Teledyne T3LVD Manuel utilisateur

T3LVD Voltage Probe Manual

Low Voltage Dierential Probe

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Contents

General Safety Summary .................................................................................... 1

Safety Terms and Symbols .................................................................................. 1

Product Overview ................................................................................................ 2

Key Features .................................................................................................. 2

Applications ..................................................................................................... 2

Product Description .............................................................................................. 2

Making Measurements ......................................................................................... 4

Safe Probing ......................................................................................................... 4

Maintenance ......................................................................................................... 6

Specications ....................................................................................................... 6

Certications ......................................................................................................... 8

Safety Compliance ............................................................................................... 9

Environmental Compliance .................................................................................. 9

Warranty ............................................................................................................. 11

Teledyne Test Tools 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. Specications are subject to change without notice.

Page 1

Safety Instructions

To maintain the probe in a correct and safe condition, observe generally accepted safety

procedures in addition to the precautions specied in this section. The overall safety of any

system incorporating this product is the responsibility of the assembler of the system.

Symbols

These symbols appear on the probe and accessories or in this manual to alert you to important

safety considerations.

Precautions

Connect and disconnect properly. Always connect the probe input lead to the probe accessories

before connecting to a voltage source. Ensure the connections are secure before applying voltage.

Do not disconnect leads or accessories from a live circuit.

Use only within the operational environment listed Do not use in wet or explosive atmospheres.

Use indoors ony.

Keep product surfaces clean and dry.

Be careful with sharp tips. The tips may cause bodily injury if not handled properly.

Do not operate with suspected failures. Before each use, inspect the probe and accessories for

any damage such as tears or other defects in the probe body, cable jacket, accessories, etc. If any

part is damaged, cease operation immediately and sequester the probe from inadvertent use.

Operating Environment

The accessory is intended for indoor use and should be operated in a clean, dry environment.

Before using this product, ensure that its operating environment is maintained within these

parameters:

Temperature 0° C - 50° C

Humidity: ≤85% Relative Humidity

Altitude: Up to to 3000m

CAUTION of damage to probe or instrument, or WARNING of hazard to health.

Attend to the accompanying information to protect against personal injury or

damage. Do not proceed until conditions are fully understood and met.

ESD CAUTION Risk of Electrostatic Discharge (ESD) that can damage the probe

or instrument if anti-static measures are not taken.

DOUBLE INSULATION

Page 2

PRODUCT OVERVIEW

T3LVD20-200: +20 V, 200 MHz

Key Features

●Accurate and easy voltage measurements.

●Wide 200 MHz bandwidth.

●Differential signal input of +20V (DC + Peak AC).

●High differential input impedance of 1 MΩ / <3.5pF.

●Maximum common mode voltage of +60V.

●Combined single ended and differential

measurements.

●Use with any scope with a 50Ω or 1MΩ input and

BNC connector.

●Over-Voltage protection with dual indicators.

Teledyne Test Tools new T3LVD20-200 low voltage dierential probe is a wide bandwidth active

dierential voltage probe, featuring 200 MHz bandwidth, +20V (DC + Pk AC), fast and accurate

waveform capture, measurement accuracy of 2% and low test circuit loading.

This probe can be used with any oscilloscope having a 50Ω or 1MΩ BNC input.

Applications

●Embedded low voltage power design and power

component measurements.

●Low voltage consumer electronics and household

appliances.

●Domestic and industrial photo-voltaic (PV) system

design.

●Vehicle electronics.

●Industrial and military control electronics.

●Single ended and differential busses (CAN, CAN FD,

LIN, I2C, SPI, MIL-STD-1553B, UART, ARINC429, etc).

●Research and development.

●Universities, general electronics and education.

T3LVD20-200 Product Description

T3LVD20-200

Page 3

1) Measurement input cable

The T3LVD20-200 measurement input cables connecting to the DUT. The connection between the

T3LVD20-200 input cables and the DUT will usually be made using grippers or alligator clip

connectors (supplied).

2) Oset adjustment

This button allows the user to remove any common mode offset up to +60V.

3) Probe head to control box connection cable

This is a xed connection cable between the probe head and the control box, of approximately 70

cm in length.

4) Power supply connection point

The external power supply is connected via a standard USB type B port which can be powered

from the supplied external USB wall plug adaptor or from an oscilloscope USB port.

5) Overload alarm indicator

When the amplitude of the acquired waveform surpasses the probe voltage range limit the overload

indicator will light and a buzzer will sound. Immediately reduce the amplitude of the input waveform.

6) BNC output connector

The probe control box BNC output connector can be connected to an oscilloscope via a standard

BNC cable. The oscilloscope input impedance should be set to 50 Ohms. Use a 50 Ohm

feedthrough adaptor for oscilloscopes that only have a 1 MOhm input impedance.

Included Accessories

Alligator Clips 50 Ohm Feedthrough Termination

Gripper Clips Test Hook

BNC Output Cable

Page 4

USB Cable

Wall Socket USB Power Supply (no photo).

Making Measurements

• Ensure that the probe is being used within its input operating range. Use of the probe outside of its

operating range may result in damage to the probe.

• Connect the power supply to probe.

• Connect the output BNC connector of the probe to the input BNC connector on the oscilloscope

using the supplied BNC to BNC cable.

• Set the oscilloscope input impedance to 50Ω. If the oscilloscope does not have a 50Ω input impedance

capability then connect the supplied 50Ω Feedthrough Termination between the BNC cable and the

oscilloscope at the oscilloscope end. Use the oscilloscope high input impedance 1 MΩ setting on

the oscilloscope’s input when making measurements using the external 50Ω Feedthrough

Termination.

• Set the oscilloscope’s input coupling to DC and channel attenuation ratio to 10:1 for correct

scaling.

• With the probe inputs shorted together, adjust the oscilloscope’s trace to the zero position using the

offset adjustment 2 shown on page 2. Connect the probe’s output BNC connector to the

oscilloscope’s input BNC connector using a BNC to BNC cable.

• Connect the probe to the circuit under test and make measurements. The main body of the probe

should be kept away from high voltage pulse circuits to minimize interferance.

• After the test remove the probe from the circuit under test.

• If measuring a low frequency waveform in a circuit containing high frequency noise components,

the measurement result might be inuenced by the high frequency noise components. Consider

Accessories

Alligator Clips

Gripper Clips

Test Hook

BNC 50Ω Feedthrough Termination Adapter

BNC Output Cable: 1 m, BNC - BNC Coaxial Cable

USB Cable: 1.5 m, Type A Male - Type B Male

Wall Socket USB Power Supply: Input: 100 V - 240 V, Output: 5 V / 1 A

using the oscilloscopes’ bandwidth limit to reduce the high frequency noise.

Safe Probing

This device is designed to comply with Safety Standards and has been thoroughly tested for safety

prior to shipment. However, mishandling during use could result in injury, as well as damage to the

device. Be certain that you understand the instructions and precautions in the manual before use.

We disclaim any responsibility for accidents or injuries not resulting directly from device defects.

To avoid short circuits and potential hazards, follow these warnings and precautions:

• Never attach the probe to a circuit that operates over the maximum rated voltage to earth.

• While connected to, and measuring, a live circuit do not touch the Alligator Clips / Gripper Clips /

Test Hooks or the conductor being measured.

• Be careful to avoid damaging the DUT conductor insulation while taking measurements.

• Make sure that the oscilloscope connected to this device's output BNC connector is equipped with

protective earthing with double-insulation construction.

• Do not allow the T3LVD probe to get wet, and do not take measurements with wet hands. This may

cause an electric shock.

• Read and observe all warnings and precautions relating to electrical safety for the measuring

instrument (typically an oscilloscope) being connected to the probe.

• Do not store or use the probe where it could be exposed to direct sunlight, high temperature,

humidity, or condensation. Under such conditions, the probe may be damaged and insulation may

deteriorate so that it no longer meets specications.

• Before using the probe for the rst time, verify that it operates normally to ensure that no damage

has occurred during storage or shipping. If you nd any damage, contact your dealer or a Teledyne

LeCroy representative.

• This device is not designed to be water or dust proof. To avoid damage, do not use it in a wet or

dusty environment.

• To avoid damaging the probe cable and power supply cable, do not excessively bend or pull the

cables.

• When performing continuous measurements, it is necessary to be aware that the offset voltage

may drift, depending on factors such as the ambient temperature and probe temperature.

• Accurate measurements may be impossible in locations subject to strong external magnetic elds,

such as transformers and high-current conductors, or in locations subject to strong external electric

or magnetic elds, such as radio transmission equipment.

Page 5

Page 6

Maintenance

• Keep the probe dry and clean.

• Clean the probe with a dry cloth, do not use liquid cleaning agents.

• After use put the probe back in its case and store in a clean and dry place out of the sun.

• To maintain the working life of the probe do not pull on, over twist or knot the connecting cable.

Specications

Electrical Specication Probe Specication

Bandwidth (-3dB) 200 MHz (see gure 1)

Rise Time < 1.75ns

Accuracy + 2%

Attenuation Ratio 10:1

DC + Peak AC (Maximum Differential Voltage) + 20V

Maximum Common Mode Voltage + 60V

Maximum Rated Input Voltage To Ground + 60V

Input Impedance

Single Ended To Ground 500kΩ

Differential 1MΩ

Input Capacitance

Single Ended To Ground < 7pF

Differential < 3.5pF

Probe Output Voltage Into Oscilloscope 50Ω Input + 2V

Offset (Typical) + 2mV

Offset Adjustment Range (Typical) + 95mV

CMRR

50Hz / 60Hz > 80dB

10MHz > 50dB

Noise (Vrms) 6mV

Overload Indicator Voltage Threshold > 20V

Delay Time

Probe 11ns

BNC Cable (1m) 5ns

Overload Indicator When Overload Occurs Red Indicator Illuminates And

Buzzer Sounds

Probe Load Requirement 50Ω

Power Supply Wall Socket USB Power Supply 5V / 1A

Page 7

Figure 1: Frequency Response Curve

Mechanical And Environmental Characteristics Probe Characteristic

Differential Input Cable Length 15cm

BNC Output Cable Length 1m

Probe Weight 172g

Probe Dimensions

Probe Head 116mm x 22mm x 15mm

Control Module 124mm x 49mm x 27mm

Pollution Level 2

Operating Temperature 00C - 500C

Storage Temperature -300C - 700C

Operating Humidity < 85% RH

Storage Humidity < 90% RH

Operating Altitude 3000m

Storage Altitude 12000m

Warranty 1 Year Return To Teledyne LeCroy

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