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UNCC ECGR 4101 - Mixed Signal Scope Assistance

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1 Mixed Signal Oscilloscope Agilent's Mixed Signal Oscilloscopes (MSOs) allow you to trigger on and view up to 20 time-correlated channels. For a small per-channel cost, 16 digital channels can be integrated with any 6000 Series These digital channels give you insight into today's complex hybrid analog-digital designs that traditional 2- and 4-channel oscilloscopes cannot. All Agilent MSOs come with proprietary MegaZoom display and memory technology to give you the most analog-like performance available. And no other oscilloscopes give you more options for the analysis and debug of digital serial busses. With an MSO, you are able to see multiple time-aligned analog, parallel, digital, and serially decoded waveforms on the same display. MSOs allow you to trigger on any combination of analog and digital signals – and in the case of the 6000 Series, on many popular serial bus protocols. You can do all of this with a single, easy-to-use oscilloscope interface. Features • Unique 2+16-channel and 4+16-channel mixed signal oscilloscopes (MSOs) models 2- or 4-channel DSO models • MegaZoom III technology provides industry-leading performance with the: • Most responsive deep memory • Highest definition color display • Fastest waveform update rates, uncompromised • Powerful triggering including analog HDTV, I2C, SPI, LIN, CAN and USB • More connectivity choices - LAN, USB, GPIB and XGA video are all included standard2 Basic Oscilloscope Operations:  To verify basic oscilloscope operations we need to press the Save/Recall on the front panel and the press the default setup soft key. [This makes the Oscilloscope to be configured with default settings].  Connect the Oscilloscope probe from channel 1 to the Probe Comp signal terminal on the front panel. Connect the probe’s ground to the ground terminal.  Press Auto scale soft key to see a basic waveform. The same procedure must be continued to verify the over and under compensated waveform in all the channels.  When we connect a probe that can be calibrated the Calibrate probe Softkey will be active then connecting the probe in the probe comp terminal will help us to calibrate the probes.3 Some of the important front panel controls:  Probe Compensation Terminals Use the signal at these terminals to match each probe’s characteristics to the oscilloscope channel to which it is connected.  Digital Channel Controls These controls switch the digital channels on/off, and can be used to select a digital channel for repositioning on the display  Vertical Position Control Use this knob to change the channel’s vertical position on the display. There is one Vertical Position control for each channel.  Channel On/Off Key Use this key to switch the channel on or off, or to access the channel’s menu in the soft keys.  Math Key The Math key provides access to FFT (Fast Fourier Transform), multiply, subtract, differentiate, and integrate functions.  Vertical Sensitivity Use this knob to change the vertical sensitivity (gain) of the channel.  AutoProbe Interface When you connect a probe to the oscilloscope, the AutoProbe Interface attempts to determine the type of probe and set its parameters in the Probe menu accordingly.  Channel Input BNC Connector Attach the oscilloscope probe or BNC cable to the BNC connector.  Utility Key Press this key to access the Utility menu, which lets you configure the oscilloscope’s I/O settings  File Keys Press the File key to access file functions such as save or recall a waveform or setup.4  Trigger Controls These controls determine how the oscilloscope triggers to capture data.  Run Controls Press Run/Stop to make the oscilloscope begin looking for a trigger. The Run/Stop key will illuminate in green. If the trigger mode is set to “Normal,” the display will not update until a trigger is found. If the trigger mode is set to “Auto,” the oscilloscope looks for a trigger, and if none is found, it will automatically trigger, and the display will immediately show the input signals.  Waveform Keys The Acquire key lets you set the oscilloscope to acquire in Normal, Peak Detect, Averaging, or High Resolution modes and lets you turn Real-time sampling off or on  Horizontal Delay Control When the oscilloscope is running, this control lets you set the acquisition window relative to the trigger point.  Horizontal Main/Delayed Key Press this key to access the menu where you can split the oscilloscope display into Main and Delayed sections, and where you can select XY and Roll modes  Horizontal Sweep Speed Control Turn this knob to adjust the sweep speed. These changes the time per horizontal division on the display. Display Interpretation: To display digital channels using Autoscale: When signals are connected to the digital channels, Autoscale quickly configures and displays the digital channels. • To configure the instrument quickly, press the Autoscale key. Any digital channel with an active signal will be displayed. Any digital channels without active signals will be turned off.5 • To undo the effects of Autoscale, press the Undo Autoscale Softkey before pressing any other key. This is useful if you have unintentionally pressed the Autoscale key or do not like the settings Autoscale has selected. To change the displayed size of the digital channels: 1 Press the D15 Thru D0 key. 2 Press the size softkey to select how the digital channels are displayed. To reposition a digital channel: 1 The Digital Select key is located on the front panel, just to the right of the display. Press either the up symbol or the down symbol on the Digital Select key to select the channel you want to move. The selected channel is highlighted in red. The “select” feature can also be used to highlight one of the digital channels for easy viewing. 2 Press either the up symbol or the down symbol on the Digital Position key, which is located below the Digital Select and D15 Thru D0 keys. This moves the displayed channel up or down. To change the logic threshold for digital channels: 1 Press the D15 Thru D0 key so that the Digital Channel Menu is displayed. 2 Press the


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