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hing 50Ωto

+1=1

.8

+

50

b

addi

by

thejun

d

an

dpu

lse

sine,

TIPLIERsettings

MUL

hthatthe

ο/ο, i.e.,

80

UEN

CY

Q

than1,the

frequency

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.

R'

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1

125Ω.

.77

1=4

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emod

ified

to

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ctionof

herresistor

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an

ng anot

waveformsisalways

square,ortriangle

of

waveformhas

ncyequals

fre

que

dial setting

Hz

retrace/off

results

equals

i

n duty

approximately

time

rovide

d Rz.

1

or

.

For

cycles

is

REV

197

Β

JUL

.

8

O

PER

ATIO

OperatingInstru

ctions-FG

501

N

Free-

Runn

following

T

he

waveform

1.SettheA

p

osition

andtheOFFSETcontroltot

position.Ch

2.Set

waveform

ingOu

tput

procedure

withvariable

output

MPL

controltothefullycou

eckthatthePHASE

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CTIO

.

the

(seeFig.1-5)

providesαfr

frequencyand

n

co

N

selector

trolis

ee-running
amplitude

nterclockwise

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he 0

pushed

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e d

tered)

in (off)

esired

Gated(Burst)

GAT

.

out
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intheburst
output

.

the

remains q

signal
t

b
durationbyt

Output

Α

gating

signalof2to15Vamplitude appliedtothe
EINPUTconnector
will

provideαburst

an

wit

hedurationofthe

dependonthegatingsignaldur

frequencyselected.Whenthegati

zero

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uiescent

Si

ngle

cycles

withα

heFG

501 ou

urst

can be approximated bydividing

E

INPU

GAT

generator

un

tilth

enext

canbe obtained

periodapproximately

tput

waveform.T

he p

eriodoftheFG

T

OUTPUT

dVariablePhase

hthePHASEcontrolpulled

of

cycles

burstandnu

completes

attheOUTPU

mberofcycles

atio

ng

signal

its

last

gating

signal

by applyingα
equaltotheperio

henumber of

thegating

501

outputfreque

n andt

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.

gati

d

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signal

ncy

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he

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r

.

Fig.

1-5

.Outputwaveforms

3.Selectthe

selectorand

MULTIPLIER
FREQUEN

i.e.,

output

VERNIER

d

urationof

MUL
underOp

CY

MULTIPLIER

frequency

control

rampand

TIPLIERsetting.See

eratingConsid

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FREQUEN

selectoris
Hzdial

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calibrated

is

isinthe

pulse

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quency

CY

Hzdial

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fully

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whenthe

clockwiseposition.

he FG501

htheMULTIPLIER

.

Forexample,ifthe

10

5positionandth

freque

ncyis500kHz

CY

Hz

FREQUEN

waveformsisdependentont
Duration

erations

ofRampsandPulses

for

further

setting.Th

information.

4.ConnecttheloadtotheOUTPUTconnectorand

adjusttheAMPLcon

Var

iable

DC

Pull

outwardontheOFF

atSN

13020000)topositio

t

waveform.Forexample,+5V

outpu

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the

do

+12.5Vdo+peakacwh

d

o+pdakac

trol

forthedesired outputamplitude.

Offset

SETcon

nth

e do

trol
level

ρ-ρ

ile-5V

of offset

outputto+2.5Vand-5

switcha

(pull

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of offset

willincr

outputto+5

willred

V

.

.

The

dded

ease

and

uceth

GATEINPU

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PH

AS

T

AG

e

;

e

CY

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he

0

trol

at

°

1431-04

GAT

E

OUTPUT

I

NPU

PHASEcon

T

PHASEcontr

ol at90°LEAD

e

Fig.

1-6.Single

cycleoutput

withvariablephase

.

REV.C

JUL

197

8





Op

erating

Instructions-FG

501

T

he ph

ase

(start level)ofthewaveform

varied

±90° bypulling

either

(centered)position

counterclockwise

(seeFig.1-6)

burstisreferencedtothe

p

oint.

Output

d

uration

(VCF)

V

oltage-Controlled

T

swept
signaltot

V

CFinput

frequency

by

applying

signal to

he outputfre

withinα

heVC

signal

t

h

V

e

quen

rangeof1000:1by ap

FINPUTco

determineswhich d

out

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turningthePH

or

sine

or

e

canb

variedduringt

α voltage-con

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FINPUTconn

F

requency

cyofany

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n

nector.Thepolarity ofthe

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wise fromthe

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T

h

haseoft

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e

p

triangle

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trolled

ector

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waveform

plyi

irectio

burst

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he ou

trol

tput

AS

heburst

uen

freq

cy

.

Output

can

be

ng α0to10V

ntheoutput

S

WEPTFRE

be

0

RANG

frequency

TIPLIERselector

MUL

signal

1-7(Α),α-

sh

owninFig.

Th

p

assesthesensitive

Q

UEN

hefrequen

t

sweeps

sweepsthefrequencyupwar

signal

maximum

e

H

z

CY

dial,i.e.,<.1to1.Th

cydoes

from

and

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1-7(Β)

.

swept

fre

uncalibratedrangeofthe

sweepatleastαrangeof1000
recommendedthattheFREQUEN
an d α

Oto-10VsignalbeappliedtotheVC

T

he output

α

FREQUEN

1-7(Β) .Itmay
obtai
frequency

UEN

CY

O

willthussweepdownwardatleast

CY

Hz

dial settingof10

be

necessarytovary

nthefull

1000:1swept

desired.

E

the

fre

FREQUEN

the

frequency

uency

q

d as sh

set by

Hz

d

ial

CY

; i.e.,α+

own

downwar

quencyrangeof1000:1en

erefore,toensureth

CY

Hz

dial

setat10

be

FINconnector

1000

CA

nin Fig.

L

control

range

asshow

the

thelowest

or

t

he

inFig

d as

com-

FRE-

:1,

it

:1

from

swept

.

at

is

.

to

V

C

INPU

OUTPUT

F

T 0

+10

VC

INPU

(

ΙΙΙΙΙΙΗΙΙΙΙΙΙΙΙΙΠΠΠΠΠΠλΓΙΠΜ

Fig.

~

1-7.SweptFrequen

ΙΙΠΓ

1

OUTPUT

F 0

T

_10

ange

cy

r

with10Vsignalsap

plied

V

C

F

I

NPU

T

OUTPUT

toVCFIN

+5

0

_5

conn

ector.

REV.Β

1431-05

JUL

1978

An

input

signal

level

will

also

the

center

frequency

FREQUENCY

Since

theVCF
relationship,
minedfrom

H

oldMode

the

theVCF

Three detented H

the

lowest
switchingtoany
canbestopped

there

until

three

the

that

varies

symmetrically

sweepthe
HzdialasshowninFig.

input

frequency

one

at

its

MULTIPLIER

generator

setby

the

amplitudevsfrequencyisα

output

input

amplitude

OLD

positions

MULTIPLIER

the H

of

instantaneous

OLD

symmetrically

MULTIPLIER

range

.

are p

selector

positions,

voltage

selector

α0

about

about

selector

1-7(C)

can

rovided

positions.By

the generator

level

settingischanged

.

be

between

andheld

an

linear

d

eter-

Operating Instructions-FG

V

d

.

TRIG

W

aveform

Triangle

aveform

W

SineWave

SquareWave

TRIG

W

aveform

501

OUTPUT

OUTPUT

T

rigger

the
trigger
selected
Hz
for
times the

Out

ATTL-compatible+2

TRIG

OUTPUT

output

the

by

(seeFig.1-8).When

dial
ramp

or pulse,

d

ial

put

.5Vsquare

connector.The

d

etermined

is

MULTIPLIER

the

thetrigger

indications.Output

output

isavailablefrom

wave

frequency

by the

selector

FUNCTION

output

and

FREQUENCY

selectorisset

frequencyisabout1.6

impedance

of

frequency

600Ω.

is

the

Duty
theduty

Fig.

1-8.Phase

OUTPUT

cycleofthe

cycleofthe

elationshipsbetween

r

and

TRIG

TRIG

OUTPUT

OUTPUT

OUTPUT

connectors

waveform

waveform

various

.

.

follows

waveforms

1431-18

from

REV.Β

JUL

1978

Oper

ating

Instructions-FG

501

R

esponse

T

heFG501

responsecharacteristics

application

t

he

generator
desiredwaveform
device
over
can

be

The

determining
sensitive
oftheFG

F)

(V

C

informatio

1.Connecttheequipment

2.Setthe
dial
(depen ding

Analysis

is

particularly

utilizestheVC

rangeoffrequencies.Βγ

over α

anotherFG501

from

dertest

un

selectedran

α

observedonαmonitoring

followingproceduredescribes

devicethatoperates

501

OutputdiscussionunderOp

n

forthedesire

and

sweepingthewaveform

ge,

various

responsecharacteristics

.Refer toth

.

MULTIPLIER

d

upper

thedirectionyou

on

A

dfordetermi

suite

circuitsorsystems.Th

of

Fin

putoft

he FG501toswee

(or

equ

nse ch

respo

oscilloscope.

technique

α

of

any

withinthe

eVoltage-Controlled

as s

selectorand

or

frequency

eration

h

owninFig.

FREQUEN

lower

wishto

for

fre

que

sweep)

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applying

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aracteristics

frequency-

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nt)to

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ditional

a

1-9

ncy

.

ICATIO

ning

is

p

the

α

for

range

ncy

.

CY

Hz

limit

N

S

3.Applythe
connector.(
frequency
whileαnegative-going

4

t

hedesired

5.Observetheresponse

monitoring

The

aracteristic

ch
the

FREQUEN
characteristic
that

upwardsfrom

Adjustthe

.

frequency

V

CFinput

CY

frequency

esired

d

ositive-going

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p

amplitude

output

oscilloscope

fre

occurs

waveform,

Hz

dial

observe

theFREQUEN

on

q

atwhich

can

d

waveform

waveform

theFREQUEN

waveform

uency

.

be

to

inthe

will

oftheVCFinput

range

ch

α

eterminedby

d

t

henmanuallyadj

againob

swept

CYHzdial

toth

e

VC

will

swee

CY

Hz

dial

swee

p

d

ow

waveform

.

aracteristics

layedrespo

dis

p

first

usting

tainth

eparticular

display

and

.

FINPU

t

p

setting

n

wards

t

on

nse

removing

the

reading

T

he

.

for

he

Fig.

1-9.Analyzingcircuitor

system

response.

REV.Β

JUL

1978

Operating

Instructions-FG

501

Tone-Burst

M

ultiplication

The F

fre

q

uency

devices

Generationor

G

501

canbeusedasαtone-burst

lier

multi

p

T

hisapplicationutilizesαrampgen

.

astheTEKTRONIXRG

p

ulse

generator,

gating

signal

The

following

obtaini

ng α

from

theFG

V

ariable

(VCF)

Ph aseandtheVoltage-Controlled-Frequency

Output

information

1.Connectthe

suchasth

source

proce

tone-burstorfrequency

501

.Refer totheGated(Burst)

discussions underOp

.

equipment

Steppe

for

chec

501,asαVCF

e TEKTRON

.

d ure describes

asshowninFig.

d

F

requency

generator

kington

e-controlle

erator,

signal

sourceand

IXPG

α

techniquefor

multiplied

501,

suc

as α

output

Outputand

erationforadditional

1-10

.

or

generator

d
h

α

n

umber
Adjustthe
width.

FREQUEN
(upper
ramp).Then,adj
other

h

c
input

2.Pull

outtheFG501

PHASEcontrol.Settheram

forthedesiredrampduratio

3.Adjustthepulse
of

bursts withintheselecte

pulse

4.Selectthesweepfre
CY

Hz

or

lower

swept

frequency

V

ariousotherton

aracteristics

can

generator

d

generator

uration

quen cyran

dial

for

one

limit

de

pen

dingont

ustthe

rampgeneratoramplitudeforthe

limit

.

e-burst

be obtainedbyusi

periodfor

en doftheswept

frequency

or

waveforms,i.e.,triangle,sine,square,

he d

.

esire

uration

n an d

d

ram

polarity

t

p d

forthedesiredburst

gebyadj

ustingt

he

range

he p

olarityoft

he

multiplied

ngdifferent

etc

gating

.

p

d

.

V

FINPUT*

C

GAT

E

Tone-Burst

Stepped F

O

NPUT*

I

re

utput

r

o
en

cy

qu

1141' ίάϋυυ

*Gating

pulse

synchronize

ν

ι

withVCF RAMP

d

.

REVΑ,

JUN

197

1431-07

Fig.

1-10.Tone-burstgeneratio

n orste

ppedfr

equencymultiplication.

8

S

PE

CI

F

ICATIO

N

Section2-FG

501

erformance

P

electricalch

Th

e

F

G

501 has been

b

etween

temperature

noted

temperatureab

F

F

.

requency

R

ange

Sine
andTriangle

Accuracy

R

esolution

+200Cand

b

orcedair

C

haracte

W

ave,Squ

D

andis

+50°C

PERF

operatingatan

A

N

Conditions

aracteristics

calibratedatanambient

+300C

etween0°Cand

circulationisrequ

ove

+40°C

.

r

istic

areWave,

O

PE

S

are

vali

d onlyifthe

temperature

ambient

unlessotherwise

iredforamb

ELECTR

P

erformance

0

.01Hzto1MHz

W

ithin3ο/οoffull

.1to1uncalibrated

RM

A

N

CIFICATIO

Onlyth
quirements
are

normally
procedureofthis
Informationcolum
mi nimum

ient

ICA

LCHARACT

scale1to10;

Table

R

equirement

in

9decade

.

toleranceran
q

uire

verification

2-1

ER

steps

C

E

C

HE

C

N

ose

items

listedin

columnofth

verifiedwhendoing

manual.Items

n are

erformancecharacteristics

p

ges

are sp

only

ISTICS

.

1

partin10°offull

FREQUEN

lectrical

e

E

listedintheSupplemental

eitherexp

ecified,

afterrepairs

Suppleme

CY

VERNIERcontr

K

t

he P

erformanceRe-

Characteristics table

P

the

and

orp

n

talInfor

scale

erforma

lanatory

whic

nceCheck

notes or

whic

for

h normallyre-

artsrep

matio

wit

lacement

h

ol

h

no

.

n

.

Stability

Temperature

Time

P

ulseand R

Time

Symmetry

SineWave,Squar
andTriangle

REV.Β

JUL

197

ampran

8

ge

eWave,

W

ithin1ο/ο

on

calibratedportion(1

of

FREQUEN

+50°C.

from0.001Hzto1MHz

CY

Hz

dial,

to

+20°C

10)
to

W

ithi

n 2

ο/ο

from0.1Hzto1MHz,
andwithin10
0

.1Hz,0°C

ithi

n 0.1ο/ο

W
W

ithi

n 0

-2Χdial

PLIERat10-'to=1.6Χ

ting

withMULTIPLIER

setting

W

ithi

n 10

tion (0

d

ial

.

.1

.25%

.

to

ο/οfr

+50°C.

to

for

10 minutes

for

setting

ο/οon

withMUL

uncalibratedpo

1) of

om

24hours

FREQUEN

0

.001Hz

dial
AT

.

.

TI-

set-

10

CYHz

to

5

r-

Specificatio

Amplitu

d e

Stability

Tem

Time

H

oldM

Offset

n andPerformance

C

h

aracteristic

(excluding

erature

p

ode

offset)

Stability

k-FG501

Chec

P

erformanceRequirement

S

N

B130000-up
circuit.10
Sine,

triangle,andsquarewave
amplitudes
singlesettingofA

.

trol

B

elow

n

trolprovi

co
circuitand7.5Vρ-ρin

50Ωload.

Table

2-1

(cont)

:

20

V ρ-ρopen

V

into50Ω

ρ-ρ

matched

NΒ130000,OUTPU

S

withi

MPL

ITUDEcon-

des 15Vρ-ρopen

to

load.

n 5ο/ο

for

SupplementalInfor

P

ower-s

upplylimiting

p

ressionofoutputwaveform

w

hen

imum

n

eously

maximum
offset

.

amplitudeand

are

used

mation

causes

simulta-

com-

max-

T

1MHz

Within2ο/ο
Wtihin10

from0.1Hzto

ο/ο

from

0

0.1Hz,0°Cto+500C
ο/οfor

With

in0

Within 0

Within

h

ourat

.1
.25%

ο

/οoffull

5

+25°C

10 minutes

for

24hours

out

on

0

.001Hzto

.

putvoltagein

.001Hzrange

.

.

.

1

.

Amplitude

I

O

n

to

p

en

Into50ohmLoa

R

ange

IntoOpenCirc

Into50ohmLoad

Output
Trigger

Impedance

Outpu

Amplitu

F

reque

t

de

ncy

TriangleandRam

L

inearity(b

10%

and 90ο/

etween

οpoints)

Circuit

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p

it

-7.5

k

pea

offset

least

V

5V

V

signal

.

+

α

V

Ω

.

50

SNB130000-up

S

N

below

d

SN

B130000-up

N

below-Β

S

At

least+and-15V

plus

offset

SNB130000-up:At

:+or

Β

130000:+or-

+or-5

:

130000:+or-2.5

.

least+and

-6Vpeaksignalplus
SNb

elowΒ130000:At
and-5V
offset

+2.5V

peaksignalplus

.

square

waveinto

600Ωload.
Same

as

freque

ncyatoutputcon-

nector

.

1

With

100

after
Within2

excludingfirst
switch

ο/οfrom0.001Hzto

in

kHzexcludingfirst200ns

switch

ο/ο

points

from

.

100kHz

to1MHz,

200nsafter

points

.

2-2

REV

C,MAR

197

9

Table

2-1

(con

SpecificationandPerformance

t)

heck-FG501

C

R

am

p Duration

neWave

Si

Square

Outputs

R

isetime

Aberrations

P

ulse

E

xternal

Input

B

urstLength

C

h

aracteristics

Distortio

W

ave

andPulse

Duration

GateInp

Signal

ut

.

erating

+15V.

selected

gating

Information

dportion of

alid

from

Consider-

+2

V,but

Output

h gateinput.

output

pulsewidth

bursts

.

P

erformance

n

1

ο/ο

or less

0.5ο

/

1ο/ο

or less

2

.5%οor less

at105

100nsor
5%οor

put

nal

50

from0.001Hzto

οorlessfrom

from

MUL

less

less

measured

p

litudeat10Vintoexter-

am

Ω

load

1Hzto20

kHzto

20

100kHzto1MHz

from

TIPLIERsetting

.

.

Req

ρ-ρ

ement

ui

r

1

kHz.

100kHz

.

without-

z

.

H

.

Supplemental

=

1

(seeOp

2f

ations)

Appliestocalibrate
dial

only

+10°C

10%to90%

(seeOp

=

1

2f

ations)

S

quare

n

ottoexceed

are sync

Determinedby

frequencyand

eratingConsider-

.

(1to10).V

to

+50°C

.

.

waveatleast

h

ronizedwit

Ph

asing

Input

Impedance

E

xternalVoltage-

Controlle

(VCF)

Input

Output

Range

Slew

d Freq

F

R

ate

requency

uency

least

At

input

.Negative-goi
decreases
goingin

=10Χ

f_

Χ

MUL

fm

in

1000:1wit

freque

creases

MUL

TIPLIERsetting

h 10

n

g

ncy

frequency

TIPLIERsetting,

100

V VCF

voltage

ositive-

;

p

ntinuously

Co

to

+90°

triangle

.

-=1kΩ

.

-0.5V/μs.

variable

referredto0°sine

startpoints

from

.

-90@

or

REV

C,MAR1979

2-3

SpecificationandPerformance

Check-FG

ENVIRONMENTALCHAR

501

Table

2-2

ACT

ER

ISTICS

Temperature

Operating
Storage

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MAR

1979

voltmetertot

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fully

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