Manuale d’uso / di manutenzione del prodotto J3188A del fabbricante HP (Hewlett-Packard)
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Installa tion and Reference Guid e HP J3188A HP 10Base-T Hub-16M MUCHO.BK : cvrf-r1.ft5 Page 1 Thursday, June 26, 1997 11:37 AM.
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HP 10Base-T H ub-16M (J3188A) Installation and Reference Guide MUCHO.BK : ch0.fm5 Page i Thursday, June 26, 1997 11:37 AM.
© Copyright 19 97 Hewl ett-Pack ard Company All Ri ght s Rese rved. This documen t contains in formation which is protected by copyright. Reproduction, adaptation, or translation without prior permission is prohibited, except as allowed under the copyright laws.
iii HP 10Bas e-T Hub-16M (J3188A) HP 10Base-T Hub-16M (J3188A) The HP 10Base-T Hub-16 M (J31 88A) is a m ultip ort re peat er with 16 twis ted- pair ports, and one AUI port. With thi s hub, you can con ne ct computer s, printe rs, and ser vers toget her for file sharin g.
iv HP 10Bas e-T Hub -16M (J 3188A) Features Networ k Con necti ons • Sixt een RJ- 45 ( twi st ed -pa i r) po r t s to connec t t o en d node s or other devices.
v Contents 1 Installin g the Hub Installing and Co nfiguring You r Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1. Verify included parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2. Connect the external tr ansceiver .
vi A Cables and Connectors Recommended Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Twisted-Pai r Cable/Connecto r Pin-Out s . . . . . . . . . . . . . . . . . . . . . . . A-3 Twisted-Pair Ca ble for Hub-to-Co mpu ter Network Con ne ction .
vii Additional Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2 Examples of Backup Li nks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3 How the Backup Function Works . . . . .
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1 Installing the Hub This chapter describes how to install the hub. Topics in t his chapter include ■ installing an d c onfiguring the hub ■ connect ing device s to the hub ■ connect ing hu bs toge ther ■ interpretin g hub LEDs MUCHO.BK : ch1.
1-2 Insta llin g the Hub Instal ling an d Confi gurin g Your H ub Installi ng the Hu b Installing and Co nfiguring Your Hu b To install an d configur e your hub, y ou must co mplete five basic t asks.
1-3 Inst alling the Hub Inst all i n g an d Co nfigu rin g Yo ur Hu b Installi ng the Hub 1. Plug the po wer cord into th e hub’s power co rd recepta cle and into an AC (alte rnatin g curr ent) p ower sou rce. If you are u sing an RPS a s your primary pow e r source, refer to the Cisco RPS Use r Guide for spec if ic instructions.
1-4 Insta llin g the Hub Instal ling an d Confi gurin g Your H ub Installi ng the Hu b 2. Check t he LEDs on t he hub’s fr ont panel. Whe n the h ub is powe red on, it performs a po wer-on se lf test. See the t ab le below for the LED pat te r n that o ccurs d uring th e self te st.
1-5 Inst alling the Hub Inst all i n g an d Co nfigu rin g Yo ur Hu b Installi ng the Hub 4. Mount the hub The HP Hub-16M ca n be mounte d in two ways: 1. in a rack or ca bine t 2. on a table The hardwar e for mount ing the hub is inc lud ed in the a ccessory kit (5064- 2053 ) packe d with the hu b.
1-6 Insta llin g the Hub Instal ling an d Confi gurin g Your H ub Installi ng the Hu b Table Mo unting To plac e the hub on a tabl e or other hori zontal surfa ce, no sp ecia l tool s are necessary . Apply the four feet inc luded in th e accessory kit onto the bo ttom of the hub.
1-7 Inst alling the Hub Inst all i n g an d Co nfigu rin g Yo ur Hu b Installi ng the Hub 5. Connect the hub to your network Recon nect th e hub t o eith er an AC power source or the RPS, d epend ing on which sour ce you are us ing . With the hu b mo unted, you ar e now ready to connect the hub to your netwo rk.
1-8 Insta llin g the Hub Instal ling an d Confi gurin g Your H ub Installi ng the Hu b Connecting Devi ces to the Hub To conn ect a d evice to th e hub, push th e RJ-45 p lug i nto th e RJ-45 jack unti l the tab on the plug clicks into plac e.
1-9 Inst alling the Hub Inst all i n g an d Co nfigu rin g Yo ur Hu b Installi ng the Hub In the foll owing illust ration, the first hu b is connec ted to two end node s and to a seco nd hub . Note the second h ub show s Port 16 con necti ng to a PC, us ing a straight th rough cable with the po rt in the MD I -X position.
1-10 Insta llin g the Hub Instal ling an d Confi gurin g Your H ub Installi ng the Hu b You can connect up to 30 hubs t ogether on a c ommon ThinLAN segm ent.
1-11 Inst alling the Hub Interpre tin g LED Sta tus Installi ng the Hub Connecting th e Hub-16M to a Fiber-Optic Backb one With an HP Fiber- Optic ex ternal tra nsceive r for 10Base -FL networ ks, you can connec t your hub t o a fiber-opt ic backbon e.
1-12 Insta llin g the Hub Interpreting LED Status Installi ng the Hu b Interpreting Hub Status LEDs The hub statu s LEDs indicate whether t he hub is funct ioning pr operly. For further de tails on error cond itions indica ted by the Sta tus LEDs, see chapt er 2, “Troublesh ooting”.
1-13 Inst alling the Hub Interpre tin g LED Sta tus Installi ng the Hub Interpreting Port Status LEDs The following t able provide s LE D port informat ion. LED St at e Mean in g of LED Twisted-pair Port (green) On Link b eat is d etect ed fro m th e at tache d no de.
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2 Troublesh ooting This cha pter describe s ways to troubl eshoot th e hub. Topics covered a re: ■ trouble shooting a ppr oaches ■ usin g a check list to diag nose t he hub ■ interpre ting the L.
2-2 Troubl eshoot ing Using a Chec klis t to Di agnos e the Hu b Trou bleshoot ing Using a Checklist to Diagnose the Hub Use the followin g table to diagno se the problem w ith your HP Hub-1 6M. Most problems with t he hub can be diagnosed using t he LEDs on its front panel.
2-3 Troubl eshoot ing LED Opera tio n Trou bleshoot ing LED Operation The tab les on th e follo wing p ages li st the hu b’s LEDs, their possible states, and d iagno stic t ips t o re solve an y er ror co ndit ions.
2-4 Troubl eshoot ing LED Ope ration Trou bleshoot ing ON * Fast Flash Fas t Flash ** A securi ty vio lat ion has oc cur red on the po rt that i s flas hing .
2-5 Troubl eshoot ing Hub M ainte nanc e Ta sks Trou bleshoot ing Hub Maintenance Tasks There are sever al hub mai ntena nce tasks you can per form. T hey incl ude: ■ testing the h ub only ■ clea ring a pas swor d fr om th e AS CII co ns ole ■ runnin g conn ec tivi ty tes t s Each of t hese t asks is d escribe d in t he fol lowing se ctions .
2-6 Troubl eshoot ing Hub M ainte nance Tas ks Trou bleshoot ing Running C onnectivit y Tests Both the hub and ca bling ca n be tested by running an end-to-en d comm unica- tions test -- a test that s.
3 Mana gin g the Hub This ch apter desc ribes the fe atures av ailabl e from an AS CII consol e. Topi cs include: ■ setting up the ASCII Console ■ console c ommand re ference The HP Hub-16M has SN.
3-2 Mana gin g th e Hub Settin g up the ASC II Con so le Managi ng the Hub Directly, Using A Ser ial Cable and a Terminal To dire ctly co nnect a termi nal to a h ub, fo llow t hese step s: 1. Connec t an ASCII t ermin al, or a PC emul ating an ASCII termina l, to th e RS-232 por t using an R S-232-C “nu ll modem ” c able.
3-3 Manag ing th e Hu b Settin g up the ASC II Cons ol e Managi ng the Hub Remotely, Using a Modem and a Terminal 1. Use a full-d uplex, asyn chron ous (c haracter- mode) mode m only. 2. Connect t he modem to the hub’s R S-2 32 port us ing an RS-23 2-C modem cable.
3-4 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub Console Command Reference Enter at l ea st th e fi r st two l ett er s of a comm an d to exe cu te i t, suc h as HE fo r the Help comm and. The Help co mmand displa ys a sc reen l ike t he foll owing, listing all com mands.
3-5 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub To configu re one of th e hub’s por ts f or dedicat ed use in a backup (redu nda nt) li nk to anot her hub. An HP Hub-16M allows you to use a ny two of its netw ork ports for a redundant link to ano th er hub in yo ur ne twork.
3-6 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub To enable or d isable the C isco Discovery Protocol (CDP) . The command t akes eith er an ON or an OFF a rgument . The in it ial setti ng is ON. O N enab le s the protocol. OFF disa bles it.
3-7 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub To termina te the co nsole session and reset t he consol e port ba ud rate to be automa tical ly sense d . The com mand also d isconnec ts the phone link if yo u accessed the co nsole us ing mo dems.
3-8 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub Configurin g for Network Management If the hub is to be manag ed from a ne twork ma nagement station, it m ust use the sa me network ing prot ocol as the ne twork ma nagement station .
3-9 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub To configur e the list of network man agement stations th at are autho- rized to a ccess a nd m anage t his hu b, a nd to speci fy whi ch of thos e stations should receive a larms.
3-10 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub netw ork ma nagem ent— al so ca lled S NMP eve nt alarms) . The sta rt of the tab le is shown b elow. Up to ten n etwork m anageme nt stations c an be entered into the table. En tr y 0 (zero) is used for the “al l managers a llow ed” entry.
3-11 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub Example: To add the network mana gem en t stati o n with IP addr ess 190.40.1 01.
3-12 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub To set or ch ange the pa ssword on th e hub. The Password is used to prevent una uthorized ac cess to the hub from netw ork managem ent stations , and thro ug h the console int er face.
3-13 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub To enable (set to ON) or disable (set to OFF) a hub po rt. The initial setting f or all ports is enabled (ON). You can use the St atus comma nd to check the curre nt status of all the ports.
3-14 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub The Late Co llis ion Mon itor ing opt ion moni to rs po rts for exce ssiv e la te collisions. If m onitored po rts experien ce ex cessive late c ollisions, the se ports are d isab l ed.
3-15 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub Securit y and port L EDs flash, the in truder’s MA C address is d isplayed on the co nsole Sta tus comma nd scree n, and an alarm is sent to the au thorized network mana gement station(s) .
3-16 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub Configurin g Security on a Sin gle Port To set or chang e the secu rity configur ation for a single port on t he hub (twisted- pair or AUI) , enter SE and the po rt’s ID; fo r example , SE 4 .
3-17 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub pair ports; that is, the se curity parame ters will all be set to NO ( configured address selection methods, and learned or assigned addresses are not chan ged).
3-18 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub ■ S end Alarm whe n intr uder d etect ed? and Eavesdro p pre venti on? : These para meters are defi ne d earlie r in t he chap ter unde r “Secur ity Configu ra tion Parameter Definitions”.
3-19 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub For Network Management Security. The se curity viola tions ar e indi cated by the Securi ty LED flashing an d the viola ting network managemen t station’s address be ing displaye d on t he Status com mand scre en .
3-20 Mana gin g th e Hub Conso l e Command Re fere nce Managi ng the Hub ■ Redundant Power Supply statu s : • NOT CONNECTED means the RPS is not att ached t o the d evice. • CONNECT ED/FAULT means th e RPS is attached but is reporting an error .
3-21 Manag ing th e Hu b Cons ole C omma nd R efer ence Managi ng the Hub To run a test of the link b etween the hub and another IEEE 802.3 device. Note The desti natio n de vice mu st be ab le to se nd an I EEE 80 2.2 Test Respo nse packet u pon rece ipt of an IE EE 802.
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A Cables and Connectors This a ppen dix list s cabl es th at hav e been teste d and verifie d fo r use with the HP Hub-16M . The fo llowing t opics a re cove red: ■ recomme nded Ca bles ■ twisted .
A-2 Cabl e s an d Co nnec tor s Reco mmen ded Ca bl es Cables and Connec t ors The following table sho ws n etwork co nnections t o the hub. You ca n cont act your HP a uthor ized de aler o r call HP at 1- 800-5 38-8787 to order these parts.
A-3 Cab les and Con nec tors Twiste d-Pai r Cab le/Co nnecto r Pi n-Outs Cables an d Con nect ors Twisted-Pair Cable/Connector Pin-Outs Twisted-Pair Cable for Hub-to- Computer Network Connect ion To connect PCs or othe r network devices t o the hub, use a “straig ht-through” 10Base-T cable .
A-4 Cabl e s an d Co nnec tor s RS-2 3 2 Co nn ec tor and Cabl e Pin- Ou ts Cables and Connec t ors RS-232 Connector and Cable Pin-Outs The Man agement M odule’s R S-232 po rt con nector is wired as depic ted in the foll owi ng ta ble. Use t he RS -232 p ort to conne ct a PC to be u sed as the co nsol e.
A-5 Cab les and Con nec tors RS-232 C onnect or and Cabl e Pin-Ou t s Cables an d Conne ct ors Minimum Cable Pinout for AS CII Console Connection RS-232 Modem Cable PC end 9-pin male Hub en d 9-pi n m.
A-6 Cabl e s an d Co nnec tor s RS-2 3 2 Co nn ec tor and Cabl e Pin- Ou ts Cables and Connec t ors Twisted-Pair Cable Pin Assignments Twisted- Pair Straight -Through Cabl e Hub En d ( M D I -X) Compu.
B Specifications Physical Elec trical The hu b automa tical ly adjust s to any voltag e between 100-12 7 and 2 00-240 volts an d eith er 50 or 60 Hz. The maxim um curre nt ra tings repre sent t he curr ent that could be draw n with an exter nal tr ansceiv er attach ed to t he hub.
B-2 Speci fications Specific ations Connect ors The RJ-4 5 twis t ed-pair po rts ar e compat ible wit h the IE EE 802 .3 Type 10Base-T standard. Electr omagnetic Emi ssi ons: FCC part 15 Class A EN 5 5022 Cl ass A / CISPR-2 2 Class A VCCI Le vel I Compli es wi th Ca nadi an E MC C lass A re quir emen ts.
C Modem Configu rat ion Before installing the modems (one attache d to the hub and one attached to the te rminal /PC), c onfigur e them by eith er issuin g the app ropria t e AT command or by setting t he modem’s switche s , as de scribed in th e tables in the rest of this ap pendix.
C-2 Modem Con figura tion Modem Co nf i gurat i on Practical Peripherals PM288MT II V.34 Intel 14.4EX Supra FAX 288 At th e hu b en d: I ssue the foll owin g AT comman d: A0101: AT&F0&C2 S0=1Q.
D Network Ad dressi ng This appendi x de scribes how ne t work address in fo rmation is obt ai ned and used. Topics c overed ar e: ■ Communic ations Bet ween Hub and Net work Mana gement Statio n .
D-2 Netwo r k Addre ssing IPX Ad dr essing f or Nov el l NetWar e Networ k Add ressing IPX Addressing for Novell NetWare The Novell Ne t Ware netw ork operat ing system use s a proprie tary prot oc ol called I n t ernet wo rk Pack et Ex ch ange (IPX).
D-3 Netw ork A ddr essin g IP Addre sses for I P and No n-IP Netwo rks Networ k Addr essing For more inf ormation, refer to Internetworking with TCP/IP: Principl es, Protocols and Architecture by Douglas E.
D-4 Netwo r k Addre ssing Using BO OTP Networ k Add ressing Time To Live: The number of IP routers a pac ket is allowed to cross bef ore the p acket is d iscarded. The default value is 32. Increase this va lue if the hub is managed f rom a net work manag ement stat ion that is mo re than 32 router s away.
D-5 Netw ork A ddr essin g Using BOOT P Networ k Addr essing BOOTP Table File Entries An en try in th e BOOT P table f ile /etc/bootptab for an HP Hub-16 M w ould be similar to the following: hphub16M: ht=ether : ha=08000 9123456: ip=190.40 .101.22 : sm=255.
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E Backup Link s This chapte r describes ho w to use Bac kup Links on th e hub. Topics de scribed include: ■ how backup li nks work ■ exa mples o f ba ckup li nks ■ config uring a ba ck up link .
E-2 Back up Lin ks How Ba ck up Link s Wo rk Backup Li nks Limitat ions ■ Each h ub can monitor a single ba ckup lin k (only o ne backup link ca n be config ure d on each hub) . But, the h ub ma y be at the re mote end of on e backup lin k and at the monitor ing en d of a backu p link to a different hub.
E-3 Backup Lin ks Examp le s of Backu p Link s Backup Lin ks Examples of Backup Links The Backup Lin k function allow s you to specif y a backup link be twe en two device s in case the prim ary link fails. An exam ple of a backup link is shown below. A back up li nk is a se para te pat h connect ed be tween the hub an d a devi ce.
E-4 Back up Lin ks Exam p le s of Ba ck up Lin k s Backup Li nks When the prim ary link is re paired, you mu st re-enabl e the prim ar y port. It is not re-ena bled automa t ically. When t he primar y po rt is enab led, the ba ck up port is au tomati cally disabl ed an d returned to bac kup mode.
E-5 Backup Lin ks Confi gurin g a B ackup Link Backup Lin ks Configuring a Backup Link Configure the Monit oring Hub Only. All configurat ion of the bac kup lin ks f eat ure is pe rf orme d fr om Ci scoV ie w or the AS CII con sol e.
E-6 Back up Lin ks Identi fyin g the Backu p Li nk Backup Li nks 5. En able the prima ry port in software . This step is necessar y because u ntil you have c omplete d st ep 3 (connec ting the c ables), the te st packets cannot be su ccessfully se nt through the prima ry port.
E-7 Backup Lin ks Reactiv a tin g the Prima ry Link Backup Lin ks Reactivating the Primary Link When t he pr im ar y l i n k is re pair ed, yo u c a n u se a ny o f t he fo l l owin g me th od s to re.
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F Security In f ormation This section describes how t o set se curity for your produ ct. It cov ers the following topi cs: ■ how intrude r preve nt ion works ■ how eave s dro p preven tion works .
F-2 Security Informa tio n How In t ruder Pr even t ion Wo r ks Security In formation How Intruder Prevention Works Intruder Prevention st ops an unau thorized computer (o r other dev ice) from actively gaining a ccess to th e networ k.
F-3 Security Inf ormatio n How Eave s dr o p Pr e v entio n Wo rks Security In formation Assigning the Autho rized MAC address You can assi gn an authorized MAC addr ess by entering i t manually at the hub conso le interface or at the netwo rk managemen t station.
F-4 Security Informa tio n Setti ng In bo und Se curit y wi th In t ruder Pr even t ion Security In formation Setting Inbound Security with Intruder Prevention The pict ure below ill ustr ate s the u se of i nboun d sec uri ty us ing I ntru der Prevention .
F-5 Security Inf ormatio n Sett ing In bound Se curit y with In trude r Prev ent ion Security In formation Auto Port Disabl e Any port may be configure d to be disabled au to matically when an intrud er’s MAC addr ess is de tected.
F-6 Security Informa tio n Setti ng Outbou nd Se cur i ty with Eavesdr op Preve nt ion Security In formation Setting Outbound Security with Eavesdrop Prevention Eavesd rop Pre venti on all ows a po rt.
F-7 Security Inf ormatio n Sett in g Outbo und Secu rity wi th Eav esd rop Prev ention Security In formation MUCHO.BK : CF.FM5 Page 7 Thursday, June 26, 1997 11:37 AM.
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G Safety an d Reg ulatory Stat ements This cha pter covers the follo wing t opics: ■ mounting pre cautions ■ power prec autions ■ safety an d regulato ry state ments ■ Declarat ion of Confor m.
G-2 Safet y an d Regu l atory S t atement s Powe r Prec autio ns Safety and Regula tory Stat emen ts Note If your installat ion requir es a dif ferent powe r cord than the o ne supplied with the hub, be sure to use a power cord displaying th e mark of the safet y agen cy that def ines the reg ulations for power cords in y our count ry.
G-3 Safet y and Re gula tor y Stat eme nts Safety Informa tion Safety an d Regula tory Stat emen ts Safety Information Grounding These ar e safety cl ass I pro ducts and have p rotective earth ing term inals.
G-4 Safet y an d Regu l atory S t atement s Infor m a tions co ncern ant la séc urit é Safety and Regula tory Stat emen ts Informations concernant la sécurité Cet appa reil es t un produ it de clas se I e t possèd e une bor ne de mis e à la terre.
G-5 Safet y and Re gula tor y Stat eme nts Hinwei se z ur Si cher heit Safety an d Regula tory Stat emen ts Hinweise zur Sicher heit Dies ist e in Ge rät der Siche rheit sklass e I und v erfüg t über ei nen schü tzend en Erd ung- stermin al.
G-6 Safet y an d Regu l atory S t atement s Consid eraz ioni s ulla s icure zza Safety and Regula tory Stat emen ts Considerazioni sulla s icurezza Questo pro dotto è omolo gato nella classe di si curezza I ed ha un termi nale prote ttivo di col legam ento a terra.
G-7 Safet y and Re gula tor y Stat eme nts Consid er ac ione s sob r e se gur i dad Safety an d Regula tory Stat emen ts Consideraciones sobre seguridad Este apar ato se e nmarc a dentro de la clas e I d e seguri dad y s e encuent r a p roteg ido p or una bo rna de pu esta a tie rra.
G-8 Safet y an d Regu l atory S t atement s Safety In formati on (Japa nese) Safety and Regula tory Stat emen ts Safety Information (Japanese) MUCHO.BK : CG.
G-9 Safet y and Re gula tor y Stat eme nts Regul ator y St atem en ts Safety an d Regula tory Stat emen ts Regulatory Statements FCC Class A Statement (for U.S.A. Only) This equipmen t has been t ested and f ound t o comply wit h the limits f or a Cla ss A digital device, pursuant to Part 15 of t he FCC Rules.
G-10 Safet y an d Regu l atory S t atement s Decl ar a tio n of Confor m ity Safety and Regula tory Stat emen ts Declaration of Conformity The follo win g Dec lara tio n of C onf ormit y fo r th e HP J3 188A H ub-1 6M co mpl ies with ISO/IEC Guide 22 and E N 45014.
Inde x – 1 Index Numerics 50-ohm terminato r for a ThinL A N cab le segm en t … 1-10 A Activi ty L ED … 1- 4, 1- 12, 2- 5 addr ess sel ectio n meth od … 3-14 ASCII console … 3-1 AUI/Xcvr LED.
2 – In d ex D diagno sing with th e LEDs … 2-2 diag n ost ic test s testing the h ub onl y … 2-5 DIsconne ct comm an d … 3-7 E Eavesdro p prev en tion confi gura tion … 3 -15 eaves drop pr e.
Index – 3 M MAC addr ess use in IP X addre ss … 3-8, D-2 MAna gers comm and … 3-9 MDI switch usin g … 1-8 MDI-X switch usin g … 1-8 MEssa g ein t erv al comm an d … 3-11 modem … 3-3 conf.
4 – In d ex security authorized … F -2 auto … F- 5 detailed d escriptio n … F-1 eaves drop … F -2 intruder … F-2 send alar m … F-5 Secur ity LE D … 1-4, 1- 12, 2-3 security parameters .
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Technical info rmation in th is documen t is sub ject t o ch ange without no tice . © Cop yright 1997 Hewlett- Pa ck ar d Co mp an y Printed in Sing ap ore 6/97 Manual Part Numb er J3188- 90001 *J3188-90001* MUCHO.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il HP (Hewlett-Packard) J3188A è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del HP (Hewlett-Packard) J3188A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso HP (Hewlett-Packard) J3188A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul HP (Hewlett-Packard) J3188A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il HP (Hewlett-Packard) J3188A, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del HP (Hewlett-Packard) J3188A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il HP (Hewlett-Packard) J3188A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo HP (Hewlett-Packard) J3188A insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
