Instruction/ maintenance manual of the product J3188A 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.
MUCHO.BK : cvrf-r1.ft5 Page 2 Thursday, June 26, 1997 11:37 AM.
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.
An important point after buying a device HP (Hewlett-Packard) J3188A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought HP (Hewlett-Packard) J3188A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data HP (Hewlett-Packard) J3188A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, HP (Hewlett-Packard) J3188A you will learn all the available features of the product, as well as information on its operation. The information that you get HP (Hewlett-Packard) J3188A will certainly help you make a decision on the purchase.
If you already are a holder of HP (Hewlett-Packard) J3188A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime HP (Hewlett-Packard) J3188A.
However, one of the most important roles played by the user manual is to help in solving problems with HP (Hewlett-Packard) J3188A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device HP (Hewlett-Packard) J3188A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
