BK Precision 2560B Series User Manual
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BK Precision 2560B Series User Manual

Digital storage and mixed signal oscilloscopes
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Summary of Contents for BK Precision 2560B Series

  • Page 2 Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be followed during all phases of operation, service, and repair of this instrument. Before applying power to this instrument: • Read and understand the safety and operational information in this manual. •...
  • Page 3 Electrical Power This instrument is intended to be powered from a CATEGORY II mains power environment. The mains power should be 115 V RMS or 230 V RMS. Use only the power cord supplied with the instrument and ensure it is appropriate for your country of use.
  • Page 4 Do not operate instrument if damaged If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on or inside the instrument, remove the instrument’s power cord, remove the instrument from service, label it as not to be operated, and return the instrument to B&K Precision for repair.
  • Page 5 Servicing Do not substitute parts that are not approved by B&K Precision or modify this instrument. Return the instrument to B&K Precision for service and repair to ensure that safety and performance features are maintained. For continued safe use of the instrument •...
  • Page 6 Compliance Statements Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) This product is subject to Directive 2002/96/EC of the European Parliament and the Council of the European Union on waste electrical and electronic equipment (WEEE), and in jurisdictions adopting that Directive, is marked as being put on the market after August 13, 2005, and should not be disposed of as unsorted municipal waste.

  • Page 7: Table Of Contents

    Contents General Information Product Overview Features Contents Dimensions Front Panel Overview Rear Panel Overview Touch Screen Overview Getting Started Input Power Requirements Fuse Requirements and Replacement Preliminary Check 2.3.1 Verify AC Input Voltage 2.3.2 Connect Power 2.3.3 Self-Test 2.3.4 Self-Cal 2.3.5 Check Model and Firmware Version 2.3.6...
  • Page 8 Vertical Control Enabling Channels 7.1.1 Channel Enable/Disable From the Touch Screen Vertical Scale 7.2.1 Coarse/Fine Adjustment Vertical Position Channel Setup 7.4.1 Channel Coupling 7.4.2 Bandwidth Limit 7.4.3 Probe Attenuation 7.4.4 Label 7.4.5 Apply To 7.4.6 Impedance 7.4.7 Unit 7.4.8 Deskew 7.4.9 Invert 7.4.10...
  • Page 9 10.2.3 SPI Serial Decode 10.3 UART Trigger and Serial Decode 10.3.1 Setup for UART Signals 10.3.2 UART Trigger 10.3.3 UART Serial Decode 10.4 CAN Trigger and Serial Decode 10.4.1 Setup for CAN Signals 10.4.2 CAN Trigger 10.4.1 CAN Serial Decode 10.5 LIN Trigger and Serial Decode 10.5.1...
  • Page 10 13 Math 13.1 Units for Math Waveforms 13.2 Arithmetic 13.2.1 Subtraction Example 13.2.2 Average 13.2.3 ERES 13.3 Algebra 13.3.1 Differentiate 13.3.2 Integrate 13.3.3 Square Root 13.3.4 Absolute 13.3.5 Sign 13.3.6 Exp/Exp10 13.3.7 Ln/Lg 13.3.8 Interpolate 13.4 Frequency Analysis (FFT Operation) 13.4.1 Setting FFT Parameters 13.4.2...
  • Page 11 19.2.4 Input Setup 19.3 Inrush Current 19.3.1 Input Setup 19.4 Switching Loss 19.4.1 Deskew Calibration 19.4.2 Switching Loss Configuration 19.4.3 Conduction Type 19.4.4 Input Setup 19.5 Slew Rate 19.5.1 Connection Guide 19.6 Modulation 19.6.1 Input Modulation 19.7 Output Ripple 19.7.1 Output Ripple Input Setup 19.8 Turn on/Turn Off...
  • Page 12 23.8 Start Self Cal 23.9 Power On Line 24 Remote Control 24.1 Web Browser 24.2 Other Connectivity 25 Troubleshooting 26 Service Information 27 LIMITED THREE-YEAR WARRANTY...

  • Page 13: General Information

    General Information 1.1 Product Overview Figure 1.1 2560B The 2560B Digital Storage (DSO) and Mixed Signal Oscilloscope (MSO) Series delivers advanced features and debug capabilities for a wide range of applications. With increasing bandwidths to 350 MHz in a 4-channel configuration, each model offers a maximum sample rate of 2 GSa/s and a maximum memory depth of 200 Mpts.

  • Page 14: Features

    General Information 1.2 Features • 4 Analog channels • Maximum sampling rate of 2 GSa/s • 200 Mpts. memory depth • Maximum waveform update rates of 120,000 (normal mode) and 500,000 (sequence mode) • History and sequence mode store a maximum of 90,000 frames •...

  • Page 15: Contents

    Ensure the presence of all the items above. Contact the distributor if any items are missing. 1.4 Dimensions The 2560B series oscilloscope’s dimensions are approximately: 352 mm (13.9 in) x 224.00 mm (8.8 in) x 101 mm (4 in) (W x H x D).

  • Page 16: Front Panel Overview

    General Information 1.5 Front Panel Overview The front panel interface allows for control of the unit. Figure 1.3 Front Panel Item Name Description Visual presentation of the device function and measurements. Touch Screen See section Touch Screen Display for more details. Control Panel Includes control knobs and keys.

  • Page 17: Rear Panel Overview

    General Information 1.6 Rear Panel Overview Figure 1.4 Rear Panel Overview Item Name Description Outputs the trigger indicator. When Pass / Fail is enabled, outputs the Auxiliary Out pass / fail signal. The external trigger input can be used as a source in several of the trig- External Trigger Input ger types.

  • Page 18: Touch Screen Overview

    General Information 1.7 Touch Screen Overview Use your fingers to touch, drag, pinch, spread, or draw a selection box. Figure 1.5 Touch Screen Overview Item Name Description Menu Bar Displays the available options in the selected menu. Trigger Delay Displays the trigger status. Indicator Trigger Status Displays the trigger status.

  • Page 19: Getting Started

    Getting Started Before connecting and powering up the instrument, review the instructions in this section. 2.1 Input Power Requirements The oscilloscope has a universal AC input that accepts line voltage and frequency input within: Line Voltage Range 100-120 V 100-240 V Frequency 400 Hz 50/60 Hz...

  • Page 20: Fuse Requirements And Replacement

    Getting Started 2.2 Fuse Requirements and Replacement For continued fire protection at all line voltages replace only with a 2.00 A / 250 V "T" RATED, 5 x 20 mm fuse. For safety, no power should be applied to the instrument while changing line voltage operation.

  • Page 21: Preliminary Check

    Getting Started 2.3 Preliminary Check Complete the following steps to verify that the oscilloscope is ready for use. 2.3.1 Verify AC Input Voltage Verify proper AC voltages are available to power the instrument. The AC voltage range must meet the acceptable specification stated in section Input Power Requirements.

  • Page 22: Function Check

    Getting Started 2.3.6 Function Check Follow the steps below to do a quick check of the oscilloscope’s functionality. 1. Power on the oscilloscope. Press "Default Setup" to show the result of the self-check. – The probe default attenuation is 1X. 2.

  • Page 23: Probe Safety

    Getting Started 2.4 Probe Safety A guard around the probe body provides a finger barrier for protection from electric shock. Figure 2.4 Probe Connect the probe to the oscilloscope and connect the ground terminal to the ground before you take any measurements. Shock Hazard: To avoid electric shock when using the probe, keep fingers behind the guard on the probe body.
  • Page 24 Getting Started Probe Attenuation Probes are available with various attenuation factors which affect the vertical scale of the signal. The Probe Check function verifies that the probe attenuation option matches the attenuation of the probe. Press CH 1 once to open the channel menu. Select the probe option that matches the attenuation of the probe. Note: The default setting for the Probe option is 1 X.

  • Page 25: Control Panel

    Control Panel The control panel is designed to operate the basic functions without having to open the software menu. Most of the front panel controls duplicate functionality available through the touch screen. All the knobs on the front panel are multifunctional. They can be pushed as well as rotated.

  • Page 26: Horizontal Control

    Control Panel 3.2 Horizontal Control Horizontal Scale Knob: Turn the knob to adjust the horizontal scale (time/div). The symbols above the knob indicate that this control has the effect of spreading out or zooming in on the waveform using the horizontal scale. Push the horizontal scale knob to toggle between fine and coarse adjustment.

  • Page 27: Run/Stop Key

    Control Panel Single: Sets the Trigger Mode to Single. In Single Mode data is a single frame that satisfies the trigger conditions is captured and displayed, and then stops. The following trigger events are ignored until Single acquisition is restarted. Level Knob: Turn the Level Knob to adjust the trigger level for a selected analog channel.

  • Page 28: Universal Knob

    Control Panel 3.7 Universal Knob The Universal Knob is used to select items from pop-up menus and to change values. The function of the Universal Knob changes based upon the current menu. Note that the curved arrow symbol below the knob illuminates whenever the Universal Knob can be used to select a value.

  • Page 29: Other Keys

    Control Panel 3.9 Other Keys Press the Measure key to access a set of predefined measurements. See section Measure for more details. Performs a screenshot save to an external storage device. The supported format includes .bmp .jpg .png Enables/Disables the touch screen. The LED on the button lights to indicate that the touch screen is working.

  • Page 30: Acquisition

    Acquisition 4.1 Changing Acquisition Mode To change the Acquisition Mode: • Use the touchscreen to press the Acquire Menu on the Main Timebase menu, or press the Acquire key on the control panel, or touch the Menu Bar and select Acquire > Menu to recall the Acquire menu on the right side. –...
  • Page 31 With 200 Mpts memory depth, the 2560B series can still run at full sample rate (2 GSa/s) even when set to the 10 ms/div timebase.

  • Page 32: Sequence

    If sequence mode is enabled, the display will not update until all of the sequences have been acquired. The 2560B series can achieve a minimum 2 s trigger interval in sequence mode, corresponding to a waveform update rate of 500,000 wfms/s.

  • Page 33: History

    History The history function can record the waveforms of the input channels before press the Run/Stop button. In run state, the oscilloscope records input waveform continually; when the memory is full (reach the maximal frame), the new frames will cover the old frames and keep the latest frames. The oscilloscope automatically stores acquired frames.

  • Page 34: Horizontal Control

    Horizontal Control The horizontal controls include: • Touchscreen controls for setting : – Horizontal scale and position (delay) – Accessing the Main Timebase menu. – Navigating • The horizontal scale and position knobs. • The Zoom key for quickly enabling/disabling the split-screen zoom display. •...

  • Page 35: Adjusting The Horizontal Delay (Position)

    Horizontal Control 6.2 Adjusting the Horizontal Delay (position) Figure 6.3 Horizontal Setup To adjust the horizontal delay (position): • Use the touchscreen horizontal drag gesture. • Use the touchscreen controls to open the Main Timebase dialog by pressing the timebase descriptor box. Figure 6.4 Timebase Descriptor Box –...

  • Page 36: Panning And Zooming Single Or Stopped Acquisitions

    Horizontal Control Changing the delay time moves the trigger point (solid inverted triangle ) horizontally and indicates how far it is from the time reference point (hollow inverted triangle ). These reference points are indicated along the top of the display grid.

  • Page 37: Zoom

    Horizontal Control 6.5 Zoom Zoom is a horizontally expanded version of the normal display. When Zoom is selected, the display divides into two windows. The top window covers about a third of the displays. This window displays the normal time/div window. The area of the normal display that is expanded is outlined with a box and the rest of the normal display is ghosted.

  • Page 38: Roll

    Horizontal Control 6.6 Roll Roll causes the waveform to move slowly across the screen from right to left. It only operates on the time bases settings of 50 ms/div and slower. If the current time base settings are faster than the 50 ms/div limit, it will be set to 50 ms/div when Roll mode is entered.

  • Page 39: Vertical Control

    Vertical Control The vertical controls include: • Touchscreen controls for setting: – Vertical scale and position (offset) – Accessing the Channel menus. • The vertical scale and position knobs for each analog channel. • The channel keys for turning a channel on or off. Figures shows the Channel 1 Menu that appears after pressing the 1 channel key.

  • Page 40: Vertical Scale

    Vertical Control 7.2 Vertical Scale The Vertical Scale Knob changes the analog channel scale in a 1-2-5 step sequence (with a 1:1 probe attached), unless Fine Adjustment is enabled. The analog channel’s vertical scale (Volts/div) value is displayed in the channel’s descriptor box.

  • Page 41: Channel Setup

    Vertical Control 7.4 Channel Setup Pressing the Channel key to open the corresponding channel menu. As shown in figures the following options can be configured: Impedance • Channel Coupling • Unit • BW Limit • Deskew • Probe • Invert •...

  • Page 42: Bandwidth Limit

    Vertical Control To set the channel coupling: 1. Press the desired channel key. 2. In the Channel Menu, use the touchscreen to press the Coupling option. – A drop-down menu will appear with all 3 coupling option. – Use the touchscreen to select the desired coupling. Note: Channel Coupling is independent of Trigger Coupling.

  • Page 43: Label

    Vertical Control 7.4.4 Label Customize the label text, of the selected source. The source can be C1 - C4, F1 or F2, and RefA - RefD. The length of the label is limited to 20 characters. The characters beyond this length will not be displayed. When the Display option is set to “on”, the label will be displayed on the right side of the channel offset indicator.

  • Page 44: Impedance

    Vertical Control 7.4.6 Impedance To change the impedance: 1. Press the desired channel key. 2. In the Channel Menu, use the touchscreen to select either 50 Ω or 1 MΩ. 1 MΩ: When a passive probe with high impedance is connected, the impedance must be set to 1 MΩ, otherwise the signal will not be detected.

  • Page 45: Invert

    Vertical Control 7.4.9 Invert When Invert is enabled, the waveform is displayed 180 degrees opposite to the earth potential. This is a mathematical inversion and does not physically change the actual potential of the input signal. Invert Of Invert On Figure 7.8 Invert 7.4.10 Trace When Visible is selected, the waveform is displayed.

  • Page 46: Digital Channels

    Digital Channels This chapter describes how to use the digital channels of a Mixed-Signal Oscilloscope (MSO). The digital channels are standard on the 2560B MSO models and the 2560B Series DSO models have the upgrade license option. 8.1 LP2560 Probe The LP2560 is a logic probe designed to monitor up to 16 digital signals at once.

  • Page 47: Connecting The Digital Probes

    Digital Channels 8.2 Connecting the Digital Probes 1. If necessary , turn off the power supply to the device under test. – Turning off power to the device under test only prevents damage that might occur if two lines are accidentally shorted when connecting the probes.

  • Page 48: Displaying Digital Channels

    Digital Channels Figure 8.3 Digital Channels 8.4 Displaying Digital Channels When signals are connected to the digital channels ensure to connect the ground leads. Autoscale configures and displays the digital channels. To modify the position and height of the digital channels: 1.

  • Page 49: Turning Individual Channels On Or Off

    Digital Channels 8.5 Turning Individual Channels On or Off Individual or multiple channels can be turned On or Off in the Channel Setting menu. To access the Channel Setting menu: 1. Press the Digital key to open the Digital menu. 2.

  • Page 50: Logic Threshold For Digital Channels

    Digital Channels 8.6 Logic Threshold for Digital Channels The threshold level determines how the input signal is evaluated. The threshold level can be set in the Logic Setting. The threshold you set applies to all channels within the selected D7 - D0 or D15 - D8 group. Each of the two channel groups can be set to a different threshold if desired.
  • Page 51 Digital Channels Figure 8.9 Digital Bus...

  • Page 52: Trigger

    Note: The 2560B Series oscilloscopes allow the use of either voltage or current units for waveform measurements. The remainder of this chapter will refer to just voltages, but it applies to current levels, too.

  • Page 53: Trigger Source

    9.1 Trigger Source The 2560B Series trigger source includes four analog channels sixteen Digital channels, Ext, Ext/5, and AC line. The trigger source is the signal that will be compared to the logical conditions you set to generate a trigger event. The most common trigger source is the signal on one of the analog input channels, but the EXT connector on the back panel can be used to trigger on an external signal.

  • Page 54: Trigger Types

    Trigger 9.2 Trigger Types The 2560B Series provides the following trigger types : • Edge Trigger • Slope Trigger • Pulse Trigger • Video Trigger • Window Trigger • Interval Trigger • Dropout Trigger • Runt Trigger • Pattern Trigger •...

  • Page 55: Slope Trigger

    Trigger Set the Trigger Slope Use the touchscreen controls to select Slope in the Trigger menu. Select one of the available options. • Rising –Only trigger on the rising edge • Falling – Only trigger on the falling edge • Alter – Trigger on both rising edge and falling edge Figure 9.5 Edge Trigger Slopes Holdoff, coupling, and noise reject can be set in edge trigger, see the sections Holdoff,...
  • Page 56 Trigger 5. Press the Lower Upper softkey to select the Lower or Upper trigger level. – Turn the Trigger Level Knob to adjust the position. – The lower trigger level cannot be higher than the upper trigger level. 6. Use the touchscreen to select the Limit Range. •...

  • Page 57: Pulse Trigger

    Trigger 9.2.3 Pulse Trigger The Pulse Trigger type triggers on the positive or negative pulse with a specified width. Figure 9.9 Pulse Trigger To select Pulse Trigger type: 1. Press the Setup key or use the touchscreen controls to enter the Trigger Menu. 2.
  • Page 58 Trigger Figure 9.12 Within a Range of Time Value • - -][- - (outside a range of time value): Trigger when the pulse width is greater than the upper limit or lower than the lower limit. This is the logical complement of the previous triggering interval. Figure 9.13 Pulse Trigger Example Holdoff, coupling, and noise reject can be set in edge trigger, see the sections Holdoff, Trigger Coupling...

  • Page 59: Video Trigger

    Trigger 9.2.4 Video Trigger Video triggering can be used to capture the complicated waveforms of most standard analog video signals. The trigger circuitry detects the vertical and horizontal interval of the waveform and produces triggers based on the video trigger settings you have selected.
  • Page 60 Trigger In the custom video trigger type, the corresponding "Of Fields" varies with the selection of the “Interlace” ratio. Therefore, the number of fields selected and the number of lines corresponding to each field can also be varied. If the "Of Lines" is set to 800, the correct relationship between them is as follows: Of Lines Of Fields Interlace...
  • Page 61 Trigger Figure 9.14 Triggering on a Specific Line of Video Use a Custom Video Trigger Custom video triggering supports frame rate of 25Hz, 30Hz, 50Hz and 60Hz, and the line range is available from 300 to 2000. The steps below show how to set custom trigger. 1.

  • Page 62: Window Trigger

    Trigger 9.2.5 Window Trigger Windows trigger provides a high trigger level and a low trigger level. The instrument triggers when the input signal passes through the high trigger level or the low trigger level. There are two kinds of window types: Absolute and Relative. They have different trigger level adjustment methods. Under Absolute window type, the lower and the upper trigger levels can be adjusted respectively via the Level knob.
  • Page 63 Trigger Set Window Trigger Via Absolute and Relative Window Type To select Window Trigger type: 1. Press the Setup key or use the touchscreen controls to enter the Trigger Menu. 2. Use the touchscreen to select Type . 3. The window shown in figure will appear.

  • Page 64: Interval Trigger

    Trigger 9.2.6 Interval Trigger Trigger when the times difference between the neighboring rising or falling edges meets the time limit conditions (< =, > =, [ - - . - - ], - - ][ - - ). When the trigger condition is set as an interval between two neighboring rising edges and it is less than the set time value, the trigger diagram is as follows: Figure 9.17 Interval Trigger To select Interval Trigger type:...

  • Page 65: Dropout Trigger

    Trigger 9.2.7 Dropout Trigger Dropout trigger includes two types: edge and state. Edge Triggers when an edge followed by a specified time with no edges is detected. This is useful for triggering on the end of a pulse train. Figure 9.18 Dropout Trigger Edge To select Edge Dropout Trigger type: 1.
  • Page 66 Trigger State Triggers when the signal enters or leaves a voltage level and stays there for a specified time. This is useful for detecting when a signal gets stuck at a particular level. Figure 9.19 Dropout Trigger State To select State Dropout Trigger type: 1.

  • Page 67: Runt Trigger

    Trigger 9.2.8 Runt Trigger The runt trigger detects a pulse that crosses the first threshold but not the second. It can occur when a logic driver has insufficient slew rate to reach a valid logic level in the time available. Figure 9.20 Runt Trigger •...

  • Page 68: Pattern Trigger

    Trigger 9.2.9 Pattern Trigger The Pattern trigger identifies a trigger condition by looking for a specified pattern. The pattern trigger can be expanded to incorporate delays. Pattern durations are evaluated using a timer. The timer starts on the last edge that makes the pattern “true”. Potential triggers occur on the first edge that makes the pattern false, provided that the time qualifier criterion has been met.
  • Page 69 Trigger Logic Settings of Analog Channels Logic Settings of Digital Channels Figure 9.22 Source Setting • Low: Sets the pattern to low on the selected channel. A low is a voltage level that is less than the channel’s trigger level or threshold level. •...

  • Page 70: Trigger Mode

    Trigger 9.3 Trigger Mode The oscilloscope’s trigger mode includes Auto, Normal, and Single. Trigger mode affects the way in which the oscilloscope searches for the trigger. After the oscilloscope starts running, the oscilloscope operates by first filling the pre-trigger buffer. It starts searching for a trigger after the pre-trigger buffer is filled and continues to flow data through this buffer while it searches for the trigger.

  • Page 71: Trigger Level

    Trigger Note: The oscilloscope can be forced to trigger by pressing the Single button twice. The trigger status in the upper right corner of the screen will be displayed as "Stop". 9.4 Trigger Level Trigger level and slope define the trigger point. Figure 9.23 Trigger Point To set the trigger level: •...

  • Page 72: Trigger Coupling

    Trigger 9.5 Trigger Coupling Trigger coupling is only valid when the trigger source is set to an analog channel, EXT or EXT/5. To set the trigger coupling: 1. Press the Setup key or use the touchscreen controls to enter the Trigger menu.

  • Page 73: Trigger Holdoff

    Trigger 9.6 Trigger Holdoff Trigger holdoff can be used to add an additional, user-defined delay to the re-arming of the trigger circuit. This provides control over how rapidly, or how often, the oscilloscope can be triggered. The oscilloscope will not trigger until the holdoff time expires.

  • Page 74: Start Holdoff On

    9.6.3 Start Holdoff On Start Holdoff On defines the initial position of holdoff. The 2560B series offers the following start holdoff on options: Acq Start: The initial position of holdoff is the first time point satisfying the trigger condition. In the example above, each holdoff starts from the first rising edge of the pulse sequence.

  • Page 75: Noise Reject

    Trigger Setting Start Holdoff On To set the start holdoff on: 1. Press the Setup key or use the touchscreen controls to enter the Trigger menu. 2. Use the touchscreen controls to select the Start Holdoff On option. – The window shown in figure 9.29 will appear.

  • Page 76: Zone Trigger

    Trigger 9.8 Zone Trigger The 2560B Series includes a zone trigger to help isolate elusive glitches. There are two user-defined areas: Zone1 and Zone2. The property of each zone as intersect or not intersect as an additional condition to further isolate an event. Intersect only includes events that occur within the zone.
  • Page 77 Trigger Once a zone is created, it can be moved by dragging. Touch and hold the zone box and use a dragging gesture to reposition the zone. Figure 9.33 Intersect Zone Figure 9.34 Not Intersect Zone Select C1 as the source, turn on zone1, and set the Change Intersect to Not Intersect and use the drag property as Intersect.
  • Page 78 Trigger Enabling the persistence display, allows the verification of bus contention occurring as shown in figure 9.36. Figure 9.36 Persistence Enabled Using the zone trigger is a quick and simple way to capture the interesting waveform. Figure 9.37 Bus Waveform...

  • Page 79: Serial Trigger And Decode

    Serial Trigger and Decode The 2560B series supports serial bus triggering and decoding on the following serial bus protocols: I2C, SPI, UART, CAN and LIN and also support optional FlexRay, CAN FD, I2S, MIL-STD-1553B, SENT and Manchester. This chapter introduces the method of triggering and decoding these serial signals in details.
  • Page 80 Serial Trigger and Decode Figure 10.2 I2C Signal Menu 4. Set the source of SCL. In the example shown in figure 10.2, SCL is connected to C2. 5. Set the threshold level of SCL. It is 750 mV for the LVTTL signal in this example. 6.

  • Page 81: I2C Trigger

    Serial Trigger and Decode 10.1.2 I2C Trigger The I2C trigger has nine trigger conditions: (Start, Stop, Restart, No Ack, EEPROM, 7 Addr&Data, 10 Addr&Data and Data Length) • Start Condition: The oscilloscope will be triggered when the SDA signal transitions from high to low while the SCL clock is high.
  • Page 82 Serial Trigger and Decode Note: If the data’s value is 0xXX, any data value will be matched. Figure 10.6 7 Address & Data • 10 address & Data: The oscilloscope will be triggered when the following conditions are satisfied: – The address’s length must be 10 bits and the address’s value must be the same as the set value. –...
  • Page 83 Serial Trigger and Decode Operation Step 1. Touch Setup key or use the touchscreen controls to enter the Trigger Menu. 2. Use the touchscreen to select Type . 3. The window shown in figure will appear. – Use the touchscreen to select Serial. 4.

  • Page 84: I2C Serial Decode

    Serial Trigger and Decode 10.1.3 I2C Serial Decode Once the setup for the I2C signal and trigger has been completed, the decoding operation must be setup. 1. Touch Decode key to display the Decode menu. 2. Use the touchscreen to enable the Bus Operation. 3.

  • Page 85: Spi Trigger And Serial Decode

    Serial Trigger and Decode 10.2 SPI Trigger and Serial Decode 10.2.1 Setup for SPI Signals Setting the SPI (Serial Peripheral Interface) signal includes two steps: Connecting the CLK, MISO, MISO and CS signal to oscilloscope, specifying the parameters of each input signal. 1.
  • Page 86 Serial Trigger and Decode Function Menu Settings Description ˜CS Low voltage level of CS signal is available High voltage level of CS signal is available If the time between two edges of the clock signal is less than (or equal to) the value of timeout, the signal between the two edges is treated as a frame.
  • Page 87 Serial Trigger and Decode When the CS type is set to Clock Timeout, the clock idle time between frames is T3, the clock period is T1, then set the timeout to a value between T1 and T3 Figure 10.12 Example 2 If the data width is set to be greater than 8 bits (such as 16 bits), the clock idle time between 8-bit data packets T2, and then set the timeout time to a value between T1/2+T2 and T3.

  • Page 88: Spi Trigger

    Serial Trigger and Decode 10.2.2 SPI Trigger This section provides a brief introduction for the operation of the SPI trigger. 1. Press the Setup key to enter the TRIGGER function menu. 2. Touch Type and select Serial. 3. Touch Protocol and select SPI. 4.

  • Page 89: Spi Serial Decode

    Serial Trigger and Decode 10.2.3 SPI Serial Decode Once the setup of SPI signal and trigger is complete, the SPI signals can be decoded. Operation steps as follows: 1. Touch Decode –>Decode. Select one of the options from the Decode1 and Decode2. 2.

  • Page 90: Uart Trigger And Serial Decode

    Serial Trigger and Decode 10.3 UART Trigger and Serial Decode 10.3.1 Setup for UART Signals 1. Press the Decode key to enter the DECODE menu. 2. Touch Decode and select the desired slot (Decode1 or Decode2). 3. Touch Protocol and then select UART by turning Universal Knob. 4.

  • Page 91: Uart Trigger

    Serial Trigger and Decode 10.3.2 UART Trigger This section includes an introduction and description for the operation of the UART trigger. 1. Touch Setup key to enter the TRIGGER function menu. 2. Touch Type and select Serial. 3. Touch Protocol and select UART. 4.

  • Page 92: Uart Serial Decode

    Serial Trigger and Decode 10.3.3 UART Serial Decode Upon completing the setup of UART signal and trigger, the UART signals can be decoded. Operation steps as follows: 1. Press Decode –> Decode. Select one of the options from the Decode1 and Decode2. 2.
  • Page 93 Serial Trigger and Decode Interpreting UART Decode The frames of decoding result: • RX — the decoding result of the data received. • TX — the decoding result of the data transmitted. • Indicates there is not enough space on the display to show the complete content of a frame, and some content is hidden.

  • Page 94: Can Trigger And Serial Decode

    Serial Trigger and Decode 10.4 CAN Trigger and Serial Decode Placed in order of Setup for CAN Signals, CAN Trigger and, CAN Serial Decode” to trigger and decode the signals. 10.4.1 Setup for CAN Signals 1. Touch Decode key to enter the DECODE function menu. 2.

  • Page 95: Can Serial Decode

    Serial Trigger and Decode Operation Steps 1. Touch Setup to enter the TRIGGER function menu. 2. Touch Type and select Serial. 3. Touch Protocol and select CAN. 4. Touch Trigger Setting to enter the CAN TRIG SET menu. 5. Touch Condition and select the trigger condition by turning the Universal Knob: •...
  • Page 96 Serial Trigger and Decode 6. Touch Format softkey to change the character encoding format of the decoder’s result. 7. Touch Scroll and turn the Universal Knob to view all frames. Interpreting CAN Decode The frame of decoding result: • Arbitration field is displayed in frame •...

  • Page 97: Lin Trigger And Serial Decode

    Serial Trigger and Decode 10.5 LIN Trigger and Serial Decode 10.5.1 Setup for LIN Signals There are two steps of setting the LIN signal, connecting the signal to oscilloscope, specifying the parameters of each input signal. 1. Press the Decode key to enter the DECODE function menu. 2.
  • Page 98 Serial Trigger and Decode Operation Steps • Touch Setup key to enter the TRIGGER function menu. • Touch Type and select Serial. • Touch Protocol and select I2C. • Touch Trigger Setting to enter LIN TRIG SET menu. • Touch Condition and select the trigger condition by Universal Knob: •...

  • Page 99: Interpreting Lin Decode

    Serial Trigger and Decode 10.5.1 Interpreting LIN Decode The frame of decoding result: • Protected Identifier Field is displayed in frame • Data Length is displayed in frame • Data Field is displayed in frame. • Checksum Field is displayed in frame. •...

  • Page 100: Flexray Trigger And Serial Decode

    Serial Trigger and Decode 10.6 FlexRay Trigger and Serial Decode This section covers triggering and decoding FlexRay signals. Please read the following for more details: FlexRay Signal Configuration, FlexRay Trigger FlexRay Serial Decode. Before configuring the signal settings, connect the FlexRay signal to the oscilloscope. 10.6.1 FlexRay Signal Configuration To select the decoding Bus Protocol: 1.

  • Page 101: Flexray Trigger

    Serial Trigger and Decode Protocol Copy The signal settings of decoding and triggering are independent. To synchronize the settings between decode and trigger select Protocol Copy. 1. The DECODE COPY menu will be displayed. (Figure 10.29) 2. Use the touchscreen to select Copy To Trigger or Copy From Trigger. 3.

  • Page 102: Flexray Serial Decode

    Serial Trigger and Decode • TSS: The oscilloscope triggers on the transmission start sequence. • Frame: The oscilloscope triggers on the frame. – Set Frame header indicators: Payload preamble indicator, null frame indicator, sync frame indicator, startup frame indicator. – Touch ID to set the frame ID by the universal knob or virtual keypad. The range of ID is 0x000 to 0x7ff. –...
  • Page 103 Serial Trigger and Decode Figure 10.31 FlexRay Signal Decode In the list view: • Time: The horizontal offset of the current data frame head relative to the trigger position. • FID: Frame ID, symbol occupies a single line of the list. •...

  • Page 104: Can Fd Trigger And Serial Decode

    Serial Trigger and Decode 10.7 CAN FD Trigger and Serial Decode This section covers triggering and decoding CAN FD signals. Please read the following for more details: CAN FD Signal Configuration, CAN FD Trigger CAN FD Serial Decode. Before configuring the signal’s settings connect the CAN FD signal to the oscilloscope. 10.7.1 CAN FD Signal Configuration To select the decoding Bus Protocol: 1.
  • Page 105 Serial Trigger and Decode Protocol Config To set the baud rate use the touchscreen to select Protocol Config: 1. The CAN FD menu will be displayed. (Figure 10.35) 2. Use the touchscreen to select Baud and set the baud rate. –...

  • Page 106: Can Fd Trigger

    Serial Trigger and Decode 10.7.2 CAN FD Trigger To select CAN FD Trigger: 1. Touch the Trigger dialog box to display the Trigger menu. 2. Use the touch screen to select Protocol. – the dropdown menu shown in figure ?? will appear. 3.
  • Page 107 Serial Trigger and Decode 3. Touch Bus to select either Bus1 or Bus2. 4. Touch Display to select the character encoding format of the decoding’s result. – The bus’s vertical position can be adjusted using the Universal Knob after selecting Bus Position. 5.

  • Page 108: I2S Trigger And Serial Decode

    Serial Trigger and Decode 10.8 I2S Trigger and Serial Decode This section covers triggering and decoding I2S signals. Please read the following for more details: I2S Signal Configuration, I2S Trigger I2S Serial Decode Before configuring the signals settings connect the I2S signal to the oscilloscope. 10.8.1 I2S Signal Configuration To select the decoding Bus Protocol: 1.
  • Page 109 Serial Trigger and Decode • Use the touchscreen to select WS and select the source the signal is connected to. • Use the touchscreen to select Threshold and input the desired threshold – The threshold voltage level is for decoding, and it will be regarded as the trig- ger voltage level when the trigger type is set to serial.
  • Page 110 Serial Trigger and Decode Protocol Copy The signal settings of decoding and triggering are independent. To synchronize the settings between decode and trigger select Protocol Copy. 1. The DECODE COPY menu will be displayed. (Figure 10.29) 2. Use the touchscreen to select Copy To Trigger or Copy From Trigger. 3.

  • Page 111: I2S Trigger

    Serial Trigger and Decode 10.8.2 I2S Trigger To select I2S Trigger: 1. Touch the Trigger dialog box to display the Trigger menu. 2. Use the touch screen to select Protocol. – the dropdown menu shown in figure ?? will appear. 3.

  • Page 112: I2S Serial Decode

    Serial Trigger and Decode 10.8.3 I2S Serial Decode Once the setup for the FlexRay signal and trigger has been completed, the decoding operation must be setup. 1. Touch Decode key to display the Decode menu. 2. Use the touchscreen to enable the Bus Operation. 3.

  • Page 113: Mil-Std-1553B Trigger And Serial Decode

    Serial Trigger and Decode 10.9 MIL-STD-1553B Trigger and Serial Decode This section covers triggering and decoding MIL-STD-1553B signals. Please read the following for more details: MIL-STD-1553B Signal Configuration, and MIL-STD- 1553B Serial Decode. Before configuring the signals settings connect the MIL-STD-1553B signal to the oscilloscope.

  • Page 114: Mil-Std-1553B Serial Decode

    Serial Trigger and Decode Protocol Copy The signal settings of decoding and triggering are independent. To synchronize the settings between decode and trigger select Protocol Copy. 1. The 1553B DECODE COPY menu will be displayed. (Figure ??) 2. Use the touchscreen to select Copy To Trigger or Copy From Trigger. 3.
  • Page 115 Serial Trigger and Decode Figure 10.48 1553B Bus In the decoding list view: • Time: The horizontal offset of the current data frame head relative to the trigger position. • RTA: The RT address • Type: Type of the word •...

  • Page 116: Sent Trigger And Serial Decode

    Serial Trigger and Decode 10.10 SENT Trigger and Serial Decode This section covers triggering and decoding SENT signals. Please read the following for more details: SENT Signal Configuration, SENT Trigger SENT Serial Decode. Connect the SENT signal to the oscilloscope, set the mapping relation between the channels and the signals.
  • Page 117 Serial Trigger and Decode Protocol Config To set the baud rate use the touchscreen to select Protocol Config: 1. The SENT CONFIG menu will be displayed. (Figure 10.51) 2. Use the touchscreen to select Message Format. The following formats are available: –...

  • Page 118: Sent Trigger

    Serial Trigger and Decode Protocol Copy The signal settings of decoding and triggering are independent. To synchronize the settings between decode and trigger select Protocol Copy. 1. The DECODE COPY menu will be displayed. (Figure 10.29) 2. Use the touchscreen to select Copy To Trigger or Copy From Trigger. 3.
  • Page 119 Serial Trigger and Decode Trigger Settings 1. Use the touchscreen to select Trigger Setting. 2. Use the touchscreen to select Condition. The following conditions are available: • Start: the oscilloscope will be triggered on the start of message (after 56 synchronization ticks).
  • Page 120 Serial Trigger and Decode Figure 10.55 SENT Message The serial message frame contains 21 bits of payload data. Two different configurations can be chosen determined by the configuration bit (serial data bit #3, serial communication nibble No. 8): Enhanced Serial Message with 4bits ID: 16-bit data and 4-bit message ID, the configuration bit is 1. Figure 10.56 SENT Message2 Enhanced Serial Message with 8bits ID: 12-bit data and 8-bit message ID, the configuration bit is 0.

  • Page 121: Sent Serial Decode

    Serial Trigger and Decode Figure 10.57 SENT Message3 – Error: the oscilloscope triggers on the error frame. Errors include Successive Sync Pulses Error Pulse Period Error, Fast Channel CRC Error, Slow Channel CRC Error, All CRC Errors. – Successive Sync Pulses Error: triggers on a sync pulse whose width varies from the previous sync pulse’s width by greater than 1/64 (1.5625%, as defined in the SENT specification).
  • Page 122 Serial Trigger and Decode Interpreting the SENT Decode On the bus: For Fast Channel: • SYNC is displayed in pink • STATE is displayed in green • DATA is displayed in white • CRC and Pause pulse are displayed in blue Figure 10.58 SENT Fast Channel For Slow Channel: •...
  • Page 123 Serial Trigger and Decode Figure 10.59 SENT Fast Channel In the list view: • Time: The horizontal offset of the current data frame head relative to the trigger position. • Sync: Sync pulse width (only fast channel) • State: Status & Communication nibble (only fast channel) •...

  • Page 124: Manchester Trigger And Serial Decode

    Serial Trigger and Decode 10.11 Manchester Trigger and Serial Decode This section covers triggering and decoding Manchester signals. Please read the following for more details: Manchester Signal Configuration, SENT Trigger and Manchester Serial Decode. Connect the Manchester signal to the oscilloscope, set the mapping relation between the channels and the signals.
  • Page 125 Serial Trigger and Decode Protocol Config To set the baud rate use the touchscreen to select Protocol Config: 1. The Manchester CONFIG menu will be displayed. (Figure ??) 2. Use the touchscreen to select Baud. – Use the Universal Rotary Knob or the virtual keypad to set the baud rate, the range is 500b/s to 5Mb/s 3.

  • Page 126: Manchester Serial Decode

    Serial Trigger and Decode Protocol Copy The signal settings of decoding and triggering are independent. To synchronize the settings between decode and trigger select Protocol Copy. 1. The DECODE COPY menu will be displayed. (Figure 10.29) 2. Use the touchscreen to select Copy To Trigger or Copy From Trigger. 3.
  • Page 127 Serial Trigger and Decode Figure 10.63 Manchester Bus...

  • Page 128: Cursors

    Cursors Cursors are horizontal and vertical markers that indicate X-axis values and Y-axis values on a selected waveform source. Cursors can be used to make custom voltage and time measurements on the oscilloscope signals. The cursor types include X1, X2, X1-X2, Y1, Y2 and Y1- Y2, used to indicate X-axis values (time or frequency) and Y-axis values (amplitude) on a selected waveform (CH1/CH2/CH3/CH4/F1/F2/REFA/REFB/REFC/REFD).

  • Page 129: Cursors

    Cursors Figure 11.2 Track Cursor Mode – Measure: When measurements are displayed, this mode shows the cursor locations used to make the measurement. When you add a measurement, it becomes the one that cursors are displayed for. The measurement whose cursor locations are displayed is selected in the Measure Item option.

  • Page 130: Y Cursors

    Cursors Figure 11.3 Measure Cursor Mode Figure 11.4 X Cursors 11.2 Y Cursors Y cursors are horizontal dotted lines that adjust vertically and can be used to measure voltage (V) or current (A). When the cursors source is the math function, the unit will match the math function.
  • Page 131 Cursors Y1 cursor is the top (default position) horizontal dotted line; it can be moved to any vertical place of the screen. Y2 cursor is the down (default position) horizontal dotted line; it can be moved to any vertical place of the screen. Use the Universal Knob to set the Y1 and Y2 cursor values and the values are displayed in the cursors box along with the difference between Y1 and Y2 (Y).

  • Page 132: Display Style

    Cursors 11.3 Display Style Fixed The position information of each cursor is attached to the cursor, and the difference information is between the two cursors with arrows connected to the cursors. Figure 11.6 Fixed Display Style...

  • Page 133: Make Cursor Measurements

    Cursors Following The position information of each cursor and the difference between the cursors are displayed in a region on the screen. The region can be moved by gestures to avoid covering the waveform. Figure 11.7 Following Display Style 11.4 Make Cursor Measurements 1.

  • Page 134: Cursors Reference

    Cursors 11.5 Cursors Reference Cursor X Ref • Fixed Delay: When the timebase is changed, the value of X cursors remains fixed. • Fixed Position: When the timebase is changed, the X cursors remain fixed to the grid position on the display. Cursor Y Ref •...
  • Page 135 Cursors Figure 11.9 Example 2 Fixed position, timebase is changed to 100ns/div, the grid number of X cursors (-1div, 2div) remains fixed. The value of X1 and X2 are changed to -100 ns, 200 ns. Figure 11.10 Example 3 Fixed delay, timebase is changed to 100 ns/div, the value of X cursors (-50 ns, 100 ns) remains fixed. The grid number of X cursors are changed to -0.5 div, 1 div.

  • Page 136: Measure

    The oscilloscope provides measurements of 36 waveform parameters and the statistics. It contains voltage, time, and delay parameters. The 2560B series can measure multiple channels at the same time, displaying up to 5 parameter measurements with statistics while in the M1 display mode and up to 12 parameters in the M2 mode. To view more parameters on a specified channel, the Simple mode can be employed.
  • Page 137 Measure • Advanced: Advanced mode has two display modes M1 and M2. – To toggle between M1 and M2 touch Config while advanced mode is selected. – Touch Display Mode to toggle between M1 and M2 mode. a. M1: Displays a maximum of 5 specified basic measurement parameters of the selected channel. Statistics and Histogram are available for M1 display.

  • Page 138: Set Measurement Types

    Measure 12.2 Set Measurement Types To add a measurement in Advanced mode: 1. Touch the Type option in the measure menu, or touch the + in the measurement parameters and statistics display area. – The Measure Select window will be displayed. See figure 12.5 Figure 12.5 Measure Select 2.

  • Page 139: Type Of Measurement

    Measure 12.3 Type of Measurement 12.3.1 Vertical Measurements Vertical measurements include 19 measurements. Figure 12.6 Vertical parameters Figure 12.7 Vertical Measurements 1. Maximum: Highest value in input waveform. 2. Minimum: Lowest value in input waveform. 3. Peak-Peak: Difference between maximum and minimum data values. 4.
  • Page 140 Measure 10. Cycle Stdev: Standard deviation of all data values in the first cycle 11. Rms: Root mean square of all data values. 12. Cycle RMS: Root mean square of all data values in the first cycle. 13. Median: Value at which 50% of the measurements are above and 50% are below. 14.

  • Page 141: Horizontal Measurements

    Measure 12.3.2 Horizontal Measurements Horizontal measurements include 17 types of parameter measurements. Figure 12.10 Horizontal parameters Figure 12.11 Horizontal Measurements 1. Period: Period for every cycle in waveform at the 50% level, and positive slope. 2. Frequency: Frequency for every cycle in waveform at the 50% level ,and positive slope. 3.

  • Page 142: Miscellaneous Measurements

    Measure 12. Rise Time: Duration of rising edge from 10-90%. 13. Fall Time: Duration of falling edge from 90-10%. 14. 10-90% Rise: Duration of rising edge from 10-90%. 15. 90-10% Fall: Duration of falling edge from 90-10%. 16. CCJ: The difference between two consecutive periods. 12.3.3 Miscellaneous Measurements Miscellaneous measurements include 14 types of parameter measurements.

  • Page 143: Delay Measurements

    Measure 12.3.4 Delay Measurements Delay measurement measures the time difference between two channels. It includes 10 delay parameters: Figure 12.13 CH Delay Measurements 1. Phase: Phase difference between two edges. 2. Skew: Time of source A edge minus time of nearest source B edge. 3.

  • Page 144: Trend

    Measure 12.4 Trend After adding a measurement parameter, trend can be used to observe the change of the selected measurement value over time. To enable to trend operation: 1. Touch the Tools option in the measure menu. 2. Touch the Trend option to display the dropdown menu with the available options. 3.

  • Page 145: Simple Measurements

    Measure 12.5 Simple Measurements Enabling Simple Measurement displays all selected measurement parameters of the specified channel at the same time. The font color of the measurement parameters is consistent with the color of the specified source. Yellow for Channel 1, Purple for Channel 2, etc.

  • Page 146: Statistics Histogram

    Measure 12.7 Statistics Histogram After enabling statistics on a selected measurement, activate a statistical histogram. The histogram appears at the bottom of the statistics area. This enables users to quickly view the probability distribution of the measured parameters. Figure 12.17 Histogram Enabled Touch the histogram area of a parameter to enlarge it for details.

  • Page 147: Amplitude Strategy

    Measure Figure 12.20 shows a scenario in which the gate function is used to measure the pea-peak parameter of an amplitude modulated waveform. Figure 12.20 Gate Example 12.9 Amplitude Strategy According to different types of input signals, choosing the corresponding amplitude calculation strategy which can make the measurement of top value and bottom values more accurate.

  • Page 148: Threshold

    Measure 12.10 Threshold Measurement thresholds can be defined by the user. This is more flexible than fixed thresholds. For example, for pulse width measurement, the threshold can be specified rather than fixed at 50%. For rise time, the lower / upper thresholds can be specified rather than fixed at 10%/90%.

  • Page 149: Math

    Math The 2560B series supports two math traces and multiple math operations. Arithmetic operators include: addition (+), subtraction (-), multiplication (*), division (/), average, Eres, identity, and negation. Algebra operators include: differential (d/dt), integral (∫ ����), square root (√), absolute ( |y|), sign, exp, exp10, ln, lg, interpolate;...

  • Page 150: Units For Math Waveforms

    Math Figure 13.2 Function Window 13.1 Units for Math Waveforms Use the channel function menu to set the unit of each channel to “V” or “A”. The oscilloscope math operation includes units as below: Math Operation Unit V, A, or U* *(used when the units Addition (+) or Subtraction (-) of two sources are not consistent) multiplication (x)

  • Page 151: Arithmetic

    Math 13.2 Arithmetic The 2560B series can perform arithmetic operations including addition, subtraction, multiplication or division on any two analog input channels. The values of Source A and Source B are computed point by point. 13.2.1 Subtraction Example Math operators perform arithmetic operations add or subtract operation on any two analog input channels. When you select addition or subtraction, the Source A and Source B values are added or subtracted point by point, and the result is displayed.

  • Page 152: Average

    Math 13.2.2 Average The oscilloscope accumulates multiple waveform frames and calculates the average as the result. If a stable trigger is available, the resulting average has a random noise component lower than that of a single-shot record. The more frames that are accumulated, the lower the noise is.

  • Page 153: Eres

    Math 13.2.3 ERES The oscilloscope filters the sample, which rejects noise in the high frequency domain, so the signal-to-noise ratio (SNR) is improved. As a result, the effective number of bits (ENOB) of the oscilloscope is enhanced. Figure 13.5 ERES Example ERES operation does not require the signal to be periodic, nor does it require stable triggering, but due to the digital filtering, the system bandwidth of the oscilloscope will degrade when acquiring data in ERES mode.

  • Page 154: Algebra

    Math 13.3 Algebra √ The oscilloscope supports math function operation including differential (d/dt), integral (∫ ����) and square root ( 13.3.1 Differentiate ��(�� + ����) − ��(��) ���� = ���� d/dt (differentiate) calculates the discrete time derivative of the selected source. Where: •...

  • Page 155: Integrate

    Math 13.3.2 Integrate The MATH operation dt (integration) calculates the numerical integral of the selected source. (∫ ����) calculates the integral of the waveform’s data using the trapezoidal rule. The equation is: �� �� = �� + Δ�� + ∑ �� ��...

  • Page 156: Square Root

    Math Figure 13.8 Integral Gate 13.3.3 Square Root √ Square root ( ) calculates the square root of the selected source. Where the transform is undefined for a particular input, holes (zero values) appear in the function output. Figure 13.9 Square Root...

  • Page 157: Absolute

    Math 13.3.4 Absolute Absolute |y| calculates the absolute value of the selected trace. Figure 13.10 Absolute Operation 13.3.5 Sign In mathematics, the sign function or signum function (from signum, Latin for "sign") is an odd mathematical function that extracts the sign of a real number. The sign function of a real number x is defined as follows: Sign(x) = -1 if x <...

  • Page 158: Exp/Exp10

    Math Figure 13.11 Sign Operation 13.3.6 Exp/Exp10 The exponential operation includes the exponential operation �� based on constant e and the exponential operation 10 �� based on 10. Figure 13.12 Exp Operation...

  • Page 159: Ln/Lg

    Math 13.3.7 Ln/Lg Logarithmic operation includes logarithm base e (ln) and logarithm base 10 (lg). In logarithmic operation, if the waveform value is negative (the waveform is below the ground level), the result is displayed as zero. For example: F1 =�� , where x is the trigonometric wave function.

  • Page 160: Frequency Analysis (Fft Operation)

    Math 13.4 Frequency Analysis (FFT Operation) FFT is used to compute the fast Fourier transform using analog input channels. FFT takes the digitized time record of the specified source and transforms it to the frequency domain. When the FFT function is selected, the FFT spectrum is plotted on the oscilloscope display as magnitude in dBV versus frequency.
  • Page 161 Math Window Applications and Characteristics These are normally used when the signal is transient (completely contained in the time- domain window) or known to have a fundamental frequency component that is an integer Rectangle multiple of the fundamental frequency of the window. Signals other than these types will show varying amounts of spectral leakage and scallop loss, which can be corrected by selecting another type of window.

  • Page 162: Parameter Display Area

    Math 13.4.2 Parameter Display Area The FFT parameters are displayed in the upper right of the spectrum waveform display area: Figure 13.18 Parameter Display Area • FFT sample rate (Sa): FFT operation results present the first Nyquist zone (DC Sa/2) of the frequency spectrum. Be aware that the FFT sample rate may be inconsistent with the sample rate in the time domain.

  • Page 163: Horizontal

    Math 13.4.4 Horizontal Touch Horizontal in the math menu to recall the FFT horizontal menu: • Touch Center to set the center frequency by the universal knob or the virtual keypad. • Touch Span to set the frequency span by the universal knob or the virtual keypad.

  • Page 164: Markers Tool

    Math 13.5.2 Markers Tool Based on the peak tool, the markers tool can automatically search the qualified harmonics, and users can control the position of each marker. Up to 8 markers are supported. To configure the Markers tool: 1. Press the Math to open the math menu. 2.

  • Page 165: Measure The Fft Waveform

    Math Figure 13.24 Marker Tool 13.5.3 Measure the FFT Waveform Press the Cursors button on the front panel to turn on the cursor function. Specify the source as Math. X1 and X2 cursors can be used to measure the frequency value at the cursor position. Only the maximum parameter of the FFT is supported in automatic measurement.

  • Page 166: Formula Editor

    Math 13.6 Formula Editor Custom formulas can be created using the Formula Editor. To open the Formula Editor: 1. Press the Math to open the math menu. 2. Touch Functions to open the Function Window. 3. Touch the Formula Editor tab. –...

  • Page 167: Reference Waveform

    Reference Waveform Data from analog channels or math can be saved to the reference locations (REFA/REFB/REFC/REFD) in the built-in non-volatile memory. The saved reference waveform can be recalled to be compared with the current waveform. 14.1 Save REF Waveform to Internal Memory TO save the REDF waveform to internal memory: 1.
  • Page 168 Reference Waveform Figure 14.1 Recall REFB...

  • Page 169: Search

    15.2 Copy The 2560B series supports replication between search settings and trigger settings. • Copy from Trigger: Synchronize the current trigger settings to the search settings. • Copy to Trigger: Synchronize the current search settings to the trigger settings.
  • Page 170 Search Figure 15.1 Search in Run When the acquisition is stop, “EVENT NUM: 4/7” means current event number/total events number, the current event is the closest event to the middle of the screen.

  • Page 171: Navigate

    Navigate The 2194 provides three navigate types: Search Event, Time , History Frame. 16.1 Navigate by Time 1. Press the Navigate key on the front panel or touch the menu Analysis > Navigate to enter the Navigate function menu. 2. Touch Type in the Navigate menu, to select the navigate type as Time. –...

  • Page 172: Navigate By Search Event

    Navigate 16.2 Navigate by Search Event When the Search function is turned on and the acquisition is stopped, Navigate is usable to find search events (see the chapter Search for search function). 1. Press the Navigate key on the front panel or touch the menu Analysis > Navigate to enter the Navigate function menu.

  • Page 173: Navigate By History Frame

    Navigate 16.3 Navigate by History Frame When the history function is enabled, Navigate can be used to play history frames (see the chapter "History for details of history function). 1. Press the Navigate key on the front panel or touch the menu Analysis > Navigate to enter the Navigate function menu.

  • Page 174: Mask Test

    Mask Test To verify if a waveform is within desired bounds use pass/fail testing. A pass/fail test defines a region of the oscilloscope display (mask) in which the waveform must remain in order to pass the test. Being within a specified-range is verified point-by-point across the display.

  • Page 175: Mask Setup

    Mask Test 17.1 Mask Setup Touch Mask Setup in the Mask Test menu to set the mask. There are two methods to create a mask: • Create Mask: Set horizontal and vertical values . • Mask Editor: Draw polygons to create a mask. •...

  • Page 176: Mask Editor

    Mask Test 17.1.2 Mask Editor The mask editor is a built-in tool that provides an approach to create custom masks. To enter the mask editor: Touch Analysis > Mask Test > Mask Setup > Mask Editor. Figure 17.5 Mask Editor A.
  • Page 177 Mask Test – Edit Polygon: Edits a polygon. Vertices, sides and the polygon are all editable objects – Delete Polygon: Deletes selected polygon B. Coordinate of the latest touched point on the display C. Mask edit area, which is equivalent to the grid area. In this example, a hexagon has been created as a part of the mask D.

  • Page 178: Operation

    Mask Test 17.2 Operation Touch Operation to start/stop the test. Stopping a test in progress and restart the test will clear the count of the passing frames, failed frames, total frames, and the fail rate. Pressing the Clear Sweeps button on the front panel can also clear the count information.

  • Page 179: Counter

    Counter The counter is used to measure the frequency and period of a signal or count the events happening within it. The counter is asynchronous to the acquisition system of the oscilloscope. It can work well even if the acquisition of the oscilloscope is stopped (indicated by a red-colored Run/Stop button) 18.1 Counter Configuration To enable the counter function:...

  • Page 180: Mode

    Counter 18.2 Mode The counter provides 3 modes. Touch mode in the Counter menu to open the mode selection window: Figure 18.3 Mode Window • Frequency: Average frequency over a period of time • Period: The reciprocal of the average frequency over a period of time •...

  • Page 181: Power Analysis

    Power Analysis The 2560B series supports a power analysis function. Power analysis can help users quickly and easily analyze and debug switching power supply designs. It automatically calculates Power Quality, Current Harmonics, Inrush Current, Switching Loss, Slew Rate, Modulation, Turn On/Turn Off, Transient Response, PSRR, Power Efficiency, Output Ripple, etc. Full use of the Power analysis requires a differential voltage probe, a current probe, and a deskew fixture.

  • Page 182: Power Quality

    Power Analysis 19.1 Power Quality The specific measurement parameters of power quality analysis include active power, apparent power, reactive power, power factor, power phase angle, voltage effective value, current effective value, voltage crest factor and current crest factor of power input of a switching power supply. 19.1.1 Type Power Includes all the items to describe energy flow in a system: Active power, reactive power, apparent power, power factor...

  • Page 183: Input Setup

    Power Analysis Voltage Crest Voltage parameters of the power input including voltage crest, voltage effective value, and voltage crest factor. ��−1 ∗ √ ∑�� �� �� ������ = �� ��=0 �� �������� �� ���������� = �� ������ Current Crest Current parameters of the power input including current crest, current effective value, and current crest factor. ��−1 ∗...

  • Page 184: Current Harmonics

    Power Analysis 19.2 Current Harmonics Current harmonics is used to analyze the input current harmonics. An FFT of the selected channel is performed to get the harmonic components. The signal settings and connection guide are the same as the power quality test. 19.2.1 Configuration To configure the current harmonics analysis: 1.

  • Page 185: Parameter Description

    Power Analysis 19.2.3 Parameter Description For the first 40 harmonics, the following values are displayed: • Measured Value (RMS): The measured value displayed in the unit specified by the harmonic unit parameter • Limit Value (RMS): Limits specified by the selected standard •...

  • Page 186: Inrush Current

    Power Analysis 19.3 Inrush Current A large current far greater than the stable current may flow through at the moment of switching on a power supply. The large current is called inrush current. The current waveform when switching on is shown in figure 19.7 Figure 19.7 Inrush Current 19.3.1 Input Setup...

  • Page 187: Switching Loss

    Power Analysis Figure 19.9 Connection Guide 19.4 Switching Loss Switch loss analysis can be used to calculate the power dissipated in the switching period. 19.4.1 Deskew Calibration A relatively small skew can cause a large measurement error of switching loss, especially during the on phase when the voltage is close to zero and the non-on phase when the current is close to zero.

  • Page 188: Switching Loss Configuration

    Power Analysis 19.4.2 Switching Loss Configuration To configure the switching loss configuration 1. Set Analysis to Switching Loss in the power analysis menu. 2. Touch Config to display the switching loss configuration menu shown in figure 19.10. 3. Touch V Ref to set he voltage reference, i.e. the switch level at the edge of the input switch.

  • Page 189: Input Setup

    Power Analysis 19.4.4 Input Setup 1. Touch Input Setup to display the signal menu shown in figure 19.11. 2. Touch Input Voltage to set the input voltage source. 3. Touch Input Current to set the input current source. 4. Touch Auto Deskew to automatically deskew. 5.

  • Page 190: Slew Rate

    Power Analysis 19.5 Slew Rate The slew rate measures the change rate of voltage or current during switching. Figure 19.13 Slew Rate 19.5.1 Connection Guide Touch Signal > Connection Guide to recall the connection guide of slew rate, as shown in figure 19.14. Follow the instructions in the figure for connection.

  • Page 191: Modulation

    Power Analysis 19.6 Modulation Modulation analysis measures the control pulse signal of the switching device (MOSFET) and observes the pulse width, duty, period, frequency and other trends of the control pulse signal in response to different events. 19.6.1 Input Modulation 1.

  • Page 192: Output Ripple

    Power Analysis 19.7 Output Ripple Power supply ripple is an important parameter to evaluate DC power supplies, which represents the quality of output DC voltage. Ripple analysis can measure the current value, average value, minimum value, maximum value, standard deviation and count of the power supply output ripple. 19.7.1 Output Ripple Input Setup 1.

  • Page 193: Turn On/Turn Off

    Power Analysis 19.8 Turn on/Turn Off Turn on analysis determines the time taken for the power supply to reach 90% of its steady-state output. Turn off analysis determines the time taken for the power supply to fall to 10% of its maximum output voltage. 19.8.1 Turn On/Turn Off Input Setup 1.

  • Page 194: Testing Conditions

    Power Analysis Figure 19.20 Connection Guide 19.8.2 Testing Conditions Turn On Determines the time taken for the power to reach a certain percentage of its steady-state output. The turning on time is between T2 and T1, where: • T1 = When the input voltage first rises to a certain percentage (usually 10%) of its maximum amplitude •...

  • Page 195: Transient Response

    Power Analysis 19.9 Transient Response Transient response analysis can determine the response speed of the output voltage of the power supply to the change of the output load. This time starts from the first time that the output voltage exits the stable band and ends at the last time that the output voltage enters the stable band.

  • Page 196: Transient Response Configuration

    Power Analysis Figure 19.22 Connection Guide 19.9.2 Transient Response Configuration 1. Touch Config to display the signal menu shown in figure 19.23. 2. Touch Low Current and turn the Universal Knob or use the virtual numeric keypad to set the input low current value. –...

  • Page 197: Psrr

    Power Analysis 19.10 PSRR The power supply rejection ratio (PSRR) test is used to determine how the regulator suppresses ripple noise in different frequency ranges. The oscilloscope controls the arbitrary waveform/function generator to output a sweep signal, which is used to introduce ripple into the DC voltage transmitted to the voltage regulator. Measure the AC RMS ratio of input to output, and plot the relationship between the ratio and frequency.

  • Page 198: Power Efficiency

    Power Analysis 19.11 Power Efficiency Power efficiency analysis can test the overall efficiency of the power supply by measuring the output power and input power. This analysis is only supported on 4-channel models because all of the input voltage, input current, output voltage, and output current are necessary for the measurement.

  • Page 199: Bode Plot

    At this time, either the built-in waveform generator or one of a BK Precision series arbitrary function generators are supported. During the sweep, the oscilloscope configures the generator output frequency and amplitude and then compares the input signal to the output of the DUT.

  • Page 200: Bode Plot Configuration

    Bode Plot 20.1 Bode Plot Configuration Touch Configure to display the Bode Plot Configure Window shown in figure 20.2 Figure 20.2 Bode Plot Configure Window 20.1.1 Connection Figure 20.3 Connection A. DUT input and output channels B. Channel gain. When it is set to Auto, the oscilloscope will automatically adapt the vertical scale according to the signal amplitude.

  • Page 201: Sweep

    Bode Plot 20.1.2 Sweep Touch Sweep Type to select the sweep type. There are two types: Simple and Variable Level. 20.1.3 Simple Sweep Figure 20.4 Simple Sweep A. Set the sweep type to simple. There are two types: Simple and variable level. B.
  • Page 202 Bode Plot Vari-Level Sweep Figure 20.5 Vari-Level Sweep A. Set the sweep type to Vari-Level B. Select a profile. Up to 4 profiles can be edited C. Set the frequency mode D. Set the number of sweep points E. Set the offset of the sweep signal F.

  • Page 203: Editor

    Bode Plot 20.1.4 Editor Figure 20.6 Editor Touch Nodes to set the signal node number through the universal knob, or touch to increase the nodes and to decrease. Touch the cell in the table area to set the frequency and amplitude of the corresponding node. Touch to activate the cell, adjust the value through the universal knob, or touch the cell again to call up the virtual keypad.

  • Page 204: Arbitrary Waveform Generator

    Arbitrary Waveform Generator The 2560B series supports a built-in arbitrary waveform/function generator. Refer to the datasheet for the detailed specifications of the AWG. Press the AWG key on the front panel, or touch the menu Utility > AWG menu to display the AWG menu shown in figure 21.1.

  • Page 205: Other Settings

    Arbitrary Waveform Generator 21.1.1 Other Settings • Touch Setting to display the Other Setting menu shown in figure 21.3. • Touch Output Load to toggle between 50 Ω and High-Z. – The selected output load value must match the load impedance. Otherwise, the amplitude and offset of the output waveform of AWG will be incorrect.

  • Page 206: Save/Recall

    Save/Recall Oscilloscope setups, waveforms, pictures, and CSV files can be saved to internal oscilloscope memory or to a USB storage device. The saved setups, waveforms can be recalled later. The oscilloscope provides a USB Host interface on the front panel to connect an USB device for external storage. 22.1 Save Type The oscilloscope supports setups, waveforms, pictures and CSV files storage.

  • Page 207: Internal/External Save And Recall

    Save/Recall a CSV file will take long time and will occupy a large amount of memory on a USB storage device. It’s recommended to save the data as binary file and then convert it to CSV file on a computer. Table 22.1 shows the relationship between the save types and save/recall operations.
  • Page 208 Save/Recall Recall the specified oscilloscope setting. 1. Connect the signal to the oscilloscope and obtain stable display. 2. Press Save/Recall key on the front panel to enter the Save menu function menu. 3. Touch Recall to select Save mode. 4. Touch Type to select the type of format. 5.

  • Page 209: File Manager

    Save/Recall 22.3 File Manager The 2560B file manager has similar style and operation with the Windows operating systems. Figure 22.3 File Manager Window • Left Window: Displays a list of available drives and internal folders. – The selected folder has an icon with a blue background. –...
  • Page 210 Save/Recall Figure 22.4 Save As...

  • Page 211: Utility Menu

    Utility Menu This function module supports the oscilloscope’s system-related function, such as system status, language, sound and some other advanced setting, such as do self-cal, update and remote interface configure. 23.1 System Setting 23.1.1 View System Status To view the system status: 1.

  • Page 212: Screen Saver

    Utility Menu The languages that currently available are Simplified Chinese, Traditional Chinese, English, French, German, Spanish, Russian, Italian, and Portuguese. 23.3 Screen Saver When the oscilloscope enters the idle state and holds for a certain period of time, the screen saver program will be enabled.

  • Page 213: Usb Device

    Utility Menu 23.4.2 USB Device To set the oscilloscope to communicate with a PC via USB: 1. Install the USBTMC device driver on PC. Suggest you install NI Vista. 2. Connect the oscilloscope with PC using a standard USB cable 3.

  • Page 214: Options

    Utility Menu 23.5 Options The 2560B series provides a few options to enhance its functionality. Contact your local BK Precision sales representative or BK Precision’s technical support to get the corresponding option key. To view the Options window shown in figure e23.5: Figure 23.5 Options Window...

  • Page 215: Do Self-Test

    Utility Menu 23.7 Do Self-Test Self-test includes a screen test, keyboard test, and LED test. 23.7.1 Screen Test 1. Press the Utility key on the front panel to enter the Utility menu. 2. Touch Do Self Test to enter the Self test menu. 3.

  • Page 216: Keyboard Test

    Utility Menu 23.7.2 Keyboard Test Keyboard test is used to test the keys and knobs. To perform a keyboard test: 1. Press the Utility key on the front panel to enter the Utility menu. 2. Touch Do Self Test to enter the Self test menu. 3.

  • Page 217: Led Test

    Utility Menu 23.7.3 LED Test LED test is used to test the LEDs. 1. Press the Utility key on the front panel to enter the Utility menu. 2. Touch Do Self Test to enter the Self test menu. 3. Press the LED Test softkey to enter the keyboard test interface, as the picture shown below. Figure 23.8 LED Test 4.

  • Page 218: Start Self Cal

    Utility Menu 23.8 Start Self Cal The self-calibration program can quickly calibrate the oscilloscope to reach the best working state and the most precise measurement. It is recommended to perform a self-calibration if the change of ambient temperature is more than 5 ℃. Note: Make sure the oscilloscope has been warmed up or operated for more than 30 minutes before the self-calibration.

  • Page 219: Remote Control

    Remote Control The 2560b series provides a LAN port and a USB Device port which can be used for remote control in multiple ways. 24.1 Web Browser A built-in web server provides an approach to control the oscilloscope by a web browser. It doesn’t require any additional software to be installed on the controlling computer.

  • Page 220: Other Connectivity

    Remote Control Figure 24.2 Interface 24.2 Other Connectivity The 2560B series also supports remote control of the instrument by sending SCPI commands via NI-VISA, Telnet, or Socket. For more information, refer to the programming guide of this product.

  • Page 221: Troubleshooting

    The commonly encountered failures and their solutions are listed below. When you encounter those problems, please solve them following the corresponding steps. If the problem remains still, please contact BK Precision. The screen is still dark (no display) after power on 1.
  • Page 222 3. Make sure that the USB storage device being used is flash storage type. This oscilloscope does not support hardware storage type. 4. Restart the instrument and then insert the USB storage device to check it. 5. If the USB storage device still cannot be used normally, please contact BK Precision.

  • Page 223: Service Information

    Service Information Warranty Service: Please go to the support and service section on our website at bkprecision.com to obtain an RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device.

  • Page 224: Limited Three-Year Warranty

    LIMITED THREE-YEAR WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of three years from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.

This manual is also suitable for:

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