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Teledyne LeCroy WaveAce Integration with LogicStudio page | 1 of 10

WaveAce Integration with LogicStudio APPLICATION BRIEF

August 22, 2012

Summary

The WaveAce oscilloscopes

and LogicStudio logic-analyzer

module combine to form a

highly capable mixed-signal

instrument.

Introduction

Because almost all modern system designs combine both analog and

digital circuitry, debugging the design requires visibility into both analog

and digital signal paths, and, increasingly, serial-link circuitry. The basic

diagnostic tool of choice for the analog side is an oscilloscope, while digital

signals are often best observed with a logic analyzer. Thus, a well-rounded

test bench will carry both instruments. Unfortunately, logic analyzers are

often too slow, complicated, and costly. A mixed-signal oscilloscope is one

way to approach the issue, but another cost-effective approach is to

combine an oscilloscope with a logic-analyzer module. LeCroy’s WaveAce

oscilloscope and LogicStudio 16-channel logic analyzer combine with a

PC to form a mixed-signal instrument that addresses a wide range of

applications. LogicStudio supports both the WaveAce 1000 and 2000

series of oscilloscopes, as well as the WaveJet 300A series.

Summary of content (10 pages)

PAGE 1
WaveAce Integration with LogicStudio APPLICATION BRIEF August 22, 2012 Summary The WaveAce oscilloscopes and LogicStudio logic-analyzer module combine to form a highly capable mixed-signal instrument. Teledyne LeCroy Introduction Because almost all modern system designs combine both analog and digital circuitry, debugging the design requires visibility into both analog and digital signal paths, and, increasingly, serial-link circuitry.
PAGE 2
About LogicStudio LogicStudio, shown in Figure 1, provides 16 digital channels with a sampling rate of 1 GS/s on eight channels and 500 MS/s on the full 16 channels. It will detect pulse widths as small as 3.75 ns. An important element of LogicStudio is its companion software, which resides on a PC and provides the user interface for capturing, analyzing, and flexibly triggering waveforms.
PAGE 3
About the WaveAce When teamed with an oscilloscope such as LeCroy’s WaveAce series of instruments, shown in Figure 2, LogicStudio becomes a formidable mixed-signal debugging tool. The WaveAce oscilloscopes come in bandwidths from 40 MHz to 300 MHz and with sample rates of up to 2 GS/s. Figure 2: Shown is the WaveAce 2034 oscilloscope, which offers a 300-MHz bandwidth, four channels, and maximum sampling rate of 2 GS/s.
PAGE 4
Configuring the System A key feature of the combination of WaveAce and LogicStudio is its ability to import analog waveforms from the WaveAce and digital waveforms from LogicStudio and display them on a PC in one view. This is accomplished by connecting both instruments to the PC via USB cable and installing necessary PC software. A prerequisite is to download and install LogicStudio software, which is freely available from the LeCroy website.
PAGE 5
Configuring the WaveAce, LogicStudio, and PC hardware requires three interconnections: 1. A coaxial-cable connection between the WaveAce’s front-panel EXT TRIG input and LogicStudio’s TRIG OUT jack. 2. USB connections between the WaveAce and the PC and between the LogicStudio and the PC. Once these connections are established, open the LogicStudio software and turn on the WaveAce. A Device Finder wizard, shown in Figure 3, is found at the upper left-hand corner of the GUI or in the Devices menu.
PAGE 6
After clicking the Next button seen in Figure 3, the Device Wizard provides a diagram of the connections outlined above, shown in Figure 4. Figure 4: After confirming that the hardware is connected, the Device Wizard provides a diagram of all interconnections required for mixed-signal operation Clicking Next again brings up confirmation that the LogicStudio and WaveAce “have been successfully connected in MSO mode.
PAGE 7
Figure 5: The initial LogicStudio screen with its large waveform display area, channel indicators (left-hand column), and signal-display tools The Signals Control panel, which is the multicolored column of channel designators on the left-side of the LogicStudio GUI, provides for channel-by-channel modification of signal display. It is a simple manner to add or subtract channels using the large “plus” and “delete” buttons at the top of the column.
PAGE 8
Thus, in the case of the SPI signal, the nominal D8 channel was renamed and reconfigured for SPI decode in the manner shown in Figure 7. Figure 7: To ready the LogicStudio software for SPI decode, channel D8 was redesignated for SPI Decode as shown in the Type: field.
PAGE 9
With all channels connected in hardware and configured in software, select a run mode for the mixed-signal environment using the Auto, Normal, or Single buttons at the top right of the GUI. Figure 10 is a screen capture of Normal triggering. Figure 10: The LogicStudio screen shot shown here depicts the display of eight digital I/O channels as well as decoding of an SPI signal LogicStudio affords great flexibility in serial-data decoding as well as in triggering.
PAGE 10
Finally, LogicStudio is equally adept with the display of analog signals as it is with digital signals as shown in Figure 11. Figure 11: This LogicStudio screen capture demonstrates the software’s ability to display a mixture of analog signals, digital signals, and serial protocols as captured on the WaveAce oscilloscope. Displaying of signals such as the sine and ramp waves in Figure 11 is simply a matter of applying the same setup procedures described earlier to the analog signals.