Teledyne Lecroy MS-500 User manual

Operator's
Manual
MS-500 Mixed Signal
Oscilloscope Option
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MS-500 Mixed Signal Oscilloscope Option Operator's Manual
© 2017 Teledyne LeCroy, Inc. All rights reserved.
Unauthorized duplication of Teledyne LeCroy documentation materials
other than for internal sales and distribution purposes is strictly
prohibited. However, clients are encouraged to duplicate and distribute
Teledyne LeCroy documentation for their own internal educational
purposes.
MS-500 and Teledyne LeCroy are trademarks of Teledyne LeCroy, Inc.
Other product or brand names are trademarks or requested trademarks of
their respective holders. Information in this publication supersedes all
earlier versions. Specifications are subject to change without notice.
928336-00 Rev A3
April, 2017
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Operator's Manual
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Contents
Introduction......................................................................................................... 1
Technical Overview....................................................................................................... 2
Standard Hardware....................................................................................................... 3
Accessories................................................................................................................... 5
Connecting the Mixed Signal Device ....................................................................7
Connecting to the Oscilloscope................................................................................... 7
Digital Connections.....................................................................................................10
Digital Setup...................................................................................................... 11
Digital Logic Setup......................................................................................................11
Digital Group Setup.....................................................................................................13
Displaying Digital Traces............................................................................................ 14
Renaming Digital Lines...............................................................................................15
Digital Triggering ............................................................................................... 16
Setting Up Digital Triggers .........................................................................................16
Pattern Trigger ............................................................................................................17
Edge Trigger ................................................................................................................20
Width Trigger...............................................................................................................21
Glitch Trigger...............................................................................................................22
Interval Trigger............................................................................................................23
Dropout Trigger ...........................................................................................................24
Qualified Trigger.......................................................................................................... 25
Reference.......................................................................................................... 26
Returning a Product for Service................................................................................. 26
Technical Support.......................................................................................................27
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MS-500 Mixed Signal Oscilloscope Option
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Welcome
Thank you for purchasing a Teledyne LeCroy MS-500 Mixed Signal
Oscilloscope Option.
The MS-500 is a powerful solution for the challenge of measuring multiple,
mixed signals in a single oscilloscope. An enhancement to Teledyne
LeCroy oscilloscopes, the MS-500 extends their testing range by adding
18 or 36 digital channels for display or triggering.
This MS-500 manual assumes that you have a basic understanding of
discrete electronics, logic analyzers, and Teledyne LeCroy oscilloscopes,
specifically the model you will use with the MS-500. When necessary,
details on specific oscilloscope features are included in this manual.
Contact your nearest Teledyne LeCroy customer service center or national
distributor if anything is missing or damaged. We can only be responsible
for replacement if you contact us immediately.
Sincerely,
David C. Graef
Vice President and Chief Technology Officer
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Operator's Manual
1
Introduction
The MS-500 Mixed Signal Oscilloscope Option is a complete system that
adds digital acquisition and triggering capabilities to a Teledyne LeCroy
oscilloscope.
Once properly connected to the oscilloscope and the device under test,
you will be able to use the oscilloscope user interface for the following:
•Digital Logic Control: Set the logic threshold and hysteresis for each
lead bank, choosing from standard logic families or entering a custom
setting.
•Digital Group Management: Combine individual digital lines into bus
groups to be managed together. Give lines descriptive logical names,
regardless of the physical lead number.
•Digital Analysis: Display digital signals as single line traces or
collapsed bus traces. Many of the same tools available for analyzing
analog signals may be applied to digital signals.
•Digital and Combined Triggering: Choose to set an acquisition trigger
on a digital signal pattern or a combination of conditions using both
analog and digital signals.
The MS-500 is ideally suited for embedded controller testing where there
is a proliferation of analog signals coincident with digital signals. You can
easily debug signals using standard oscilloscope tools such as cursors,
measurement parameters, and zooming. Oscilloscopes compatible with
the MS-500 feature large, bright color displays to facilitate signal viewing,
plus all the connectivity and documentation capabilities needed to quickly
record and distribute information.
The MS-500 and MS-500-36 are identical except the MS-500-36 standard
configuration is for 36 channels. The MS-500-36 can be operated in 36 or
18 channel mode for higher performance. The MS-500 is configured as an
18 channel instrument and can be upgraded with an additional lead set to
support 36 channels. Both are referred to as MS-500 in this manual.
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MS-500 Mixed Signal Oscilloscope Option
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Technical Overview
The MS-500 is an external device that digitally samples waveform data at
up to 2 GS/s (for 500 MHz digital signals). Unlike a logic analyzer, it
operates only in a Timing Analysis mode, so it requires 4x oversampling to
determine the correct digital edge position, and does not require the user
to input a clock.
While in SINGLE, NORMAL, or AUTO trigger mode, the MS-500 repeatedly
samples each digital channel’s voltage level. If the voltage is greater than
the threshold voltage, the MS-500 stores a 1 in internal memory.
Otherwise, a 0 is stored.
The minimum high voltage level may be defined by the user (using the
hysteresis controls) up to 1.4 V above the threshold. The maximum low
voltage level may be defined to 1.4 V below the threshold. The minimum
signal swing is 100 mV. The indeterminate range of 50 mV around the
threshold voltage level is the level below which the MS-500 will not
operate. However, the MS-500 can support a signal as low as 100 mV only
if the input signal’s quality is adequate.
The MS-500 keeps sampling its inputs until the oscilloscope is put into
STOP trigger mode. Data is stored in a 50 Mpt internal memory that is
periodically transferred to the oscilloscope via the USB2.0 cable. If the
oscilloscope is triggering in SINGLE or NORMAL trigger mode, data is
acquired and transferred only when the trigger condition is satisfied. The
captured data is displayed on the oscilloscope in a time-aligned fashion.
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In any trigger mode (AUTO, NORMAL, SINGLE), pressing STOP trigger
cancels the acquisition, which leaves the previously acquired data
unchanged.
The USB2.0 cable provides downloading of trigger conditions from the
oscilloscope to the MS-500 and uploading of digital data from the MS-500
to the oscilloscope.
Standard Hardware
The MS-500 is delivered with the following hardware:
Part Description
QTY
MS-500
(MS-500-36)
Mixed Signal
Accessory
Provides 18- or 36-channel digital acquisition and
triggering.
1
16" Digital
Leadset
Interfaces the MS-500 to the device under test.
The lead set terminates in a 25 mil pin socket.
Micro-gripper probes of various sizes are available
as accessories from Teledyne LeCroy, and may be
connected to the lead set. The lead set is divided
into two banks. Each lead within the bank is color-
coded (to resistor color-coding standard) and has
an individual ground connection. In addition, there
are two common ground leads available for use.
1
(2)
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MS-500 Mixed Signal Oscilloscope Option
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Part Description
QTY
MS-500
(MS-500-36)
Bus Cable
1.3m cable to connect Mixed Signal Accessory to
the main oscilloscope unit, includes USB2.0 cable.
This connection provides timebase
synchronization, cross-triggering and power.
1
3" Flexible
Ground Lead
Lead for grounding individual digital inputs
5
(10)
Ground
Extender
Connect to ground port of any digital input and
make a simple signal and ground connection to a
0.1” square pin header.
20
(40)
Carrying
Case
1
Operator's
Manual
1
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Operator's Manual
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Accessories
You may purchase these optional accessories separately:
Accessory
Part Number
Description
Digital Leadset
MSO-DLS-18
MSO-DLS-36
Additional 16" leadset for inputting lines
D0-D17 or D0-D35
. This can be useful if you
have more than one device under test and
don't wish to disconnect/reconnect leads.
MSO-DLS-36 available for MS-500-36 only.
Large Gripper
Probe Set
PK400-1
Large gripper probe set for 0.10 inch
(2.54 mm) pin pitch. Includes 10 probes with
color-coded leads.
Medium Gripper
Probe Set
PK400-2
Medium gripper probe set for 0.04 inch
(1.00 mm) pin pitch. Includes 10 probes with
color-coded leads.
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MS-500 Mixed Signal Oscilloscope Option
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Accessory
Part Number
Description
Small Gripper
Probe Set
PK400-3
Small gripper probe set for 0.008 inch
(0.2 mm) pin pitch. Includes 10 probes with
color-coded leads.
Mictor Cable
MSO-MICTOR
Mictor Connection cable, 16" (40.64 cm),
36 channel connector
Interconnect
Cable
MSO-3M
Interconnect cable, 16" (40.64 cm), mates
with 3M connectors 2520-6002 and
2520-5002.
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Operator's Manual
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Connecting the Mixed Signal Device
Connecting to the Oscilloscope
To connect the Mixed Signal accessory to your oscilloscope:
1. Connect the Bus Cable to the L connector on the oscilloscope. Be
sure the head is turned so that the positioning wedge fits into the
groove at the top of the connector. Fasten the thumb screws.
2. Connect the USB 2.0 cable (attached to the Bus Cable) to any of the
USB ports on the oscilloscope.
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MS-500 Mixed Signal Oscilloscope Option
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3. Connect the other end of the Bus Cable to the MS-500. Again, be sure
to align the wedge and the groove. Fasten the thumb screws.
4. Connect the other end of the USB 2.0 Cable to the MS-500.
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Operator's Manual
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5. Connect the Digital Leadset to the Digital Inputs D0 – D17 connector
on the opposite end of the MS-500 and fasten the thumb screws.
For MS-500-36 repeat this step with the leadset labeled D18 – D35.
NOTE: Each digital line has a ground connection for optimal
performance. Two additional ground leads common to the whole
leadset are also available.
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MS-500 Mixed Signal Oscilloscope Option
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Digital Connections
Connect the Digital Leads to the digital lines you wish to observe (using
accessory micro-grippers, if desired).
Digital Banks
Each 18-channel lead set is divided into two physical banks of 9 leads,
and each bank is bundled with a plastic separator.
When using 36 channels, there are 4 banks of 9 leads.
Each lead bank (D0-D7, D8-D15, etc.) will share the same Logic Family (or
custom logic Threshold), regardless of how the individual lines are
assigned to digital bus groups.
Connector Colors
The leads in each bank use 9 repeating colors. The color sequence
corresponds to the resistor color code, making it easier to know the digital
line number without having to look at the label.
Standard Output Connection
The standard terminations on the digital leadset can be pushed directly
onto 25-mil pins. MicroGrippers or NanoGrippers may also be used to
probe the test circuit’s pins. Teledyne LeCroy provides a selection of
small, medium, and large grippers for various pitch sizes. A more
complete selection of adapter probes is available for most chips from
Emulation Technology Inc., Yamaichi Inc., and other manufacturers.
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Operator's Manual
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Digital Setup
Digital Logic Setup
Each lead bank requires a Logic Setup to determine the assignment of a 1
or 0, depending on the measured voltage relative to the Threshold.
Threshold Level
The threshold level determines how the input signal is interpreted. Input
voltages less than the threshold are converted to 0, while input voltages
greater than the threshold are converted to 1.
To set Threshold:
1. Go to Vertical > Digital 1 Setup to Display the Digital Setup dialog.
Open the Logic Setup tab.
2. For each available lead bank, Touch Logic Family and either chose
one of the standard families or User Defined.
TTL circuits use a threshold voltage level of 1.58 V. ECL circuits use a
threshold voltage level of -1.39 V.
3. If you chose User Defined, enter a custom Threshold and Hysteresis.
Custom threshold levels can be set between –10.0 V and +10.0 V.
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Minimum Voltage Swing (Hysteresis)
You can define the minimum high voltage and maximum low voltage
levels using the Hysteresis controls.
•Minimum high voltage may be set up to 1.4 V above the threshold.
•Maximum low voltage may be set up to 1.4 V below the threshold.
The minimum signal swing is 100 mV. The indeterminate range of 50 mV
around the threshold voltage level is the level below which the MS-500 will
not operate. However, the MS-500 can support a signal as low as 100 mV
only if the input signal’s quality is adequate.
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Operator's Manual
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Digital Group Setup
This procedure organizes the digital lines into groups, which correspond
to buses. The lines within a single group can be displayed individually, or
collapsed into a Bus trace.
You can set up a total of two, distinct groups: Digital1 and Digital2 (MS-
500-36 users can set up to four digital groups). Each group is designated
by its own Digital setup dialog.
Any lines from any lead bank can be combined into a single group, and
individual lines can be assigned to as many groups as you wish.
NOTE: While lines can be combined in any way, each lead bank can only
have a single logic setup, so be aware of that when choosing lines.
1. Go to Vertical > Digital 1 Setup to Display the Digital Setup dialog.
2. Open the dialog for the group you wish to configure (e.g., Digital1).
3. Check the box for each line to be added to the group. If a line is in a
bank other than the one displayed, touch the left or right arrow
buttons until that bank is shown on the dialog.
TIP: Use the All Lines Off and All Lines On buttons to quickly
deselect/select lines.
NOTE: Along the bottom of the dialog is an indicator for each line in all the
lead banks. On MS-500 options, all 36 possible lines are shown, even if
only D0-D18 are available. As add lines to the group, the indicator is
checked, so you can always see all the lines currently in the group. You
can also use these checkboxes to select lines.
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MS-500 Mixed Signal Oscilloscope Option
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Displaying Digital Traces
The Trace On checkbox is selected by default, so if you are connected to a
live input, you should see digital traces appear as you add lines to the
group.
To turn off the trace display, clear Trace On.
CAUTION. Do not use the All Lines Off or All Lines On buttons to
control the display. Doing so will erase your digital group set up.
Use the Trace On checkbox to show or hide the traces.
Position Traces
In Position, enter the number of divisions (positive or negative) relative to
the zero line of the grid where the display begins. The top of the first trace
appears at this position.
In Line Height, enter the total number of grid divisions each line should
occupy. The selected traces (Line or Bus) will appear in this much space.
Individual traces are resized to fit the total number of divisions available.
In the example below, each trace takes up one division.
To move the entire group of traces to another grid, touch the Next Grid
button at the bottom right of the dialog.
NOTE: This button will only appear if your oscilloscope has this capability.
Change Trace Style
When Trace On is enabled, digital Line traces show the state of each line
relative to the threshold. You can also view a digital Bus trace that
collapses all the lines in a group into their Hex values. At the far right of
the dialog, choose to either:
•Expand the group into individual line traces. The size and placement
of the lines depend on the number of lines, the Vertical Position and
Line Height settings.
•Collapse the group into a single bus trace.
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Digital line traces 1 division high starting at position 4 (top of grid).
Digital bus trace 1 division high starting at position 4.
Store Display
To store the entire group and display setup to an internal memory, touch
the Store button at the far right of the dialog. You can recall this setup to
the grid in the future by choosing Math > Memory Setup and selecting
Trace On for the respective memory.
Renaming Digital Lines
You can give each line a user-defined name to make the interface more
intuitive.
1. Touch the Dx button immediately below the Dx selection checkbox
(the words "Change Line Name" appear at the far left of the row).
2. Use the virtual keyboard that appears on the touch screen to enter a
new name. When finished, click OK.
The new line name now appears on the Dx button, instead of the
original line number. The number remains over the checkbox.
NOTE: The number of letters that appear will depend on the resolution of
your oscilloscope display. Keep names short so lines are easily
identifiable.
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MS-500 Mixed Signal Oscilloscope Option
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Digital Triggering
Setting Up Digital Triggers
To access the Trigger setup dialogs, do one of the following:
•Choose Trigger > Trigger Setup from the menu bar
•Press the front panel Trigger Setup button
•Touch the Trigger descriptor box
The main Trigger dialog contains the trigger type selections.
Other controls will appear depending on the trigger type selection (e.g.,
Slope for Edge triggers). These are described in the set up procedures for
each trigger.
The trigger condition is summarized in a preview window at the far right of
the Trigger dialog. Refer to this to confirm your selections are producing
the trigger you want.
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