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The Auto-Measure Menu

One of the primary features of the oscilloscope is its ability to make
parametric measurements on displayed waveforms.  This chapter
provides details on how automatic measurements are performed and
gives some tips on how to improve automatic measurement results. 

You access the Auto-Measure menu by touching the menu field (top
row, second from the left), then by selecting Auto-Measure from the
pop-up menu that appears.

There are nine automatic measurements available in the automatic
measurement menu: 

•

Period

•

Risetime

•

Falltime

•

Frequency

•

+Width

•

-Width

•

Vp_p

•

Preshoot

•

Overshoot

Auto-Measure Menu Map

The menu map on the next page illustrates all fields and the available
options in the Auto-Measure menu.  The menu map will help you get
an overview as well as provide you with a quick reference of what the
Auto-Measure menu contains.

8-2

Summary of Contents for 16533A

Page 1: ...4 97009 February 1999 For Safety Information Warranties and Regulatory Information see the pages behind the Index Copyright Hewlett Packard Company 1991 1999 All Rights Reserved HP 16533A 1 GSa s and HP 16534A 2 GSa s Digitizing Oscilloscope ...

Page 2: ...e HP 16500B C logic analysis system cross domain measurements are time correlated and displayed together on the same screen Memory depth of 32 KBytes per channel allows the HP 16533 34A to capture a sufficiently long analog record prior to trigger A long record allows adequate time resolution to identify errors confidently Configuration Either model can be used as a single card module or in a mult...

Page 3: ...16532A file is loaded into an HP 16533 34A the HP 16533 34A will set up identically However the HP 16532A data will not be read or displayed The HP 16532A cannot load files that were stored from an HP 16533 34A You cannot mix HP 16532A and HP 16533 34A cards in a multi card module The HP 16533 34A Oscilloscope iii ...

Page 4: ...ime base functions sweep speed horizontal position pan and zoom and sample period display Chapter 5 describes time marker functions both manual and automatic It describes the capabilities of both manual and automatic time markers and the fields available in each then describes the function of each of these fields It also decribes voltage markers the fields available to them and the function of eac...

Page 5: ...apter 11 describes the module installation and bench service procedures The Index is an alphanumeric listing of the subject matter contained in this book The Glossary defines some of the common terms you will find throughout this book Run Stop Options 1 The Channel Menu 3 Autoscale 2 Time Base Functions 4 The Marker Menu 5 The Trigger Menu 6 The Display Menu 7 The Auto Measure Menu 8 The Waveform ...

Page 6: ...vi ...

Page 7: ... Autoscale Algorithm 2 6 3 The Channel Menu Input Field 3 4 V Div Field 3 5 Offset Field 3 6 Probe Field 3 7 Coupling Field 3 7 Preset Field 3 8 4 Time Base Functions s Div Field 4 3 Delay Field 4 5 Sample Period Field 4 8 5 The Marker Menu Manual Time Markers Options 5 5 Tx to To Field 5 6 Trig to X Field 5 7 Trig to O Field 5 8 Channel Label Field 5 8 T Marker Value Display 5 9 Contents 1 ...

Page 8: ... the Manual Automatic Time Markers Option 5 17 Voltage Markers Options 5 18 Va On Field 5 19 Va Volts Field 5 19 Vb On Field 5 20 Vb Volts Field 5 20 Va to Vb Field 5 21 Center Screen Field 5 21 V Marker Value Display 5 22 6 The Trigger Menu Trigger Marker 6 4 Edge Trigger Mode 6 5 Source Field 6 6 Level Field 6 7 Slope Field 6 9 Count Field 6 9 Auto Trig Field 6 10 Pattern Trigger Mode 6 11 Chann...

Page 9: ...uto Measure Menu Automatic Measurement Fields 8 4 Input Field 8 4 Automatic Measurements Display 8 4 Automatic Measurement Prerequisites 8 5 Measurement Setup Requirements 8 5 Criteria Used for Making Automatic Measurements 8 6 Automatic Measurement Algorithms 8 7 Top and Base Voltages 8 7 Measurement Algorithms 8 8 9 The Waveform Selection Menu Module Field 9 4 Channel Mode Field 9 5 Action Field...

Page 10: ... 11 3 To install the module 11 5 To configure the HP 16533 34A module 11 6 To reconfigure a multi card module into single card modules 11 8 To turn on the system 11 8 To test the module 11 8 To clean the module 11 8 Calibrating and Adjusting 11 9 Calibration frequency 11 9 Multi card oscilloscope calibration 11 9 To calibrate the oscilloscope 11 10 Set up the equipment 11 10 Self Cal menu calibrat...

Page 11: ...1 Run Stop Options ...

Page 12: ... 16501A Logic Analysis System User s Reference or the Correlating Measurements chapter in the HP 16500C 16501A Logic Analysis System User s Reference Manually running or stopping the oscilloscope is controlled by the Run Stop field All of the run and stop options are explained in this chapter The Run Stop field is in the upper right corner of all oscilloscope menus Remember when the Run Stop field...

Page 13: ...cope running The oscilloscope runs using the parameters that are currently set Additionally it runs in the mode single or repetitive that was last selected If no run mode is selected prior to selecting a run the run mode defaults to single mode When you touch and hold your finger on the Run field a pop up menu appears The pop up contains the selections Single Repetitive and Cancel To select one of...

Page 14: ...is manner until you touch the Stop field As in single mode each 32768 sample waveform record is acquired in a single acquisition To start the oscilloscope running in the repetitive mode after it has been running in single mode touch the green Run field Slide your finger down to the Repetitive field in the pop up until the Repetitive field turns white then remove your finger from the screen This st...

Page 15: ...2 Autoscale ...

Page 16: ... one or more waveforms When you touch the Autoscale field and select Continue the autoscale algorithm starts and the screen displays the advisory message Autoscale is in progress This chapter discusses how the autoscale algorithm works It also discusses what fields are affected by the autoscale algorithm 2 2 ...

Page 17: ...dentally touch the Autoscale field you can touch the Cancel field in the pop up menu to cancel the autoscale process The cancel feature keeps you from inadvertently changing your oscilloscope setup Continue When you touch the Continue field the autoscale algorithm starts and the screen displays the advisory message Autoscale is in progress Once the autoscale operation begins it cannot be canceled ...

Page 18: ... no activity is found on an input channel the original pre autoscale vertical settings are restored When all input signals have been vertically scaled the time base settings s Div and delay are scaled The time base settings are determined based on the input signal for a single channel Finding the Time Base Settings The time base settings s Div and delay are determined based on the input signal of ...

Page 19: ...g is based on a higher numbered channel it will not be used as the trigger source Instead the trigger source will default to channel 1 The trigger point on the waveform is determined by the trigger level set by the autoscale algorithm The trigger point is displayed as a dotted vertical red line at the center of the screen when Delay is set to 0 s What the Autoscale Algorithm Does When a Signal Can...

Page 20: ...et of input signal Trigger Mode Source Level Slope Count Auto Trig Defaults to Edge Either channel 1 or channel 2 If no input signal exists for channel 1 or channel 2 it defaults to channel 1 Scaled depending on amplitude of lowest numbered input with signal present Defaults to Positive Defaults to 1 Defaults to On All Applicable s Div Delay Scaled depending on frequency of lowest numbered input w...

Page 21: ...3 The Channel Menu ...

Page 22: ...of the input channel shown in the Input field The Channel menu also gives you preset vertical sensitivity offset and trigger level values for ECL and TTL logic levels Channel Menu Map The menu map on the next page illustrates all fields and the available options for the Channel menu The menu map will help you get an overview as well as provide you with a quick reference of what the Channel menu co...

Page 23: ...Channel Field Menu Map The Channel Menu 3 3 ...

Page 24: ...ch contains the card The number 1 identifies the input connector on the rear of the card For a two card oscilloscope module A1 identifies the card location as slot A and the input location as channel 1 Likewise A2 identifies the card location as slot A and the input location as channel 2 For oscilloscope modules installed in an HP 16500B C Logic Analysis System mainframe two inputs are available f...

Page 25: ...r of the display As you turn the knob the vertical sensitivity changes in a 1 2 4 sequence from 4 mV Div to 10 V Div 1 1 probe Vertical sensitivity can also be entered from the pop up keypad The keypad appears when you touch the V Div field when the field is light blue Any valid value from 4 mV Div to 10 V Div 1 1 probe can be entered from the keypad The vertical sensitivity value is set to the tw...

Page 26: ...ion 4 mV 100 mV Div 2 V 1 mV 100 mV 500mV Div 10 V 1 mV 500mV 2 5 V Div 50 V 1 mV 2 5 V 10 V Div 250 V 2 mV When you select the Offset field the offset value of the channel currently displayed in the Input field can be changed by turning the knob As you turn the knob the value in the Offset field changes and the position of the waveform moves up or down on the waveform display Offset works similar...

Page 27: ...l are automatically adjusted to reflect the attenuation factor The marker and automatic measurement voltage values change when Run is touched and the next acquisition is displayed The default value for the Probe field is 10 1 for 10 1 divider probes Coupling Field You use the Coupling field to set the input impedance for the channel currently displayed in the Input field Coupling Field Selections ...

Page 28: ...TL or ECL the parameters are preset to the values shown in the following table Preset Values Parameter ECL TTL V Div 500 mV 1 5 V Offset 1 300 V 2 5 V Trigger Level 1 300 V 1 620 V When any of the ECL or TTL preset values are changed from the preset values listed above the Preset field will change to User and the new values become the new User values The User values remain the same until you manua...

Page 29: ...4 Time Base Functions ...

Page 30: ...nd Delay fields are located in the bottom row of fields These two fields are displayed on all of the oscilloscope menus except for the Calibration menu When the s Div is changed in a multi card module all channels are sampled according to the new timebase setting When the Delay field is changed in a multi card module all channels are delayed according to the new delay setting 4 2 ...

Page 31: ...kwise a small amount expands the displayed waveform horizontally in both directions from the center of the display Turning the knob counter clockwise a small amount compresses the displayed waveform horizontally in both directions toward the center of the display As you turn the knob the sweep speed changes in a 1 2 5 sequence 10 0 ns 20 0 ns 50 0 ns etc from 1 ns div to 5 s div HP 16533A and 500 ...

Page 32: ...ped the oscilloscope displays the sample points stored in acquisition memory on the screen When you change the sweep speed the new screen display is a different presentation of the data retained in acquisition memory when acquisitions were stopped Presenting the same data in a different form zooming is normally used on a waveform acquired in Single mode Zooming while in repetitive mode will change...

Page 33: ...rigger point When delay time is zero the trigger point will be at the center of the screen If you have a multi card oscilloscope configuration the Delay field is set on the master card All other cards in the multi card module will use the same Delay setting as the master card When you select the Delay field delay time can be changed by turning the knob Remember that the trigger point is always del...

Page 34: ... 99 99 ns div and faster and can be set to 5 digit resolution at sweep speeds of 100 ns div and slower When run mode is set to Repetitive the valid Delay range is Pre trigger delay range 16384 sample period Post trigger delay range is equal to the following Time Div Setting Available Delay 100 ms to 5 s div 2 5 ks 1 us 50 ms div 33 500 x s div 1 ns to 500 ns div 32 7 ms HP 16533A 500 ps to 200 us ...

Page 35: ...of the data stored in acquisition memory was stored before the delay time setting and one half of the data in memory was stored after the delay time setting Panning allows you to view the entire waveform record by adjusting the Delay field Normally using the delay function to view all of the acquired waveform panning is done on a waveform acquired in Single single shot mode Using the Center Screen...

Page 36: ...le rate at which the last acquisition was taken When the s Div field is light blue you can turn the knob to change the time base setting During a repetitive run the Data acquired at field and the Next acquisition field will display the same value on the first acquisition following a s Div setting change This happens because the hardware is reprogrammed between acquisitions in response to the new t...

Page 37: ... used to access the channel labeling field Refer to the Display Menu chapter for channel labeling details Refer to the Marker Menu chapter for further details about the Marker Value display On the marker menu if time markers are turned off the Sample Period display will appear on the marker menu If time markers are selected as either On or Auto the Sample Period display is not visible on the Marke...

Page 38: ...20 µs 10 µs 4 µs 2 µs 1 µs 400 ns 200 ns 100 ns 40 ns 20 ns 10 ns 4 ns 2 ns 1 ns 500 ps 500 ps 500 ps 500 ps 500 ps 500 ps 500 ps 500 ps 500 ps 327 68 s 131 07 s 65 536 s 32 768 s 13 107 s 6 553 s 3 276 s 1 310 s 655 36 ms 327 68 ms 131 07 ms 65 536 ms 32 768 ms 13 107 ms 6 553 ms 3 276 ms 1 310 ms 655 36 µs 327 68 µs 131 07 µs 65 536 µs 32 768 µs 16 384 µs 16 384 µs 16 384 µs 16 384 µs 16 384 µs ...

Page 39: ...9 µs 8 19 µs 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 1675 s 670 s 335 s 167 s 67 0 s 33 5 s 16 7 s 6 70 s 3 35 s 1 67 s 670 ms 335 ms 167 ms 67 0 ms 33 5 ms 16 7 ms 8 35 ms 8 35 ms 8 35 ms 8 35 ms 8 35 ms 8 35 ms 8 35 ms 8 35 ms 8 35 ms 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks ...

Page 40: ... ms 400 µs 200 µs 100 µs 40 µs 20 µs 10 µs 4 µs 2 µs 1 µs 400 ns 200 ns 100 ns 40 ns 20 ns 10 ns 4 ns 2 ns 1 ns 1 ns 1 ns 1 ns 1 ns 1 ns 1 ns 1 ns 1 ns 327 68 s 131 07 s 65 536 s 32 768 s 13 107 s 6 553 s 3 276 s 1 310 s 655 36 ms 327 68 ms 131 07 ms 65 536 ms 32 768 ms 13 107 ms 6 553 ms 3 276 ms 1 310 ms 655 36 µs 327 68 µs 131 07 µs 65 536 µs 32 768 µs 32 768 µs 32 768 µs 32 768 µs 32 768 µs 32...

Page 41: ...µs 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 1675 s 670 s 335 s 167 s 67 0 s 33 5 s 16 7 s 6 70 s 3 35 s 1 67 s 670 ms 335 ms 167 ms 67 0 ms 33 5 ms 16 7 ms 16 7 ms 16 7 ms 16 7 ms 16 7 ms 16 7 ms 16 7 ms 16 7 ms 16 7 ms 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 Ks 2 5 ...

Page 42: ...4 14 ...

Page 43: ...5 The Marker Menu ...

Page 44: ...s only The markers are accessed when you touch the Markers choice on the oscilloscope menu pop up The default selection for both the time and voltage Marker fields is Off Markers Menu Map The menu map on the next page illustrates all fields and the available options in the Markers menu The menu map will help you get an overview as well as provide you with a quick reference of what the Marker menu ...

Page 45: ...Markers Field Menu Map The Marker Menu 5 3 ...

Page 46: ...Markers Field Menu Map Continued The Marker Menu 5 4 ...

Page 47: ...n the T Markers menu three new fields appear to the right of the T Markers field Tx to To Trig to X and Trig to O fields These fields allow you to position the Tx marker and the To marker by entering time values for these markers When time markers are turned on and voltage markers are turned off the channel label field displays voltage values for the Tx and To markers except for waveforms where Ov...

Page 48: ...h half is then either added to or subtracted from the Tx marker while the other half is either added to or subtracted from the To marker depending on one of four possibilities If the Tx marker is to the left of the To marker and you are increasing the time between markers subtract one half from the Tx marker value and add the other half to the To marker value If the Tx marker is to the left of the...

Page 49: ... border around the Trig to X field is also green so that you can correlate the value in that field to the green Tx marker The time displayed in the Trig to X field is measured from the trigger point to the Tx marker The trigger point is shown as a vertical dotted red line at the center of the waveform display when Delay equals zero The trigger point is always time 0 When you select the Trig to X f...

Page 50: ...label field is the dark blue field to the left of the waveform display When you turn time markers on with voltage markers off the voltage values where the Tx and To markers intersect each waveform are displayed under each channel label When you touch the Trig to X field and turn the knob the Tx marker green will move across the display As you move the marker the time value in the Trig to X field c...

Page 51: ...and or time are turned on the current marker settings may be displayed on the channel trigger display and auto measure menus by using the Display Options field located to the right of the time base Delay field The Display Options field provides a pop up menu that allows you to either select to set channel labels or to view the Sample Period display or the Marker Value display The Marker Value disp...

Page 52: ...as the peak to peak voltage value The oscilloscope determines the top and base voltages by finding the flattest portions of the top and bottom of the waveform The top and base values do not typically include preshoot or overshoot of the waveform The peak to peak voltage is the difference between the minimum and maximum voltages found on the waveform If the signal is clipped the time markers will n...

Page 53: ...cilloscope boards are installed in the mainframe and in which slots they are installed The default selection for the Set on field is the lowest letter and number combination For example if oscilloscope boards are installed in mainframe slots C and D the Set on field will default to C1 for both the Tx and To markers Type Field The Type field selects the units in which an automatic time marker level...

Page 54: ...d sets the Tx or To marker to the specific voltage level The allowable voltage range that can be selected is the vertical range for the selected channel that is offset 2 times V div You can change the voltage level by either turning the knob or by entering a value from the pop up keypad The keypad appears when you touch the at Level field when the field is light blue You can enter any voltage from...

Page 55: ... the way from the 1st edge up to the 100th edge The count of edge occurrences is made starting with the first edge displayed on the screen Auto marker measurements are made with data that is displayed on the screen Make sure the data of interest is fully displayed on the screen When the Occur field is selected you can change the occurrence by turning the knob or by entering a new value from the po...

Page 56: ...ed and displayed until one of the following happens Auto is deselected as the T Marker option Auto marker parameters are changed Statistics is set to Off Run Repetitive mode is stopped Off When Statistics is set to Off the Tx to To Trig to X and Trig to O fields appear next to the Markers field on the Marker menu The marker statistics minimum maximum and mean are reset to zero only when you touch ...

Page 57: ...lue field default value is 0 s When you select the time value field you can enter the time by turning the knob or by entering a value from the pop up keypad The keypad appears when you touch the time value field when the field is light blue For keypad entries resolution is 10 ps at times up to 99 99 ns and can be set to 5 digit resolution for other times up to 100 Ms Positive times are used when t...

Page 58: ...in turn and enter the time value in the same manner as for the Less Than field When you select In Range the oscilloscope runs until the Tx To time interval is in the range of the time values entered for the In Range time fields When the condition is met the oscilloscope stops making acquisitions and displays the message Stop condition satisfied Not In Range Field When you select this field from th...

Page 59: ... the waveform display Now when you touch the T Markers field again and select On from the pop up menu the marker you selected with the MANUAL field is set to the manual mode and the other marker is set to fall on the parameters you set while in the automatic mode Example While in Auto markers mode set the conditions to Tx X1 positive slope occur 1 To MANUAL Now set the T Marker Mode to On and Run ...

Page 60: ...ese fields allow you to position the Va marker and the Vb marker by entering channel numbers and voltage levels for these markers If you turn the voltage markers on while the time markers are also turned on the voltage levels that correspond to the time marker waveform crossings will be deleted from the channel label field If you turn the voltage markers off while the time markers are turned on th...

Page 61: ...rm in the waveform area of the screen only the uppermost occurrence of the waveform will display the Va marker Overlay and waveform math traces cannot be selected for voltage marker placement Va Volts Field The Va marker is shown on the waveform display as a horizontal dashed green line The border around the Va Volts field is also green so you can more easily correlate the value in this field to t...

Page 62: ...veform in the waveform area of the screen only the uppermost occurrence of the waveform will display the Vb marker Overlay and waveform math traces cannot be selected for voltage marker placement Vb Volts Field The Vb marker is shown on the waveform display as a horizontal dashed yellow line The border around the Vb Volts field is also yellow so you can more easily correlate the value in this fiel...

Page 63: ...screen function If time markers are turned off the only marker choice available on the Center screen pop up will be the trigger marker If time markers are turned on the Tx and To markers will also appear in the Center Screen pop up menu If the auto time markers are enabled only the trigger marker appears in the Center Screen pop up menu Selecting one of the possible time markers for centering the ...

Page 64: ...d display or the Marker Value display The Marker Value display consists of two blocks One contains settings for the voltage markers the second contains settings for the time markers If only one set of markers is turned on only one of the two blocks will appear on the screen On the marker menu if time markers are turned off the Sample Period display will appear on the Marker menu If time markers ar...

Page 65: ...6 The Trigger Menu ...

Page 66: ...s in the Trigger menu The Mode field allows you to select the method you want to use to trigger the oscilloscope for a particular application When you touch the Mode field a pop up menu appears showing the three modes that are available Edge Pattern Immediate This chapter explains what the trigger marker is how to access the different trigger modes and what each trigger mode does The default selec...

Page 67: ...Trigger Field Menu Map The Trigger Menu 6 3 ...

Page 68: ...orm display The point where the waveform from the trigger source crosses the trigger marker is called the trigger point The trigger point always represents a delay time of zero seconds If you set delay time to greater than 5 times the sweep speed the trigger marker will move off the screen 6 4 ...

Page 69: ... multi card configuration Edge triggering is the type of triggering found in all oscilloscopes In the edge trigger mode the oscilloscope triggers at a specified voltage level on a rising or falling edge of one of the input channels or the external trigger input In this mode you can specify which input is the trigger source set a trigger level voltage except for Ext which is set to 1 3 V and specif...

Page 70: ...ard The source can be input X1 X2 or Ext where X equals the oscilloscope slot letter and Ext equals an ECL level external trigger When you have two or more HP 16533 34A modules connected together you can only specify the channels on the master HP 16533 34A module as the trigger source At power up the default channel input selection for the Source field is channel 1 The Trigger Menu Source Field 6 ...

Page 71: ...ne called the trigger marker At zero delay time the trigger marker is located at the horizontal center of the screen At delay time Td the trigger point is offset left positive delay or right negative delay from the horizontal center of the screen by time Td When you change the trigger level voltage value the waveform moves horizontally on the display to maintain the trigger point That is the point...

Page 72: ...ered that are not in this range will be rounded to the nearest 0 05 increment Since the trigger level range is limited by the voltage values displayed in the waveform window the voltage window limits can be easily determined Turn the knob in both directions until the Level field reads minimum and maximum voltage These voltage values are the limits of the waveform window However if the level is set...

Page 73: ...unt field on the waveform The Count field defines the number of trigger events that must occur after the first trigger qualifier before the oscilloscope will trigger and acquire a waveform Count can be set to any integer from 1 to 32 000 When the Count field is selected the trigger events count can be changed by turning the knob or by entering a value from the pop up keypad This type of triggering...

Page 74: ...g conditions occurs No signal is on the input In this case the oscilloscope will display a baseline There is a signal but the specified trigger condition has not been met In this case the waveform display will not be synchronized to a trigger point Off When you set auto trigger to Off the oscilloscope waits until a trigger is received before the waveform display is updated If a trigger does not oc...

Page 75: ...gle card module or in the master card in a multi card module Pattern trigger mode allows you to trigger the oscilloscope upon entering or exiting a specified pattern of the trigger channels and the external trigger input or by specifying a pattern duration or range When you have two or more HP 16533 34A modules connected together you can only specify the channels on the master HP 16533 34A module ...

Page 76: ...evels sets the threshold of each input for high and low levels in the pattern The trigger level marker does not appear when Pattern mode triggering is selected The pattern for each input may be specified as high H low L or don t care X H L and X conditions are as follows H the voltage value of this input channel must be greater than the edge trigger level of this input L the voltage level of this ...

Page 77: ...sed to specify the trigger when condition for pattern triggering Once a selection has been made you touch the Done field to exit the pop up menu and return to the trigger menu The trigger condition selected will now appear in the When field The default selection for the When field is When Entered When Entered When this field is active the oscilloscope triggers on the first transition that makes th...

Page 78: ... specification can be of any duration and each such pattern event will contribute to meeting the count specification Example With a pattern specification of HXX a duration specification of 100 ns and a count of 3 a pulse string with pulse widths 80 ns 150 ns 50 ns 75 ns 20 ns 200 ns would trigger on the trailing edge of the 75 ns pulse In this example the 150 ns pulse meets the duration specificat...

Page 79: ...ern has been true for greater than the first time value and less than the second time value that make up the pattern duration range If the pattern specification remains true for longer than the maximum duration range limit or becomes false before the minimum duration range limit the search for a trigger condition starts again the next time the pattern specification becomes true If the pattern spec...

Page 80: ...you can define a pattern as a trigger qualifier When the oscilloscope detects the trigger qualifier it will trigger when a user specified number of patterns have occurred Count field on all inputs The Count field defines the number of events that must occur after the first trigger qualifier before the oscilloscope will trigger and acquire a waveform Count can be set to any integer from 1 to 32 000...

Page 81: ...e specified pattern condition has not been met In this case the waveform display is not synchronized to a trigger point Off When you set auto trigger to Off the oscilloscope waits until a trigger is received before the waveform display is updated If a trigger does not occur the screen is not updated and the message Waiting for Trigger is displayed Use this mode when The trigger source signal has l...

Page 82: ...in the master card in a multi card module Immediate trigger mode causes the oscilloscope to trigger by itself When you touch the Mode field Immediate can be selected from the pop up menu Immediate trigger mode can be used for dual timebase intermodule applications where for instance one oscilloscope module arms another oscilloscope module or another module such as a logic analyzer arms the oscillo...

Page 83: ...alyzer and display data from several modules on one display If you set the oscilloscope module to Independent in the Intermodule Menu the oscilloscope will be in the free run mode and the waveform display will not be synchronized with the other measurement modules in your system Pattern duration trigger cannot be used when the oscilloscope is armed by another module or by BNC PORT IN as set up on ...

Page 84: ...6 20 ...

Page 85: ...7 The Display Menu ...

Page 86: ... the following modes Normal Average Accumulate The Display options also control the connect the dots display and grid display features Display Menu Map The menu map on the next page illustrates all fields and the available options in the Display menu The menu map will help you get an overview as well as provide you with a quick reference of what the Display menu contains 7 2 ...

Page 87: ...Display Field Menu Map The Display Menu 7 3 ...

Page 88: ...e averages the most recently acquired data points on a waveform with previously acquired data Averaging helps eliminate random noise from your displayed waveforms When you select Average mode a new field appears next to the Mode field which allows you to select the number of waveform acquisitions to average When you touch the Average field the field will turn a light blue color When the field is l...

Page 89: ...ted waveforms bring those other waveforms into the display of the oscilloscope that is setup for average mode only oscilloscope signals acquired by that oscilloscope will be averaged on the display Panning or zooming an averaged waveform causes the waveform to redraw with only the most recent acquisition on the display Accumulate Mode In Accumulate mode the oscilloscope accumulates all waveform ac...

Page 90: ...single dot To give you a better idea of what the waveform looks like the oscilloscope has a feature that connects the sample dots together Touching the Connect Dots field will toggle the field between On and Off On With Connect Dots On each displayed sample is connected to the adjacent sample The waveform displayed with Connect Dots set to On is better defined and easier to see Off With Connect Do...

Page 91: ...cumulate mode the grid can be turned on at any time but it will not be drawn until the next acquisition is completed or some change is made to the display screen that would cause the display to be erased and redrawn that is s div etc Off Touching the Grid field when it reads On will toggle the field to Off and will remove the grid pattern from the screen In either Normal or Average modes the grid ...

Page 92: ...Channel Trigger Display and Auto Measure menus The number of selections that appear when you touch the Display Options field will vary depending on whether or not any of the markers are enabled If no markers are enabled the oscilloscope menus will always display sample period information and touching the Display Options field will yield a single possible selection Set Channel Labels If either volt...

Page 93: ...y oscilloscope channels you don t label will retain their default label cardslot and input number To erase all scope channel labels for the oscilloscope and return to the default oscilloscope channel labels simply touch the Default field on the Scope Channel Labels menu Display Sample Period Selecting the Display Sample Period option will cause the sample period information see Sample Period Displ...

Page 94: ...7 10 ...

Page 95: ...8 The Auto Measure Menu ...

Page 96: ...hing the menu field top row second from the left then by selecting Auto Measure from the pop up menu that appears There are nine automatic measurements available in the automatic measurement menu Period Risetime Falltime Frequency Width Width Vp_p Preshoot Overshoot Auto Measure Menu Map The menu map on the next page illustrates all fields and the available options in the Auto Measure menu The men...

Page 97: ...Auto Measure Menu Map The Auto Measure Menu 8 3 ...

Page 98: ...ut pop up menu are dependent upon how many cards are part of the oscilloscope module and in which slots they are installed The default selection for the Input field is the lowest lettered and numbered input channel of the module Automatic Measurements Display The tan colored field in the middle row of the menu is called the automatic measurements display This display shows the nine automatic measu...

Page 99: ...rm with at least two like edges must be displayed for Period and Freq measurements A complete positive pulse must be displayed to make a Width measurement A complete negative pulse must be displayed to make a Width measurement The leading rising edge of the waveform must be displayed for Risetime and rising edge Preshoot and Overshoot measurements The trailing falling edge of the waveform must be ...

Page 100: ... oscilloscope first determines the top 100 and base 0 voltages of the waveform From this information it can determine the other important voltage values 10 voltage 90 voltage and 50 voltage required to make the measurements The 10 and 90 voltage values are used in the rise time and fall time measurements The 50 voltage value is used for measuring frequency period and pulse width The Auto Measure M...

Page 101: ...uantization level of the 500 displayed points on the displayed waveform The quantization level with the greatest number of occurrences in the top half of the waveform corresponds to the Vtop level The quantization level with the greatest number of occurrences in the bottom half of the waveform corresponds to the Vbase level If Vtop and Vbase do not contain at least 5 of the 500 data points display...

Page 102: ... The period is measured at the 50 voltage level of the waveform If the first edge on the display is rising then Period t rising edge 2 t rising edge 1 If the first edge on the display is falling then Period t falling edge 2 t falling edge 1 Peak to Peak Voltage Vp_p The maximum and minimum voltages for the selected source are measured Vp_p V maximum V minimum where Vmaximum and Vminimum are the ma...

Page 103: ...ls If the first edge on the display is rising then Width trising edge 2 tfalling edge1 If the first edge on the display is falling then Width trising edge 1 tfalling edge1 Rise time The rise time of the first displayed rising edge is measured To obtain the best possible measurement accuracy set the sweep speed as fast as possible while leaving the full leading edge of the waveform on the display T...

Page 104: ...st be displayed If you want to measure preshoot and overshoot on one edge of a waveform then only display that edge If you want to measure the maximum preshoot and overshoot on a waveform then display several cycles of the waveform Preshoot is a perturbation before a rising or a falling edge and is measured as a percentage of the top base voltage Overshoot is a perturbation after a rising or a fal...

Page 105: ...9 The Waveform Selection Menu ...

Page 106: ...l and choose channel modes It also lets you select to view a waveform from another module when you are making intermodule measurements The oscilloscope module has the capability to display 96 waveforms eight at any one time When you have made more than eight waveforms accessible for display some of them will not be in the waveform display area To display them you touch the dark blue channel label ...

Page 107: ...Waveform Selection Menu Map The Waveform Selection Menu 9 3 ...

Page 108: ... the Module field the name of the modules you are running as part of the intermodule measurement will be displayed as options in the pop up menu The input labels for the module that you select from the pop up menu will appear in the Labels field Using the Action options Replace and Insert and the Delete option you can select the input or inputs you wish to view and where you wish to place them on ...

Page 109: ...nnel in each waveform display area for which it is selected It is the default mode for the oscilloscope module This mode is also the only one that displays voltage markers Overlay Mode This is a waveform mode that lets you take the signal from one channel input and compare it to the signal from another or several other channel input It lets you put multiple waveforms on the same waveform display a...

Page 110: ...he module are then displayed in the top channel label field After you have touched the Done key in the pop up you may need to touch the s Div field and change the sweep speed in order to more easily see differences in the overlaid waveforms Input 1 will now be overlaid on Input 2 in the waveform display area No voltage values for the overlaid waveforms will appear in the channel label field to the...

Page 111: ...s highlighted in white Then touch the Action field until Insert is displayed Touch the Input 1 label in the Labels field then touch Input 2 in the Labels field Input 1 and Input 2 waveforms shown as X1 X2 where X is the slot letter of the module are then displayed in the channel label field Now touch the Done key in the pop up to display the waveform The display now shows input 2 added to input 1 ...

Page 112: ...ld is highlighted in white Then touch the Action field until Insert is displayed Next touch the Input 1 label in the Labels field then touch Input 2 in the Labels field Input 1 and Input 2 waveforms shown as X1 X2 where X is the slot letter of the module are then displayed in the channel label field Touch the Done key in the pop up to display the waveform The display now shows input 2 subtracted f...

Page 113: ...channel in the channel label field is highlighted in white The channel highlighted in white is the channel that will be replaced You replace the channel highlighted in white with the channel you touch in the Labels field Inserting a Channel Inserting an input channel works similar to replacing a channel Touching the Action field in the Waveform Selection pop up causes the Action field to toggle be...

Page 114: ...m Selection pop up menu lets you delete channel inputs from the waveform display area Deleting a Channel You use the knob to highlight the input channel in the channel label field that you want to delete You then touch the Delete field in the Waveform Selection pop up to delete the highlighted channel input from the channel label field and hence from the waveform display area The input channel hig...

Page 115: ...s the largest font either small medium or large that allows all waveforms to be displayed Small The small font will allow 24 waveforms to be displayed Medium The medium font will allow 16 waveforms to be displayed Large The large font will allow 8 waveforms to be displayed Done Field When you are finished making all of your selections in the Waveform Selection pop up menu you touch the Done field ...

Page 116: ...9 12 ...

Page 117: ...10 Specifications and Characteristics ...

Page 118: ...are the performance standard against which the product is tested The characteristics are not specifications but are included as additional information For complete information on the test procedures used to verify product performance refer to the optional Service Guide available through your HP Sales Office 10 2 ...

Page 119: ...y setting 100 ps DC Offset Accuracy 1 0 of channel offset 2 0 of full scale Voltage Measurement Accuracy 1 25 of full scale offset accuracy 0 016 V div Trigger Sensitivity 10mV 10V div 4mV div dc to 50 MHz 0 25 div 0 63 div 50 MHz to 250 MHz HP 16533A 0 50 div 1 25 div 50 MHz to 500 MHz HP 16534A 0 50 div 1 25 div Input R 1 MΩ 1 50 Ω 1 Specifications valid within 10 C of self calibration temperatu...

Page 120: ...els at equal sensitivity dc to 50 MHz 40 dB 50 MHz to 250 MHz HP 16533A 30 dB 50 MHz to 500 MHz HP 16534A 30 dB Number of Channels 2 4 6 8 simultaneous channels using the same trigger OR up to 10 with independent triggers for each pair of channels Maximum of 20 channels with HP 16501A expansion frame Rise Time 1 4 ns HP 16533A and 700 ps HP 16534A Vertical dc Gain Accuracy 1 25 of full scale Input...

Page 121: ...rming condition is met Edge Triggers on rising or falling edge from channel 1 or channel 2 Pattern Triggers on entering or exiting a specified pattern across two channels Auto Trigger Self triggers if no trigger condition is found within approximately 50 ms after arming Events Delay The trigger can be set to occur on the nth edge or pattern as specified by the user Intermodule Arms another measure...

Page 122: ...s Display Formats Waveforms can be displayed in an overlapping and or non overlapping format Display capability of A B and A B is also provided Display Resolution 500 points horizontal 240 points vertical Display Modes Normal Single New acquisition replaces old acquisition on screen Accumulate New acquisition is displayed in addition to previous acquisitions until screen is erased Average New acqu...

Page 123: ...y specifying percentage of edge edge number and rising or falling edge type run until X to O than than in range and not in range provides selective event search X to O statistics mean max and min provide analysis of time interval deviation Voltage Markers Two horizontal markers A and B are provided for voltage measurements These markers can each be placed on any acquisition channel trace A delta v...

Page 124: ...tical and horizontal ranges offset and trigger level to display the input signals Requires a frequency between 50 Hz and 250 MHz Presets Scales the vertical range offset and trigger level to predetermined values for displaying ECL or TTL waveforms Calibration Vertical trigger delay and all defaults Calibration factors stored in NV RAM on the circuit board Probe Compensation Source External BNC sup...

Page 125: ...11 Installation and Operator s Service ...

Page 126: ...nvironment The oscilloscope module s reliability is enhanced when operating the module within the following ranges Temperature 20 C to 35 C 68 F to 95 F Humidity 20 to 80 noncondensing Storage Store or ship the oscilloscope in environments within the following limits Temperature 40 C to 75 C Humidity Up to 90 at 65 C Altitude Up to 15 300 meters 50 000 feet Protect the module from temperature extr...

Page 127: ... TI O N Turn off the mainframe power before removing replacing or installing the module C AU TI O N Electrostatic discharge can damage electronic components Use grounded wrist straps and mats when performing any service to this module 1 Turn off the mainframe power switch then unplug the power cord Disconnect any input or output connections 2 Plan your module configuration If you are installing a ...

Page 128: ...ese cards out together to prevent damage to the cables and connectors 5 Remove the cards and filler panels Remove the cards or filler panels that are in the slots intended for the module installation Push all other cards into the card cage but not completely in This is to get them out of the way for installing the module Some modules for the Logic Analysis System require calibration if you move th...

Page 129: ...gger The only requirements to configure a multi card module are using more than one HP 16533 34A card and interfacing the cards with master expander trigger cables before applying power to the HP 16500B C Logic Analysis System mainframe Note that if an HP 16530 card is in the mainframe the HP 16534 must be located above the HP 16530 for proper operation All cards in a multi card module must be the...

Page 130: ...e mainframe 2 Slide the HP 16533 34A module approximately halfway into the mainframe If a multi card module is being configured all HP 16533 34A cards must be in adjacent slots 3 Position all cards and filler panels so that the endplates overlap Installation and Operator s Service To configure the HP 16533 34A module 11 6 ...

Page 131: ...rument from overheating Keep any extra filler panels for future use 5 To configure a multi card module use the master expander trigger cable included with the accessory kit of each HP 16533 34A card Starting with the top most HP 16533 34A card connect the ECL EXT TRIG OUT to the ECL EXT TRIG IN of the card immediately below Repeat for all cards in the module Installation and Operator s Service To ...

Page 132: ...nnel to channel variations go to Calibrating and Adjusting found later in this chapter If you require a test to initially accept the operation perform the self tests in chapter 3 of the optional Service Guide The Service Guide can be ordered through your HP Sales Office If you require a test to verify the specifications start at the beginning of the Testing Performance chapter in the optional Serv...

Page 133: ...ntervals or every 1 000 hours if the ambient temperature changes more than 10 C from the temperature at full calibration to optimize measurement accuracy To test the oscilloscope circuitry against specifications refer to Testing Performance in chapter 3 of the Service Guide Multi card oscilloscope calibration A complete operational accuracy calibration on an HP 16533 34A multi card module requires...

Page 134: ...ion PROTECT UNPROTECT switch This switch must be set to UNPROTECT before new calibration values from the operational accuracy calibration can be stored to nonvolatile RAM HP 16533 34A multi card modules must be separated into single card modules before performing the operational accuracy calibration on the acquisition circuitry 1 Remove power from the HP 16500 mainframe If a multi card module is b...

Page 135: ...TECT UNPROTECT switch on all cards must be set to UNPROTECT 4 Reinstall the modules and filler panels 5 Apply power to the HP 16500 mainframe Allow the HP 16533 34A module to warm up approximately 30 minutes before doing the following steps in the self calibration Installation and Operator s Service Set up the equipment 11 11 ...

Page 136: ...be calibrated b Touch the Menu field then at the pop up menu touch Calibration c Touch the Mode field then at the pop up menu touch Service Cal d Touch the Procedure field then at the pop up menu touch Default Values e Touch the Start field then follow the instructions on the display Messages will be displayed as each operational accuracy calibration routine is completed to indicate calibration ha...

Page 137: ...strument will prompt you to connect the cable to the appropriate location on the rear panel of the instrument b Touch the Procedure field then touch Delay from the pop up menu c Touch the Channel field then select channel 1 d Touch the Start field and follow the instructions on the display e Repeat steps c and d for channel 2 f After completing all of the channel delay calibrations remove the cabl...

Page 138: ...ouch Scope Touch Channel then touch Calibration 6 Calibrate the Time Null of the Self Cal a Connect two BNC 50 Ω 9 inch cables to the BNC tee adapter Once you touch Start the instrument will prompt you to connect the cables to the appropriate locations on the rear panel of the instrument b Touch the Procedure field then touch Time Null from the pop up menu c Touch the Start field and follow the in...

Page 139: ...ar panel of the instrument b Touch the Procedure field then touch Ext Trig Null from the pop up menu c Touch the Start field and follow the instructions on the display d After completion of External Trigger Null Calibration remove the cables from the instrument Protect the operational accuracy calibration factors 1 Remove power from the instrument Pull out halfway all cards and filler panels locat...

Page 140: ...11 16 ...

Page 141: ...oltage value 5 10 automatic manual markers setting 5 17 autoscale 2 2 algorithm 2 4 to 2 5 cancel 2 3 continue 2 2 to 2 3 displaying the waveform 2 5 finding the time base settings 2 4 finding the vertical settings 2 4 settings changed by 2 6 trigger point location 2 5 when a signal cannot be found 2 5 autoscale field options 2 3 autoscale run 1 3 Average display mode See Display Mode B base and t...

Page 142: ... voltage Va Volts field 5 19 voltage Vb On field 5 20 voltage Vb Volts field 5 20 markers automatic at Level field 5 12 Done field 5 11 Occur field 5 13 Run Until Time X O field 5 15 to 5 16 set on field 5 11 Slope field 5 13 Statistics field 5 14 Statistics field default 5 14 type absolute 5 12 type field 5 11 type percent 5 12 maximum time interval measurements 5 14 mean time interval measuremen...

Page 143: ...oming 4 4 Single Run 1 3 to 1 4 Slope field 6 9 Source field 6 6 Statistics field 5 14 stop field 1 4 Stop Run options 1 2 sweep speed 4 3 4 8 selecting 4 3 sequence 4 3 T Test 11 8 time base functions 4 2 time difference See Tx to To time field time marker value display 5 9 To marker dashed yellow line 5 8 Trig to O field 5 8 top and base voltages 8 7 Trig to O field 5 8 to 5 9 yellow border 5 8 ...

Page 144: ...nchronized 6 8 6 10 viewing the entire record 4 7 waveform math adding channels 9 7 subtracting channels 9 8 waveform size field 9 11 When field 6 13 to 6 15 X X marker Trig to X field 5 7 Y yellow line To marker 5 8 Z zooming 4 4 Index Index 4 ...

Page 145: ... making an oscilloscope run for any reason once you have touched the Run field card A single HP 16533A or HP 16534A unit coupling field The field that sets the input impedance for the signal applied to channel 1 or channel 2 of the oscilloscope Selectable values for each channel are 1MΩ DC 1MΩ AC and 50Ω DC delay field The field that sets the horizontal position of the waveform on the screen Delay...

Page 146: ...t corner of the screen It allows you to choose any of the mod ules in the mainframe as your working module It also allows you to choose system options and inter module options offset field The field that sets the vertical position of the waveform on the screen Offset is the voltage rep resented at the center vertical tick mark in the waveform display It is measured in volts and is viewed in the Of...

Page 147: ...ggles to another op tion a pop up menu appears or the field turns light blue to activate the knob for that field trigger point The point at which the voltage on the signal source in put waveform equals the trigger level voltage value set in the Level field of the trigger menu vertical sensitivity The voltage value that determines the amplitude of the waveform on the screen It is measured in volts ...

Page 148: ...Glossary 4 ...

Page 149: ...re for trained service personnel To avoid dangerous electric shock do not perform any service unless qualified to do so Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present If you energize this instrument by an auto transformer for voltage reduction make sure the common terminal is connected to the earth terminal of the pow...

Page 150: ...e ed d o or r i im mp pl li ie ed d H He ew wl le et tt t P Pac ack ka ar rd d s sp pe ec ci if fi ica cal ll ly y d di is sc cl la ai im ms s t th he e i im mp pl li ie ed d w wa ar rr ra an nt ti ie es s o or r m me er rc ch ha an nt ta ab bi il li it ty y a an nd d f fi it tn ne ess ss f fo or r a a p pa ar rt ti ic cu ul la ar r p pu ur rp po os se e Exclusive Remedies The remedies provided he...

Page 151: ... 2 1987 IEC 555 3 1982 A1 1990 EN 60555 3 1987 A1 1991 IEC 801 2 1991 EN 50082 1 1992 4 kV CD 8 kV AD IEC 801 3 1984 EN 50082 1 1992 3 V m 1kHz 80 AM 27 1000 MHz IEC 801 4 1988 EN 50082 1 1992 0 5 kV Sig Lines 1 kV Power Lines Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carries the CE mark...

Page 152: ...ISPR 11 ISM Group 1 Class A equipment Immunity EN50082 1 Code1 Notes2 IEC 555 2 IEC 555 3 IEC 801 2 ESD 4kV CD 8kV AD IEC 801 3 Rad 3 V m IEC 801 4 EFT 0 5 kV 1kV 1 1 1 1 1 1 Performance Codes 1 PASS Normal operation no effect 2 PASS Temporary degradation self recoverable 3 PASS Temporary degradation operator intervention required 4 FAIL Not recoverable component damage 2 Notes none Sound Pressure...

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