Teledyne Lecroy SAM40 Manual de usuario

SAM40

Sensor Acquisition Module

Operator’s Manual

928571-00 Rev A

SAM40

Sensor Acquisition Module

Operator’s Manual

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duplicate and distribute Teledyne LeCroy documentation for internal educational purposes.

Teledyne LeCroy is a trademark 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.

928571-00 Rev A,

October, 2017

700 Chestnut Ridge Road

Chestnut Ridge, NY 10977

1.800.5.LECROY •teledynelecroy.com

SAM40 Operator’s Manual 1

Key Specifications

Detailed specifications are maintained on the product page at

teledynelecroy.com.

Welcome

Thank you for buying a Teledyne LeCroy product. We’re certain you’ll

be pleased with the detailed features unique to our instruments. This

Operator’s Manual covers important safety and installation information

for your SAM40 Sensor Acquisition Module, along with basic operation.

Introducing SAM40 Sensor Acquisition Module

The SAM40 sensor acquisition module simply and quickly interfaces to

a supported Teledyne LeCroy 12-bit high definition oscilloscope (HDO).

The SAM40 acquires very low speed (kHz bandwidth) sensor and other

signals, while the HDO acquires higher speed analog, digital and serial

data signals. The HDO cross-triggers the SAM40, and the SAM40 sends

acquisition data to the HDO for time-synchronized display with the high

bandwidth HDO analog and digital channels.

An HDO with a SAM40 permits fast debug and validation of complex

deeply embedded control systems, mechatronics, and electro-mechanical

systems. An HDO with a sensor acquisition module cost-effectively

replaces multiple instruments with one consolidated view of system

performance. All math, measurements, pass/fail and other analysis

capabilities that can normally be performed on acquired oscilloscope

data can also be performed on the SAM40 acquisition data.

SAM40 data can be easily unitized and rescaled into appropriate sensor

units. More than 65 different SI and English system physical units are

supported for length, mass, temperature, angle, velocity, acceleration,

volume, force/weight, pressure, electrical, magnetic, energy and rotating

machine quantities. Math and measurements applied to rescaled

waveforms correctly read and convert to new units as required.

OVERVIEW

Bandwidth 40 kHz

Voltage/IEPE Input Channels 8, 16, or 24

Memory 2.5 Mpts per channel

Sample Rate 1 S/s to 100 kS/s

Vertical Resolution 24 bits

Materials List

Check that you have all the parts listed here. Contact Teledyne LeCroy

immediately if any part is missing.

•One (1) Sensor Acquisition Module

•One (1) AC Line (Power) Cord rated for the region

•One (1) USB 2.0 Cable Type A-to-B

•Three (3) BNC-to-BNC Cables

•One (1) Operator’s Manual

•One (1) SAM40 Registration Card

•One (1) Performance Certificate

•One (1) Declaration of Conformity

928571-00 Rev A

Front Panel

OVERVIEW

Back Panel

Power Switch BNC Connectors

RefClk In Trig In

USBTMC

Ethernet AC Power

Power Switch turns on SAM40, or

puts it into Standby Power mode.

BNC Connectors input signal from

IEPE/ICP-compatible sensors

(IEPE coupling) or a voltage input

(DC1MΩ, AC1MΩ, or Ground coupling).

RefClk In accepts synchronizing

10 MHz reference clock signal from

the oscilloscope.

Trig In accepts acquisition trigger

output from the oscilloscope.

USBTMC Port transmits data from

SAM40 to the oscilloscope.

SAM40 Operator’s Manual 3

1. Update the oscilloscope firmware to the

version matched to the latest version of

SAM40 firmware.

Note: The oscilloscope firmware must

remain in synch with the SAM40 firmware,

or you will not be able to install the latter.

The required version of each is listed on our

software download page.

2. Connect one of the included BNC cables

from SAM40 RefClk In to oscilloscope

RefClk In/Out.

3. Connect the other BNC cable from SAM40

Trig In to oscilloscope Aux Out.

4. Connect the USB 2.0 A-B cable from the

SAM40 USBTMC port (B connector) to any

oscilloscope host USB port (A connector).

5. Connect the approrpriately rated power

cord to the AC Power inlet.

6. Power on the SAM40.

7. Download the latest SAM40 firmware and

run the update (see p.11).

8. Connect sensor/voltage outputs to the BNC

input channels on the SAM40 front panel.

Connecting to the Oscilloscope

BASICS

Note: HDO8000A shown. Position of USBTMC, Aux Out and Ref In/Out varies on different oscilloscopes.

928571-00 Rev A

BASICS

When the oscilloscope is started with a SAM40

Sensor Acquisition Module connected, the

oscilloscope Vertical menu will offer an option for

Sensor Setup. Choose this to open the Sensor

Setup dialog.

Conguring Sensor Input Channels

Similar to the Channel Setup dialog, Sensor Setup is a collection of all the available sensor input channels, allowing you to quickly enable/disable a

channel. Behind it are the individual Sensor (SEn) conguration dialogs. Select "More..." near the closebox to display additional tabs.

SAM40 Operator’s Manual 5

BASICS

The Sensor dialogs contain many of the same settings as the Channel (Cn) conguration dialogs.

4 mA Bias

When the 4 mA Bias checkbox is selected, the SAM40 applies an excitation

current to IEPE/ICP sensor inputs. It is disabled when Coupling is set to

something other than IEPE.

Note: It is recommended to leave the 4 mA Bias checkbox deselected (the

default state) until sensors are connected, then select it prior to taking

measurements.

Bandwidth

The selectable bandwidth settings are Full (40 kHz), 2 kHz, 500 Hz, and

100 Hz. SAM40 inputs utilize a digital IIR lter to limit bandwidth.

Vertical Scale

As with channel traces, the Vertical Scale sets the amount of voltage (or

different vertical unit) represented by one Vertical division of the grid.

Coupling

When the input is an IEPE/ICP-compatible sensor, check <24 Vpk Input

(max. input for IEPE sensors) and select IEPE from the Coupling eld.

Otherwise, for a voltage input, you may leave <24 Vpk Input unchecked

and select DC1MΩ, AC1MΩ, or Ground coupling.

Note: Maximum input voltage is 50 Vpk for DC1MΩ, AC1MΩand Ground

coupling, but only 24 Vpk for IEPE coupling.

928571-00 Rev A

To rescale a sensor trace to a unit other than Volts or Amperes, on the

SEndialog choose Vertical Unit Others, then select the Sensor Setup

button to display the rescale settings:

Unit Category is the unit type, for example, Length or Velocity.

Units reflect the category selection, for example, a Length unit of meters

(m) versus a Velocity unit of meters per second (m/s).

Units/V (slope) is the multiplication factor (a) used to scale the acquired

sensor Voltage. Enter the number of the new unit that will equal 1 Volt.

Add is the amount of additive constant (b) to add to the rescaled value.

This value is always given in the new unit.

Rescaling

Most sensors output voltage values. The SAM40 rescale settings allow

you to change the units in which sensor output values are displayed to

a much wider selection than Volts or Amperes. They can also be used

for intelligent rescaling of output values, equivalent to using the Rescale

math function (y=ax+b), where:

• a is the multiplication factor (Units/V)

• b is the additive constant (Add)

Tip: Analog channels, parameters, and math functions can be rescaled

to many of the same units as sensors by using the Units subdialog next

to the main setup dialogs For instructions, see your oscilloscope online

Support or Operator's Manual.

As with channel rescaling, measurements performed on this sensor are

converted and displayed in the selected unit. However, math functions

are displayed in the unit that is logically appropriate for the result,

including complex results that must be derived from a table of core

SI units.

Units are automatically rescaled up or down within the list of SI unit

prefixes based on the relative size of the input signal.

BASICS

Example: Multiplying one sensor trace in Volts per meter by another

sensor trace in meters yields a result in Volts.

Example: 1000 V is displayed as 1 kV, while .1 V is displayed

as 100 mV. When the rescale value is 1 V = 1 Pascal (Pa), a 1

milliVolt (mV) reading is displayed as 1 mPa rather than .001 Pa

or 100e-3 Pa.

SAM40 Operator’s Manual 7

Sensor signals with unit conversion. The math function applied to these signals (F7) is automatically shown in the

logically appropriate unit for the product of Amperes and Volts—Watts.

The Units subdialog offers a selection

of alternative units in the equivalent

dimension to Watts for the F7 trace.

BASICS

For math functions and measurements parameters, a further unit override is possible on the Units subdialog, which shows a selection of units in the

equivalent dimension to the unit of the Fnor Pnsource trace. For example, while the default unit for the product of Volts and Amperes would be Watts, a