Keysight M8000 Series Bedienungsanleitung

Keysight M8000 Series BER

Test Solutions

J-BERT M8020A High-Performance BERT

M8030A Multi-Channel BERT

M8040A High-Performance BERT

M8041A, M8051A, M8061A, M8062A,

M8045A, M8046A,M8057A/B & M8054A

Tips for Preventing

Damage

Ensure proper grounding

•Always use the three-prong AC power cord

supplied with the product.

•Proper grounding of the instrument will

prevent a build-up of electrostatic charge,

which may be harmful to the instrument and

the operator.

•Do not damage the earth-grounding

protection by using an extension cable,

power cable or autotransformer without a

protective ground conductor.

•Check AC power quality and polarity; typical

AC voltage required is 100 V, 120 V, 220 V

±10%, 240 V +5 %/ -10 % or

380 V (3 Phase). Typical expected grounding

wire resistance is < 1 Ω, the voltage between

neutral and ground line is < 1 V. Install

uninterruptible power supply [UPS] if

necessary.

Read the warning labels and

specifications

•Do not exceed the values provided in the

datasheet or as indicated by the yellow

warning labels on the product.

•Refer to the Getting Started Guide for

conditions required to meet the listed

specification. Note information regarding

warm up time, instrument settings and

calibration/air-flow requirements.

•For example, a yellow warning label on the

front panel of the product indicates the

maximum input level. Do not exceed this

value. Do not operate outputs into open.

Terminate unused outputs with 50 Ohms.

Avoid overpowering the product

•Avoid damage by having an initial estimated

power value for the signal level to be applied

to the product. Overpowering the inputs may

cause damage to front-end components.

Do not exceed maximum input levels printed

on front panel of the product.

•Before turning on or turning off the

connected equipment or the DUT, reduce the

signal level to the minimum level. This should

help to prevent unexpected voltage swell or

sag affecting the input or the output of the

instrument.

•Properly apply a DC block, limiter or external

attenuator as additional safety measure, if

possible.

Ensure proper instrument cooling (air-

flow)

•Make sure that there is adequate clearance

of minimum 50 mm (2 inches) around vent

holes of the chassis to ensure adequate

airflow, especially when the instrument is

installed in the chassis.

•Some instruments, such as M8057A, have an

internal fan to keep the components cooled

to normal operating temperatures. Make sure

that there is enough clearance for adequate

air-flow.

•If the air-flow is restricted, the internal

operating temperature will be higher,

reducing the instrument’s reliability.

•Do not cover the ventilation holes.

•Periodically check and clean the cooling

vents of the instrument. Inadequate air-flow

can result in excessive operating

temperatures, which can lead to instrument

failures. Refer to the product datasheet for

allowable operating temperature range.

Follow electrostatic discharge

precautions

•Electrostatic discharge (ESD) can damage or

destroy electronic components. Whenever

possible, conduct testing at a static-safe

workstation.

•Ensure grounded environment and

personnel.

•Wear ESD suitable clothes and shoes.

•Keep static-generating materials e.g. plastic

boxes, tape, PC mouse, keyboard, etc. at

least one meter away from all components.

•Damage of components by ESD can occur at

voltages as low as 100 V.

•When testing a passive DUT, work on an ESD

workstation or utilize an air ionizer. Discharge

the test point by using a probe directly

grounded to a primary earthing terminal.

•When testing an active (powered) DUT, be

aware that the capacitors can hold charges

even after power is removed from the DUT.

Voltage on the board can exceed the

maximum input level of the instrument and

transient voltage may occur from DUT. Utilize

an inline attenuator (e.g. 3 dB) to reduce the

voltage entering the instrument.

Use Cable Discharger box to discharge

cables

•Loose cables may hold an electrostatic charge.

Before connecting any cable to product

connector, short the center and outer

conductors of the cable together to discharge

any transient voltages that may be present.

•You should use the cable discharger provided

with the initial product shipment and shown in

the following figures.

•Ground the box appropriately while

discharging a cable. Use the “GND”

connector of the box (as shown in the figure)

to the ground connector of the AXIe chassis.

For grounding, either use the accessories

provided with the discharger like the

grounding cable or an ESD mat which is

connected to the ground connector of the

AXIe chassis.

•Discharge your cables using the matching

connector e.g. 2.40 mm (also for 1.85 mm),

3.50 mm (also for 2.92 mm) and Mini-Coax.

You may stick the cable discharger box to

your instrument/AXIe chassis e.g. using the

fastener tape provided.

•Plastic fixtures can store charges and probing

powered devices can subject inputs to

damaging voltage and power levels. A poor

AC power supply into a product or DUT can

create AC transients, insufficient grounding,

or floating neutral lines which damages the

current to flow into or out of the instrument.

For more information about electrostatic

discharge, contact the Electrostatic

Discharge Association

www.esda.org.

Use proper lifting techniques

•Lift the instrument by the handles when

transporting.

•Avoid picking up the instrument with your

hand over the front panel. If the instrument

slips, damage may occur to the front panel

connectors.

•Use a cart or two persons to help move any

heavy instrument.

Use proper packing for transport

•Instrument damage can result from using

packaging materials other than those

specified. Never use styrene pellets in any

shape as packaging materials. They do not

adequately cushion the equipment and can

cause equipment damage by generating

static electricity.

•If possible, retain the original packaging for

re-use when shipping the instrument.

Get more information

•Consideration for instrument grounding

5989-9200ENA

•Bench instrument site check table 5989-

4992ENA

•Do STEP daily ESD self-check 5989-

5752ENA

•EOS/ESD limiter N9355CK01

Protect the input and output

connectors

•Avoid repeated bending of cables; a single

sharp bend can damage a cable instantly and

permanently.

•Limit the number of connections and

disconnections to reduce wear.

•Inspect the connectors prior to use; look for

dirt, nicks, and other signs of damage or

wear. A bad connector can ruin the good

connector instantly.

•Clean dirty connectors to prevent poor

electrical connections and avoid damage to

the connector.

Use proper connector care and

connection techniques

•Proper connector care and connection

techniques are critical for accurate,

repeatable measurements, and for extending

the life of your devices.

•Prior to making connections, be sure to read

all of the connector care information

provided with your product.

•While connecting a module which requires

the sync cable connection (e.g. M8062A,

M8051A) to the test setup, make sure to

connect the sync cable after completing the

other connections. Also, remove the sync

cable first while disconnecting the

connections.

•Follow the connector care and connection

techniques listed in the following tables.

Handling and Storage

DO NOT

•Keep connectors clean •Touch mating-plane

surfaces

•Extend sleeve or connector

nut

•Set connectors

contact-end down

•Use plastic end caps

during storage

Visual Inspection

DO NOT

•Inspect all connectors

carefully before every

connection

•

Use a damaged

connecter - ever

•Look for metal particles,

scratches, dents

Connector Cleaning

DO NOT

•Try compressed air first

•Use any abrasives

•Use isopropyl alcohol

•

Get liquid into plastic

support beads

•Clean connector threads

Gauging Connectors

DO NOT

•Clean and zero the gauge

before use

•Use an out-of-spec

connector

•Use the correct gauge type

•Use correct end of

calibration block

•Gauge all connectors

before first use

Making Connections

DO NOT

•Align connectors carefully

•Apply bending force to

connection

•Over tighten preliminary

connection

•Turn only the connector

nut

•Twist or screw any

connection

•Use a torque wrench for

final connect

•Tighten past torque

wrench "break" point

•Support attached cables

on bench or other surface

•Allow cables to hang

unsupported (cable

weight places strain on

connectors)

Protect the RF connectors

•Be careful not to bend, bump or flex any

device under test (DUT) connected to

instrument (such as filters, attenuators, or

large cables). This will reduce the amount of

strain placed on the connectors and the

mounting hardware.

•Ensure externally connected items are

properly supported (not freely suspended)

from the connectors.

•Always use torque wrench and gauge tools

for connecting RF connectors.

•Do not mix 50 and 75 Ω connectors and

cables.

Final Connection Using a Torque

Wrench

•Use a torque wrench to make a final

connection. Using a torque wrench

guarantees that the connection is not too

tight, preventing possible connector damage.

It also guarantees that all connections are

equally tight each time.

•Prevent the rotation of anything other than

the connector nut that you are tightening.

Using the Torque Wrench

•Hold the torque wrench lightly, at the end of

the handle only (beyond the groove). See the

following figure.

•Apply downward force perpendicular to the

wrench handle. This applies torque to the

connection through the wrench. Do not hold

the wrench so tightly that you push the

handle straight down along its length rather

than pivoting it, otherwise you apply an

unknown amount of torque.

You don’t have to fully break the handle

of the torque wrench to reach the

specified torque; doing so can cause the

handle to kick back and loosen the

connection. Any give at all in the handle

is sufficient torque.

•Tighten the connection just to the torque

wrench break point. The wrench handle

gives way at its internal pivot point as

shown in the figure. Do not tighten the

connection further.

Torque Wrench Information

Connector Type

Torque lb-in (Nm)

Precision 3.5 mm 8 (0.90) Torque Wrench 8710-1765,

but 5 (0.57) Torque Wrench 8710-

1582 will not damage

SMA 5 (0.57) Torque Wrench 8710-1582

Use the SMA torque value to connect

male SMA connectors to female

precision 3.5 mm connectors. Use the

3.5 mm torque value to connect male

3.5 mm connectors to the female SMA

(8 lb-in)

2.92 mm

(no dielectrics)

8 (0.90) Torque Wrench 8710-1765,

but 5 (0.57) Torque Wrench 8710-

1582 will not damage

Precision 2.4 mm 8 (0.90) Torque Wrench 8710-1765

Precision 1.85 mm 8 (0.90) Torque Wrench 8710-1765

Get the latest information about your

product

•For 14-slot chassis related information, see:

http://www.keysight.com/find/M9514A

•For 5-slot chassis related information, see:

http://www.keysight.com/find/M9505A

•For 2-slot chassis related information, see:

http://www.keysight.com/find/M9502A

•Check M8040A product information:

www.keysight.com/find/M8040A

•Check M8030A product information:

www.keysight.com/find/M8030A

•Check M8020A product information:

www.keysight.com/find/M8020A

•Check for updated service notes:

www.keysight.com/find/servicenotes

•For worldwide service locations information,

see: www.keysight.com/find/assist

CAUTION

This information is subject to

change without notice.

Edition 2.0, September 2019

Printed in Malaysia

www.keysight.com

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