Tektronix LE160 Manuel utilisateur

xx Overview

The LE160 and LE320 Linear Equalizers are designed for

use with BERTScopes and performance oscilloscopes up to

32 Gb/s. They include two independent, fully differential, 9-tap

FIR channels that implement a ﬁxed tap-to-tap delay of 18 ps

(LE320) or 24 ps (LE160).

Use this document to get the hardware connected and the

application software installed. See your instruction manual for

more details and for other test conﬁgurations.

LE160 and LE320 standard accessories

The LE160 and LE320 Linear Equalizers are shipped with the

following accessories:

12 VDC power supply

Installation instructions

Two coaxial cables – 0.15 meter (6 in) length

Phase-matched coaxial cable pair –1.0 meter (39 in) length

USB cable, A-to-mini-B

Installation

The procedures that follow should be done in the order they

are presented:

1. Verify that all required equipment is available. (See

Required equipment,below.)

2. Make the hardware connections between the instruments.

3. Download and conﬁgure the application software on your

BERTScope or PC. (See Load the BERTScope software

on page 2.)

4. Verify the system functionality.

Required equipment

You need the equipment and software listed below to complete

these procedures.

BERTScope, model BSA175C or BSA286C

LE160 or LE320 Linear Equalizer unit

SMA cable, coaxial, male-to male (BSA accessory)

USB cable, A-to-mini-B 1

(2) 2.92 mm cable, 0.15 m (6 in), coaxial 1

2.92 mm cable, 1 m (39 in), coaxial, skew-matched pair 1

(Optional) PC w/Windows XP or Windows 7 32-Bit, or 64-Bit OS

1Standard accessory with the LE160/320

Make the hardware connections

Refer to the instrument connection diagram shown below when

doing the following steps.

1. Using the 6 in, 2.92 mm cables, connect the CH 1 output

from the linear equalizer to the input of the BERTScope.

2. Connect the data output from the BERTScope to the CH 1

differential input on the linear equalizer.

3. On the BSA instrument, connect the Clk out from the

pattern generator to the Clk in on the error detector.

4. Insert the mini-B end of the USB cable into the

USB-mini-B connector on the linear equalizer. Connect

the other end of the cable into the USB-A connector on the

BERTScope (or PC, if using as the controller).

5. Connect the power supply to the linear equalizer.

Note: The power supply must be connected to warrant

proper operation.

6. Power on all of the equipment and allow it to warm up

for 20 minutes.

LE160 & LE320

Linear Equalizers

Testing Application

ZZZ

Installation Instructions

*P071322200*

071-3222-00

Load the BERTScope software

The BERTScope or PC must be loaded with Linear Equalizer

application software. To load the software, do the following:

1. Go to the Tektronix Web site at www.tek.com.

2. Enter Linear Equalizer in the search ﬁeld and click Go.

3. Locate and double-click the link for the LE application

software.

4. Follow the on-screen instructions to download and install

the software.

5. After a successful install, test the functionality using the

procedure below.

Verify test functionality

1. Make the following settings on the BSA pattern generator:

17 GHz

PRBS-7

Clock 1.0 V

Data 500 mV

2. Launch the Linear Equalizer application.

3. Set the display to eye mode.

4. Look for jitter and an eye pattern @16 Gb; signal presence

indicates that the settings will work for the LE160, LE320

and other BSA instruments.

5. Verify that you can connect to the LE using the GUI

Connect button.

6. On the 4-tap panel, select the 16Gbps_0dB_Setup from

the drop-down list and then click the LOAD button as

shown.

7. Enable the BertScope channel and make the following

settings:

CH1toLE320CH1+

CH2toLE320CH1–

Horizontal: 20 ps/div

8. Set the BSA scope data output level to 250 mVpp.

9. The screen shot below shows the expected open eye and

parameters.

NOTE. For an optimal eye display, you may need to adjust the

taps to account for unit-to-unit and cabling setup variations.

Safety and compliance information

Use only the power supply provided with the product. Use of

other power supplies may damage the product.

Refer to the complete safety information before using this

product. Read the safety information in the instruction manual,

on the CD included with the product.

EMC information and requirements. This product is intended

for use in non-residential areas only. Use in residential areas

may cause electromagnetic interference.

Emissions that exceed the limits of applicable EMC standards

may occur when the equipment is connected to a test object.

Interface cables attached to this instrument must be of high

quality, shielded construction to ensure compliance with

regulatory EMC requirements.

Equipment Recycling. This product complies

with the European Union’s requirements according

to Directive 2002/96/EC on waste electrical

and electronic equipment (WEEE). For more

information about recycling options, check the

Support/Service section of the Tektronix Web site

(www.tektronix.com).

Contacting Tektronix

Web site: www.tektronix.com

Phone: 1-800-833-9200

Address: Tektronix, Inc.

Technical Support Center

14200 SW Karl Braun Drive

P.O. B ox 50 0

Beaverton, OR 97077

USA

Email: [email protected]

Warranty Information

For warranty information, go to www.tektronix.com/warranty

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