Keysight M8000 Series User manual

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.
2

•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.
3

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
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
DO NOT
•Inspect all connectors
carefully before every
connection
•
Use a damaged
connecter - ever
•Look for metal particles,
scratches, dents
Connector Cleaning
DO
DO NOT
•Try compressed air first
•Use any abrasives
•Use isopropyl alcohol
•
Get liquid into plastic
support beads
•Clean connector threads
Gauging Connectors
DO
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
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.
4

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
5

This information is subject to
change without notice.
©Keysight Technologies 2019
Edition 2.0, September 2019
Printed in Malaysia
www.keysight.com