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7 tIctro nbc
COMMITTED TO EXCELLEN CE
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF T H IS MANUAL
F G 502
FUNCTION
G ENER ATO R
I N ST RU CTIO N M ANU AL
Tek tronix, Inc .
. . Box 500
B eaverto n, Oregon
97077 Serial N umber
First Printing OCT 1973
070-1706-01 Revised 1981
TABLE OF CONTENTS
Page
LIST OF ILLUSTRATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii
Section 1 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Section 2 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
WARNING
THE FOLLOWING SERVICE INSTRUCTIONS ARE FOR USE BYQUALIFIED
PERSONNEL ONLY. TO AVOID PERSONAL INJURY, DO NOT PERFORM
ANY SERVICING OTHER THAN THAT CONTAINED IN OPERATING
INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.
Section 3 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Section 4 Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Performance Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Section s Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Section 6 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Section 7 Replaceable Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Section 8 Diagrams and Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Section 9 Replaceable Mechanical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
L IST O F ILLUSTRATIONS
Fig.
No. Page
FG502 FUNCTION GENERATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . . . . vi
2-1 F G 502 I nstallatio n and removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Controls and Con nectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2
2-3 Impeda n ce matching n etwor k t hat provides minimum attenuation . . . . . . . . . . . . . . . 2-4
2-4 Ou tput waveforms availa ble from the FG 502 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-5 G raph showi ng range of V CF frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Swept frequency range with 10 V signals applied to VC F 1 connector . . . . . . . . . . . 2-6
2-6
2-7 Phase relationships betwee n OUT PUT waveforms an d TR IG OUT waveform . . . . . . . 2-7
2-8 Analyzi ng circuit or system response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
. . . . 2-8
2-9 To ne burst generatio n o r stepped frequency multiplicatio n . . . . . . . . . . . . . . .
Semico ndu cto r device lead con figuratio n found in the TM 500 family . . . . . . . . . . . . 5-5
5-1
FG 502
O PERATO RS SA FE TY S UMM A R Y
Terms In T h is Manual pr otective ground co nn ection by way of the grounding
co nductor i n t he p ower cord is esse ntial for safe opera-
CA UTION statements ide ntify co nd itio ns or practices that tion .
co uld result i n da mage to the equi pme nt or ot her property .
WARN I NG statements ide ntify conditio ns or pr actices
that could result in pe rsonal injury or loss of life . Da nger Arisi ng F rom Loss of Ground
Up o n loss of the protective-gro und co nn ection, all
Terms As M arked on Equipme nt accessible co nd uctive parts (i ncl udi n g kno bs and con-
CA UTION i nd icates pe rso nal injury hazar d not im- trols that may appear to b e insulati ng) can re nd er an
mediately accessible as one reads t he marki ng, or electric shoc k.
hazar d to p ro perty i ncl ud in g the eq ui p me nt itself .
DA NG ER i nd icates personal i nj ury hazard imme diately Use the Prope r Power Cord
accessi ble as one reads the mark i ng.
U se only the power co rd and co nn ector specified for your
product.
Symbols As M arked on E quipment U se only power cord t hat is i n good conditio n.
DA NG ER - H ig h voltage.
Protective ground (earth) termi n al . U se the Proper Fuse
ATTENTION - r efer to m an ual . To avoi d fire h azard, use only the fuse of correct ty pe,
voltage rati ng and current rati ng as specified i n t he p arts
list fo r your pro du ct .
P ower Source
Refer fuse replaceme nt to qu alified service perso nnel .
This p roduct is i n tended to operate from p ower so urce
t hat will n ot apply more than 250 volts rms betwee n t he
supply co nductors or b etween eit her su pp ly co nductor Do N ot O perate in Explosive Atmosp heres
and grou nd . protective ground co nn ectio n byway of the
grounding co nductor i n t h e power co rd is esse ntial for To avoi d explosion, do n ot operate this produ ct i n an
safe operatio n. explosive at mos phere u nless it has bee n s pecifically
certified for such o peratio n.
Grounding the Product
Do N ot Operate Plug-in Un it W it hout Covers
This p ro duct is grounded t h roug h t he groundi ng co nd uc-
tor of the power cord. To avoi d electrical shoc k, plug t he To avoid perso nal injury, do n ot operate t his product
power cord into p roperly wi red receptacle before without cove rs or p anels installed. Do n ot apply powe r to
co nn ecti ng to the p ro duct i np ut or output termi nals. t he plug-i n via p lug-in extend er .
F G 502
SE RV IC E SA FE TY S UMM A RY
FO R Q UA L I FI ED S ERVIC E PERSO NNEL ONLY
Refer also to th e preceding Operators Safety Summary.
Do Not Service Alone Disconnect power befor e r emovi ng protective pa nels,
soldering, or re placi ng co mponents .
Do not perform inte rn al service or adj ustment of this
product unless a not her perso n capable of re nd eri ng fi rst
ai d a nd resuscitation is prese nt. Power Source
This product is in te nded to operate from power source
that will n ot app ly mo re than 250 volts rms between t h e
U se Care When Servicing Wit h Power On
su pp ly co nductors or between either s upply co nductor
Da nge rous voltages exist at several poi nts in t h is product. and ground. protective ground co nnecti on by fthe
To avoi d personal inj ury, do not to uch exposed conn ec- grounding co nductor in t h e p ower co rd is esse ntial fo r
t i ons and compon e n ts while p ower is on . safe operatio n.
R
'
,\\
1706-01
F G 502 FUN CTIO N G ENER ATOR
REV 1980
Section 1- FG 502
SPECIFICATION
INTRODUCTION
The FG 502 Functi on Generator is desig ned to operate repetition rates or tone bursts . The square wave trigger
in TM 500 seri es p ower modu le. It generates low output can be used as source fo r TT L log i c, or to
d istortion si n e, sq uare, tri angle, positive an d negative syn c hronize an exte rn al device such as an osci lloscope or
pulse, and ramp waveform s from 0.1 Hz to 11 MHz. A counter.
squ are wave trigger is available at the front panel. V ari able
DC offset is also provided.
The electr i cal characteristics in t his specificati on a re
vali d with t he following co nd itio ns:
voltage-controlled frequ ency (VCF) i np ut co ntrols
1 . The instrument must h ave been a djusted at an amb ient
the output frequ ency from an exte rn al voltage so urce. The
temperat ure betwee n +200 C and +300 C.
output frequ ency can b e swept above or below the
selected frequency to maximum of 1000:1 de pend i ng on
2. The inst rument must be -condensi ng envi ron-
t he polarity and amp l itud e of t h e VCF input and t he ment whoseli mits are d escri bed under En vironme ntal.
selected output frequ e n cy.
3. Allow twenty mi nutes warm-up time for operatio n to
specified accuracy ; sixty mi nutes after exposure to or
An external gate input allows t he generator to operate
storage In h ig h humidity (cond ensi ng) e n viron me nt.
for the d uratio n of an exte rn ally appl i e d gati ng signal. This
mode p rovides either single cycle output, o r t rai n of
preselected waveforms, d epending on t he gati ng signal
"N% widt h an d the ge nerator frequ ency setting. Any co nd itio ns that are unique to particular
characteristic are expressly stated as part of t hat
characteristic.
The variety of swept and mo du lated signals availa ble
from the FG 502 make It es pecially useful for such
ap plications as testing servo-system or amplifier The electrical and envi ronmental performance l imits
response, d istortion, and stability. It can be used for FM together with t hei rrelated vali dation proce dures comprise
ge neratio n, f requency multi plicatio n, or as variable beat- complete statement of t h e electr i cal and e nvironm ental
frequency oscillator. It can also be used to ge nerate performance of calibrated Instrument.
Ta ble 1-1
ELECTRICAL CHARACTER ISTICS
Characteristics Performance R equirements Supplemental Information
Frequency R ange 0.1 t 11 MHz.
Frequency Resolution 1 part in 10' of full scale setting
usi ng FREQUENCY VERN I ER co ntrol .
Frequ ency Stability < 0.1% for 1 hou r, < 0.5% for 24 h ours .
Dial must be on calibrated portion and
ambient temperat ure must be 25◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo