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Service and Maintenance

2

Keysight U1818A/B Operating and Service Manual

33

Service Instructions

Adjustment

The probe amplifiers do not have internal adjustments and should not be opened.

Repair

The U1818A/B contain no user serviceable parts (with the exception of the probe

head). If service or repair is required, contact your nearest Keysight Technologies

Service Center. Refer to

“Sales and Technical Support”

on page 4.

Replacing the wires on N5381A and N5382A probe heads

When the wire leads of the N5381A and N5382A probe heads become damaged

or break off due to use, the wires can be replaced. Use the appropriate wire for

each probe head as follows:
– The N5381A uses the 0.005 inch tin-plated nickel wire. (01169-21306) or

0.007 inch tin-plated nickel wire. (01169-81301)

– The N5382A uses the 0.005 inch tin-plated steel wire. (01169-21304)

Recommended equipment

Below lists the equipment required to replace the wires. Equipment other than the

recommended can be used, provided minimum specifications are satisfied.
– Vise or clamp for holding tip
– Metcal STTC-022 (600°C) or STTC-122 (700°C) tip soldering iron or equivalent.

The 600°C tip will help limit burning of the FR4 tip PC board.

– 0.381mm (0.015in) diameter RMA flux standard tin/lead solder wire
– Fine stainless steel tweezers
– Rosin flux pencil, RMA type (Kester #186 or equivalent)
– Flush cutting wire cutters
– Magnifier or low power microscope
– Keysight supplied trim gauge (01169-23801)

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Содержание U1818A

Страница 1: ...Keysight U1818A B Active Differential Probe Operating and Service Manual...

Страница 2: ...rights customarily provided to the public to use modify reproduce release per form display or disclose commercial computer software or commercial com puter software documentation No additional govern...

Страница 3: ...n Legal Directives This symbol indicates that this is an Industrial Scientific and Medical Group 1 Class A product ICES NMB 001 indicates that this ISM device complies with Canadian ICES 001 Cet appar...

Страница 4: ...itoring and Control Instrument product The affixed product label is as shown below Do not dispose in domestic household waste To return this unwanted instrument contact your nearest Keysight Service C...

Страница 5: ...robe Heads 17 Other Available Accessories 21 Handling Guide 24 Connecting Disconnecting probe heads 24 Handling the probe cable 26 Handling the probe amplifier 27 Handling the differential browsers wi...

Страница 6: ...6 Keysight U1818A B Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Страница 7: ...2 3 E2678A single ended differential socketed probe head 18 Figure 2 4 E2675A differential browser kit 18 Figure 2 5 E2679A single ended solder probe head 19 Figure 2 6 E2676A single ended browser pro...

Страница 8: ...36 Figure 2 28 Cut the wires even with the trim gauge 37 Figure 2 29 N5382A wire bend down at about 30 degree 37 Figure 2 30 ZIF tip open position and ZIF probe head 39 Figure 2 31 ZIF tip closed pos...

Страница 9: ...Keysight U1818A B Active Differential Probe Operating and Service Manual 9 1 Introduction Product Overview 10 This chapter provides you the overview of Keysight U1818A B active differential probe...

Страница 10: ...ave and high speed digital design and validation in the wireline wireless communications and aerospace defence industries Figure 1 1 Keysight U1818A B active differential probe Key features of Keysigh...

Страница 11: ...able options available for Keysight U1818A B Option 001 Power probe bias cable Option 002 Banana plug cable Figure 1 2 Power probe bias cable Figure 1 3 Banana plug cable There are five probe head opt...

Страница 12: ...1 Introduction 12 Keysight U1818A B Operating and Service Manual Figure 1 4 E2695A differential SMA probe head for InfiniiMax probe Figure 1 5 N5380A InfiniiMax II 12GHz differential SMA adapter...

Страница 13: ...oduction 1 Keysight U1818A B Operating and Service Manual 13 Figure 1 6 N5381A 12GHz InfiniiMax differential solder in probe head and accessories Figure 1 7 N5382A InfiniiMax II 12GHz differential bro...

Страница 14: ...1 Introduction 14 Keysight U1818A B Operating and Service Manual Figure 1 8 N5425B 12GHz InfiniiMax ZIF solder in probe head Figure 1 9 N5426A 12GHz InfiniiMax ZIF Tip kit of 10...

Страница 15: ...e Manual 15 2 Service and Maintenance Operating Instructions 16 Other Probe Heads 17 Other Available Accessories 21 Handling Guide 24 Maintenance 32 Service Instructions 33 This chapter provides you t...

Страница 16: ...cable When the probe is ON you will see the green LED will lights up to indicate the probe is ready to be used Power probe cable Connect the power probe bias cable to the probe power port of spectrum...

Страница 17: ...ervice Manual 17 Other Probe Heads Besides standard probe head options below are some other probe heads that can be used with U1818A B with limitations Figure 2 1 N5451A differential long wire ZIF tip...

Страница 18: ...2 Service and Maintenance 18 Keysight U1818A B Operating and Service Manual Figure 2 3 E2678A single ended differential socketed probe head Figure 2 4 E2675A differential browser kit...

Страница 19: ...Service and Maintenance 2 Keysight U1818A B Operating and Service Manual 19 Figure 2 5 E2679A single ended solder probe head Figure 2 6 E2676A single ended browser probe head...

Страница 20: ...2 Service and Maintenance 20 Keysight U1818A B Operating and Service Manual Figure 2 7 E2669A differential connectivity kit Figure 2 8 E2668A single ended connectivity kit...

Страница 21: ...d Service Manual 21 Other Available Accessories There are more accessories that you can get from Keysight to work with U1818A B Figure 2 9 N2880A in line attenuator kit Figure 2 10 N2881A DC blocking...

Страница 22: ...2 Service and Maintenance 22 Keysight U1818A B Operating and Service Manual Figure 2 12 N2784A 1 arm probe positioner Figure 2 13 N2785A 2 arm probe positioner...

Страница 23: ...nce 2 Keysight U1818A B Operating and Service Manual 23 Figure 2 14 N2787A 3D probe positioner Figure 2 15 N5450A InfiniiMax extreme temperature cable extension Figure 2 16 E3620A 50W dual output powe...

Страница 24: ...onnecting Disconnecting probe heads When disconnecting a probe head from an amplifier pull the probe head connectors straight out of the socket as shown in Figure 2 17 When removing or disconnecting a...

Страница 25: ...lly inspect them by looking in the sockets on the amplifier Notice in Figure 2 19 that the pins are straight as they should be Figure 2 19 Straight pins in an amplifier If you connect and disconnect p...

Страница 26: ...e cable where it exists the probe amplifier and bend it well beyond its limit When storing the probe it is best to coil the cable in a large radius and avoid a net twist in the cable during the proces...

Страница 27: ...mplifier contains a delicate circuit board You therefore need to treat it carefully and take standard precautions for example not dropping it repeatedly or from large heights not getting it wet not sm...

Страница 28: ...e it can be difficult to hold the differential browsers for extended periods of time The ergonomic handle can be used to more comfortably hold the browser Figure 2 21 shows how to mount the browser in...

Страница 29: ...ed when used with the N5380A or E2695A SMA probe heads Use the Keysight N5380 64701 SMA Head Support to prevent damage Make sure to plug the probe amplifier into the SMA head before installing the SMA...

Страница 30: ...r the probe heads can be operated over a much larger range of temperatures If you need to make measurements at temperatures outside the range of the amplifier the N5450A Extreme Temperatures Cable Ext...

Страница 31: ...non conductive double sided tape Do not use super glue and do not get the low temperature hot glue on the actual probe head tip as this can damage the precision components of your probing system only...

Страница 32: ...ng and Service Manual Maintenance If the probe requires cleaning disconnect it from the instrument and clean it with a soft cloth dampened with a mild soap and water solution Make sure the probe is co...

Страница 33: ...iate wire for each probe head as follows The N5381A uses the 0 005 inch tin plated nickel wire 01169 21306 or 0 007 inch tin plated nickel wire 01169 81301 The N5382A uses the 0 005 inch tin plated st...

Страница 34: ...e tip an inch or so off the work surface for easy access If using a vise grip the tip on the sides with light force If using a tweezers clamp grip the tip either on the sides or at the top and bottom...

Страница 35: ...When the hole s are filled with solder use the flux pencil to coat the solder joint area with flux 4 Cut two wires to a length of about 12 7mm 0 5inches 5 Using tweezers put 90 degree bend at the end...

Страница 36: ...2 Service and Maintenance 36 Keysight U1818A B Operating and Service Manual Figure 2 27 Use trim gauge to gauge the wire 9 Cut the wires even with the trim gauge on the side opposite of the probe head...

Страница 37: ...U1818A B Operating and Service Manual 37 Figure 2 28 Cut the wires even with the trim gauge 10 When replacing wires on the N5382A Browser bend the wires down at about 30 degree angle Figure 2 29 N5382...

Страница 38: ...into the probe amplifier therefore it does not matter which way the tip is soldered Procedures and soldering tips for using N5425A InfiniiMax ZIF probe heads The InfiniiMax ZIF Zero Insertion Force Pr...

Страница 39: ...Service and Maintenance 2 Keysight U1818A B Operating and Service Manual 39 Figure 2 30 ZIF tip open position and ZIF probe head Figure 2 31 ZIF tip closed position with ZIF probe head inserted...

Страница 40: ...e enough flux for this small scale soldering Also put flux on the tips of the leads of the ZIF tip 3 Clean the soldering tip well then add a little bit of solder to the tip It may take several tries t...

Страница 41: ...and connection to a ZIF probe head is shown below Figure 2 32 shows a IC package which we will attach a ZIF tip to the first two package leads The target could also be via pads or signal traces Figur...

Страница 42: ...sight U1818A B Operating and Service Manual Figure 2 33 Solder added to target points 2 Use flux pen to add flux to the target points Also flux the tip of the lead on the ZIF tip at this time Figure 2...

Страница 43: ...Tip of soldering iron 4 Installation of ZIF tip Connect the ZIF tip to the ZIF probe head as shown in Figure 2 30 and Figure 2 31 This allows the probe to be used as a handle for the ZIF tip to allow...

Страница 44: ...r future connection It is best to use a non conductive pointed object such as a tooth pick or plastic tool Hold on the heat shrink part of the probe head to support the ZIF tip while releasing the lat...

Страница 45: ...Service and Maintenance 2 Keysight U1818A B Operating and Service Manual 45 Figure 2 37 Using non conductive tool to open the ZIF connector Figure 2 38 ZIF Tip left behind in DUT with ZIF latch open...

Страница 46: ...head into the ZIF socket and then close the ZIF latch with a non conductive tool Depending on the positioning of the ZIF tip you may need to support the body of the ZIF tip while closing the latch Th...

Страница 47: ...s subject to change without notice Always refer to the English version at the Keysight website for the latest revision Keysight Technologies 2013 2019 Edition 5 April 17 2019 Printed in Malaysia U1818...

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