. Agilent 33500 Series 30 MHz Function / Arbitrary Waveform Generator...

  • Page 6: Agilent 33500 Series At A Glance

    Agilent 33500 Series at a Glance The Agilent Technologies 33500 Series is a 30 MHz synthesized waveform generator with built-in arbitrary waveform and pulse capabilities. Its combination of bench-top and system features makes this waveform generator a versatile solution for your testing requirements now and in the future.

  • Page 7: The Front Panel At A Glance

    The Front Panel at a Glance 1 USB Port 9 System Key 2 On/Off Switch 10 Numeric Keypad 3 Channel 1 Summary Tab 11 Knob 4 Channel 2 Summary Tab 12 Cursor Keys (Arrows) 5 Waveform and Parameter Display Area 13 Manual Trigger (Sweep and Burst only) 6 Menu Operation Softkeys 14 Sync Connector...

  • Page 8: The Front-Panel Display At A Glance

    The Front-Panel Display at a Glance Channel 2 Channel 1 Information Information Waveform Waveform Display Parameters Sweep or Burst Parameters Softkey Labels...

  • Page 9: Front-Panel Number Entry

    Front-Panel Number Entry You can enter numbers from the front-panel using one of two methods. Use the knob and cursor keys to modify the displayed number. 1. Use the keys below the knob to move the cursor left or right. 2.

  • Page 10: The Rear Panel At A Glance

    The Rear Panel at a Glance 1 External 10 MHz Reference Input Terminal 2 Internal 10 MHz Reference Output Terminal 3 GPIB Interface Connector (option 400) 4 Chassis Ground 5 External Modulation Input Terminal 6 Input: External Trig/Gate/FSK/Burst 7 USB Interface Connector 8 Local Area Network (LAN) Connector 9 Instrument Cable Lock 10 AC Power...

  • Page 11: In This Book

    Agilent Technologies for servicing, troubleshooting procedures and replaceable parts lists for servicing it yourself, and disassembly procedures. You can contact Agilent Technologies at one of the following telephone numbers for warranty, service, or technical support information. In the United States: (800) 829-4444...

  • Page 13: Table Of Contents

    Chapter 1 Agilent 33500 Series 30 MHz Function / Arbitrary Waveform Generator 5 Agilent 33500 Series at a Glance 6 The Front Panel at a Glance 7 The Front-Panel Display at a Glance 8 Front-Panel Number Entry 9 The Rear Panel at a Glance 10...
  • Page 14 Chapter 5 Calibration and Adjustment 85 Calibration and Adjustment 86 Agilent Technologies Calibration Services 87 Calibration Interval 87 Adjustment is Recommended 87 Time Required for Calibration 88 Automating Calibration Procedures 89 Recommended Test Equipment 90 Test Considerations 91 Performance Verification Tests 92...
  • Page 15 Chapter 7 Service and Repair 139 Service and Repair 140 Operating Checklist 140 Types of Service Available 141 Repackaging for Shipment 142 Cleaning 142 Electrostatic Discharge (ESD) Precautions 143 Surface Mount Repair 143 Troubleshooting 144 Self-Test Procedures 150 Replaceable Parts 156 Disassembly 157...

  • Page 17: Chapter 2 Specifications

    Specifications...
  • Page 18 Chapter 1 Specifications Agilent 33500 Series Function / Arbitrary Waveform Generator The characteristics and specifications shown below RAMP and TRIANGLE are a subset of the full specifications for the 33500 1 Hz to 200 kHz, 1 Hz Frequency Series waveform generators. For the complete set...
  • Page 19 Chapter 1 Specifications Agilent 33500 Series Function / Arbitrary Waveform Generator OUTPUT CHARACTERISTICS ISOLATION Outputs Connector shells for Ch 1, Ch2 , Sync, and Mod In are connected together but isolated from the instrument's chassis. Maximum allowable voltage on isolated connector shells is ±42 Vpk.
  • Page 20 Chapter 1 Specifications Agilent 33500 Series Function / Arbitrary Waveform Generator MODULATION TYPES AND OPERATING MODES CARRIER BPSK Burst Sweep SINE and SQUARE • • • • • • • • PULSE • • • • • • • •...
  • Page 21 Chapter 1 Specifications Agilent 33500 Series Function / Arbitrary Waveform Generator MODULATION CHARACTERISTICS SWEEP AMPLITUDE MODULATION (AM) Type Linear, Logarithmic, List (up to 128 user-defined frequencies) Source Internal or External, or either channel with 33522A Operation Linear and Logarithmic sweeps are...
  • Page 22 Chapter 1 Specifications Agilent 33500 Series Function / Arbitrary Waveform Generator SYNC / MARKER OUTPUT FREQUENCY REFERENCE OUTPUT Connector Front-panel BNC, isolated from Connector Rear-panel BNC, chassis- chassis referenced Functions Sync, Sweep Marker, Burst Output 50 Ω, AC-coupled Marker, or Arbitrary Waveform...
  • Page 23 Chapter 1 Specifications Agilent 33500 Series Function / Arbitrary Waveform Generator MEMORY ENVIRONMENTAL ARBITRARY WAVEFORM MEMORY Storage -40˚ C to 70˚C Temperature Volatile 1M samples / ch 512 Sequence steps / ch Warm-Up Time 1 hour Optional 16M point / ch Operating EN61010, Pollution Degree 2;...
  • Page 24 Chapter 1 Specifications Agilent 33500 Series Function / Arbitrary Waveform Generator Product Dimensions All dimensions are shown in millimeters.

  • Page 25: Chapter 3 Quick Start

    Quick Start...

  • Page 26: Quick Start

    Quick Start One of the first things you will want to do with your waveform generator is to become acquainted with the front panel. We have written the exercises in this chapter to prepare the instrument for use and help you get familiar with some of its front-panel operations.

  • Page 27: To Prepare The Waveform Generator For Use

    • Agilent Automation-Ready CD (Agilent IO Libraries Suite). • USB 2.0 cable. Note: All of the 33500 Series product documentation is provided on the Agilent 33500 Series Product Reference CD that comes with the product, and is also available on the Web at www.agilent.com/find/33521A and www.agilent.com/find/33522A.
  • Page 28 Chapter 2 Quick Start To Prepare the Waveform Generator for Use To turn off the instrument, you must hold the power switch down for about 500 ms. This prevents you from accidentally turning off the instrument by brushing against the power switch. If the power-on self test fails, the instrument shows the ERR annunciator in the upper right corner of the display.

  • Page 29: To Adjust The Carrying Handle

    Chapter 2 Quick Start To Adjust the Carrying Handle To Adjust the Carrying Handle To adjust the position, grasp the handle by the sides and pull outward. Then, rotate the handle to the desired position. Retracted Carrying Position Extended...

  • Page 30: To Set The Output Frequency

    Chapter 2 Quick Start To Set the Output Frequency To Set the Output Frequency At power-on, the waveform is configured for a sine wave at 1 kHz with an amplitude of 100 mV peak-to-peak (into a 50 termination). The following steps show you how to change the frequency to 1.2 MHz. 1 Press the button, followed by the Frequency softkey.
  • Page 31 Chapter 2 Quick Start To Set the Output Frequency 3 Select the desired units. Press the softkey that corresponds to the desired units. When you select the units, the waveform generator outputs a waveform with the displayed frequency (if the output is enabled). For this example, press MHz.

  • Page 32: To Set The Output Amplitude

    Chapter 2 Quick Start To Set the Output Amplitude To Set the Output Amplitude At power-on, the waveform generator is configured for a sine wave with an amplitude of 100 mV peak-to-peak (into a 50 termination). The following steps show you how to change the amplitude to 50 mVpp. 1 Press , then the softkey marked Amp/Offs or High/Low to make sure that you are in Amp/Offs.
  • Page 33 Chapter 2 Quick Start To Set the Output Amplitude 2 Enter the magnitude of the desired amplitude. Press and then press Amplitude. Using the numeric keypad, enter the number 50. 3 Select the desired units. Press the softkey that corresponds to the desired units. When you select the units, the waveform generator outputs the waveform with the displayed amplitude (if the output is enabled).
  • Page 34 Chapter 2 Quick Start To Set the Output Amplitude You can easily convert the displayed amplitude from one unit to another. Simply press , and then press the Ampl As softkey and select the desired units.

  • Page 35: To Set A Dc Offset Voltage

    Chapter 2 Quick Start To Set a DC Offset Voltage To Set a DC Offset Voltage At power-on, the waveform generator outputs a sine wave with a DC offset of 0 volts (into a 50 termination). The following steps show you how to change the offset to –1.5 VDC.
  • Page 36 Chapter 2 Quick Start To Set a DC Offset Voltage 3 Select the desired units. Press the softkey for the desired units. When you select the units, the waveform generator outputs the waveform with the displayed offset (if the output is enabled). For this example, press V. The voltage will be set as shown below.

  • Page 37: To Set The High-Level And Low-Level Values

    Chapter 2 Quick Start To Set the High-Level and Low-Level Values To Set the High-Level and Low-Level Values You can specify a signal by setting its amplitude and DC offset values, as described previously. Another way to set the signal limits is to specify its high (maximum) and low (minimum) values.
  • Page 38 Chapter 2 Quick Start To Set the High-Level and Low-Level Values 3 Set the “High Level” value. Press the key and select High Level. Using the numeric keypad or knob and arrows, select a value of 1.0 V. (If you are using the keypad, you will need to select the V unit softkey to enter the value.) 4 Press the Low Level softkey and set the value.

  • Page 39: To Output A Dc Voltage

    Chapter 2 Quick Start To Output a DC Voltage To Output a DC Voltage You can specify a constant DC voltage to be output 1 Press and then select More and DC. The Offset value becomes selected. 2 Enter the desired voltage level as an Offset. Enter 1.0 with the numeric keypad or knob and then press the V softkey if you used the keypad.

  • Page 40: To Set The Duty Cycle Of A Square Wave

    Chapter 2 Quick Start To Set the Duty Cycle of a Square Wave To Set the Duty Cycle of a Square Wave At power-on, the duty cycle for square waves is 50%. The duty cycle is limited by the minimum pulse width specification of 16 ns. The following steps show you how to change the duty cycle to 75%.
  • Page 41 Chapter 2 Quick Start To Set the Duty Cycle of a Square Wave 3 Enter the desired duty cycle. Using the numeric keypad or the knob and arrows, select a duty cycle value of “75”. If you are using the numeric keypad, press the Percent softkey to finish the entry.

  • Page 42: To Configure A Pulse Waveform

    Chapter 2 Quick Start To Configure a Pulse Waveform To Configure a Pulse Waveform You can configure the waveform generator to output a pulse waveform with variable pulse width and edge time. The following steps show you how to configure a 500 ms periodic pulse waveform with a pulse width of 10 ms and edge times of 50 ns.
  • Page 43 Chapter 2 Quick Start To Configure a Pulse Waveform 3 Set the pulse width. Press and the Pulse Width softkey, and then set the pulse width to 10 ms. The pulse width represents the time from the 50% threshold of the rising edge to the 50% threshold of the next falling edge.

  • Page 44: To Select A Stored Arbitrary Waveform

    The following steps show you how to select the built-in “exponential fall” waveform from the front panel. For information on creating a custom arbitrary waveform, refer to the Agilent 33500 Series User’s Guide. 1 Select the arbitrary waveform function. Press the button and choose the Arb and Arbs softkeys.

  • Page 45: To Use The Built-In Help System

    Chapter 2 Quick Start To Use the Built-In Help System To Use the Built-In Help System The built-in help system is designed to provide context-sensitive assistance on any front-panel key or menu softkey. A list of help topics is also available to assist you with several front-panel operations. 1 View the help information for a function key.
  • Page 46 Chapter 2 Quick Start To Use the Built-In Help System 2 View the list of help topics. Press the button and then press Help to view the list of available help topics. To scroll through the list, press the  andsoftkeys. Select the topic Get HELP on any key and then press Select.
  • Page 47 Chapter 2 Quick Start To Use the Built-In Help System 3 View the help information for displayed messages. Whenever a limit is exceeded or any other invalid configuration is found, the waveform generator will display a message. The built-in help system provides additional information on the most recent message.

  • Page 48: To Rack Mount The Waveform Generator

    Instructions and mounting hardware are included with each rack-mounting kit. Any Agilent System II instrument of the same size can be rack-mounted beside the Agilent 33500 Series. Note: Remove the carrying handle, and the front and rear rubber bumpers, before rack-mounting the instrument.
  • Page 49 Chapter 2 Quick Start To Rack Mount the Waveform Generator To rack mount a single instrument, order adapter kit 5063-9240. To rack mount two instruments side-by-side, order lock-link kit 5061- 8769 and flange kit 5063-9212. Be sure to use the support rails in the rack cabinet. In order to prevent overheating, do not block the flow of air into or out of the instrument.
  • Page 50 Chapter 2 Quick Start To Rack Mount the Waveform Generator...

  • Page 51: Chapter 4 Front-Panel Menu Operation

    Front-Panel Menu Operation...

  • Page 52: Front-Panel Menu Operation

    Front-Panel Menu Operation This chapter introduces you to the front-panel keys and menu operation. This chapter does not give a detailed description of every front-panel key or menu operation. It does, however, give you an overview of the front- panel menus and many front-panel operations. Refer to the Agilent 33500A Series User’s Guide for a complete discussion of the waveform generator’s capabilities and operation.

  • Page 53: Front-Panel Menu Reference

    Chapter 3 Front-Panel Menu Operation Front-Panel Menu Reference Front-Panel Menu Reference This section gives an overview of the front-panel menus. The remainder of this chapter contains examples of using the front-panel menus. Select a waveform • Select one of nine waveform types, including Sine, Square, Ramp, Pulse, Arbitrary, Triangle, Noise, PRBS, and DC.
  • Page 54 Chapter 3 Front-Panel Menu Operation Front-Panel Menu Reference Configure the parameters for modulation. • Turn modulation on or off. • Specify the modulation type. • Specify the modulation source. • Specify parameters for AM, FM, PM, PWM, BPSK, FSK and SUM modulation. Configure the parameters for frequency sweep.
  • Page 55 Calibrate - Perform calibration tasks. • Lock and unlock the instrument for calibration. • Set the calibration password. • Calibrate the instrument (see Agilent 33500 Series Service Guide). Instr Setup - Configure instrument parameters. • Perform self-test. • Configure reference oscillator.
  • Page 56 Chapter 3 Front-Panel Menu Operation Front-Panel Menu Reference Channels - Enable and configure channels. • Turn channel on and off • Select the output termination (1 to 10 k, or Infinite). • Enable/disable amplitude autoranging. • Select the waveform polarity (normal or inverted). •...

  • Page 57: To Select The Output Termination

    To Select the Output Termination To Select the Output Termination The Agilent 33500 Series has a fixed series output impedance of 50 ohms to the front-panel channel connectors. If the actual load impedance is different than the value specified, the displayed amplitude and offset levels will be incorrect.

  • Page 58: To Reset The Waveform Generator

    To Reset the Waveform Generator To reset the instrument to its factory default state, press and then select the Store/Recall and Set to Defaults softkeys. For a complete listing of the instrument’s power-on and reset conditions, reefer to the Agilent 33500 Series User’s Guide.

  • Page 59: To Output A Modulated Waveform

    Chapter 3 Front-Panel Menu Operation To Output a Modulated Waveform To Output a Modulated Waveform A modulated waveform consists of a carrier and a modulating waveform. In AM (amplitude modulation), the amplitude of the carrier is varied by the amplitude of the modulating waveform. For this example, you will output an AM waveform with 80% modulation depth.
  • Page 60 Chapter 3 Front-Panel Menu Operation To Output a Modulated Waveform 4 Select the modulating waveform shape. Press the Shape softkey to select the shape of the modulating waveform. For this example, select a sine wave. 5 Set the modulating frequency. Press More and then the AM Freq softkey.

  • Page 61: To Output An Fsk Waveform

    Chapter 3 Front-Panel Menu Operation To Output an FSK Waveform To Output an FSK Waveform You can configure the waveform generator to “shift” its output frequency between two preset values using FSK modulation. The rate at which the output shifts between the two frequencies (called the “carrier frequency” and the “hop frequency”) is determined by the internal rate generator or the signal level on the rear-panel Trig In connector.
  • Page 62 Chapter 3 Front-Panel Menu Operation To Output an FSK Waveform 3 Set the “hop” frequency. Press the Hop Freq softkey and then set the value to 500 Hz using the numeric keypad or the knob and cursor keys. If you use the numeric keypad, be sure to finish the entry by pressing the Hz softkey.

  • Page 63: To Output A Pwm Waveform

    To Output a PWM Waveform You can configure the waveform generator to output a pulse width modulated (PWM) waveform. The Agilent 33500 Series provides PWM for pulse carrier waveforms. In PWM, the pulse width or duty cycle of the carrier waveform is varied according to the modulating waveform. You...
  • Page 64 Chapter 3 Front-Panel Menu Operation To Output a PWM Waveform 2 Select PWM. Press and choose Type, then PWM. Then press the first softkey (Modulate) to turn modulation on. Notice the status message “PWM Modulated by Sine” in the upper-left corner of the display. 3 Set the width deviation.
  • Page 65 Chapter 3 Front-Panel Menu Operation To Output a PWM Waveform 4 Set the modulating frequency. Press the PWM Freq softkey and then set the value to 5 Hz using the numeric keypad or the knob and cursor keys. 5 Select the modulating waveform shape. Press the Shape softkey to select the shape of the modulating waveform.

  • Page 66: To Output A Frequency Sweep

    Chapter 3 Front-Panel Menu Operation To Output a Frequency Sweep To Output a Frequency Sweep In the frequency sweep mode, the waveform generator moves from the start frequency to the stop frequency at a sweep rate which you specify. You can sweep up or down in frequency, and with either linear or logarithmic spacing, or using a list of frequencies.
  • Page 67 Chapter 3 Front-Panel Menu Operation To Output a Frequency Sweep 2 Select the sweep mode. Press and then verify that the linear sweep mode is currently selected on the second softkey. Press the Sweep softkey to turn sweep on. Notice the “Linear Sweep” status message at the top of the tab for the current channel.
  • Page 68 Chapter 3 Front-Panel Menu Operation To Output a Frequency Sweep Note: If desired, you can press the button and then press the fourth softkey choose to set the frequency boundaries of the sweep using a center frequency and frequency span. These parameters are similar to the start frequency and stop frequency and are included to give you added flexibility.

  • Page 69: To Output A Burst Waveform

    Chapter 3 Front-Panel Menu Operation To Output a Burst Waveform To Output a Burst Waveform You can use the waveform generator to output a waveform with a specified number of cycles, called a burst. You can control the burst rate with the internal rate generator or the signal level on the rear-panel Trig In connector.
  • Page 70 Chapter 3 Front-Panel Menu Operation To Output a Burst Waveform 2 Select the burst mode. Press and then press the Burst Off / On softkey. Notice that a status message “N Cycle Burst, Trig Imm” is shown in the tab of the current channel.
  • Page 71 Chapter 3 Front-Panel Menu Operation To Output a Burst Waveform 4 Set the burst period. Press the Burst Period softkey and then set the period to 20 ms using the numeric keypad or the knob and cursor keys. The burst period sets the time from the start of one burst to the start of the next burst (note the display icon).

  • Page 72: To Trigger A Sweep Or Burst

    Chapter 3 Front-Panel Menu Operation To Trigger a Sweep or Burst To Trigger a Sweep or Burst You can issue triggers from the front panel for sweeps and bursts using one of four different trigger types. • Immediate or “automatic” triggering is the default setting. In this mode, the waveform generator outputs continuously when the sweep or burst mode is selected.

  • Page 73: To Store The Instrument State

    Chapter 3 Front-Panel Menu Operation To Store the Instrument State To Store the Instrument State You can store instrument states in any number of state files, which always have a .STA extension. You can do this for backup purposes, or you can save your state to a USB drive and then reload the state on a different instrument.
  • Page 74 Chapter 3 Front-Panel Menu Operation To Store the Instrument State • Standard file naming rules apply to state files. • To add characters, press the right-cursor key until the cursor is to the right of the existing name and then turn the knob. •...

  • Page 75: To Configure The Remote Interface

    Note: Two CDs, provided with your instrument, contain connectivity software to enable communications over the remote interfaces. See the Agilent 33500 Series User’s Guide for further information on these CDs and the software they contain. GPIB Configuration (Option GPIB) You need only select a GPIB address.
  • Page 76 Enter when done. USB Configuration The USB interface requires no front panel configuration parameters. Just connect the Agilent 33500 Series to your PC with the appropriate USB cable. The interface will configure itself. The instrument supports both USB 1.1 and USB 2.0.
  • Page 77 Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface LAN Configuration There are several parameters that you may need to set to establish network communication using the LAN interface. Primarily, you will need to establish an IP address. You may need to contact your network administrator for help in establishing communication with the LAN interface.
  • Page 78 Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface 2 Select the LAN Settings menu. Press the LAN Settings softkey. You can select Modify Settings to change the LAN settings, or you can turn LAN Services on and off or restore the LAN settings to default values.
  • Page 79 Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface 3 Press Modify Settings. To access most items on this screen, you must use the first softkey to switch from DHCP to Manual. With DHCP on, an IP address will automatically be set by DHCP (Dynamic Host Configuration Protocol) when you connect the instrument to the network, provided the DHCP server is found and is able to do so.
  • Page 80 Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface 4 Establish an “IP Setup.” If you are not using DHCP, you must first establish an IP setup, including an IP address, and possibly a subnet mask and gateway address. The IP Address and Subnet Mask buttons are on the main screen, and you press the More softkey button to get to the Gateway configuration feature.
  • Page 81 Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface 5 Configure the “DNS Setup” (optional). DNS (Domain Name Service) is an Internet service that translates domain names into IP addresses. Ask your network administrator whether DNS is in use, and if it is, for the host name, domain name, and DNS server address to use.
  • Page 82 (0 to 255), with no leading zeros. The Agilent 33500 Series assumes that all IP addresses and other dot- notation addresses are expressed as decimal byte values, and strips all leading zeros from these byte values.

  • Page 83: To Secure And Unsecure The Instrument For Calibration

    Chapter 3 Front-Panel Menu Operation To Secure and Unsecure the Instrument for Calibration To Secure and Unsecure the Instrument for Calibration The instrument uses a security code to prevent accidental or unauthorized adjustments of the instrument. When you first receive your instrument, it is secured.
  • Page 84 Chapter 3 Front-Panel Menu Operation To Secure and Unsecure the Instrument for Calibration...

  • Page 85: Chapter 5 Calibration And Adjustment

    Calibration and Adjustment...

  • Page 86: Calibration And Adjustment

    This chapter contains procedures for verification of the instrument's performance and adjustment (calibration). The chapter is divided into the following sections: • Agilent Technologies Calibration Services, on page 87 • Calibration Interval, on page 87 • Adjustment is Recommended, on page 87 •...

  • Page 87: Agilent Technologies Calibration Services

    Agilent Technologies Calibration Services When your instrument is due for calibration, contact your local Agilent Technologies Service Center for a low-cost recalibration. The waveform generator is supported on automated calibration systems which allow Agilent to provide this service at competitive prices.

  • Page 88: Time Required For Calibration

    Chapter 4 Calibration and Adjustment Time Required for Calibration Time Required for Calibration The waveform generator can be automatically calibrated under computer control. With computer control you can perform the complete calibration procedure and performance verification tests in approximately 30 minutes (33521A) or 60 minutes (33522A) once the instrument is warmed-up (see “Test Considerations”...

  • Page 89: Automating Calibration Procedures

    6. CAL:SETup 3 // puts the instrument in calibration setup 3 For further information on programming the instrument, see chapters 2, 3, and 4 in the Agilent 33500 waveform generator User’s Guide and the Agilent 33500 Series Programmer’s Reference CD.

  • Page 90: Recommended Test Equipment

    Chapter 4 Calibration and Adjustment Recommended Test Equipment Recommended Test Equipment The test equipment recommended for the performance verification and adjustment procedures is listed below. If the exact instrument is not available, substitute calibration standards of equivalent accuracy. Instrument Requirements Recommended Model Use* Digital Multimeter...

  • Page 91: Test Considerations

    Chapter 4 Calibration and Adjustment Test Considerations Test Considerations For optimum performance, all procedures should comply with the following recommendations: • Assure that the calibration ambient temperature is stable and between 18 °C and 28 °C. Ideally, the calibration should be performed at 23 °C 1 °C.

  • Page 92: Performance Verification Tests

    Chapter 4 Calibration and Adjustment Performance Verification Tests Performance Verification Tests Use the Performance Verification Tests to verify the measurement performance of the instrument. The performance verification tests use the instrument’s specifications listed in the “Specifications” chapter beginning on page 17. You can perform three different levels of performance verification tests: •...
  • Page 93 Chapter 4 Calibration and Adjustment Performance Verification Tests Self-Test A brief power-on self-test occurs automatically whenever you turn on the instrument. This limited test assures that the instrument is operational. To perform a complete self-test: 1 Press System Key on the front panel. 2 Select the Self Test softkey from the “Utility >...
  • Page 94 Chapter 4 Calibration and Adjustment Performance Verification Tests Quick Performance Check The quick performance check is a combination of internal self-test and an abbreviated performance test (specified by the letter Q in the performance verification tests). This test provides a simple method to achieve high confidence in the instrument's ability to functionally operate and meet specifications.
  • Page 95 Chapter 4 Calibration and Adjustment Performance Verification Tests Amplitude and Flatness Verification Procedures The flatness verification procedures use a precision AC Voltmeter. You may substitute Thermal Voltage Converters (TVCs) to make measurements using appropriate operating procedures and test equipment. Flatness measurements for the -24 dB and -8 dB attenuator ranges are measured during the verification procedure.

  • Page 96: Internal Timebase Verification

    Chapter 4 Calibration and Adjustment Internal Timebase Verification Internal Timebase Verification This test verifies the output frequency accuracy of the instrument. All output frequencies are derived from a single generated frequency. 1 Connect a frequency counter to the channel 1 output as shown below (the frequency counter input should be terminated at 50 ).

  • Page 97: Ac Amplitude (High-Impedance) Verification

    Chapter 4 Calibration and Adjustment AC Amplitude (high-impedance) Verification AC Amplitude (high-impedance) Verification This procedure checks the ac amplitude output accuracy at a frequency of 1 kHz using each attenuator. 1 Set the DMM to measure Vrms. Connect the DMM to the channel 1 output as shown below.

  • Page 98: Dc Offset Voltage Verification

    Chapter 4 Calibration and Adjustment DC Offset Voltage Verification DC Offset Voltage Verification This procedure checks the DC Offset Voltage on two attenuator ranges, 1 Set the DMM to measure DC Volts. Connect the DMM to the Channel 1 Output as shown below. 2 Set the instrument to each output described in the table below and measure the output voltage with the DMM.

  • Page 99: Db Range Flatness Verification

    Chapter 4 Calibration and Adjustment -8 dB Range Flatness Verification -8 dB Range Flatness Verification This procedure checks the high frequency ac amplitude flatness on the -8dB attenuator range. This also checks flatness for all other ranges excluding the -24 dB and 0 dB attenuator ranges. 1 Connect a precision AC Voltmeter to measure the output amplitude of channel 1 as shown below.
  • Page 100 Chapter 4 Calibration and Adjustment -8 dB Range Flatness Verification 3 Set the instrument to each output described in the table below and measure the output amplitude with the AC Voltmeter. This will become the reference measurement. Set the output impedance to 50 . Be sure the output is enabled.

  • Page 101: Db Range Flatness Verification

    Chapter 4 Calibration and Adjustment -24 dB Range Flatness Verification 6 Compare the measured output to the test limits shown in the table. 7 33522A Only. Connect the AC Voltmeter to the channel 2 output and repeat steps 2 through 6. -24 dB Range Flatness Verification This procedure checks the high frequency ac amplitude flatness on the - 24 dB attenuator range.
  • Page 102 Chapter 4 Calibration and Adjustment -24 dB Range Flatness Verification 3 Set the instrument to each output described in the table below and measure the output amplitude with the AC Voltmeter. This will become the reference measurement. Set the output impedance to 50 . Be sure the output is enabled.

  • Page 103: Calibration Security

    Chapter 4 Calibration and Adjustment Calibration Security 6 Compare the measured output to the test limits shown in the table. 7 33522A Only. Connect the AC Voltmeter to the channel 2 output and repeat steps 2 through 6. Calibration Security This feature allows you to enter a security code to prevent accidental or unauthorized adjustments of the instrument.
  • Page 104 Chapter 4 Calibration and Adjustment Calibration Security To Unsecure the Instrument Without the Security Code To unsecure the instrument without the correct security code, follow the steps below. See “Electrostatic Discharge (ESD) Precautions” on page 143 before beginning this procedure. 1 Disconnect the power cord and all input connections.
  • Page 105 Chapter 4 Calibration and Adjustment Calibration Security 5 The display will show the message “Calibration security has been disabled”. The instrument is now unsecured. As a result of this procedure: • Calibration security will be unlocked • Calibration Password will be reset to "AT33520A" •...

  • Page 106: Calibration Message

    Chapter 4 Calibration and Adjustment Calibration Message Calibration Message The instrument allows you to store one message in calibration memory. For example, you can store the date when the last calibration was performed, the date when the next calibration is due, the instrument's serial number, or even the name and phone number of the person to contact for a new calibration.

  • Page 107: General Calibration/Adjustment Procedure

    Chapter 4 Calibration and Adjustment General Calibration/Adjustment Procedure General Calibration/Adjustment Procedure The following procedure is the recommended method to complete an instrument calibration. This procedure is an overview of the steps required for a complete calibration. Additional details for each step in this procedure are given in the appropriate sections of this chapter.

  • Page 108: Aborting A Calibration In Progress

    Chapter 4 Calibration and Adjustment Aborting a Calibration in Progress Aborting a Calibration in Progress Sometimes it may be necessary to abort a calibration after the procedure has already been initiated. You can abort a calibration at any time by turning off the power.

  • Page 109: Self-Test

    Chapter 4 Calibration and Adjustment Self-Test Self-Test Self-Test is performed as the first step to ensure the instrument is in working order before beginning any additional adjustments. Note Be sure to follow the requirements listed in “Test Considerations” on page 91 before beginning any adjustments. 1 Press and then press the Calibrate softkey.

  • Page 110: Frequency (Internal Timebase) Adjustment

    Chapter 4 Calibration and Adjustment Frequency (Internal Timebase) Adjustment Frequency (Internal Timebase) Adjustment The waveform generator stores a calibration constant that sets the TCXO (or OCXO with option 0101) to put out exactly 10 MHz. The instrument should have been running continuously for 30 minutes prior to this calibration adjustment to ensure timebase stability.

  • Page 111: Internal Adc Adjustment

    Chapter 4 Calibration and Adjustment Internal ADC Adjustment Internal ADC Adjustment The waveform generator stores calibration constants related to the gain and offset of the internal ADC. Setup 6 must always be performed before any other amplitude adjustments are attempted. The internal ADC is then used as a source for the calibration constants generated in self calibration (setup 7).

  • Page 112: Self Calibration Adjustment

    Chapter 4 Calibration and Adjustment Self Calibration Adjustment. Self Calibration Adjustment. 1 Enter and begin the following setup. Setup Self-calibration. The output is disabled. * Constants are stored after completing this setup. 2 After performing setup 6 and 7: a. If your calibration procedures require you to verify the adjustment just made, exit the calibration menu and perform “DC Offset Voltage Verification”, on page 98.

  • Page 113: Output Impedance Adjustment

    Chapter 4 Calibration and Adjustment Output Impedance Adjustment Output Impedance Adjustment The waveform generator stores calibration constants for the output Impedance of the instrument. The output impedance constants are generated with and without the post-amplifier attenuator. 1 Set the DMM to measure offset-compensated, four-wire Ohms. Set the DMM to use 100 NPLC integration.

  • Page 114: Ac Amplitude (High-Impedance) Adjustment

    Chapter 4 Calibration and Adjustment AC Amplitude (high-impedance) Adjustment AC Amplitude (high-impedance) Adjustment The waveform generator stores a calibration constant for each high- impedance attenuator path. The gain coefficient of each path is calculated using two measurements; one with the waveform DAC at + output and one with waveform DAC at –...
  • Page 115 Chapter 4 Calibration and Adjustment AC Amplitude (high-impedance) Adjustment Nominal Signal Setup DC level +0.28 V Output of -32 dB range -0.28 V Output of -32 dB range +0.68 V Output of -24 dB range -0.68 V Output of -24 dB range +1.7 V Output of -16 dB range -1.7 V...

  • Page 116: -24 Db Range Flatness Adjustment

    Chapter 4 Calibration and Adjustment -24 dB Range Flatness Adjustment -24 dB Range Flatness Adjustment 1 Connect a precision AC Voltmeter to measure the output amplitude of channel 1 as shown below. Connect the BNC cable to the Wide Band input of the Fluke 5790A.
  • Page 117 Chapter 4 Calibration and Adjustment -24 dB Range Flatness Adjustment 3 Using the numeric keypad or knob, adjust the displayed voltage at each setup to match the measured voltage. Select ENTER VALUE. 4 After performing setup 45: a. If your calibration procedures require you to verify the adjustment just made, exit the calibration menu and perform “-24 dB Range Flatness Verification”, on page 101.

  • Page 118: Db Range Flatness Adjustment

    Chapter 4 Calibration and Adjustment -8 dB Range Flatness Adjustment -8 dB Range Flatness Adjustment 1 Connect a precision AC Voltmeter to measure the output amplitude of channel 1 as shown below. Connect the BNC cable to the Wide Band input of the Fluke 5790A.
  • Page 119 Chapter 4 Calibration and Adjustment -8 dB Range Flatness Adjustment 3 Using the numeric keypad or knob, adjust the displayed voltage at each setup to match the measured voltage. Select ENTER VALUE. 4 After performing setup 53: a. If your calibration procedures require you to verify the adjustment just made, exit the calibration menu and perform “-8 dB Range Flatness Verification”, on page 99.

  • Page 120: Self Calibration Adjustment (Channel 2)

    Chapter 4 Calibration and Adjustment Self Calibration Adjustment (Channel 2) Self Calibration Adjustment (Channel 2) 1 Enter and begin the following setup. Setup Self-calibration. The output is disabled. * Constants are stored after completing this setup. 2 After performing setup 54: a.

  • Page 121: Output Impedance Adjustment (Channel 2)

    Chapter 4 Calibration and Adjustment Output Impedance Adjustment (Channel 2) Output Impedance Adjustment (Channel 2) The waveform generator stores calibration constants for the output Impedance of the instrument. The output impedance constants are generated with and without the post-amplifier attenuator. 1 Set the DMM to measure offset-compensated, four-wire Ohms.

  • Page 122: Ac Amplitude (High-Impedance) Adjustment (Channel 2)

    Chapter 4 Calibration and Adjustment AC Amplitude (high-impedance) Adjustment (Channel 2) AC Amplitude (high-impedance) Adjustment (Channel 2) The waveform generator stores a calibration constant for each high- impedance attenuator path. The gain coefficient of each path is calculated using two measurements; one with the waveform DAC at + output and one with waveform DAC at –...
  • Page 123 Chapter 4 Calibration and Adjustment AC Amplitude (high-impedance) Adjustment (Channel 2) Nominal Signal Setup DC level +0.28 V Output of -32 dB range -0.28 V Output of -32 dB range +0.68 V Output of -24 dB range -0.68 V Output of -24 dB range +1.7 V Output of -16 dB range -1.7 V...

  • Page 124: Db Range Flatness Adjustment (Channel 2)

    Chapter 4 Calibration and Adjustment -24 dB Range Flatness Adjustment (Channel 2) -24 dB Range Flatness Adjustment (Channel 2) 1 Connect a precision AC Voltmeter to measure the output amplitude of channel 2 as shown below. Connect the BNC cable to the Wide Band input of the Fluke 5790A.
  • Page 125 Chapter 4 Calibration and Adjustment -24 dB Range Flatness Adjustment (Channel 2) 3 Using the numeric keypad or knob, adjust the displayed voltage at each setup to match the measured voltage. Select ENTER VALUE. 4 After performing setup 92: a. If your calibration procedures require you to verify the adjustment just made, exit the calibration menu and perform “-24 dB Range Flatness Verification”, on page 101 for Channel 2.

  • Page 126: Db Range Flatness Adjustment (Channel 2)

    -8 dB Range Flatness Adjustment (Channel 2) 1 Connect a precision AC Voltmeter to measure the output amplitude of channel 1 as shown below. Connect the BNC cable to the Wide Band input of the Fluke 5790A. 2 Use the precision AC Voltmeter to measure the output amplitude for each of the setups in the table below.
  • Page 127 Chapter 4 Calibration and Adjustment -8 dB Range Flatness Adjustment (Channel 2) 3 Using the numeric keypad or knob, adjust the displayed voltage at each setup to match the measured voltage. Select ENTER VALUE. 4 After performing setup 100, you have now completed the recommended adjustment procedures.

  • Page 128: Calibration Errors

    The following errors are failures that may occur during a calibration. System error messages are described in the SCPI Help File on the Agilent 33500 Series Product Reference CD provided with your instrument. Self-test error messages are described beginning on page 150.
  • Page 129 Chapter 4 Calibration and Adjustment Calibration Errors Self-calibration failed; Chan n, null DAC cal, invalid self cal Self-calibration failed; Chan n, offset DAC cal with attenuator, invalid self cal Self-calibration failed; Chan n, offset DAC cal no attenuator, invalid self cal An error occurred while trying to do an internal cal of the specified DAC.
  • Page 130 Chapter 4 Calibration and Adjustment Calibration Errors Self-calibration failed; Chan n, null DAC cal, convergence error sub attenuator value dB The internal null DAC calibration failed to converge on a value during the internal cal. Self-cal has exited without changing the self-cal constants.

  • Page 131: Chapter 6 Block Diagram

    Block Diagram...

  • Page 132: Block Diagram

    Block Diagram This chapter provides an overview of the various assemblies in the 33500 Series. • Block Diagram, on page 133 • Power Supplies, on page 137...

  • Page 133: Block Diagram

    Chapter 5 Block Diagram Block Diagram Block Diagram The waveform generator can be divided into four main assemblies: the processor, the main board, front panel, and the main power supply. A simplified block diagram is shown on page 136. The processor is a single board computer and, in addition to the CPU, contains the RAM, ROM, and circuits used to drive the GPIB, LAN, and USB ports.
  • Page 134 The signal is applied to the output amplifier. The DC offset is summed at the output amplifier. A post amplifier -23.87 dB attenuator is available for low level signals. The table below show the attenuators used to create the desired output signal amplitude. Output Range -23.87 dB -7.96 dB...
  • Page 135 Chapter 5 Block Diagram Block Diagram The Sync output signal is generated as a waveform from the FPGA to the Sync DAC. External trigger in and out is chassis referenced at the BNC connector but is isolated before the FPGA. Modulation in is an isolated input applied to the A/D converter.
  • Page 136 Chapter 5 Block Diagram Block Diagram Display Knob Keyboard Processor...

  • Page 137: Power Supplies

    Chapter 5 Block Diagram Power Supplies Power Supplies The line voltage is filtered and applied to the main power supply. This 15 volt supply is always on when line power is applied to the waveform generator. A regulator creates an earth referenced +3.3 Volt supply from the main supply.
  • Page 138 Chapter 5 Block Diagram Power Supplies...

  • Page 139: Chapter 7 Service And Repair

    Service and Repair...

  • Page 140: Service And Repair

    • Replaceable Parts, on page 156 • Disassembly, on page 157 Operating Checklist Before returning your instrument to Agilent Technologies for service or repair, check the following items: Is the instrument inoperative? • Verify that the ac power cord is connected to the instrument.

  • Page 141: Types Of Service Available

    If you have such a service contract and your instrument fails during the covered period, Agilent Technologies will repair or replace it in accordance with the contract. Obtaining Repair Service (Worldwide) To obtain service for your instrument (in–warranty, under service...

  • Page 142: Repackaging For Shipment

    Chapter 6 Service and Repair Repackaging for Shipment Repackaging for Shipment If the unit is to be shipped to Agilent for service or repair, be sure to: • Attach a tag to the unit identifying the owner and indicating the required service or repair.

  • Page 143: Electrostatic Discharge (Esd) Precautions

    Surface mount components should only be removed using soldering irons or desoldering stations expressly designed for surface mount components. Use of conventional solder removal equipment will almost always result in permanent damage to the printed circuit board and will void your Agilent Technologies factory warranty.

  • Page 144: Troubleshooting

    Chapter 6 Service and Repair Troubleshooting Troubleshooting This section provides a brief check list of common failures. Before troubleshooting or repairing the instrument, make sure the failure is in the instrument rather than any external connections. Also make sure that the instrument is accurately calibrated within the last year (see “Calibration Interval”, on page 87).
  • Page 145 Chapter 6 Service and Repair Troubleshooting Power Supplies Verify the main power supply. WARNING Shock Hazard. To check the power supplies, remove the instrument cover as described in “Disassembly”, on page 157. The main power supply provides a +15 Vdc supply to the main circuit board.
  • Page 146 Chapter 6 Service and Repair Troubleshooting +5 V ER +3.3 V ER +9 V ISO -9 V ISO -15 V ISO +9 V ISO +15 V ISO +3.3 V ISO +5 V ISO...
  • Page 147 Chapter 6 Service and Repair Troubleshooting Self-Test Errors 605 - 609 If the instrument reports self-test errors 605-609, this means the processor board is unable to correctly program or communicate with the waveform FPGA (U1005) on the main board. In this case further, troubleshooting is required to determine where the fault lies.
  • Page 148 Chapter 6 Service and Repair Troubleshooting Main Board LED Lights up after Boot This indicates that the FPGA is programmed and running. Most likely there is a communications failure from the main board to the processor board. Probe the J201, pin 27 line with an oscilloscope, and cycle power on the unit (wait for full boot) to see if there is activity on the line.
  • Page 149 Chapter 6 Service and Repair Troubleshooting Main Board LED Does not Light up after Boot This indicates that the processor was unable to program the FPGA. Most likely there is a communications failure from the processor board to the main board. Probe the following serial data lines at power up with an oscilloscope: J201, pin 23 J201, pin 24...

  • Page 150: Self-Test Procedures

    Chapter 6 Service and Repair Self-Test Procedures Self-Test Procedures Power-On Self-Test Each time the instrument is powered on, a subset of self-tests are performed. These tests check that the minimum set of logic and subsystems are functioning properly. Full Self-Test The successful execution of the self-test procedure provides a high degree of confidence that the waveform generator is operating normally.
  • Page 151 Chapter 6 Service and Repair Self-Test Procedures Remote I/O Execution 1 While not required, it is recommended that all input connections to the instrument be removed before running self-test. Cycle power to reboot the instrument and run the power-on self test. 2 Make a connection the instrument using the remote interface see (“To Configure the Remote Interface”, on page 75).
  • Page 152 Chapter 6 Service and Repair Self-Test Procedures Self-Tests Error Numbers and Messages A failure can generated multiple error messages. The earliest message generated should be considered the primary cause of failure. Note Some self test messages include a channel number. The channel number, n, will be replaced with the number 1 or 2 depending upon which channel failed.
  • Page 153 Chapter 6 Service and Repair Self-Test Procedures Error Message and Meaning Probable Cause Self-test failed; waveform FPGA revision check failed Processor Board or Main Board* This error indicates the processor tried to read the revision register from the waveform FPGA (U1005) and received an invalid value. This could be due to an un-programmed FPGA or an internal SPI communications failure.
  • Page 154 Chapter 6 Service and Repair Self-Test Procedures Error Message and Meaning Probable Cause Self-test failed; Chan n, waveform memory not initialized Main Board Waveform RAM for the indicated channel (U1101 or U1102) failed to initialize. Self-test failed; modulation ADC offset too low Main Board Self-test failed;...
  • Page 155 Chapter 6 Service and Repair Self-Test Procedures Error Message and Meaning Probable Cause Self-test failed; Chan n, sub attenuator <-7.00 to 0.00>dB too low Main Board Self-test failed; Chan n, sub attenuator <-7.00 to 0.00>dB too high This error indicates the trim DAC inside the waveform DAC (U1801 or U1501) is producing output outside of the expected range.

  • Page 156: Replaceable Parts

    Chapter 6 Service and Repair Replaceable Parts Replaceable Parts Caution Always use anti-static techniques when assemblies are handled or serviced. The following table lists the replacement assemblies for the 33500 Series Function/Arb Generators: Part Number Description 34401-86020 Bumper Kit 34401-45021...

  • Page 157: Disassembly

    Chapter 6 Service and Repair Disassembly Disassembly For procedures in this manual, the following tools are required for disassembly: • T15 Torx driver (most disassembly) • T8 Torx driver (front panel disassembly) • Posidriv and flat bladed screw drivers • 14 mm nut driver, hollow shaft (rear-panel BNC connectors) •...
  • Page 158 Chapter 6 Service and Repair Disassembly General Disassembly Procedure 1 Turn off the power. Remove all cables from the instrument. 2 Rotate the handle upright and pull off. 3 Pull off the instrument bumpers.
  • Page 159 Chapter 6 Service and Repair Disassembly 4 Loosen the two captive screws in the rear bezel and remove the rear bezel. Loosen Screws 5 Slide off the instrument cover. Slide Cover Off Many of the service procedures can now be performed without further disassembly.
  • Page 160 Chapter 6 Service and Repair Disassembly Main Component Disassembly 1 Remove the processor board. Turn the instrument over. Remove the T-8 screw securing the processor board. Press the tabs on the processor board connector and slide the processor board toward the back of the instrument to disengage the connector.
  • Page 161 Chapter 6 Service and Repair Disassembly 2 Remove the front panel assembly. Remove the T15 screw holding the main board. Press the latch on the left side of the front panel and the latch in the power supply cover on the right side of the front panel. Push the sides of the metal chassis toward the center to disengage the studs on either side of the front panel assembly.
  • Page 162 Chapter 6 Service and Repair Disassembly 3 Removing the Main Board. Disconnect the power supply connector from the main board. Disconnect the GPIB and Oscillator In ribbon cables. Disconnect the fan power cable from the main board. Loosen and remove the nuts securing the Modulation In and Ext Trigger BNC connector to the rear panel.
  • Page 163 Chapter 6 Service and Repair Disassembly 4 Removed the Power Supply. Disconnect the input power to the power supply board (blue and brown wires). Disconnect the green ground connector on the power supply board. Remove the screw securing the power supply cover to the chassis. Slide the power supply assembly toward the front of the instrument and remove.
  • Page 164 Chapter 6 Service and Repair Disassembly Front Panel Disassembly 1 Remove the knob by pulling straight off. Remove the six T8 screws securing the front panel bracket to the front panel assembly. Lift out the bracket.
  • Page 165 Chapter 6 Service and Repair Disassembly 2 Disconnect the display ribbon cable from the front panel board. Remove the T8 screws securing the front panel board to the front panel assembly. Lift out the printed circuit board. Ribbon Cable Screw 3 All additional front panel assemblies can now be lifted out of the front panel housing.
  • Page 166 Chapter 6 Service and Repair Disassembly...

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