B mn K thut My tnh, Vin CNTT&TT, HBKHN

Hng dn s dng My hin sng, ngun chun, my pht xung chun

www.dce.hust.edu.vn, www.dce.hut.edu.vn 8/31/2012

S dng my hin sng

Thit b: Aditeg OS-620

Gii thch cc nt iu khin

Cng tc chnh

ca my, khi

bt cng tc

ln th n led

s sng

iu

chnh

sng ca

th

iu chnh

sc nt

ca th

iu chnh tia song song vi

ng k ngang trn mn hnh.

V mt t do no , trc honh

ca th b nghing th hy

dng nt vn ny chnh li.

iu chnh thay i trc

ngang th nh tnhtin

sang tri/phi, co gin,

chia trc thi gian

p dng cho c 2 knh vo

iu khin knh vo 1 theo

trc dc nh s volt/vch

chia, in AC/DC

iu khin knh vo 2 theo

trc dc nh s volt/vch

chia, in AC/DC

iu khin cch thu bt tn

hiu vo t cc knh. p

dng cho c 2 knh vo

iu chnh thay i trc

dc th, chung cho c 2

knh vo

Cm u o knh 1 Cm u o knh 2

Chhinthknh 1

lnmnhnh

Ch hin th knh 2 ln

mn hnh

Ch hin th knh 1 ln

mn hnh

Hin th c 2

knh

Trong ch Dual th

CH1 v CH2 c hin

th mt cch lun phin,

Trong ch Dual th

CH1 v CH2 c hin

th ngthi

Thc hin php cng

v hin th tn hiu

(CH1 + CH2)

Nu bm thm nt

CH2 INV th s c tn

hiu (CH1 CH2)

Phng i trc ngang 1

ln, 10 ln, v ch

XY o mo

Tnh tin th sang

tri, sang phi

Mc CAL: Cung cp tn hiu 2Vp-p, 1KHz, xung vung dng chnh que o.

Khi mun kim tra li que o, hoc cm thy kh hiu v th, hy mc que o vo y (khng cn kp

ni t), th tn hiu hin th phi c dng xung vung. Sau , hy iu chnh li cc nt position,

swap.var, time/dive, volts/div th hin th ngay ngn.Cui cng, g que o ra v lm tip cng vic.

Chn la nhy ca trc ngang t

c bao nhiu ms/ mivch chia.

Nm iu khin thang chy ca thi gian qut

c s dng khi CAL v thi gian qut c hiu

chnh gi tr t trc ti TIME/DIV. Thi gian qut

ca TIME/DIV c th b thay i mt cch lin tc

khi trc khng ng v tr CAL. Xoay nm iu

khin n v tr CAL v thi gian qut c t

trc gi tr ti TIME/DIV. Vn nm iu khin

ngc chiu kim ng h n v tr cui cng

gim thi gian qut i 2.5 ln hoc nhiu hn.

Tnh tin th ln xung.

i khi, mn hnh hin th

trng trn v vn position qu

mc, ra ngoi mn hnh.

Chn la nhy ca trc dc t

cbaonhiu volt/ mivch chia.

Cnnhccchtvch chia,

vnuotnhiu 0->5V

thphitvold/div tithiul 0.5V

thkhngbtrnrangoimnhnh

Chn la nhy ca trc dc t

cbaonhiu volt/ mivch chia.

Cn nhc cch t vch chia, v nu

o tn hiu 0->5V th phi t

votd/div ti thiu l 0.5V th

khng b trn ra ngoi mn hnh

Tnhiu CH1 l AC hay DC.

Nu tn hiu vo l xung vung

DC 0-5V, m bm AC, th th

s thnh xung vung -2.5V~2.5V

Tinhchnhnhytrcdc

B qua tn hiu vo, v coi tn

hiu vo l GND lun.

Dng xc nh xem gc 0 ca

trc dc l u.

i khi dng sng b tri, ta

chnh nt ny dng sng

ng li

INT: tn hiu Trigger t

ngunbntrong.

LINE: Hin th tn hiu Trigger

t ngun xoay chiu

Chn ngun tn hiu

Trigger bn ngoi ti

u vo EXT TRIG IN

+ Trigger xy ra khi tn hiu Trigger

vt qu mc Trigger theo hng

dng

- Trigger xy ra khi tn hiu Trigger

vt qu mc Trigger theo hng m.

o Norm: Khi khng c tn hiu Trigger th mch qut ch ch v khng c tn hiu

no c hin th.

o Auto: Nu khng c tn hiu Trigger hoc tn hiu Trigger nh hn 25 Hz th mch qut

pht ra tn hiu qut t do m khng cn n tn hiu Trigger.

o TV-V: Dng quan st tn hiu dc ca hnh nh trong TV

3. Triggering:

SOURCE: Dng chn tn hiu ngun trigger (trong hay ngoi), v tn hiu u vo EXT TRIG IN

- CH1: Chn Dual hay Add Vert Mode, chn CH1 ly tn hiu ngun Trigger bn trong.

- CH2: Chn Dual hay Add Vert Mode, chn CH2 ly tn hiu ngun Trigger bn trong.

- TRIG.ALT: Chn Dual hay Add Vert Mode, chn CH1 hoc CH2 SOURCE, sau nhn TRIG.ALT, ngun Trigger bn trong s hin th lun

phin gia knh 1 v knh 2.

Chun ha my trc khi s dng

Sau mt thi gian khng s dng, c th ta khng nh c cu hnh ang thit lp cho my oscilloscope. V

vy, cn chun ha li my trc khi dng.

1. Tt my v kim tra xem cc nt iu khin c ng v tr nh sau

Thnh phn Thit lp Thnh phn Thit lp

Ch2 inv Nh ra Slope +

Alt/Chop/Add Chop Trig.alt Nh ra

X1/X10 X1 Trigger mode Auto

2. Vo khu vc iu khin trc dc VERTICAL ca cc knh CH1, CH2, bm vo nt

GND. Trn mn hnh s hin th mt ng thng tng ng vi gc 0V. i

khi, vch ngang c th khng xut hin trn mn hnh do b iu chnh ra

ngoi vng hin th. Hy vn nt Position dng sng l ng nm ngang

gia mn hnh.

Chnh xong th bm vo nt GND ln na khi phc tn hiu vo thng.

3. Mc u o l mc CAL c c tn hiu vo chun l dng sng l sng

vung 2 p-p (2 volt nh - nh).

4. Trong khu vc iu khin trc

ngang HORIZONTAL, chnh nt

Position sao cho sng hin th ng gia mn hnh.

Tip tc vn nt Time/DIV vch chia thi gian c rng hp

l, nhn thy r cc tn hiu.

5. Trong khu vc iu khin trc dc VERTICAL, chnh nt Volt/DIV

vch chia volt c rng hp l, nhn thy r cc tn hiu.

Lc ny, vch chia khc trn nt vn c th khng ph hp vi

vch chia trn mn hnh, v d ta chn Volt/DIV l 2V, nhng

bin ca tn hiu chun (xung vung 2Vp-p) khng khp vi 1

vch chia trn mn hnh. Khi , hy tinh chnh rng vch chia

volts bng cch vn nt gia cho ti khi trng khp th thi.

Chnh xong th tho que o khi mc CAL

Mt s lu khi s dng

Mi thanh o gm c u o v mass. Ch vic gn 2 u ny vo hai im cn o. Lu ch ang o

l AC hay DC m chnh cn gt cho ph hp.

C th dng sng l qu ln hay qu nh so vi mn hnh. Lc ny ta chnh cc nt Position c dng

sng nm trong nm hnh. c cc tr s ca tnh hiu ta lu s v tr s ca nt volt/DIV.

Mi my s c 2 dy o. Khi s dng dy no ta lu phi chnh thanh iu khin v knh , CH1 hoc

CH2.

Khi mun hin th c 2 knh so snh 2 dng tnh hiu ta chnh thanh iu khin v ch DUAL.

Ch ADD ca thanh iu khin c s dng trong trng hp mun cng hai tn hiu li vi nhau.

Xc nh tn s o

My hin sng khng th o c tn s ca tn hiu, ta c th xc nh c tn s tn hiu thng qua

rng ca mt chu k. V d chu k tn hiu l 1ms th ta suy ra c tn s ca tn hiu l 1 KHz.

Xc nh tr s trn thang o

Khi xc nh cc tr s ca tn hiu ta quan tm n tr s Time/DIV hoc Volt/. Sau khi m s hin th ta ch

vic nhn vi tr s ca Time/DIV hoc Volt/DIV l xong.

Tnh mo tn hiu

- My hin sng, ch yu ch th hin dng sng thi. My khng c cng dng o mo ca tn hiu. Ty

vo tng trng hp c th m ta s dng nhng cng thc thch o mo ca tn hiu

- o mo ca tn hiu bn s dng chc nng XY trn my hin sng

Cc my hin sng hai tia u c chc nng ny

Khi v ch XY th mn hnh Osciloscope ch c 1 chm sng

Bn a tn hiu Input ti knh X

Bn a tn hiu Output ti knh Y

iu chnh mc tn hiu v mc chun ca u vo b Khuch i ( 1Vdd)

iu chnh thang o V trn knh X v Y cho va khun mn hnh Oscilo

Nu b Amp ca bn tuyt i trung thc th bn bao gi cng ch nhn thy mt tia cho tm 45

Nhng khi thay i tn s hay tr ti ( loa) th tia qut ca mn hnh Oscilo s bin dng

Cn c vo gc nghing ngi ta tnh ra lch pha.

Cn c vo nh tn hiu b suy gim thang X ngi ta tnh ra mo bin %

S dng ngun chun

Thit b: Aditeg PS-3030DD

Thng s k thut

in p ra 0 - 30V DC Bc iu chnh 0,01% Vmax +3mv

Dng ra 3A

Gi tr ngun ra vi c tnh dng cao gii hn

Hiu in th khng i/Dng khng i

iu chnh th v iu chnh tinh

Vn k v Ampe K

Gii thch cc nt iu khin

Tt bt in

Nhm cc nt bm,

mn hnh v jack cm

ca ngun ra chun

th nht, Slave

Nhm cc nt bm,

mn hnh v jack cm

ca ngun ra chun

th hai, Master

Nhm cc nt bm v jack cm ca ngun ra

chun th ba.

C nh in p 5V v dng 3A, khng chnh.

Tng gim cng

dng in, t 0~3A Tng gim cng

dng in, t 0~3A Tng gim in p

dng in, t 0~30V

n bo hiu mu nu c

qu ti, chp 2 dy ngun

en,

1. n Led hin th in p volt ca ngun ra Master.

2. n Led hin th cng dng in Ampe ca ngun ra Master.

3. n Led hin th in p volt ca ngun ra Slave.

4. n Led hin th cng dng in Ampe ca ngun ra Slave.

5. iu chnh in p u ra ca ngun Master. ng thi cng iu chnh in p ra ti a ca ngun ra

Slave khi thit b hat ng ch song song (parallel) hoc tun t (series).

6. iu chnh cng dng in u ra ca ngun Master. ng thi cng iu chnh cng dng ti

a ca ngun ra Slave khi thit b hat ng ch song song hoc tun t, Series/Parallel Tracking

mode.

7. iu chnh in p u ra ca ngun Slave.

8. iu chnh cng dng in u ra ca ngun Slave.

9. n bo qu ti: n s sang nu ti ln hn 2.5V/3.3V/5V

10. n bo C.V ca ngun Master: n sang khi ngun Master l ngun p (tc l ngun to ra in p

cung cp khng i). Nu thit b ch lm vic Series/Parallel Tracking th c 2 ngun Master v

Slave u ch c php l ngun p thi.

11. n bo C.C ca ngun Master: n sang khi ngun Master l ngun dng (tc l ngun to ra dng

cung cp khng i).

12. n bo C.V ca ngun Slave: n sang khi ngun Slave l ngun p (tc l ngun to ra in p cung

cp khng i).

13. n bo C.C ca ngun Slave: n sang khi ngun Slave l ngun dng (tc l ngun to ra dng cung

cp khng i).

14. Xem thm 15.

15. Cc nt bm chn ch Tracking vi 3 ch lm vic l

a. Ch c lp (independent): khi c 2 nt bm ch u khng bm

ch ny, 2 ngun Master v Slave lm vic ring r, khng gy nh hng ti nhau.

b. Ch tun t (series tracking): khi nt bm bn tri bm, nt bn phi khng bm.

ch ny, in p ra ti a ca ngun slave c ly theo in p ra ca ngun Master, ng thi

theo nguyn tc, dng cc mu ca Slave ni thng, thng vi m cc mu en ca Master.

Nh vy, c 2 ngun dng nh c ghp li thnh mt vi mc in p iu chnh c tng gp

i. Ch , phi vn nt iu chnh dng ca 2 ngun Master, Slave a v ch ngun p.

c. Ch song song (parallel tracking): khi nt bm bn tri bm, nt bn phi bm, ng thi theo

nguyn tc, dng cc mu ca Slave v Master thng nhau, m cc mu en ca Slave v

Master thng nhau. Nh vy, c 2 ngun dng nh c ghp li thnh mt vi cng dng

in iu chnh c tng gp i.

16. u ra +: L dng cc, mu ca ngun Master

17. u tip t GND: Dng ni t v v thit b.

18. u ra -: L m cc, mu en ca ngun Master

19. u ra +: L dng cc, mu ca ngun Slave

20. u tip t GND: Dng ni t v v thit b.

21. u ra -: L m cc, mu en ca ngun Slave

22. Tt bt in cho thit b

23. u ra +: L dng cc, mu ca ngun c nh 5V/3A

24. u ra -: L m cc, mu en ca ngun c nh 5V/3A

S dng my pht xung chun

Tt bt in

u ra gm 2 kp ng.

Kp en l GND, cn tip

xc vi thit b bn

ngoi trc. Kp

cha xung dao ng

Cc nt bm iu chnh tn s ca xung.

Tn s xung = x

V d, nt bm ang l 10k th tn s ng vi mn hnh

di l 3.3 x 10k =33 kHz

Tinh chnh tn

s xung vi

cc gi tr l

Chn dng ca xung: vung hay

tam gic hay sin

Nt vn thay i in p lch:

in p u ra s c cng

thm mt lng offset. V d

Khng phi c y ca xung

l 0V. V vy, phi dng ng

h o li bit chnh xc

in p bng bao nhiu.

Nt vn thay i rng xung

vung, v ch xung vung.

rng xung l chia

cho . Trung

bnh l 50%

Thay i bin gia 2 nh

ca xung, (bao nhiu vol)

S dng breadboard

Thit b: Sunhayato SAD-12

S dng cm cc ic v u ni dy, xy dng bo mch th nghim

Cch u ni sn ca cc hng l trn breadboard

V d minh ha v mt bi thc hnh c s dng breadboard

Nguyn tc lp mch v kim tra

1. Phi kim tra xem mch c b ngn mch khng?

a. Khng ni mch vi ngun cp in

b. t ng h o ch o thng mch (biu tng ci loa)

c. o 2 ng ngun dng cc v m cc xem c thng nhau khng.

d. Nu c ting ku pip pip, tc l 2 cc ngun thng nhau b ngn mch kim tra xem 2

cc ngun b thng nhau u?

Phn mm TK-Gate

Cu hi 1: Windows

Em s dng b ci TK-Gate trn Windows c c khng?

B ci trn Windows c v khng n nh, thnh thong gy ra li treo ng dng. Thm ch l sau khi b treo

my, tt ng dng, ri chy li ng dng th cng khng c, m bt buc phi khi ng li my tnh.

Vy em hy kin nhn khi ng li my nu s dng phin bn trn windows.

Cu hi 2:Ubuntu wubi

Ti sao em gp thng bo li v gsim v libgsim khi tin hnh chy gi lp.

Li ny s gp khi chy Ubuntu bn gi lp wubi. Hy s dng bn TK-Gate trn Windows hoc ci t hn

my vt l Ubuntu.

Cu hi 3: version 2.0

Em s dng b ci TK-Gate version 2.0 c c khng?

B ci TK-gate phin bn 1.8 n nh hn TK-gate 2.0. version 2.0, vic ni dy gia cc module rt kh

khn.

Cu hi 4: Lu file

Ti sao khi em lu file thit k *.v th mn hnh hin ra thng bo li, khng cho ghi file v bo ghi tm vo file

*.v#xxxx no ?

Li ny xy ra khi chy TK-gate trn Ubuntu. Thng bo ny cho thy, file *.v khng c cp nht, m

buc phi to ra file *.v#xxxx mi. S xxxx, v d 1234, 5335, cng ln th cng mi. thun tin, chng ta

vn c lm vic bnh thng, lu file bnh thng, mc k thng bo li . Khi no lm xong, chng ta ch

vic ghi li file *.v#xxxx vo file *.v l c. Lnh trn ubuntu nh sau

$ mv ./sample.v#1234 ./sample.v

Cu hi 5: To pin in/out cho module

Cu hi: Khi ko th 1 module X no vo mt module khc s dng, lm sao khai bo cc cng

in/out cho module X?

Vi module X, cn phi di chut ti ng cnh ca hnh ch nht, bm chut phi, sau chn .. th mi c. Nu bm chut phi vo gia hnh ch nht ri bm Add th s khng c g xy ra c.

Hnh nh minh ha

Thamkho

Download http://www.pctu.edu.vn/Uploads/Syllabus/eae195cc-0637-4948-8371-

dd067c2974ee.doc

Hnh 0.1: My dao ng k.

i vi oscilloscope ny ta c 2 u o tn hiu tng ng vi 2 knh input, hnh 3.2. Mi u o gm c mt kp dng ni mass, u cn li tham kho ni mass ny o tn hiu hin th ra mn hnh LCD.

Mn hnh

LCD

Nt chc

nng

Nt ngun

Hnh 0.2 u o tn hiu ca oscilloscope.

Khi ng OSC v o th:

- Cm dy ngun v bt nt Power pha trn ca OSC. - Ch cho n khi mn hnh hin thng bo qu trnh self test thnh cng v nhn nt SAVE/RECALL mt trc bn tay phi ca OSC. - Ch menu Setup ang c chn v nhn nt bn cnh menu Recall Factory. Osc s quay tr li cc thng s ban u ca nh sn xut. Sau ny, bt k khi no khng hiu Osc ang hin th ci g, ta c th lp li cc bc trn thit lp li cc thng s mc nh cho Osc.

Hnh 0.3 Cc nt chc nng ca oscilloscope.

o test th:

- Ni u d ca knh 1 vo probe comp pha trn, t ca knh 1 vo ground ngay pha di, xem hnh 3.3 gc di bn tri. - Nhn nt AUTOSET gc pha trn bn phi. Lc ny Osc s t ng chnh chiu ngang, dc, v t ng iu khin trigger v hin th ra mn hnh LCD dng sng vung mu. - Nu mun hin th hai knh cng lc, nhn CH 2 MENU cho php hin th knh 2 v nhn AUTOSET li. - bc ny, ta ch xem xt knh 1 v cc nt iu chnh cho knh 1, knh 2 cng iu chnh tng t.

iuchnhknh 1:

- iu chnh v tr hin th theo chiu ng (Hnh 3.4): xoay nt Cursor1 bn menu VERTICAL. y ta xoay Cursor 1 sao cho dng sng nm ngay chnh gia mn hnh.

Hnh 0.4 Cc nt iu khin hin th theo chiu ng.

- iu chnh v tr hin th theo chiu ngang (Hnh 3.5): xoay nt menu HORIZONTAL iu chnh v tr ca dng sng hin th. y ta xoay cho dng sng nm chnh gia mn hnh.

Hnh 0.5 Cc nt iu khin hin th theo chiu ngang.

- iu chnh bc chia in th: nt VOLTS/DIV cho php iu chnh bc chia in th. Xoay v bn phi s lm tng nhy (lm gim ln hiu in th gia hai bc chia). - iu chnh bc chia thi gian: nt SEC/DIV iu khin bc chia thi gian. Xoay nt v bn phi s lm gim khong thi gian gia hai bc chia.

Hnh 0.6 Cc nt chc nng khc.

Xem dng sng mt thi im no :

- i khi ta mun quan st dng sng hin th ti mt thi im no , iu ny c thc hin bng cch s dng nt Run/Stops nm gc trn bn phi (Hnh 3.6).

S dng my hin sngGii thch cc nt iu khinChun ha my trc khi s dngMt s lu khi s dngXc nh tn s oXc nh tr s trn thang oTnh mo tn hiu

S dng ngun chunThng s k thutGii thch cc nt iu khin

S dng my pht xung chunS dng breadboardCch u ni sn ca cc hng l trn breadboardV d minh ha v mt bi thc hnh c s dng breadboard

Nguyn tc lp mch v kim traPhn mm TK-GateCu hi 1: WindowsCu hi 2:Ubuntu wubiCu hi 3: version 2.0Cu hi 4: Lu fileCu hi 5: To pin in/out cho module

Hnh nh minh haThamkho