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Service

1

Agilent 1000A Series Oscilloscopes Service Guide

21

To test analog bandwidth, maximum frequency

C A U T I O N

Ensure that the input voltage to the oscilloscope never exceeds 300 Vrms.

N O T E

This procedure is the only acceptable method for testing the bandwidth of a 1000A Series
oscilloscope.

Table 5

Analog Bandwidth Specification

Analog Bandwidth (-3 dB)

DSO102xA

200 MHz

DSO101xA

100 MHz

DSO100xA

60 MHz

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Summary of Contents for 1000A Series

Page 1: ...s1 Agilent 1000A Series Oscilloscopes Service Guide ...

Page 2: ... document that conflict with these terms the warranty terms in the sep arate agreement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accor dance with the terms of such license Restricted Rights Legend U S Government Restricted Rights Soft ware and technical data rights granted to the federal...

Page 3: ...ering edge pulse width video pattern and alternate modes with adjustable sensitivity to filter noise and avoid false triggers Math function waveforms add subtract multiply FFT USB ports 2 host 1 device for easy printing saving and sharing of waveforms setups screen BMP files and CSV data files Internal storage for 10 waveforms and 10 setups Special digital filter and waveform recorder Built in 6 d...

Page 4: ...copes Service Guide In This Book This guide contains service information for the Agilent 1000A Series oscilloscopes 1 Service Describes oscilloscope maintanance performance testing and what to do if your oscilloscope requires service ...

Page 5: ...he Oscilloscope 12 Testing Performance 13 Before Testing Performance 14 To test DC gain accuracy 16 To test analog bandwidth maximum frequency 21 To test time scale accuracy 29 To test trigger sensitivity 32 Performance Test Record 35 Returning the Oscilloscope to Agilent for Service 39 Contacting Agilent 40 A Safety Notices 41 Warnings 41 Safety Symbols 42 Index 43 ...

Page 6: ...6 Agilent 1000A Series Oscilloscopes Service Guide Contents ...

Page 7: ...Menu Item 19 Figure 4 Connecting Equipment for Maximum Frequency Check Test 23 Figure 5 Channel 1 Vertical Scale Setting 24 Figure 6 Channel 1 Horizontal Scale Setting 24 Figure 7 Averages Menu Item 25 Figure 8 Signal Generator Waveform 26 Figure 9 Connecting Equipment for Time Scale Accuracy Test 30 Figure 10 Connecting Equipment for Trigger Sensitivity Test 33 ...

Page 8: ...8 Agilent 1000A Series Oscilloscopes Service Guide Figures ...

Page 9: ...e 6 Equipment Required for Analog Bandwidth Test 22 Table 7 Oscilloscope Models and Signal Generator Frequency 27 Table 8 Time Scale Accuracy Specification 29 Table 9 Equipment Required for Time Scale Accuracy Test 30 Table 10 Trigger Sensitivity Specification 32 Table 11 Equipment Required for Trigger Sensitivity Test 32 Table 12 Performance Test Information 35 Table 13 DC Gain Test 35 Table 14 A...

Page 10: ...10 Agilent 1000A Series Oscilloscopes Service Guide Tables ...

Page 11: ...ning the Oscilloscope 12 Testing Performance 13 Performance Test Record 35 Returning the Oscilloscope to Agilent for Service 39 Contacting Agilent 40 This chapter describes oscilloscope maintanance performance testing and what to do if your oscilloscope requires service ...

Page 12: ...2 Clean the external surfaces of the instrument with a soft cloth dampened with a mixture of mild detergent and water 3 Make sure that the instrument is completely dry before reconnecting it to a power source CAUTION Do not use too much liquid in cleaning the oscilloscope Water can enter the oscilloscope s front panel damaging sensitive electronic components ...

Page 13: ...pace to record test results Test Order The tests in this section may be performed in any order desired However it is recommended to conduct the tests in the order presented in this manual as this represents an incremental approach to performance verification This may be useful if you are attempting to troubleshoot a suspected problem Test Equipment Lists of equipment needed to conduct each test ar...

Page 14: ...or compatibility Agilent E4418B Power Sensor Analog Bandwidth 100 kHz to 1 GHz 3 accuracy Agilent 8482A Power Splitter Analog Bandwidth Outputs differ by 0 15 dB Agilent 11667B BNC Cable DC Gain Accuracy qty 2 Time Scale Accuracy Trigger Sensitivity 50Ω characteristic impedance BNC m connectors Agilent 8120 1840 Agilent 10503A BNC Tee Adapter DC Gain Accuracy BNC Tee m f f Agilent 1250 0781 BNC to...

Page 15: ...y on the front panel 2 In the Utility menu press Self Cal 3 Follow the on screen instructions NOTE Let the oscilloscope warm up before testing The oscilloscope under test must be warmed up with the oscilloscope application running for at least 30 minutes prior to the start of any performance test ...

Page 16: ... div to 5 mV div 4 0 full scale 10 mV div to 5 V div 3 0 full scale Full scale is defined as 8 vertical divisions The major scale settings are 2 mV 5 mV 10 mV 20 mV 50 mV 100 mV 200 mV 500 mV 1 V 2 V and 5 V Table 4 Equipment Required for DC Gain Accuracy Test Description Critical Specifications Recommended Model Part Numbers Power Supply 0 V to 35 V DC 10 mV resolution Agilent E3633A or Agilent E...

Page 17: ...cilloscopes Service Guide 17 6 Set the channel 1 probe attenuation to 1X 7 Set the channel 1 vertical sensitivity value to 2 mV div 8 Set the power supply to 6 mV 9 Connect the equipment as shown in Figure 2 Figure 1 Averages Menu Item ...

Page 18: ...ice Guide 10 Press Measure 11 Press the Voltage softkey 12 Turn the entry knob to select the Vavg measurement as shown below Oscilloscope Power Supply BNC tee Digital Multimeter BNC f to dual banana Figure 2 Connecting Equipment for DC Gain Accuracy Test ...

Page 19: ... DMM voltage reading as VDMM ii Record the oscilloscope Vavg reading as VScope c Calculate the DC Gain using the following expression and record this value in the DC Gain Test section of the Performance Test Record 14 Repeat step 15 through step 23 for channel 2 on two channel oscilloscope models or for channels 2 3 and 4 on four channel models 15 Set the power supply voltage to 6 mV 16 Move the B...

Page 20: ...l s vertical sensitivities in the DC Gain Test section of the Performance Test Record on page 35 a For the positive power supply setting i Record the DMM voltage reading as VDMM ii Record the oscilloscope Vavg reading as VScope b For the negative power supply setting i Record the DMM voltage reading as VDMM ii Record the oscilloscope Vavg reading as VScope c Calculate the DC Gain using the followi...

Page 21: ...ncy CAUTION Ensure that the input voltage to the oscilloscope never exceeds 300 Vrms NOTE This procedure is the only acceptable method for testing the bandwidth of a 1000A Series oscilloscope Table 5 Analog Bandwidth Specification Analog Bandwidth 3 dB DSO102xA 200 MHz DSO101xA 100 MHz DSO100xA 60 MHz ...

Page 22: ...ps Agilent 8648A Agilent E4400B or Agilent N5181A Power Meter Agilent E series with power sensor compatibility Agilent E4418B Power Sensor 100 kHz to 1 GHz 3 accuracy Agilent 8482A Power Splitter Outputs differ by 0 15 dB Agilent 11667B SMA Cable SMA m to SMA m 24 inch 50Ω BNC Feed Through Adapter 50Ω BNC f to BNC m feed through terminator Agilent 0960 0301 Type N to SMA Adapter Type N m to SMA f ...

Page 23: ...easurements in units of Watts 4 Press the Default Setup front panel key 5 Press the Auto Scale front panel key 6 Set the channel 1 probe attenuation to 1X 7 Set the channel 1 vertical scale to 200 mV div Oscilloscope Power Meter E4418B Power sensor cable Signal Generator Power splitter 11667B Type N m to SMA f adapter Power sensor 8482A SMA cable SMA to BNC adapter 50W feed through Figure 4 Connec...

Page 24: ...1 Service 24 Agilent 1000A Series Oscilloscopes Service Guide 8 Set the horizontal scale to 500 ns div Figure 5 Channel 1 Vertical Scale Setting Figure 6 Channel 1 Horizontal Scale Setting ...

Page 25: ...pears 11 Press Average and turn the entry knob until 8 appears 12 Press Measure 13 Press the Voltage softkey 14 Turn the entry knob to select the Vpp menu item 15 Set the signal generator to a 1 MHz sine wave with a peak to peak amplitude of about 6 divisions as it appears on the oscilloscope screen Figure 7 Averages Menu Item ...

Page 26: ...e Test Record on page 35 For example if Vpp 1 20 V 17 Using the power meter reading convert this measurement to Volts RMS using the expression and record it in the Performance Test Record on page 35 For example if Pmeas 3 65 mW Figure 8 Signal Generator Waveform Vpp reading Vout1MHz Vpp1MHz 2 2 Vout1MHz 1 20 2 2 1 20 2 828 424 mV Vin1MHz Pmeas 50Ω Vin1MHz 3 65 mW 50Ω 427 mV ...

Page 27: ...in the table above 21 Using the Vpp reading calculate the Vrms value using the following expression and record it in the Performance Test Record on page 35 For example if Vpp 1 24 V 22 Using the power meter reading convert this measurement to Volts RMS using the expression and record it in the Performance Test Record on page 35 Table 7 Oscilloscope Models and Signal Generator Frequency Setting Mod...

Page 28: ...quency 427 mV and Gain 1 MHz 0 993 then Record this value in the Calculated Gain Max Freq column in the Analog Bandwidth Maximum Frequency Check section of the Performance Test Record on page 35 To pass this test this value must be greater than 3 0 dB 24 For the remaining channels move the power splitter to the channel and repeat steps 4 through 23 Vinmax 3 65 mW 50Ω 427 mV Gain max 20 log10 Voutm...

Page 29: ...ccuracy component applies to the oscilloscope s accuracy on the date of its shipment to the customer A temperature component refers to the ambient temperaure in which the oscilloscope operates An aging component scales linearly from the oscilloscope s manufacture date and adds to the initial accuracy and temperature components You can get the years since manufacture from the serial number which is...

Page 30: ...ns Recommended Model Part Numbers Signal Generator 100 kHz 1 GHz 0 01 Hz frequency resolution jitter 2 ps Agilent N5181A Agilent E4400B or Agilent 8648A BNC Cable 50Ω characteristic impedance BNC m connectors Agilent 8120 1840 Agilent 10503A Type N to BNC Adapter Type N m to BNC f Agilent 1250 0780 50Ω BNC Feed Through Adapter 50Ω BNC f to BNC m feed through terminator Agilent 0960 0301 Figure 9 C...

Page 31: ...s cross center screen g Ensure the horizontal position control is set to 0 0 seconds 4 Make the measurement a Set oscilloscope horizontal sweep speed control to 1 ms div b Set horizontal position control to 1 ms rotate control counter clockwise c Set the oscilloscope horizontal sweep speed control to 10 ns div d Turn on the zoomed time base by pressing the Menu Zoom key followed by the Zoom softke...

Page 32: ...mV div 1 div from DC to 10 MHz 1 5 div from 10 MHz to full bandwidth 5 mV div 1 div from DC to 10 MHz 1 5 div from 10 MHz to 20 MHz Table 11 Equipment Required for Trigger Sensitivity Test Description Critical Specifications Recommended Model Part Numbers Signal Generator 100 kHz to 1 GHz at 200 mVrms 0 01 Hz frequency resolution jitter 2 ps Agilent 8648A Agilent E4400B or Agilent N5181A BNC Cable...

Page 33: ... the signal generator to the bandwidth boundary and set the amplitude to about 10 mVpp c Press the Auto Scale key d Set the horizontal scale so that a few cycles of the waveform are displayed e Set the input channel s probe attenuation to 1X f Set the input channel s vertical scale to 5 mV div g Decrease the amplitude from the signal generator to the specified vertical division 1 5 div at maximum ...

Page 34: ...ut frequency of the signal generator to the bandwidth boundary and set the amplitude to about 10 mVpp c Press the Auto Scale key d Set the horizontal scale so that a few cycles of the waveform are displayed e Set the input channel s probe attenuation to 1X f Set the input channel s vertical scale to 2 mV div g Decrease the amplitude from the signal generator to the specified vertical division 1 5 ...

Page 35: ... Testing ________________________ Temperature ____________ Table 13 DC Gain Test Vertical Sensitivity Power Supply Setting VDMM VDMM VScope VScope Calculated DC Gain Offset Gain Test Limits Channel 1 2 mV div 6 mV 0 96 to 1 04 5 mV div 15 mV 0 96 to 1 04 10 mV div 30 mV 0 97 to 1 03 20 mV div 60 mV 0 97 to 1 03 50 mV div 150 mV 0 97 to 1 03 100 mV div 300 mV 0 97 to 1 03 200 mV div 600 mV 0 97 to ...

Page 36: ...o 1 03 2 V div 6 0 V 0 97 to 1 03 5 V div 15 0 V 0 97 to 1 03 Channel 3 2 mV div 6 mV 0 96 to 1 04 5 mV div 15 mV 0 96 to 1 04 10 mV div 30 mV 0 97 to 1 03 20 mV div 60 mV 0 97 to 1 03 50 mV div 150 mV 0 97 to 1 03 100 mV div 300 mV 0 97 to 1 03 200 mV div 600 mV 0 97 to 1 03 500 mV div 1 5 V 0 97 to 1 03 1 V div 3 0 V 0 97 to 1 03 2 V div 6 0 V 0 97 to 1 03 5 V div 15 0 V 0 97 to 1 03 Table 13 DC...

Page 37: ...0 V 0 97 to 1 03 2 V div 6 0 V 0 97 to 1 03 5 V div 15 0 V 0 97 to 1 03 Table 13 DC Gain Test continued Vertical Sensitivity Power Supply Setting VDMM VDMM VScope VScope Calculated DC Gain Offset Gain Test Limits Table 14 Analog Bandwidth Maximum Frequency Check Vin 1 MHz Vout 1 MHz Calculated Gain 1 MHz Test Limit greater than 3 dB Vin Max Freq Vout Max Freq Calculated Gain Max Freq Test Limit gr...

Page 38: ...me scale error ppm Pass Fail 50 ppm from 0 C to 30 C 50 ppm 2 ppm per C from 30 C to 45 C 5 ppm years since manufacture Table 16 Trigger Sensitivity Test Limits Ch1 Ch2 C3 Ch4 5 mV div 1 5 division at maximum bandwidth 5 mV div 1 division at 10 MHz 5 mV div 1 5 division at 20 MHz 5 mV div 1 division at 10 MHz ...

Page 39: ...essories from the oscilloscope Accessories include all cables Do not include accessories unless they are associated with the failure symptoms 3 Protect the oscilloscope by wrapping it in plastic or heavy paper 4 Pack the oscilloscope in foam or other shock absorbing material and place it in a strong shipping container You can use the original shipping materials or order materials from an Agilent T...

Page 40: ...1 Service 40 Agilent 1000A Series Oscilloscopes Service Guide Contacting Agilent Information on contacting Agilent Technologies can be found at www agilent com find contactus ...

Page 41: ...must connect the protective earth terminal of the instrument to the protective conductor of the mains power cord The mains plug shall only be inserted in a socket outlet provided with a protective earth contact You must not negate the protective action by using an extension cord power cable without a protective conductor grounding Grounding one conductor of a two conductor outlet is not sufficient...

Page 42: ...perform any unauthorized modification to the instrument Capacitors inside the instrument may retain a charge even if the instrument is disconnected from its source of supply Do not operate the instrument in the presence of flammable gasses or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard Do not use the instrument in a manner not specified ...

Page 43: ...frequency counter hardware 3 H hardware frequency counter 3 I input voltage 16 21 internal storage 3 L LCD display 3 M math function waveforms 3 memory 3 model number 39 P performance test interval 13 performance test record 13 performance testing 13 R refresh rate 3 S safety notices 41 symbols 42 sample rate 3 serial number 39 symbols safety 42 T test equipment 13 testing performance 13 time meas...

Page 44: ...44 Agilent 1000A Series Oscilloscopes Service Guide Index ...

Page 45: ......

Page 46: ...s1 Agilent Technologies Inc 2009 2013 Available in electronic format only Third Edition April 2013 54130 97015 54130 97015 www agilent com ...

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