Manuale d’uso / di manutenzione del prodotto 1740A/1750A del fabbricante Tektronix
Vai alla pagina of 143
Us er Man u a l 1740A/1750A Serie s W av eform/ V ector Mo n ito r 070-8470- 06 Thi s doc ume nt s uppor t s f i r m wa r e ve r s i on 2. 2 a nd a bove . ww w .t e kt r oni x.c om Test Equipment Depot - 800.517.8 431 - 99 Washington Street Melrose, MA 02176 - FAX 7 81.
i 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l Gener al Saf ety Summar y Revi ew the foll owing safet y prec aut ions to a void i njury a nd preve nt da ma ge t o thi s product or a ny product s connec te d to it . T o avoi d pote nti al haz ards, use t his product only a s s pecif ied.
Ge ne r al Saf e t y Summ ar y 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l ii The com mon t erm ina l i s at ground pot ent ia l. Do not conne ct the commo n termin al to elevated vo ltages . Do Not Ope r a te W itho ut Co ver s.
Ge ne r al Saf e t y Summ ar y iii 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l CA UTI ON. Caution statements identify c onditi ons or practices tha t cou l d r es ul t i n d am ag e to t hi s p r od uct o r o ther pr o per t y .
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l v TA B L E O F C O N T E N T S Introduction Pr odu ct De sc ri pti on 1- 1 ............................. F eatures 1 -2 ................................. Options 1 - 5 ......
T able of Cont ent s 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l vi Display Mo des 3 - 1 ............................ Ve c t o r 3 -1 ................................. Wa v e f or m 3 -1 ............................. Audio 3-2 .
T able of Cont ent s 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l vii Making Measureme nts Ba sic Measurements 4 - 1 ............................ W aveform Grati cule 4 - 1 ....................... Ho rizo ntal Scale 4 - 1 .
T able of Cont ent s 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l viii Ap p end i ces App endix A P erfo rmance Sp ecificati ons A - 1 ...................... Re liab ility A -1 .............................. Electri cal Specifi catio ns A - 2 .
T able of Cont ent s 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l ix LIS T OF F IGURES Figure 2-1. Mul ti -Use Bezel Controls and But tons. 2-2 ........ Figure 2-2. 1740A Front Panel. 2-3 ...................... Figure 2-3.
T able of Cont ent s 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l x Figure 4-12. T wo-Field SC/ H R - - Y displ ay (P AL). 4-14 .......... Figure 4-13. Audio di splays. 4-15 ......................... Figure B-1. Rear panel REMOTE connect or .
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l xi Pref ace Thi s user manua l is one of a set of two ma nual s tha t docum ent t he T ektroni x 1740A/1750A-Serie s W aveform /V ec tor monit ors.
Pr e f ac e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l xii Ser vice Manual T opics covere d in the servic e ma nual a re as follows: Spe c ific ation s Operati ng In .
Pr e f ac e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l xiii 1750A W a ve f or m / V ecto r Mo n ito r ..
Introduction.
.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 1 Product Descr iption The 1740A/ 1750A - - Serie s are c ombi nat ion waveform /ve ct or moni tors in ha lf-ra ck siz e pa cka ges.
P ro d u ct D escrip tio n 1- 2 1740A/1750A Ser ie s W ave f or m/V ecto r Mo n ito r U ser M a n u a l Fea tu re s H Composit e or Component W ave form Monitori ng H Co mpo s ite V ecto r D is play H Menu-As sisted Opera ti on al lows expande d fea ture set.
P ro d u ct D escrip tio n 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 3 ma ble and 1 i s fact ory-program me d. The FIL T ER menu als o pr ov ides a ch oice of f ou r filter s in ad ditio n to flat. T wo comb inatio n filter ing mo des can be dis play ed in OVE RLA Y or PA R A D E .
P ro d u ct D escrip tio n 1- 4 1740A/1750A Ser ie s W ave f or m/V ecto r Mo n ito r U ser M a n u a l.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 5 Options Whi te phosphor CR T a nd power cord opt ions are the only opti ons current ly a vai la ble for the 1740A/ 1750A- - Seri es. Fiel d upgrade kit s liste d in t his sect ion c an a lso be used wit h thes e monito rs .
Opt i ons 1- 6 1740A/1750A Ser ie s W ave f or m/V ecto r Mo n ito r U ser M a n u a l CRT Optio ns The s tand ard in s tru ment is s hipp ed w ith a P3 1 (g reen ) phosphor CR T i nstal le d. If Option 74 i s ordered, the instru- me nt i s s hippe d with a P4 (w hit e) phosphor CR T insta ll ed.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 7 Accessori es St andar d Ac ce sso r ie s Thes e access ories are inclu ded w ith the pr oduct : 1 Manual , user: 1740A.
A ccesso ries 1- 8 1740A/1750A Ser ie s W ave for m/ V ecto r Mo n ito r U ser M a n u a l Fie ld Upg r ade Ki t s 1700F00 Pl ain Cabinet — This p lain metal h alf- rack s ize cabinet is p ainted s ilver -gr ay . V en tilating h oles in top, bo ttom, an d s ides o f th e cabin et allow heat gen erated w ithin the in s tru ment to d is s ipate.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 9 Installation Un packin g Save the s hippi ng c art on a nd pa cki ng m at eri al s (inc ludi ng anti- s tatic bag) in cas e it beco mes n eces s ary to s hip the instrum ent t o a T e ktroni x S ervi ce Ce nte r for servic e or repai r .
In sta lla tio n 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 10 cushioni ng on al l side s of the i nstrume nt. 3. Seal t he ca rton with shipping ta pe, i ndustria l stapl er , or both.
In sta lla tio n 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 11 WARNING Mai ns F req uenc y and V oltag e Range The 1740A/ 1750A- - Seri es moni tors opera te at 50 and 60 Hz, over t he ra nge of 90 - - 250 V olt s, without opera tor a djustm ent .
In sta lla tio n 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 12 Mecha nica l Ins tallation A ll qualif ication tes ting w as p erf or med w ith a T ek tro nix 1700F00 cabi net insta ll ed.
In sta lla tio n 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 13 Rackm o un tin g The 1740A/ 1750A- - Seri es m onit ors are hal f-rac k widt h a nd thre e ra ck uni ts high.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 1- 15 Instrument C onfigur ation F ocu s , s cale illumin ation , s ign al inten s ity , rea dout inte nsity , and t rac e rot at ion a re set through t he CR T me nu. Severa l instrum ent ope rat ing para me te rs ca n be s et t hrough the CONF IG me nu.
Getting Sta rted Test Equipment Depot - 800.517.8 431 - 99 Washington Street Melrose, MA 02176 - FAX 7 81. 665.0780 - TestEquipm entDepot.com.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 1 AT A G L A N C E Fron t - P a n el C on trols The foll owing is an ove rvie w of front-pane l c ontrol s. Figure 2-2 shows the 1740A front pane l and Figure 2-3 show s the 1750A front panel .
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 2 H Turn of f i nstrume nt power . H Depress and hold t he CL EA R MENU and WA VE FORM butt ons w hil e you t urn instrum ent power on aga in. Hold both buttons i n unt il the instrum ent ret urns to its norm al op eratin g s tate.
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 3 INPUT MUL TIPLE DISPLA Y P A RADE OVERLA Y CH-B3 CH-A3 CH-A2 CH-B2 CH-B1 CH-A1 CH-B CH-A 1740A VECT OR W.
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 4 INPUT MUL TIPLE DISPLA Y P A RADE OVERLA Y CH-B3 CH-A3 CH-A2 CH-B2 CH-B1 CH-A1 CH-B CH-A VECT OR W A VEF.
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 5 POSIT ION H VERT PO S allo w s th e sig nal dis play to be mov ed ver tically . Of fs ets for chann els A2/A 3 and B2/B 3 are ena ble d through t he CONFIGURE m enu.
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 6 REF H EXT toggl es be twee n e xte rnal refe renc e ( EXT LED on ) and in tern al refer ence.
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 7 OVE RLA Y OVERLA Y provide s an overl ai d displa y of al l se- le ct ed i nputs. MENU P us h the des ired men u bu tton to en ter that menu an d enab le the as s ociated f un ction s .
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 8 R ear - P anel Co nnect o r s The foll owing is an ove rvie w of rear-panel conne ct ors.
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 9 Fu se H The i nstrume nt ’ s m ai ns fuse should be re pla ce d onl y with a 250V , 2A , F-type ca rtri dge fuse. A repl ac e- ment fu s e is inclu ded w ith the ins tru ment.
At A Gl anc e 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 10 A A1 A2 A3 DIE I N DIESE M GERA T E NTST EHE NDE ROHTGENST RAHLUNG IST BESCHLEUNI GUNGSP ANNUNG KLE INE R AL S 20 KV .
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 11 Oper ator’s C heck out Pr ocedure Before proce edi ng, re ad At A Glance s t a r t i n go np a g e2 - 1 .
Ope r at or’ s Che ckout Pr oce dure 2- 12 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l H Connec t the ge nera tor NTSC output (COMP OS ITE for TSG131) to the CH -A input . Connec t the CH -A loop- through t o the EXT RE F input a nd conne ct a 75 Ω te rmi nat or t o t he EXT RE F loop-t hrough.
Ope r at or ’ s C h eck o u t P ro ced u re 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 13 Enter th e CRT m enu. DISPLA Y w ill be o utlin ed. A djus t the bezel co ntr ols for o ptimu m fo cus , graticu le s cale illumin a- ti on, a nd signal int ensit y .
Ope r at or ’ s C h eck o u t P ro ced u re 2- 14 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 10 S/ DIV Figure 2 - 6. Cal ibrat or dis play . 5 . Ga in C ontr ol Ther e are th ree calib rated v ertical g ain s ettings available ( X1 , X5 ,a n d X10 ), a s wel l as an i nde pende nt varia ble gai n c ontrol .
Ope r at or ’ s C h eck o u t P ro ced u re 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 15 Pre ss t h e MAG button. T he MAG indic at or l ight s and a 1 S/Div sw ee p is displa yed. Use the HORIZ POS c ontrol t o vie w the m agni fie d displa y , the n turn off the MAG .
Ope r at or ’ s C h eck o u t P ro ced u re 2- 16 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l cont rol to move t he cursor away from grati cul e ce nte r , and the c ent er bez el c ontrol t o move the c ursor around the gra ti - cul e ce nte r point.
Ope r at or ’ s C h eck o u t P ro ced u re 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 17 10 S/ DIV FLA T LUM CHROM DIFF R- - Y SCH R - - Y F+L F+L+C Figure 2 - 7. T wo-Line L UM filt er displ ay of col or bar s ignal.
Ope r at or ’ s C h eck o u t P ro ced u re 2- 18 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l Se l e c t F+L + C ( FL A T plus LU M plus CHROM ). The dis play is s imilar to the F+L dis play , w ith the chr omin ance- filter ed signal adde d on the right .
Ope r at or ’ s C h eck o u t P ro ced u re 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 19 VECTO R PHA SE FLA T LUM CHROM DIFF R- - Y SCH R - - Y F+L F+L+C Figure 2 - 10. T wo-Line R - - - Y displ ay of col or bar s ignal.
Ope r at or ’ s C h eck o u t P ro ced u re 2- 20 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l VECTO R PHA SE FLA T LUM CHROM DIFF R- - Y F+L F+L+C SCH R - - Y Figure 2 - 12. T wo-Field SC/H R - - - Y dis play ( P AL), sho wing pro per SC H phase.
Ope r at or ’ s C h eck o u t P ro ced u re 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 21 LINE SEL ALL 131 FIE LD ALL 1OF 2 1OF8 1OF4 1H 15H -- -- 1 4 5 Figure 2 - 13. Line Select displ ay with 1 5H s elec ted, in 2 FI ELD sweep.
Ope r at or ’ s C h eck o u t P ro ced u re 2- 22 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l VECTO R PHA SE Figure 2 - 14. Vectorscope color b ar d isp lay . Figure 2 - 15. Pict ure mode display of co lo r bar signal .
Ope r at or ’ s C h eck o u t P ro ced u re 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 2- 23 1 2 . A udio D is pla y T o obtai n an a udio di splay , conne ct the le ft a nd right audi o signal s to the rear-panel REMOTE connec tor as foll ows : +Y to pin 8, - - Y to pin 9, +X to pi n 10, a nd - - X to pin 1 1.
Ope r at or ’ s C h eck o u t P ro ced u re 2- 24 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l VECTO R PHA SE Figure 2 - 17. N TSC SC/H displ ay with internal r eferenc e selec ted. VECTO R PHA SE Figure 2 - 18. P A L SC/H dis play .
Oper at ion B asics.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 1 F unctional Overview The “ F unct iona l Overvie w ” s ection des crib es the fro nt- and rea r -pane l func ti ons in grea te r det ai l t han t he “ At A Gla nce ” sect ion.
F u n ctio n a l O verview 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 2 ca n be a ct iva te d and posit ione d for refe renc e or m ea sure- me nt. LINE SE LEC T i sd i s c u s s e do np a g e 3 - 1 4a n d CURSORS are dis cus s ed on p age 3- 8.
F u n ctio n a l O verview 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 3 Ti me C ode Lon gitu din al time cod e is mo nito red in a f rame- rate d is play to a ll ow obs erva ti on of am pli tude , synchroni za ti on, a nd phase wit h respec t t o refe renc e ve rti ca l sync.
F u n ctio n a l O verview 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 4 Inputs A1 , A2, A3 , and B1, B2, B3 a r e d e s i g n e dt ob e u s e da s thre e-wire input s for c ompone nt s igna ls.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 5 Using the Menus G ener al menu inf or mation h ere is f ollo w ed by d etailed inform at ion a bout each menu: FIL TER, CURSOR, L IN SEL , PRESET , CONF IG, G AIN and CRT .
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 6 CRT , PRESET , an d CONFIG menus wil l be e xit ed compl et el y when anot her m enu but ton i s pus hed.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 7 menu f un ction is still in ef fect (LED is lighted ), pu s h the me nu butt on to bri ng bac k the full displa y , the n push it a gai n to exit the menu .
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 8 H F+L+C — d is play s the video s ign al flat, lumi- nan ce filter ed, an d ch ro minan ce filter ed. The s ignal is displa yed i n para de or ove rla y mode , a s s el ec te d through t he on-scre en m enu.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 9 VERTPO S HORIZ POS CL EAR MENU AMPL ITUDE PHASE VECTOR PHAS E Left Cent er R i ght VEC CURS O R POLAR MARK AMPL 75.0IRE PHASE 145.0 ° Figure 3 - 2. Th e VEC TOR C URSOR me nu.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 10 H When timin g cur s or s ar e selected ( TIME ) , the left bezel co ntr ol is us ed to ad jus t .
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 11 VERTPO S HORIZ POS CL EAR MENU VOL T1 VOL T2 TRAC K ∆ V 700 mV VOL T TIME MARK V+T W FM CURS O R VEC CURS O R POLAR MARK CO NT RO L VOL T TIME Vo lt a g e C u r so r 1 Vo lt a g e C u r so r 2 Tim ing Cursor 1 Tim ing Cursor 2 Figure 3 - 4.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 12 The re a re t wo vect or cursor displa ys: POLAR and MA RK . (The VECTOR PHA SE be ze l cont rol cont inue s to adj ust the phase of the signal . ) Pola r Cu rso rs can b e us ed to meas ure th e amplitu de an d phase of the chrom ina nce signa l.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 13 If it beco mes n eces s ary to co mpen s ate for min or s hiftin g of ma rkers due to drift or ex.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 14 Line Sel ec t Menu Push i ng t he LIN SE L menu bu tton en ables the line select mod e and provide s the l ine sel ec t me nu display . T he mi ddle be ze l cont rol is ass igne d to s el ec t the l ine num ber .
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 15 When bezel butto ns co rr es ponding t o N EX T FIEL D , A L T2F I E L D ,o r A L T4F I E L D are pushed, a box fla shes mom ent ari ly a round the on-scree n la bel to ve rify that the s election h as b een made.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 16 Preset M enu The 1740A/ 1750A- - Seri es ha s 10 pre sets c apa ble of stori ng front-pa nel set ups. Nine of the pre sets are user -program - ma ble a nd one is fac tory pre-progra mm ed.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 17 Recal l U s e the lef t bezel co ntr ol to s elect (ou tline) a p res et for r e- call. Pu s h RECA LL to recall the sto red in s tru ment con fig ur a- ti on.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 18 Co nfig ure Me nu Push t h e CONFIG butt on to di splay t he c onfigure me nu, show n in Figure 3-6.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 19 VERTPO S HORIZ POS CL EAR MENU Bezel Bu tton s Left Cent er R i ght INPUT VECT OR FORM A T ST AND.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 20 Ta b l e 3 - 1 . V alid F O RMA T s elect ions .
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 21 OFFS ET H The V ERTICA L POSITION c ontrol norma ll y positi ons al l channe ls t oget her .
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 22 Additi onal choi ce s appe ar w hen CA L SIG or GA IN C A L is turne d on: CAL S IG ON H In waveform mode , t he user c an set the ca li brat or freque ncy t o 100 KH Z or to FS C O S C ( FSC OSC = 3.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 23 REMO TE H The curre ntl y opera ti ng software ve rsion is dis- pla yed i n the lower ri ght c orner of t he scre en. H Thr ee menu ch oices are availab le.
Us i ng t he Me nus 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 24 Gain M enu H A ny o ne of th ree calibr ated gain r atios can be selected : X1 , X5 , or X10 . V aria ble gai n is al so avai la ble , i ndepe n- dent of the othe r gai n sett ings.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 3- 25 Remote Oper ation The 25-pin re ar-panel REMOTE connec tor i s a s ubmi nia ture D -type c onnec tor . It a ccepts th e i nput for RGB/YRGB st a i r- cas e, exter nal h or izon tal, remo te s yn c exter nal b lank ing , time code , and Le ft and Right a udio.
Making Mea surements.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 1 B asic Mea sur ements B asi c M e asu r e me nt s c onta ins 1740A/1750A - - Serie s grat ic ule descri pti ons, foll owed by speci fic me asurem ent proce dures. Thi s moni tor us es a n i nte rnal grat ic ule , w hic h c ombi nes wa- veform a nd vect or marki ngs.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 2 NT SC V e r ti c a l Sc a l e s The NTSC grati cul e is s hown in Figure 4-1. The l eft side of the gr aticule is s caled in IRE un its an d exten ds fro m - - 50 to +12 0 IR E in 10 IR E incremen ts .
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 3 P A L V er tica l Sca le The P A L grat ic ule i s show n in F igure 4-2. On the le ft side of the P A L grat ic ule i s a volt age sca le t hat e xte nds from 0 to 1.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 4 Dual - Standard V ertic al Scal e The dua l-sta ndard grat ic ule c ombi nes the NTSC and P AL scal es. The NTSC s ca le i s on the le ft side; t he P AL scal e is on the right .
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 5 Maki ng W ave fo rm Measur eme nt s Horizontal Sync Amp litude The ver tical scale at sy nc tip (4 0 IR E NTS C or - - 0.3 V P A L) provide s ± 2a n d ± 4I R E( ± 2a n d ± 4 mV) for me asuring sync am pli tude .
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 6 T o me asure the K -- Facto r line-time d is tortion , meas ur e the lar ges t deviatio n of th e bar top ( tilt or r ounding) withi n the struct ure.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 7 V ecto r Graticule The V ECTOR d is play per mits meas ur ements o f hue in terms of the rel at ive pha se of the c hromi nanc e signal wit h respect to th e colo r b ur s t.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 8 R ° ° ° ° ° ° ° ° Figure 4 - 4. V ecto r tar gets - - - N TSC values ( P AL values in parent heses ).
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 9 M a k i n gV e c t o rM e a s u r e m e n t s Chroma Bandw idth The h or izon tal and v ertical ax es o f th e vecto r g raticu le cont ai n ma rkings for che cki ng chrom a ba ndwidth.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 10 Maki ng SC / H Phase Me asur em ent s (1750A - - - Series Onl y) The SC /H displa y provide s a vec tor di splay of t he subca rrie r - to-hori zont al -sync phase rela ti onship.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 11 VECTO R PHA SE Bur st V e c to r Sync D ot 0 ° Axis Sync D ot Rela tiv e angle i ndi cates d e g r e eo fS C / Hp h a s e . Figure 4 - 6. NTSC dual -do t SC/H displ ay .
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 12 PA L The 1751A uses a s eri es of dots around the compa ss ros e with a single dot i n a blanke d area t o denote sync (see Figure 4-8).
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 13 VECTO R PHA SE FLA T LUM CHROM DIFF R- - Y SCH R - - Y F+L F+L+C Bur st Hor iz ontal Sync Figure 4 - 9. T wo-Line SC /H R - - - Y dis play ( NTSC), wit h pro per SC /H phase.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 14 VECTO R PHA SE Figure 4 - 11. T wo-Field SC/H R - - - Y dis play ( NTSC), s howing appr oximate 10 ° ph ase e rror . VECTO R PHA SE FLA T LUM CHROM DIFF R- - Y F+L F+L+C SCH R - - Y Figure 4 - 12.
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 15 Maki ng Audi o Measur eme nt s An audio signa l wit h no phase e rror appe ars as a stra ight li ne ext endi ng from t he a udio box i n the upper ri ght c orner of t he grat ic ule to t he box i n the lower l eft .
B a sic Mea su rem en ts 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 16 T im e Co de Display Li nea r Time Code, al so know n as Longi tudi nal Time Code (L TC), is an 8 0- bit s ign al with in fo rmatio n w hich mak es it poss ibl e t o ac cura te ly i dent ify a n indi vidua l fra me of re- corde d vide o.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l 4- 17 Calibr ation Instrume nt gai n may requi re rea djustm ent for speci al m oni- tori ng appl ic at ions. T o prevent errone ous mea sureme nts, gai n should be a djuste d only by qua li fie d personnel .
C a lib ra tio n 4- 18 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l Se t Hor i zon t al Gai n 1. T o s et horiz onta l ga in, push the CONFIG menu butt on. Sele ct CALIBRA TE , the n CAL SIG ON and 100 KHZ . Se l e c t GAI N CA L ON .
Appendices Test Equipment Depot - 800.517.8 431 - 99 Washington Street Melrose, MA 02176 - FAX 7 81. 665.0780 - TestEquipm entDepot.com.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l A- 1 A ppen d i x A P erfor mance S pecif ication The s pecificatio n tab les u s e the f ollo w ing ab br eviatio ns : P erformance Requirement (Req) .
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 2 1740A/1750A Ser ie s W ave f or m/ V ector M o n ito r U ser Ma n u a l Electr ical S pecificat io ns T able A - 1: Wavefor m V ert ical Deflection CA T EGOR Y DESCR IPTION D eflectio n F acto r Req: 1 V full scale (X 1 ): 1 v o lt i nput di s pl a ye d wi t h- i n 1% of 140 I RE ( 1.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 3 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T able A - 1: Wavefor m V er tical Deflection (Cont.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 4 1740A/1750A Ser ie s W ave f or m/ V ector M o n ito r U ser Ma n u a l T able A - 1: Wavefor m V er tical Deflection (Cont.) CA T EGOR Y DESCR IPTION T r a ns i e nt Re s pons e Req: P u lse-to -B ar R atio 0 .
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 5 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T able A - 1: Wavefor m V er tical Deflection (Cont.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 6 1740A/1750A Ser ie s W ave f or m/ V ector M o n ito r U ser Ma n u a l T able A - 3: Wavefor m Horizontal Deflection CA T EGOR Y DESCR IPTION .
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 7 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T able A - 4: Measurem ent Cursor s CA T EGOR Y DESCR IPTION W avefo rm A ccu racy Req: V o ltag e: 0 .5 % T i mi ng: 0.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 8 1740A/1750A Ser ie s W ave f or m/ V ector M o n ito r U ser Ma n u a l T able A - 6: Calibrator CA T EGOR Y DESCR IPTION W a ve f or m Squar e W ave Req: Ampl it ude: 1.0 V ± 0. 5% Req: Fr e que nc y: 100 kHz ± 0.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 9 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T able A - 7: V ect or Mode (Cont .
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 10 1740A/ 1750A Ser ie s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T able A - 8: Audio Mode CA T EGOR Y DESCR IPTION I nput RI: D C cou p led , d ifferential i nput I nput I mpe danc e RI: 20 k Ω F u ll S cale S electio n RI: 0 , 4 , 8 , & 1 2 d B m fu ll scale.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 11 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T able A - 10: SCH Phase Mode (1750 - - Series O nly) CA T EGOR Y DESCR IPTION A b so lu te A ccu racy Req: ≤ 5 ° RI: A p p lies o v er a temp eratu re ran g e o f 0- -5 0 ° C RI: C alib rated at 25 ° C.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 12 1740A/ 1750A Ser i e s W av ef orm / V ector M o n ito r U ser Ma n u a l T able A - 12: Power Source CA T EGOR Y DESCR IPTION Main s V o ltag e R an g e Req: 90 - - 250 V RI: Cont i nuous ra nge f rom 90 to 250 V ac Ma ins Fr eque ncy RI: 50 or 60 Hz .
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 13 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T able A - 14: Physical Char acter istics CA T EGOR Y DESCR IPTION Di me nsi ons Req: Hei ght: 5 1/ 4 i nc he s (133.
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 14 1740A/ 1750A Ser i e s W av ef orm / V ector M o n ito r U ser Ma n u a l T abl e A - 15: Cert ifications and com pli ances (cont .
A p p en d ix A: P erfo rm a n ce S p ecifica tio n A- 15 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l T abl e A - 15: Cert ifications and com pli ances (cont .) CA T EG ORY STANDARDS OR DE SCRI PT I ON Safety Standards U.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l B- 1 A ppen d i x B Remote Connector s R em o t e Co nnect or The rea r -pane l RE MO TE conne ct or (show n in Figure B-1) is a 25 -p in s ub min iatur e D -ty pe w ith female co ntacts .
A p p en d ix B: R em o te C o n n ecto rs 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l B- 2 Ta b l e B - 1 . R emote Pin Func tio ns and Signal R equirements ( Co nt.) Pin No. Mi scell aneous Information Signal Requi rement Function 4 External Blank- ing I nput Negati ve-going signal Enabled by m enu select ion.
A p p en d ix B: R em o te C o n n ecto rs 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l B- 3 Ta b l e B - 1 . R emote Pin Func tio ns and Signal R equirements ( Co nt.) Pin No. Mi scell aneous Information Signal Requi rement Function 19 Preset 3 Ground ( TTL low) Gr ounding pi n 19 recalls set up from preset 3.
A p p en d ix B: R em o te C o n n ecto rs 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l B- 4 R em o t e Co nnec t o r Co nver t er Whe n t he 1740A / 1750A - - Serie s .
A p p en d ix B: R em o te C o n n ecto rs 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l B- 5 R S232 Con ne c t or The seri al i nte rfac e has a driver buil t in for RS 232 s eri al bina ry data i nte rcha nge. T he opera ti onal m ode is full du- ple x.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l C- 1 A ppen d i x C User Service Thi s sect ion conta ins i nstruct ions for us er and pre vent ive ma int ena nce . If t he instrume nt does not functi on prope rly , i t should be re ferre d to qua li fie d servic e pe rsonnel or re turne d to T ekt ronix for servi ce .
A p p en d ix C: U ser S ervice 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l C- 2 Graticule L ight R epla cement Repl acement Bulbs Rep lacement bulb s are su pp lied with this in s tru - me nt as S ta ndard Acce ss orie s.
A p p en d ix C: U ser S ervice 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l C- 3 3. T o remo ve a b ulb , po s ition th e tw eezer tip s o n th e thin , fla t porti on of the bul b (close to the pl asti c socket ). Care full y pull the bulb stra ight out.
A p p en d ix C: U ser S ervice 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l C- 4 Cl eani ng The instrum ent should be c le ane d ofte n enough t o preve nt dust and dirt from ac cum ula ti ng.
A p p en d ix C: U ser S ervice 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l C- 5 CA UTION A 2% RMA fl ux conte nt s olde r is r ec omm ende d f or making r epai rs in thi s instrum ent . Cle aning of r os in r esidue is not r e commended.
A p p en d ix C: U ser S ervice 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l C- 6 6. Repl ac e t he be ze l a nd bez el screws. Tight en scre ws (8 in lbs ). 7. Repl ac e t he pa nel bel ow the CR T , and pre ss on both the rig ht an d lef t s ides of th e pan el un til it s nap s in to p lace.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l D- 1 A ppen d i x D S oft w are V ers io n T able D- - 1 deta il s software rele ases from SN B010100 t o pr es ent. If a new releas e o ccur s after this man ual is prin ted, a revis ed T ab le D- - 1 will be s hip ped w ith the manual.
Appe ndi x D: Sof t war e V e rs ion 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l D- 2 T able D- 1. Soft wa r e R e le a s es (C ontinue d) V er- sio n Comm e nt s Mod No.
Glossary.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l G- 1 Glossar y AC Coupled A conne ct ion w hic h re move s the consta nt volt age (DC compone nt) on whic h the signal (AC compo- nent ) is ridi ng. Us ual ly i mpl em ent ed by pa ss ing t he signa l through a ca pac it or .
G lo ssa ry G- 2 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l Br eezew ay The porti on of the vide o signal which l ie s betw een the tr ailing ed ge o f th e hor izon tal s yn c pu ls e and the start of burst. Bree ze way is part of bac k porch.
G lo ssa ry 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l G- 3 Color Diff ere nce S ignals Signal s used by color te le vision system s to conve y col or inform at ion i n such a way that the s ign als g o to zero w hen ther e is no co lor in th e pic ture .
G lo ssa ry G- 4 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l Distortion If a sine wave of a s ingl e freque ncy is put into a s ys tem, and h armo nic co nten t at multip les o f th at fr equ en- cy appe ars at the out put, t here i s harm onic di storti on present in the s ys tem.
G lo ssa ry 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l G- 5 Gen Loc k The proce ss of locki ng both sync a nd burst of one signa l t o sync and burst of a nothe r , m aki ng the two signal s com ple te ly s ynchronous.
G lo ssa ry G- 6 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l Lu mi nan ce The signal which represent s bright ness, or the am ount of light i n the pic ture . Thi s is the only signal re - quire d for bla ck a nd white pic ture s, and for c olor system s it is obtai ned as a w ei ghte d s um (Y = 0.
G lo ssa ry 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l G- 7 Quadra ture Distort ion Dis tortio n res ulting f ro m the as ymmetr y of s ideban ds us ed in ves tigial sid eban d televis ion tra nsmission.
G lo ssa ry G- 8 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l Sub carr ier The m odula ti on sideba nds of the c olor subca r- rie r cont ai n the R - - Y (V ) and B - - Y (U) informa ti on. For NTSC, subcarri er fre quenc y is 3.
G lo ssa ry 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l G- 9 V ert ical I nt erval The synchroniz ing i nforma ti on which app ears b etw een fields an d sig nals th e pictur e monito r to go bac k to t he t op of the scree n to be gin a nothe r vert ic al scan.
Index.
1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l I- 1 Index A A123/ B123, 2- 6, 3-4 Acce ssor i e s, 1 -7 field upgr ade k its , 1-8 inc oming ins pec tion lis t , 1- 9 opt.
In d ex 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l I- 2 Dimens ions , A -13 Dis play modes , 2-5, 3- 1 Dual- s tandar d grat ic ule, 4- 8 E Elec t ric al ins t allati.
In d ex 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l I- 3 M Magnifier , 2-5, 3- 4 Mains f requenc y, 1-1 1 Manual, part number s , 1-7 Mark er s , 3-9 Meas urement C ur.
In d ex 1740A/ 1750A Se r i e s W av e f or m/ V ecto r Mo n ito r U ser M a n u a l I- 4 RS 232 connec t or , 2- 9, B- 5 S Sc ale illuminat ion, 3- 24 SC H dis play , 2-5, 3- 2 SC H phas e measur eme.
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 Tektronix 1740A/1750A 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 Tektronix 1740A/1750A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Tektronix 1740A/1750A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Tektronix 1740A/1750A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Tektronix 1740A/1750A, 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 Tektronix 1740A/1750A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Tektronix 1740A/1750A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Tektronix 1740A/1750A 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.
