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1 T EKT R O N IX
1
saao
OSCILLOSCOPE
1
N ST RU CTIO N M A NU A L
I
Tektronix, Inc.
.. Box 500
Beaverton, Oregon 97077 Serial Nu m ber
070-2139-01 F irst P ri nti ng APR 1976
W A RR A N TY
All T EK T R O N IX instrume n ts are warra n ted agai n st
d efective materials and wor k ma n s h ip fo r one year .
Any questions wit h res p ect to t h e warranty s h oul d
be ta k en up wit h yourTE K T R O N IX F ield E ngineeror
represe n tative .
All re q uests for repairs and re p lacement parts
s h ould be d irecte d to t h e T EK T R O N IX F iel d Office
or re pr ese n tative in you r area . T h is will assure you
t h e fastest p ossible service . P lease i n clu d e t h e
instrument Type Number or P art N um b er a n d Serial
Numbe r wit h all re q uests for parts or service .
S p ecificatio n s a n d price c h ange privileges reserved .
Copyrig h t c 1976 by Te k tro n ix, Inc ., Beaverto n ,
O r egon . P rinted in t h e U nite d States of America . All
rig h ts reserved . Contents of t h is pu blication may n ot
be reproduced in any form wit h out permission of
Te k tronix, Inc .
U .S .A . an d foreig n Te k tronix products covered by
U .S . and foreign patents and/or p atents p en d ing .
T EK T R O N IX is registered tra d emar k of Te k tronix,
Inc.
TA BLE O F CO N T EN TS
OPER ATI NG INST RU CTIO N S TABLE OF CO N TEN TS
SE CTIO N 1 O PERATI NG I NF ORM ATIO N Page
1-1
FI RST TIME OPERATIO N
Calibratio n Ch ec k 1-3
R ea d out 1-3
Beam F inder 1-3
Extern al Inte nsity Input 1-3
1-3
GENER AL OPER ATI N G I NF ORM ATIO N
Display Focus 1-3
Trace Alig n me n t Ad justme nt 1-4
Beam Finder 1-4
R eadout (Wor ks Only W it h 5400-Series Plug-In U nits) 1-4
Option 3, Exter nally P rogrammed Sevent h an d E ig hth R ea dout Words 1-4
Display Switc h i ng L ogic 1-4
Vertical Dis p lay Mo d e 1-5
1-5 - Operatio n
R aster Display 1-6
Inte n sity M odulation 1-6
Calibrator 1-6
Display Ph otograp hy 1-6
1-6
OPER ATING V O LTAG E
5400 Panel (Dust Cover) R emoval 1-6
Power Transformer 1-7
I N ST RUMENT CO NVER SIO N 1-8
R AC KM OUN TI NG 1-8
1-8 M ou nti ng M et hod
R ac k Dimensions 1-8
Installing The Slide-Out Trac ks 1-8
I nstallation An d Ad j ustment 1-11
Sli de-Out Trac k Maintenance 1-11
OPER ATING TEMPER AT URE 1-11
PLUG-IN UN ITS 1-11
Installation 1-11
1-12 Selectio n
B ASIC OSCI LL OSCO PE APPL ICATIO NS 1-12
Pea k -to- Pea k Voltage M easurements-AC 1-12
I nstantaneous V oltage Measurement-DC 1-13
Com p arison M easureme n ts 1-14
Time Period M easurement 1-15
Deter m ining F re q uency 1-15
R isetime M eas ureme nt 1-16
Time Difference Measurements 1-16
M ulti-trace Ph ase Difference M easu reme nt 1-17
H ig h Resolution Ph ase M easureme nt 1-18
5440
TA BLE O F CO N T EN TS (cont .) .
S E CTIO N 2 S PE CI F ICATIO N AN D PERF O RM A N C E C HE C K P age
2-1
SPE CI FICATIO N
POWER TO EXT ERNAL E Q U I PMEN T 2-5
PERF ORM AN CE C HE C K 2-6
Introduction 2-6
Test Eq ui pme nt R equired 2-6
Prelimi n ary Procedure 2-7
Performance Chec k Proce d ure 2-8
S ERV ICI N G INST RU CTIO NS TA BLE O F CO NTEN TS
S E CTIO N 3
CI RCU IT D ESC R IPTION
Introduction 3-1
I NTERFAC E CI R C U IT 3-1
C hop Oscillator 3-1
Divi der Circuit 3-1
Vertical Amplifier and V ertical Integrate d Switch i n g Circuit 3-1
H orizontal Amplifier 3-2
Trigger Am plifiers 3-2
-Axis Sign al 3-2
VERTICA L AMPLI F I ER 3-2
Delay Li n e 3-2
Am plifier 3-2
H OR IZO NTA L A MPL I F I ER CI R CU IT 3-3
Input Amplifier 3-3
Output Am p lifier 3-3
Z-AXIS A MPL IFI ER AN D CR T CI R CU IT 3-3
-Axis Am p lifier 3-3
H ig h-Voltage R egulator 3-4
H ig h-Voltage Outputs 3-4
CRT Control Circuits 3-4
L OW-VOLTAG E P OWER S UPPL Y AN D
CA LI BR ATO R CI R C U IT 3-4
P ower Input 3-4
L ow-Voltage R ectifiers and U nregulate d Out p ut 3-5
Low-Voltage R egulators 3-5
L ine Trigger 3-5
CRT H eater W inding 3-5
Calibrator 3-5
3-6
RE ADOUT SYST EM
Dis p lay Format 3-6
Develo p i ng the Disp lay 3-6
Circuit Analysis of R ea d out System 3-7
5440
TA BLE O F CO N T EN TS (cont.)
Page
M AI N T ENA N C E
S E CTIO N 4
PREVENTI VE M AI N T EN A N C E 4-1
CA B I NE T REM OVA L 4-1
C LEA N I N G 4-1
4-1 V IS U A L I N S PE CTIO N
4-2 LUBR ICATIO N
S EM ICO N D U CTO R CHE C K S 4-2
ADJU ST MEN T A F T ER REP AI R 4-2
T R O UBLES H OOTI N G 4-3
T R O UBLE S H OOTI N G AIDS 4-3
T R O UBLE S H OOTI N G E Q U I PMEN T 4-4
T R O UBLE S H OOTI N G T E C HN IQ UE S 4.-4
CO RRE CTI VE M AI N T EN A N C E 4-7
O B TAI N I N G REPL AC EMEN T P A RTS 4-7
SO L D ER I N G T E C HN IQ UE S 4-7
CO MP O NEN T REM OV A L A N D REP LAC EMEN T 4-8
AD JU ST MEN T A F T ER REPAI R 4-12
REP AC K AGI N G F O R S H I PMEN T 4-12
S E CTIO N 5 AD JU ST MEN T
5-1 I N T R OD U CTIO N
Te k tro n ix F iel d Service 5-1
PREL I M I N A R Y PR OC E D URE 5-1
5-1 P O WER S UPPL Y A N D CA L I BRATO R
C R T DIS PL AY 5-4
VERTICA L SYST EM ( U si n g Calibration F ixture) 5-5
VERTICA L SYST EM ( U sing 5 48) 5-7
HO R IZO N TA L SYST EM ( U sing Calibratio n F ixture) 5-8
HO R IZO N TA L SYSTEM ( U si n g 5 48) 5-10
5-12 RE ADO U T SYST EM
S E CTIO N 6 OPTION I NF O RM ATIO N
S E CTIO N 7 REPLAC E A BLE ELE CT R ICA L PA RTS
S E CTIO N 8 DIAG R A M S A N D CI R C U IT B OA R D I LLU ST R ATIO N S
S E CTIO N 9 REPL AC E A BLE ME C H A N ICA L P A R TS
CH A N G E I NF O RM ATIO N & T E ST E Q U I PMEN T
I
5440 Oscilloscope
Section 1-5440
O PER ATI N G I NF O R M ATIO N
The Te ktron ix 5440 Oscilloscope is solid-state instrument designed for ge neral-pur pose applications . Th is
i n strument h as th ree plug-in compartmen ts that acce pt 5000-series plug-in units to forma com p lete meas urement system .
To effectively use t h is instrume nt, the operation and capabilities of the instrument must be kn ow n . Th is section describes
front- p anel control fu nctions, giving first-time and general operating informatio n . In formatio n or( operating voltage,
' instrume nt co nversion, rac k mou n ti ng, operating temperature, and p lug-i n i nstallation is also included.
F I R ST TIME O PERATIO N Amplifie r Plug-in
'
Dis play On
Centere d Positio n
Steps 1 th roug h 19 of the followi ng procedure p rovi d e CH 1 V olts/Div .1
an operatio nal c hec k to verify satisfactory operation of th e CH 1 Variable V olts/Div Cal (fully cloc kwise)
oscilloscope and associated plug-ins . R efer to Fig . 1-1 for CH 1 I np ut Cou p li ng DC
' front-panel co ntrol and connector locations. Trigger CH 1
Mode CH 1
' 1 . For the following procedure, 5A-series amplifier
plug-i n sh ould be in one of th e vertical (left o r center) Time-Base Plug-in
pl ug-in compartments a nd 513-series time-base p lug-in
s h ould be in t he h orizo ntal (rig ht) com partment. Display Alternate (button out)
Position Ce ntere d
Main Sec/Div 5 ms
2. See Operati ng V oltage in th is sectio n before V ariable Seco n ds/Div Cal (f u lly cloc kwise)
proceed i ng . Set the POWER switch to off (pus hed in) and Mag Off (button out)
' co nn ect the 5440 to power source that meets th e voltage
Main Trig L evel Coun tercloc kwise
an d freque ncy req uirements of th is instrume nt .
Source Left (or R ig ht if the
am plifier p lug-in is in the
' 3. Turn the INT EN SITY and RE ADO UT I NT EN S co n- ce nter com partment)
trols counterclockwise and pull the POWER switch o u t to Coupling Auto Trig, AC
tur n th e i nstru me nt on . Set the front- panel co ntrols as Coupl, +Slo pe
follows : Mode Mai n Sweep
Op erating Information-5440
F OC US Control I NT EN SITY Co ntrol
P rovi desa dju st m en t to Co ntrols d isplay brig h t-
BEAM F I N DER
obtai n well-defined d is- ness .
Pu shbutton
play .
Br ings beam on-screen;
limits intensifie d display to
area insi de graticule.
RE ADO U T I N TENS
Co nt r ol
Co n trols brig h t n ess of th e
rea d out portio n of th e
CR T display . In t h e f u lly
co un terclockwise p ositio n ,
t h e readout system is in-
operative.
G R AT I LLUM Co n trol
Controls Graticule illumi-
nation .
POWER Switc h
Tu rns i n str u ment p ower on
or off .
CA L I BR ATOR Loop
Pr ovides positive-going
acc u rate 400-millivolt and
4-m illia mpere squ arewave
at frequ ency of twice t h e
li n e fre qu e ncy for cali b ra-
tio n and prob e compensa-
tio n .
I N TEN SITY I NPU T
Con n ector
Per m its a pp lication of Z-
axis signals to th e C R T
(DC couple d ) . Positive-
going signal increases i n ten-
sity .
2139-02
Fig . 1-1. Fr ont- an d rea r -panel cont r ols an d connecto r s.
Operating I n formatio n -5440
4 . Advance t h e I N T EN SITY control u n til t h e trace is at 14 . Set t h e time- b ase unit for magnifie d o peration .
t h e d esired viewing level . T h e trace s h oul d a p p ear near t h e N otice t h at t h e rea d out d is p lay c h a n ges to indicate t h e
graticule center . correct magnified sweep rate . If readout-co d ed 10
probe is available for use wit h t h e vertical u n it, install it on
t h e i n p ut co n nector of t h e vertical p lug-in . N otice t h at t h e
5 . Connect a 1 p robe, or test lea d from t h e amplifier d eflection factor i n dicate d by t h e readout is increased by
i
p lug-i n n put co nn ector to t h e CA L I BR ATO R loop . 10 times w h en t h e probe is a dd ed . R etur n t h e time-base
unitto normal sweep op eration an d disco nn ectt h e p robe .
6 . Tu rn th e M ain Trig L evel control cloc k wise u n til
stable d isplay is obtained . Ad j ust t h e vertical an d h orizo n - 15 . N otice t h at th e read out from p articular p lug-in
occupies sp ecific locatio n on t h e d is p lay area . If eit h er of
tal Position co n trols so t h at t h e display is centere d
vertically and starts at t h e left edge of t h e graticule . t h evertical p lug-in units is dual-trace u n it, notice t h at t h e
rea d out for C h a n nel 2 a pp ears wit h i n th e lower division of
t h e crt below t h e rea d out for C h a nn el 1 .
7 . A dj ust t h e F OC U S control for sh ar p , well-define d
dis p lay over t h e e n tire trace le n gt h .
B eam F inder
16 . M ove t h e display off-screen wit h th e vertical
8 . Discon n ect t h e input sig n al a n d position t h e trace p osition co n trol .
vertically so t h at it coi n cides wit h t h e ce n ter h orizo n tal line
of t h e graticule .
17 . P us h t h e BEAM F I N D ER button and observe t h at
t h e d is p lay compresses i n to t h e scree n area . R epositio n
9 . If t h e trace is not parallel wit h th e center h orizo n tal t he d is p lay to screen ce n ter an d release t h e BEAM
line, see Trace Alignment A d j ustme n t i n th is section . F I N D ER button .
10 . R otate t h e G R AT I LLUM control t h roug h out its
E xternal Inte n sity In p ut
range and notice t h at t h e graticule lines are illuminate d as
t h e control is tur n ed cloc k wise . Set t h e control so 18 . Co nn ect 5 volt, 1 kH z si n e-wave or sq uare-wave
graticule lines are illumi n ated as desire d . signal to t h e I N T EN SITY I NPU T connector on t h e
rear p anel . Also, use t h e sig nal to externally trigger t h e
time-base p lug-i n .
Calibration C hec k
11 . M ove t h e trace two d ivisions below graticulecenter 19 . Slowly rotate th e I N T EN SITY co n trol counter-
a n d reconnect t h e calibrator sig n al to t h e am p lifier p lug-in cloc k wise until th e trace appears to be series of dimmed
in p ut connector . an d brig h te n ed segme n ts . T h e brig h te n e d segments
correspo n d wit h t h e to p s of t h e calibrator squarewaves .
12 . T h e dis p lay s h ould be four d ivisio n s in am p litu d e
wit h six complete cycles (five complete cycles for50- h ertz
li n e freq ue n cy) s h ow n h orizontally . An i n correct d isplay
in d icates t h at t h e oscillosoc p e mai n frame or p lug-ins G ENER A L OPER ATI N G I NF O RM ATIO N
nee d to be recalibrate d .
Display F ocus
R eadout If well-defined dis p lay cannot be obtai n ed wit h th e
13 . Turn t h e READO U T I N T EN S control cloc k wise F OC U S co n trol, even at low inte n sity setti n gs, a d j ustme n t
u n til an al p h anumeric dis p lay is visible wit h i n th e to p or of th e internal astigmatism co n trol may be require d .
bottom divisio n of t h e crt (reset t h e F OC U S a dj ustme n t if
n ecessary for best d efi n itio n of t h e readout) . C h a n ge th e
Volts/Div switc h of t h e am p lifier p lug-in t h at is selecte d for To c h ec k for proper setting of t h e Astig control, slowly
dis p lay . N otice t h at t h e readout p ortio n of t h e d isplay tur n t h e F OC U S control t h roug h t h e optim u m setting wit h
ch anges as t h e deflection factor is c h anged . L i k ewise, signal d isplaye d on t h e crt scree n . If t h e Astig co n trol is
c h ange th e Sec/Div switc h of t h e time-base u n it t h at is correctly set, th e vertical and h orizontal p ortions of t h e
selecte d for d is p lay . N otice t h at t h e rea d out dis p lay forth e trace will come into s h ar p est focus at t h e same position of
time-base u nit c h anges also as t h e sweep rate is c h ange d . t h e F OC U S co n trol .
Operati n g I n formation-5440
Trace Alignment Ad justment dis p laye d withi n t he to p d ivisio n of th e gratic u le and th e
rea d out from Chann el 2 is dis p layed directly below with in
If free-run n ing trace is not p arallel with t h e h orizontal
the bottom division of the graticule . Only th e readout from
gratic u le lines, set the Trace R otation ad j ustme nt (internal
p lug-in ch annels that are selecte d by dis p lay switches, or
ad justment) as follows: Positio n th e trace to th e ce nter
by t h e mode switc hes of dual-c hannel p lug-i ns, ap pear in
horizontal li ne an d ad just the Trace R otation adj ustment
th e readout display .
so th at th e trace is parallel with t h e h orizontal graticule
lines.
T h e RE ADOU T I NT EN S control determines t he i nten-
sity of only the r ea d out portio n of the display i nd ependent
B eam F inder of the ot her traces . The readout system is i no p erative in
Th e BEAM FI N DER switch provides means of t h e fully counterclockwise OFF p ositio n Th is may be
locating d is play that overscans the viewi ng area either desirable when the to p and bottom divisions of the
vertically or horizontally . Wh en t he BEAM FI NDER switc h graticule are to be use d for waveform dis p lay, or when the
is p ressed , the display is com p resse d within the graticule trace interruptions necessary to d is p lay characters do not
area and the display intensity is i n creased . To locate and allow satisfactory waveform display to be obtaine d .
re position an overscann ed d is p lay, use t h e following
proced ure :
Op tion 3, E xter nally P rogrammed Sevent h and
1 . Press the BEAM FI N D ER switch , h ol d it in, then E ig h th R eadout Wor d s
increase th e vertical and horizo ntal deflectio n factors until Th is o ption a d ds 25-p in connectorto the rear- p anel of
the d isplay is with i n t he graticule area . t h e 5440 t h roug h wh ic h two ten-character readout words
ca n be dis p laye d on the crt, see Fig . 1-2 .
2 . Ad j ust the vertical an d horizontal position controls
to ce n ter the d is play about the vertical and horizontal Display Switc h ing L ogic
centerlines .
Th e electro n ic switc h i ng for time-s h ared d isplays is
p roduced at the plug-i n in terface with in th e main frame;
3 . R elease th e BEAM F I N DER switch ; the d isplay h owever, the switch ing logic is selected i n t he p lug-in
should remain with in the viewing area . units . The system allows any combin ation of p lug-i ns a n d
Dis p lay switc h setti n gs . R efer to the indivi d ual plug-in
ma n uals for specific capabilities an d operati n g
Readout (Wor ks Only Wit h 5400-Series Plug-in procedures .
U nits)
Left Rig ht
Th e rea d out system of the power su pp ly/amplifier and V ertical V ertical Horizontal H orizontal
or M ai n or Delayed
d isplay mo dules allows alp hanumeric d is p lay of informa- Cha nnel 1 Channel 1
tion on the crt, alo n g with t h e a nalog waveform displays .
The information disp laye d by the read out system is
obtained from th e plug-in units that are installe d in th e
p lug-in compartments . The characters of t h e readout
display are written by the crt beam on time-s h ared basis
with t h e signal waveforms.
The R eadout System operates i n free-r u n ning mo de
to in terrupt the waveform d is play to p resent c h aracters .
The waveform d is p lay is interru pted for only about 20
microseconds for each c haracter th at is d is p laye d .
Th e readout information fro m eac h p lug-in is called
word . U p to six (eig ht wit h Op tion 3) words of rea d out Left Rig ht E xter nal E xternal
V ertical V ertical Word Word
information can be d is played . The location at whic h each Channel 2 C hannel 2 (C hannel) 1 (C hann el) 2
readout word is p resented is fixed an d is d irectly relate d to
the plug-i n u n it an d ch annel from wh ic h it originated . Fig . E xter nal readout
1-2 s hows the area of the g raticu le where th e readout from informatio n when
eac h plug-i n unit chann el is dis playe d (external readout option is installed . 2139-03
programmi n g is available only with Op tion 3) . Notice that Fig . 1-2. Locatio n of readout on th e crt identifying the origi-
the readout from Ch an nel 1 of each p lug-in un it is nating pl ug-in un it an d c han nel (and exte rnal, if Optio n 3 is in-
stalle d).
O perating Information-5440
Vertical Disp lay Mode
Display On . To d isplay sig nal, the Display button of
t h e ap p licable vertical p l ug-in u nit must be pus he d in to
At sweep rates faster t h an approximately 1 s, the activate th e un it . If two plug-ins are installed in t he vertical
5810, 512, an d 5813 Time B ase plug-in trigger compartments and only the signal from one of the u nits is
circuit will riot respond fast enough , when used in wa nte d , set the Display switch of th e unwa nte d u n it to Off
5440, to allow the leading edge of the display to be (butto n out) . If neit her plug-i n is activate d , the sig nal from
observed. the left unit is d isplayed . Bot h p lug-ins can be activated for
multi-trace d is plays .
Differences in wiring between th e 5100-series and
5400-series oscilloscope plug-in interfaces will not Alte rn ate M ode. T he alter nate p osition of the time-base
allow the use of the composite trigger mode of the un it Dis p lay switch produces dis play t hat alternates
5810, 5812, and 5813 Time B ase plug-ins when betwee n activate d plug-ins and amplifier chann els with
used in th e 5440 . 11 the time base units a re put in this eac h sweep of the crt . The switch ing sequence is describ-
mo de, they will trigger off the left vertical plug-in ed u nd er Dis p lay Switch ing Logic i n t h is section .
only . Althoug h th e Alternate mode can be use d at all sweep
rates, the C ho p mode provides more satisfactory display
at swee p rates from about one milliseco nd/division to five
seco nd s/division . At t h ese slower swee p rates, alternate-
V ertical Plug-in Compa rtments . Wh en vertical p lug-i n mode switc hing b ecomes difficult to view .
is in t h e active mo d e (Display bu tton p us hed in), logic
level is a pp lied to the switch ing circuit in t he mainframe
and d is p lay from th is plug-in will occur. Wh en two p lug- C h opped M ode. T he C ho p p osition of the time-b ase
ins are both active in the vertical compartments, multi- u nit Display switch p ro d uces disp lay that is electronical-
trace disp lay will occur (Altern ate or Choppe d ) . Wh en no ly switched between chan nels at 10G- kilo hertz rate . The
plug-i n is in th e active mode, the sig nal from the left switch ing se quence is discussed earlier . In ge neral, the
compartment will b e d isplayed . time-base un it operate d Cho p mo de p rovi des the best d is p lay at swee p rates
in one of the vertical com p artments h as perma nen t slower than about one millisecond/diviision or whenever
in ter nal connection to apply logic level to t h e switchi ng du al-trace, si ngle-s hot ph enomena are to be disp layed. At
circuit; th us, vertical trace p ro d uced by this unit will faster swee p rates, the chop ped switch ing becomes
always be d is p layed. ap p arent and may i n terfere with t he dis p lay.
H orizontal Plug-in Compartmen t. Alternate or Dual-Sweep Displays . Wh e n d ual-swee p time-base
Ch op p ed dis p lay switc hing is selected on time-base u n it unit is o perated in th e h orizontal compartment, the
operated i n t he h orizo ntal compartment. Wh en t h e alternate an d c hopp ed time-s hared switching for either
Dis p lay switch is out (Alt), negative impulse is sup p lied the or sweep is i d entical to that for si ngle time-base
at the e n d of the sweep to allow alternate switch ing un it . H owever, if bot h th e an d swee ps are operating,
betwee n plug-i ns and p lug-i n ch ann els . Wh en th e Disp lay the 5440 operates in t he in d epende nt pairs mo de . Un der
switch is pus hed in (C h op), ch o p p ed d isplay will a p pear th is cond ition, the left vertical u n it is always disp laye d at
if multi-trace display is re q uired by the p lug-ins in th e the swee p rate of the time basea nd t he rightvertical unit
vertical com p artme nts . vertical plug-in u nit operated i n is disp laye d at the swee p rate of the time-base (non-
th e h orizo ntal com partment h as permanent internal delayed swee p only) . Th is results i n two displays that h ave
co nn ectio n to provide choppe d d is p lay if it is required . comp letely in d e p e nd en t vertical deflectio n an d ch o pped
or altern ate swee p switc hing .
Switching Se q ue n ce . Four dis p lay time slots are
provided on time-s h ari ng b asis . Wh en two vertical p l ug- - Op eratio n
ins are active, eac h receives two time slots, so the
switch ing se q uence is : left, left, center, ce nter, etc . The In some app licatio n s, it is desirable to display one
two time slots allotted to eac h plug-in are d ivided between signal versus a n ot h er (X-Y) rather than against an internal
amplifier chan nels in dual-trace un it ; if two d ual-trace swee p . T he flexibility of the p lug-in un its available for use
p lug-ins are active, the n th e switch in g se q ue nce is : left with th e 5440 p rovides means fora pp lying signal to th e
Chann el 1, left C hannel 2, ce nter Ch ann el 1, ce n ter h orizontal deflectio n system for this type of d is play. Some
Ch annel 2, etc . If only one vertical plug-i n is active, it of the 513-series time-base u nits ca n be o p erated as
receives all four time slots . The switc h in g seq uence is the am p lifiers, in addition to their normal use as time-base
same for both th e Alternate a nd C h oppe d display mo des . generators .
O perating Information-5440
R aster Dis p lay Dis p lay Ph otograp h y
raster-ty p e dis p lay ca n be use d to effectively increase permanent record of t h e crt display ca n be obtained
t h e a p pare n t sweep lengt h . F or t h is type of d is p lay, t h e wit h an oscilloscope camera system . T h e crt bezel of t h e
trace is d eflecte d bot h vertically an d h orizontally by 5440 provides integral mou n ti n g for Tek tronix os-
sawtoot h signals, and is accomplis h ed by installi n g 513-
ma cillosco p e camera . T h e instructio n n uals for t h e
series time-base u n it i n th e left vertical compartment, as Tektronix oscilloscope cameras include complete i n struc
well as one i n t h e h orizo n tal com p artme n t . N ormally, t h e tio n s for obtaining waveform ph otograp h s .
unit in t h e vertical compartment s h ould be set to slower
sweep rate t h an t h e one i n th e h orizontal com p artment ;
t h e number of horizo n tal traces in t h e raster d e p en d s upon O PERATI N G V O LTAG E
th e ratio between t h e two swee p rates . Information ca n be
d is p laye d on t h e raster using t h e Ext I n tensity I n p ut to
p rovide intensity modulation of t h e d is p lay . T h is type of
raster d is p lay ca n be used to provi d e television-ty p e
d is p lay .
Th is instrument is designed for o peration from
power source with its n eutral at or near eart h
I n tensity Modulation (groun d ) potential, and wit h se p arate safety-eart h
conductor. It is not intended for operation from two
I n te n sity (Z-Axis) mo d ulatio n ca n be use d to relate phases of mult -p h ase system, oracross t h e legs of
t h ird item of electrical p h enomena to t h e vertical (Y-Axis) single-p h ase, three-wire system .
an d th e h orizontal (X-Axis) coord i n ates wit h out affecting
t h e waves h ape of t h e d isplaye d signal . T h e -Axis
modulati n g sig n al, a pp lie d to t h e I N T EN SITY I NPU T, 5400 P anel (Dust Cover) R emoval
c h a n ges t h e i n te n sity of t h e d is p laye d waveform to
p rovi d e t h is type of display . T h e voltage amplitude
re q uire d for visible trace mo d ulation d e p e nd s on t h e W A RN I N G
setti n g of t h e I N T EN SITY control . About +5 volts will turn
on t h e d isplay to n ormal brig h t n ess level from an off Dangerous potentials exist at several points
level, a n d about -5 volts will turn t h e d is p lay off from th roug h out th e oscilloscope . Wh en th e instrument
n ormal brig h tness level . "Gray scale" intensity mo d ula- must be operated wit h th e cabinet pa n els removed ,
tio n ca n be obtaine d by a pp lyi n g sig n als betwee n t h ese do not touc h ex p osed connections or com p onents .
levels . M aximum safe input voltage is