1.3 m E3661B— 1.6 m E3662B— 2.0 m
Contents
1. An optional monitor mounting kit is available Support Rails Two optional support rail types are available VXI Rail VXI rails are used with Keysight VXI mainframe equipment 14 Keysight Instrument Rack E7950A 1 3m E3661 B 1 6m E3662B 2 0 Non Keysight Rail Non Keysight rails are used with any non Keysight products that mount at the bottom of the EIA envelope The Non Keysight rails extend lower into the EIA envelope than the standard and the VXI rails Keysight Instrument Rack E7950A 1 3m E3661 B 1 6m E3662B 2 0m 15 3 SetUp This chapter defines the floor loading requirements and set up guidelines Floor Space and Loading Rack Space Observe floor loading requirements especially raised floors and ensure adequate space before moving your Keysight rack and all safety items while moving At maximum gross weight the floor must be able to support 677 kg sq cm 2000 lb sq in It is the customer s responsibility to determine the floor loading capacities at the installation site and for the entire route when moving Failure to do so could result in personal injury and or equipment damage Because the weight is concentrated on the four casters a maximum weight rack requires a reinforced floor Keysight Technologies recommends removing components and moving them separately when moving a rack over a floor especially a raised floor of unknown capacity Heavily loaded racks may require may require reinforced tiles or a st2. Support Notches U 44 45 I for Rails 15 875 I J 12 7 15 875 U 44 45 DF gt 15 875 PS _v127 Front Rear K of Cabinet Measurements 2U Envelope inmm E E 9 E E 9 o 9 US Every Fifth Rail Hole Notched ElA Spaced Mounting Holes 58b5b05b05b05bo Figure 2 8 Vertical Mounting Columns Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m r 11 Support Rails Each product or device installed requires one or more EIA unit increments One standard EIA rack mount increment is equal to 44 45 mm 1 75 in Equipment is supported in the rack by support rails running from front to back The rails are screwed to the vertical columns See Figure 2 6 for an illustration of a System II rail System II rails are used with any instrument that conforms to Keysight System ll product specifications and are the standard support rail Only after securing a pair of rails with screws can equipment be installed The mounting slots in the columns are positioned to make support rail placement convenient in EIA units Additionally they are marked to make matching the heights of matching support rails easy Front Column o E sl Clip Nut Rear Column Clip Nut Mounting Screw Rail Mounting Screw Figure 2 9 A System II Rail with Support Columns and Attaching Hardware Rack Lifting Hooks 12 Four lifting hooks are fitted to the top of the rack
3. RAG KS caia ati daliia s 10 A O O 10 Side Pane Siria dilatada 10 A tt etiiu staid ten oabaite dn catenin ated 11 Sa al Pee e eeta t ites it eer eral arte eet e dee meee e re 11 A on A EE 12 a A ee ree ee ee er ee er ee 12 ANTI UA AE att 13 CASE eh eG ha ete Nhe ate he ed la aa i eg eid a lal EE 13 E A ke Nd EET ETET EE E E etl toot ect tons adore lee eA 13 BOS Renee coroner O I SOR SN Ee e Me Rn ec A ee 18 A A 8 ed dae deh cech dee dads clans tame A EEA 18 die TCG y A o ana han bah iui Mibu anna ESE ESSET SE ATSETAT SEEST OSSES 13 Filler PANIC IS amando 14 A eRe coder en tee ectatens 14 Monto Monadas bollo henhan kanan aa dd a NS 14 SUR ri A ASS 14 A Rr TT ee eRe ee 14 A dtc cats cenit ate t eects bal SiN date adel ad gee AROMA Cid SON ak T9 o e o are E EE is 16 Flo r Space and TOG A nenen a E eaves E E 16 RACK SPACER tasers A o einai ios 16 Equipment Installation Guidelines cece eeceeeceeeeeeeeeeeneeeeseeceeeeneeeneeeceecteeeneeeniresneeeaeenteeeas 16 OT A Y 17 ls a A A A 18 E I CES is ain ran hata vata vaya lana alpaca Pa daii 18 A a 19 Acoustic Consideration Se caters even ona dali 20 Estimating Total NOSE en ee ZII nn te Fay re rer tr Geer er Or Verte erat oot 21 ii Keysight Instrument Rack E7950A 1 3m E3661 B 1 6m E3662B 2 0 e ROCES Mec A A ed CBD ND oD ND o od 18 23 KAE scars OA 23 Unpacking and Handling 5 act 2lase tant adtdaaataaataaataacdaaadeas sutatesadaeatancduccdadedsaneabtenantenncemarenanee 23
4. Together they can support the weight of a rack loaded to maximum recommend gross weight Each hook is capable of supporting 227 kg 500 lbs Maximum recommended gross weight is 816 kg 1800 lbs Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Anti tip Stabilizer Casters Levelers PDU PDU Install Kit Extractor Fan Standard on each Keysight rack is a retractable anti tip stabilizer mechanism Located at the bottom center of the rack it provides temporary additional stability when installing or removing equipment components The anti tip stabilizer should also be used when slide mounted components are in their extended position The stability work sheets should be used whenever a new system is configured or a change to a system is made to assure rack stability Use the ballast accessory P N C2790A when permanent additional stability is required See the worksheets in Appendix A to determine your ballast requirements Each Keysight rack is provided with four 3 inch diameter smooth rolling heavy duty casters to facilitate moves over short distances A fully loaded cabinet s maximum gross weight of 816kg 1800 lbs can overload a raised floor Levelers are located in each corner to level and stabilize the rack For maximum accuracy use a level while adjusting the feet A 110V option AW3 or 220V option AW5 PDU can be ordered with each rack A maximum of two PDUs can be installed in one rack A PDU
5. component 1 contributes 50 dB and component 2 contributes 65 dB Original equation with variable x 50 dB 65 dB x dB Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Divide the entire equation by 10 50 10 dB 65 10 dB x 10 dB Write the equation in powers of 10 dB units are Log base 10 units 10 1085 3090 Evaluate the left side of the equation 100 000 3 162 277 66 1019 3 262 277 6 10 Take the log of both sides of the equation return to dB units log 3 262 277 66 dB x 10 dB 6 51 dB x 10 dB Now solve for x x 65 1 dB Thus adding 50 dB to 65 dB results in a 0 1 dB increase in noise Example 2 What is the maximum estimated noise level of a product want to install if the system is currently rated at 65 dB and my limit is 70 dB Original equation with variable x x dB 70 dB 65 dB Divide by 10 x 10 dB 70 10 dB 65 10 dB x 10 dB 7 0 dB 6 5 dB x 10 dB 0 5 dB Write the equation in powers of 10 dB units are Log base 10 units 30940 1005 Take the log of both sides of the equation return to dB units x 10 dB log 0 5 6 837 dB Solve for x x 68 37 dB More than double the noise is required to increase the total noise from 65 dB to 70 dB Estimating Total Noise For a quick estimate of total noise from two sources see Figure 3 5 if the two dB levels are within 16 dB of each other If the difference is greater than 16 dB the effect of the lowe
6. installation kit is installed at the factory for the above PDU each installation kit has the capability for installation of a second PDU A second PDU can be ordered and installed by the customer Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 13 An extractor fan assembly can be ordered and consists of two 100 cubic feet per minute tube axial fans attached to a fan tray The fan assembly is attached to the top rear of the rack frame Filler Panels To ensure adequate cooling in racks using extractor fans all unused front panel space must be covered with blank filler panels an the rear door must be closed Filler panels are made from 1 57 mm 0 062 in aluminum formed to give the thickness of standard 4 7 0 187 in distance from the panel mounting flange The panels are supplied with EIA IEC mounting holes and attaching hardware The filler panels are designed for use with the rack with EIA IEC mounting holes and attaching hardware They can be ordered in 7 different sizes measured in EIA units mm or in Ballast Ballast is available in 30 lb kits and may be required when using slide mounted products and or keyboard work surface products Use the stability work sheets in the Procedures chapter to determine ballast requirements CAUTION Do not ship racks with ballast installed CAUTION Always mount ballast in the rear of the rack NOTE i The anti tip assembly is not a substitute for ballast Monitor Mount Kit
7. its install site Reconnect AC power Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Ballast Removal Remove the two screws holding the ballast on the rear rack columns Use caution not to drop the ballast when removing these screws CAUTION eo weighs 30 lbs and can damage equipment or cause personal injury if Ballast Replacement Attach the ballast to the rear columns using the two screws Ballast should be installed at the bottom of the rack resting adjacent to the rear base If ballast cannot be installed at the base of the rack it can be installed using the rack shelf Install additional ballast adjacent to each other so that they provide support for each other NOTE If ballast cannot be installed at the bottom of the rack it can be installed using the plain rack shelf The plain rack shelf can support up to four ballast 120 lbs units Remove ballast before moving or shipping a rack Door Bumper The rear and front door bumpers are self adhesive rubber bumpers stuck to the door Remove by prying off with a flat bladed screwdriver Apply by peeling off the adhesive cover and pressing into place Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 31 32 Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Keysight Technologies 2014 Printed in Malaysia E0814 Edition 2 August 2014 KEYSIGHT 5967 9318 TECHNOLOGIES http www keysight com
8. or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or disclosure of Software is subject to Keysight Technologies standard commercial license terms and non DOD Departments and Agencies of the U S Government will receive no greater than Restricted Rights as defined in FAR 52 227 19 c 1 2 June 1987 U S Government users will receive no greater than Limited Rights as defined in FAR 52 227 14 June 1987 or DFAR 252 227 7015 b 2 November 1995 as applicable in any technical data Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m i Contents 1 Safety and Regulatory IO MON laa aaa tte 1 A tte ie tee E hot alia aaa E anual 1 o A a chad Sh ute diet duct Such dite A acaeeans E E 1 A A A a 2 ROW arcada dci alte ah anida ia 2 Gre la AAA Eon EE CEE ECO mm hatoetaste aati oetpeeta itera Roemmesetonetenctnds 2 o baa ateheatiiaehvarlnmmnavalewedeateenedentaenedentdtesdenes 2 PCC SSE O LISS yuna satan ES a thes 2 nt nded Use of EQUINA aid 3 Cleaning neer a a E N Seer Sr re tr heer tren a cre rene erat Sr ere 3 2 Descriptio iD No 4 Electrical and Envio metales CCI a a ata et ales 4 LAN eses BEE CIIC AMONG PEA O A aii tits ates A Ra 5 PITTS PG CAS ete UPRO a a anes ee ater E A ite siuaes ence 6 Ventilation and Heat AA A testes neutacat 10 A A A 10 Standard
9. the rack stops 100 mm short of the rear door providing an access path for power and signal cables Standard Racks The following parts are included with every Keysight instrument rack Top The top of the rack incorporates a ventilation path through the roof of the rack and the convection current heat exit for the heat generated by the installed equipment Side Panels 10 Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Lift up and off side panels allow fast and easy access from either side for installation servicing and removal of equipment The top cap need not be removed to remove side panels Rear Door Standard is a right opening vented rear door with a lockable slam latch and sheet metal catch providing ventilation and security The rear door can be mounted to open from either the left or the right Mounting Columns The rack columns are a folded design Running up the inside of the fold is rectangular mounting slots for the rails in screw holes for securing the rails The hole placement is chosen to conveniently place EIA racks Every fifth rectangular hole is slotted to make counting easier See Figure 2 5 The mounting columns bolt into the corners of the frame and then accept supporting rails into pre configured mounting slots Each of two rails attaches between the front and rear columns The equipment is then mounted on a pai of support rails that run from front to back o 3 r N A o 15 875
10. E 590A 1 3 m E3661B 1 6 m E3662B 2 0 m KEYSIGHT TECHNOLOGIES Keysight Instrument Rack User s Manual Warranty THE MATERIAL CO S PROVIDED AS IS AND IS SUBJECT TO BEING CHANGED WI FUTURE EDITIONS TAINED IN THI HOUT NO FURTHER TO AXIMUM EX W KEYSIGHT gt om O THIS ONTAI MITED TO THE ERCHANTABIL ANUA Q U ENT ED HEREIN INCLUD R CONSEQUE ON ERFORMA Y INFOR NN gt TOOU WARRANTY TER IN THIS DOCU E TERMS SEPARATE AGR mA CE OF THIS DOCUM ATIO HOULD KEYSIGHT AND THE US EPARATE WRITT m PERMITTED BY DISCLAIMS ALL WARRANT THER EXPRESS OR AND ANY INFOR ESS THE FURNIS NG BUT NOT IMPLIED WARRA TY AND FIT ARTICULAR PURPOSE KEYS E LIABLE FOR ERRORS OR FOR TIAL DAMAGES ECTION WITH 1 GHT SHALL S DOCUMENT ICE IN THE APPLICABLE IES MPLIED WITH REGARD ATIO TIES OF FOR A OT CIDENTAL G USE OR m T CONTAINED EN AGREEMEN TTHAT CONFL S COVERING THE CT WITH E WARRANTY TERMS IN THE EMENT SHALL CO T OR OF EREIN R HAVE A WITH ATERIAL TROL DFARS Restricted Rights Notices If software is for use in the performance of a U S Government prime contract or subcontract Software is delivered and licensed as Commercial computer software as defined in DFAR 252 227 7014 June 1995
11. Fro A 8 8 A Uo E Computer Body 4U PS 44 5 mm Bezel lt no of o o Rear pa Peripheral Body o Door je Lo L 4 9 Rail 0 a oft Column Plo oe 609 6 S 655 0 gt a 716 0 gt lt 905 0 Figure 2 2 Side View of Top of Rack with Installed Components 6 Keysight Instrument Rack E7950A 1 3m E3661 B 1 6m E3662B 2 0 The dimensions of the E7590A are shown in Figures 2 4 All dimensions are in millimeters a o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 1111 25 o o 2 o S 25 EIA Units 2 o o o o o o o o o o o o o o o o o oO o o 1320 E 2 o o o o o o o o o o o o o o o o O jat Ro o o o o o o o o ot _ oS o o o o o o o o ied o o o o o o oO Oo o o o o o o o o Y Figure 2 4 E7590A Dimensions Front View Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m The dimensions of the E3661B are shown below 600 0 gt FS A O ee Te A ee o o a o o o o o o 1 o o o o o o o o i a o o o o o o 4 o o E pa o o o o o o o o o amp a o e o G o o a o E o o D El o oe o o o o G o 9 1422 4 3 H o 2 32 EIA Units ae 29 2 32 a a olg ojo U o ou So oS Do 450 8 oa O le O o o o o E o 1620 o o o o 465 1 o a o amp o O o o o a O o a 482 6 gt 2 o
12. Repaciadingune Rack for SiON mamada 26 REMOVAL AiG Re ee TIE Wits nicas 27 Reale DOO REMO dp rapto EA 27 Rear D r Replacement eanet nran rer Ea Er EEn dona e e a e a N 27 ORCC ABR SIMO Val EE E 27 A AA 27 SIDS GOVE REMOVAL atada 27 Sde COVER REA Md lidad iros be ee bare aa 28 Forehead Assembly REMO tie coi 28 Forehead Assembly Replacement atan radda tude A0bi tie 28 Bee OWS a SMOG cea sevens ee A ntact A O 29 e su snuateacaadeta dean deaasacadnaas aad aea ata tescante bem ane 29 ala AAA e EE det demedeedeedtions 29 Ant Stabilizer Replacement aa e a E a E EA 29 Rear DOOF RINGE REMOVA e bond o bosco see dance tease 29 A A A NO 29 Rail Removal A A ODIO 30 Rail Replacement qui AA EA EA AA A SS 30 Leveler or Caster REMOVA lioni E A o 30 Leveler or Caster Replace Me OOOO PRE OE E E E ELEAN ERORE 30 Ballast Remato 31 Ballast Replace 31 A tat ere crstadistedacadtiadatedaietaaataantenataicten Meaathaaibanitdaneadtaneaauteeutestenut 31 Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m iii 1 Safety and Regulatory Information For your protection this product has been tested for conformance to various national and international regulations and standards The scope of this regulatory testing includes electrical and mechanical safety electromagnetic emissions immunity ESD acoustics and hazardous materials Where required certifications are obtained from third party test agencies Certification marks appear on the product labe
13. ation after leveling the rack on the leveling feet and extending the anti tip mechanism is to load the rack from the bottom to the top Acoustic Considerations 20 Airborne audible noise is a primary concern for most system configurations Noise from forced convection thermal management solutions such as the extractor fan is directly proportional to the volume of air passing through the rack Total system noise should be considered during the design phase as it can affect areas where the system can be used operator comfort and safety and impact federal and regulatory agency compliance requirements for noise output ndividual product noise can augment increase system noise above extractor fan ratings due to constructive additive interference between various in place frequencies and decrease below the extractor ratings if destructive subtractive interference is present Total system noise is impossible to calculate completely accurately Therefore system acoustic performance should be measured to ensure that acoustic goals are met However assuming the worst case constructive noise levels some general estimating guidelines can be used to combine noise levels of system products used together Acoustic sound power and pressure data are logarithmic not linear Thus 50 dB 44 dB 51 dB Below are two examples to illustrate the point Example 1 What is the estimated sound power output of my two component system if
14. be extended from the rack for servicing without requiring the use of any tool A product requiring the use of a tool to facilitate servicing or extending the product is the definition of trained service personnel serviceable only When a trained service personnel serviceable only product is extended the use of the rack stabilizer assembly is required but counterweight ballast is not See Figure 3 3 pa M2 N oio gt Figure 3 3 Moment Illustration for Slide Mounted Products Weight and balance worksheet 18 1 Total the weight of operator serviceable slide mounted products A los B los C los D los 2 Total the weight of all fixed and trained service personnel serviceable products a lbs b lbs c lbs d lbs Keysight Instrument Rack E7950A 1 3m E3661 B 1 6m E3662B 2 0 3 Calculate the moment for both the operator serviceable slide mounted products M1 and the fixed and trained service personnel serviceable products M2 totals from above M1 A B C D 1 25ft ft lbs M2 16 1 ft lbs a b c d 1 00 ft ft lbs f M1 is less than or equal to M2 no additional counter weight is needed f M1 is greater than M2 use the formulas below to determine the required counter weight 4 Determine required counter weight if M1 is greater than M2 Force in lbs M1 M2 ft lbs 2 05 ft amount of force 2 05 ft Each ballast kit weighs 30 lbs Work Surface Keyb
15. e 3 1 Good and Bad Examples of Equipment Racking Vs Cooling Components generating the most heat should be placed closest to the top to avoid heating the equipment above it as the generated heat rises in the convection current Figure 3 2 shows projected temperature with and without the extractor fan Convection a Extractor Fan 1000 2000 3000 4000 5000 6000 Energy Output Watts Figure 3 2 Projected Temperature Vs Energy Output To ensure adequate cooling in systems using an extractor fan assembly all unused front panel space must be covered with blank filler panels and the rear door must be closed Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 17 Weight and Balance Slide mounted products and work surface keyboard products need weight and balance calculations performed to determine the need for ballast to reduce the risk of cabinet instability The worksheets for both are provided on the following pages If both slide mounted and work surface keyboard products are being used calculate both and add the results Slide Mounted Products To reduce the risk of rack instability when operator serviceable slide mounted products are installed use the following worksheet to determine the need for additional counterweight ballast If there are no operator serviceable slide mounted products in the rack this worksheet can be ignored An operator serviceable slide mounted product is defined as any product which can
16. e rack is damaged notify the carrier and the nearest Keysight Technologies Sales and Service office immediately CAUTION Do not lift an unpackaged rack with a fork lift Unpacking and Handling The lifting brackets supplied with the rack are suitable for lifting the rack when fully loaded Use the following procedure to remove the rack from the shipping base One person can perform this procedure 1 Cut the poly strap bands around the shipping container See Figure 4 1 WARNING Wear protective glasses while cutting the plastic bands around the shipping container These bands are under tension When cut they can spring back and cause serious eye injury Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 23 24 2 Lift the cardboard top cap from the shipping box 3 Remove the corrugated wrap from the pallet 4 Remove the packing materials Figure 4 1 Lifting the Packing Lid Off 5 Remove the folded ramp from the side of the rack 6 Remove the two bolts 1 holding the anti roll block in place at the bottom rear see Figures 4 2 Remove the block Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Figure 4 2 Unclamping 7 Remove the bolts 2 one on each side from the shipping clamp at the bottom of the frame They are bolted to the pallet 8 Remove the clamp 3 9 Unfold and position the ramp so that the block of wood under the ramp locks into the edge o
17. eb nach DIN 45635 Teil 19 With extractor fan accessory 61 dB LpA Accessories For information about rack accessories and compatibility see the Keysight Enclosures Solutions Product Catalog at www keysight com find racks on the Web or contact your Keysight Sales Representative This product is designed for use with specific electrical accessories i e PDUs and fans The use of any other accessory is not recommended or supported 2 Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 This product is designed for use with specific electrical accessories i e PDUs and fans The use of any other accessory is not recommended or supported Do not attempt to open or repair the Power Distribution Unit PDU There are no replaceable parts inside the PDU If the power cord or switch cord is frayed cut or damaged replace the entire PDU Intended Use of Equipment Cleaning The Keysight E7590A E3661B and E3662B Instrument Racks are intended to be used along with the recommended accessories for the installation of standard 19 inch rack mounted instruments from Keysight and other manufacturers Disconnect the power from the instrument rack before cleaning the instrument rack and accessories Use only a damp cloth to clean the surfaces of the instrument rack and accessories Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 2 Description The Keysight 19 inch Electronics Industries Association ElA rack
18. es removal and replacement procedures for the standard assembly Rear Door Removal Rear Door Replacement poe OO Se Top Cap Removal N Top Cap Replacement wo Side Cover Removal Open rear door Disconnect the bonding wire from the door Grasp the rear door support and lift the door straight up and away from the cabinet Hold the rear door by the support column Align the door hinge pins over the rack hinge holes Lower the door onto the rack hinge Reconnect the door onto the rack hinge Open the rear door all the way Remove the two outside mounting screws at the top rear of the rack From the rear of the rack pull the top cap toward the back a few inches Lift the top cap from the rack Open the rear door all the way From the rear of the rack place the top cap between the side covers and slide it forward until it stops Insert and tighten the two mounting screws at the top rear Close the rear door Remove the two mounting screws at the bottom of the rack Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 27 2 On the right side cover open the rear door and remove the two mounting screws on the upper door hinge that secure the hinge to the side panel 3 Grasp the sides of the side cover and pull it up and away from the rack Side Cover Replacement 1 Grasp the sides of the side cover and align it with the rack at a vertical angle with the bottom out and the top toward the to
19. f the pallet with the strip of wood forming a lip This holds the ramp in place while the rack is moved across the pallet and down the ramp See Figure 4 3 Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 25 Figure 4 3 Positioning the Ramp 10 Raise the leveling feet all the way up before moving the rack WARNING Make sure that the leveling feet on the rack are raised before you roll the rack Repackaging the Rack for Shipment Use the original packing material to repackage the empty rack for shipment Before shipment securely place a tag on the container and equipment to identify the owner and the service to be performed Include the rack model number To repackage the rack follow the repackage checklist below and refer to the unpacking instructions for details 1 Assemble the original Keysight packing materials Connect the loading ramp to the pallet Raise the leveling feet Push the rack up the ramp front first Secure the rack to the pallet with the shipping clamps shipping block and rear door support Place the anti static bag over the rack OA D 26 Keysight Instrument Rack E7950A 1 3m E3661 B 1 6m E3662B 2 0 8 10 Place the top cap packing material and loading unloading ramp on top of the rack Place the corrugated wrap around the rack Put the box top on the box Secure the top to the pallet with top to bottom plastic bands Removal and Replacement This section provid
20. l In addition various regulatory bodies require information under the headings below Please refer to the Safety Information guide provided with the instrument rack for additional important information This product and related documentation must be reviewed for familiarization with safety markings and instructions before operation The WARNING sign denotes a hazard It calls attention to a procedure practice or situation which if not done correctly or adhered to could result in injury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met The CAUTION sign denotes a hazard It calls attention to an operating procedure practice or situation which if not done correctly or adhered to could damage or destroy part or the entire product Do not proceed beyond a CAUTION sian until the indicated conditions are fullv understood and met Safety Warnings Grounding The following warnings and cautions are applicable to all Keysight racks Please observe all safety precautions and warnings This product has not been evaluated for connection to an IT power system an AC distribution system having no direct connection to earth grouna according to EN60950 This is a safety class product and has a protective earthing grounding terminal There must be an uninterruptible safety earth ground from the main power source to the product s input wiring terminals power cord or supplied cord set Whe
21. never it is likely that the protection has been impaired disconnect the power cord until the ground has been restored Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 1 Leakage Current WARNING Due to types of products that can be installed in this cabinet there is a risk of high leakage current 3 5 mA Reliable ground circuit continuity is vital for safe operation of this product To reduce the risk of electric shock earth ground connection is essential before connecting the power supply Never operate this cabinet with the ground conductor disconnected Power Limitations CAUTION To reduce the risk of overload do not load any single PDU with more than a maximum of 16 Amperes In addition do not load a single NEMA 5 15 or IEC 320 receptacle with more than 15 Amperes Cabinet Stability WARNING To reduce the risk of cabinet instability install counter ballast at the bottom rear of the cabinet before installing any computer components CAUTION To reduce the risk of cabinet instability fully extend the stabilizer before extending any devices Extend only one device at a time Do not stand or sit on any extended device Qualified service personnel should do all non operator servicing Acoustics Germany Acoustic noise a weighted sound pressure level LpA measured at the operator s position normal operation to ISO 7779 Laemangabe Schalldruckpegel LpA gemessen an Arbeitsplatz bei normalem Betri
22. oO o o o E El o o o pal a o D el o o o o o a o a o o o pei i ar a al Figure 2 5 E3661B Dimensions Front View Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 The dimensions of the E3662B are shown below 600 0 0000000000000 000000900000000000000000000000000000000000000000000000000 poaoocoocoooogooooaoooo ooooaoooooooooooooooonoooooooooooooooooooo0o0oooo0goo0i 1822 5 41 EIA Units mn mn ES S Fy S AB 450 8 slg 2020 465 1 482 6 l 131 81 101 31 Bs ob Figure 2 6 E3662 Dimensions Front View Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m Ventilation and Heat Dissipation Air is primarily drawn through the opening at the bottom of the rear door Through convection the heated air rises to the exhaust By either simple convection or a combination with an optional extractor fan the heated air exhausts though the vented top cap illustrated in Figure 2 7 Figure 2 7 Air Flow through the rack When the proper system is installed internal temperature rise is typically less than 15C 27F over ambient temperature Keysight recommends that you monitor the internal temperature of the rack The internal temperature should not exceed the heat rating of any installed instruments Cable Access The base of
23. oard To reduce the risk of rack instability when using a work surface as illustrated in Figure 3 4 use the following worksheet to determine the need for additional counterweight ballast If there are no work surfaces or keyboard mounting kits in the rack this worksheet can be ignored AAN 180 lbs Figure 3 4 Moment Illustration for Work Surface Weight and Balance Worksheet 1 Total the weight of the keyboard work surface product D ft 2 Total the weight of all fixed and trained service personnel serviceable slide mounted products a lbs b lbs c lbs d lbs 3 Calculate the moment for both the M1 and the fixed and trained service personnel serviceable slide mounted products M2 totals from above M1 180 lbs D ft ft lbs moment of rack with 180 lbs of force applied at D feet Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 19 M2 254 00 ft lbs a b c d 1 00ft ft lbs f M1 is less than or equal to M2 no additional counter weight is needed f M1 is greater than M2 use the formulas below to determine the required counter weight 4 Determine required counter weight if M1 is greater than M2 Force in lbs M1 M2 ft lbs 2 05 ft amount of force 2 05 ft Force in lbs M1 M2 ft lbs Height of drawer at its center The anti tip stabilizer is not a substitute for ballast Use the anti tip mechanism when loading or unloading equipment The first consider
24. or Location Indoor Location Indoor Location Indoor Location Indoor Location Environment Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 NOTE 100 120V 50 60 Hz racks Option AW3 are supplied with a power cord terminated with a NEMA 5 20P plug to fit a 20A receptacle 200 240V 50 60 Hz racks Option AW5 are supplied without a power plug the PDU power cord is un terminated The installer must install the correct plug for the country of installation All racks Option AW3 or AW5 must be connected to a dedicated 20A circuit Physical Specifications The physical specifications for the racks are listed below E7590A 1 3 m 51 9 in 6 m 23 6 in 905 m 35 6 in 140 6 kg 310 lbs E3661B 1 6 m 63 8 in 6 m 23 6 in 905 m 35 6 in 161 kg 355 lbs E3662B 2 0 m 79 5 in 6 m 23 6 in 905 m 35 6 in 177 kg 390 lbs All rack models can be loaded with a total of 1800 pounds of equipment Rear Door Top Cap Assy Side Cover 2 pics A Rear Door Hinge 2 pics Cp Anti Tip Stabilizer R amp amp _ Base Cove ite Leveler r hy T ay 4plcs oP a E24 Ww bits IF i aa afi Caster 4 pics Figure 2 1 Exploded view of Keysight Rack Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m Dimensions The side view in Figure 2 2 shows valid dimensions for the E7590A E3661B and E3662B Top Cover 1 1
25. p of the rack 2 Hook the top of the side cover over the top of the rack 3 With the side cover up flush against the frame replace the two mounting screws at the bottom of the rack 4 On the right side cover insert and tighten the two mounting screws on the upper door hinge that secure the hinge to the side panel Forehead Assembly Removal 1 Turn the power OFF Disconnect AC power to the rack 2 Remove top cap assembly refer to top cap removal 3 Unplug the PDU harness es from the back of the main power switch if present 4 Remove the three mounting screws behind the forehead assembly 5 Lift the forehead assembly up and away from the rack frame Forehead Assembly Replacement 1 Align the forehead assembly at the top of the rack frame so the three mounting holes match the frame holes and the mounting hooks on each side engage the mounting slots 2 Insert the three mounting screws through the frame into the forehead assembly 3 If appropriate attach the PDU harness es to the main power switch terminals Slip on connectors mate with spade terminals on the back of the switch Ensure each connector is fastened CAUTION Connections from the PDU front panel switch harness and the switch in the forehead must be made correctly to ensure normal PDU operation Failure to do so can result in PDU failure or inconsistent PDU operation 4 Replace the top cap refer to top cap replacement 5 If appropriate connec
26. r noise level is negligible zero for calculations 4 0 3 0 2 0 Increase in Larger dB 2 4 6 8 10 12 14 16 Difference in dB Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0m 21 22 Figure 3 5 Estimating System Noise For example the combination of a 50 dB noise and a 54 dB noise has a difference of 4 dB Using Figure 3 5 4 dB difference results in adding 1 4 dB to the higher noise resulting in an estimated 55 4 dB total noise Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 4 Procedures This chapter describes unpacking and repackaging the Keysight rack for shipment and common procedures such as positioning racks removal and replacement procedures Receiving This section contains information pertaining to unpacking inspection and reshipment Make sure that all doors elevators and passageways in route to the site are large enough to accommodate the rack The packaged physical specifications for the racks are listed below E7590A 1 52m 60in 76m 30in 1 7 m 67 in 140 6 kg 310 lbs E3661B 1 8 m 72 in 76 m 30 in 1 7 m 67 in 161 kg 355 Ibs E3662B 2 2m 87 5 in 76m 30in 1 7 m 67 in 177 kg 390 Ibs Floor elevators and lifting equipment must be of sufficient capacity If the rack package is damaged upon receipt request that the carrier s agent be present when the protective covering is removed Inspect the rack for damage scratches dents bent pieces etc If th
27. ructure on a raised floor Select a location for the rack that will afford adequate space for the door to open freely and slide mounted equipment to be extended The rack requires a minimum of 600 mm for rear door clearance Equipment Installation Guidelines 16 Several guidelines should be kept in mind when installing equipment into racks The two main considerations are weight and balance for slide mounted equipment and heat dissipation This section includes some worksheets for calculating the weight and balance for slide mounted products and an optional work surface A discussion of acoustic considerations is also included Always install equipment from the bottom to the top to keep the center of gravity as low as possible The order that you put them should be based on how well a given piece of equipment promotes or impedes heat removal if heat removal is an issue Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Cooling In the event that scratches are incurred during equipment installation note that touch up paint is available in a spray can via part number 6010 1522C Instrument racking influences airflow in two significant ways the proximity to the rear of the rack and placement of the highest heat producing pieces of equipment Equipment protruding the closest to the back should be placed lower to prevent them from trapping heat and creating eddy currents as shown in Figure 3 1 Good Poor Figur
28. rument Rack E7950A 1 3m E3661 B 1 6m E3662B 2 0m 29 Rail Removal This procedure is also used to remove a rail clamp 1 Remove the component mounted on the rail being removed NOTE Be sure to tag the cables disconnected for easy reconnection Rail Replacement e Remove the two rail mounting screws Lift the rail out of its notches in the support columns To remove the rail clamp remove the clamp screw and slide the clamp out of the rail groove Slide the rail clamp onto the rail Insert the rail tabs into the appropriate support column notches Insert and tighten the two mounting screws through the rail into the clip nuts on the column Reinstall the component Slide the rail clamp up to the rear of the component and insert the clamp screw Leveler or Caster Removal ai Turn the rack power switch OFF Disconnect AC power to the rack Carefully move the rack to an area with enough room to allow the rack to be laid on its side Remove all equipment components from the rack Carefully lay the rack on its side Unscrew the leveler or remove the castor by removing the four mounting nuts and pulling the castor off Leveler or Caster Replacement 30 gt Ol ge 00 NO With the rack on its side screw in the leveler or place the castor over the four mounting studs and attach with the four mounting nuts Carefully lift the rack to the upright position Install all equipment components Return the rack to
29. s options and accessories are designed specifically to meet the needs of instrumentation customers and make installing devices in rack mounting systems simple The instrument racks consist of a welded cold rolled steel frame with removable top sides and rear door casters leveling feet and an anti tipping mechanism as shown in Figure 2 1 Internally rails that hold your equipment lock into slots in the vertical mounting columns These plus keyed slots provide for quick and accurate placement Electrical and Environmental Specifications The electrical and environmental specifications for the instrument racks shown in the table below depend on the power distribution unit PDU option selected Option AW1 No PDU Option AW3 100 120V 50 60 Hz PDU Option AWS 200 240V 50 60 Hz PDU 100 120V 200 240V 100 120V 200 240V Input 50 60 Hz 50 60 Hz 50 60 Hz 50 60 Hz 200 240V 100 120V 200 240V 100 120V 50 60 Hz 16A Output 50 60 Hz 16A 50 60 Hz 16A 50 60 Hz 16A 1 IEC 320 019 1 IEC 320 C13 6 IEC 320 C13 1 1EC320C13 Receptacle Receptacle Receptacles Receptacle 10 IEC 320 5 NEMA 5 15R 9 NEMA5 15R C13 Receptacles Receptacles Receptacles Operating 0 Cto 55 C 0 Cto 55 C 0 C to 55 C 0 Cto 55 C 0 Cto 55 C Temperature 5 to 80 RH 5 to80 RH 5 to80 RH 5 to80 RH 5 to 80 RH Operating non non non non non Humidity condensing condensing condensing condensing condensing Operating Indo
30. t AC power to the cabinet 6 Turn the main power switch ON 28 Keysight Instrument Rack E7950A 1 3m E3661B 1 6m E3662B 2 0 Base Cover Removal 1 Remove the mounting screw located on the top edge center of the base cover 2 Pull the base cover away from the bottom of the rack Base Cover Replacement 1 Align the base cover at the bottom of the rack and roll the base cover until the mounting holes in the rack and base cover align 2 Insert and tighten the mounting screw Anti tip Stabilizer Removal 1 Extend the anti tip stabilizer until it stops 2 Lift the two sidebars that go into the rack frame and pull the stabilizer away from the rack Anti tip Stabilizer Replacement 1 Align the two extension arms with the opening at the bottom of the rack and insert the arms at an angle This allows the stop tabs to go into the rack cavity for the stabilizer 2 Push the anti tip stabilizer all the way into the rack Rear Door Hinge Removal 1 Remove the rear door refer to Rear Door Removal 2 Remove the two mounting screws from the rack column on the upper hinge also remove the two mounting screws in the side panel and lift the door hinge away Rear Door Hinge Replacement 1 Align the door hinge with the pressed nuts in the rear rack column 2 Insert and tighten the two mounting screws through the hinge into the column on the upper hinge also insert the two mounting screws into the side panel Keysight Inst
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