Tektronix FG501A User manual

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le
k tro
n nc
Te
k tronix,
Inc .
Ρ . Ο . Box 500
B ea verton, Oregon

97077

Serial
N u m ber
CO
M M ITT E D TO E X C ELLEN CE
PLE AS E C HE C K F O R C H A
N
G
E I N F O RM ATIO N
AT THE RE
A R
O
F T H IS MA NU A L .
FG 501
Α
2 MHz
FUNCTION
GENERATOR
I N ST RU
CTIO N M A NU A L
F irst P rinting AU G 1980
ο 7 ο -2957- οο

R evise d S EP 1981

Copy r ig h t ®
1980 Tektronix, Inc . All r ig h ts r ese
r
ve d .
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h
is pub
licatio n m ay n ot be reproduced in any
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rm wit h o u t t h e w r itte nperm issio n of Te k tr on ix, Inc .
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iaries a r e cove r e d
by U .S . and fo r eign paten ts and/or
p e nd i n gp ate n ts .
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EK
TR O N IX, ΤΕΚ , SCO PE-M O B I LE, and
iste r ed tr a d ema rk s of Te k tro n ix, Inc .
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P ι i n ted i n U .S .A . S p ecificatio nand pr
ice c han ge p rivileges
a r e r ese r ved .
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© 1980
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β se
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ve le dr
oit d e m o d ifier
ca r act έ r isti qu es et pr ix cla n s le ca dr e d e d 6velo ppe
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logi
qu es .
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p yrig h t ©
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Tek
tr
on
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Inc .
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ic
h
t weite
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we rd e n .
Pr o duk te νοη Tek tr on ix, Inc . und sei nen Toc h te r gesellsc h afte n
si
nd durch
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und
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d er sch web e nd e
P aten te a bged ec k t .
TE KTR O N IX, ΤΕΚ , SCO PE-M O B I LE and

si nd gesc
h
Utzte
W a r en zeic hen νοη Tek tro n ix, Inc .
Ge dr uc k t i n U .S .A . S p ezifi k atio n s- und P reis ti nd e run ge n
b lei b en vo rb eh alte n .
C
1980 !F- ΚΓκ # V Ιτ 4 τ ~
T EK T RON IX,
ΤΕΚ ,
SCO
PE-M OB I LE,
ι t
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Ά h ~# ιη $~~

TA
BLE O F CO
N T EN
TS
P age
L IST O F I
LLU ST R ATIO NS

............ ......
IV
LIST
O F TA BLE S ..... ..................
. .
ν
O PER ATO R SA FE TY S
UMM A RY .............
. vi
S ERV ICI N G SA FE
TY S UMM A RY ......
........ vii
Sectio
n 1 S PE CI F ICATIO N ............... 1-1
I n tr o du ctio n ... . .... ...........
1-1
I n
st
ru me n t Desc r i p tio n . . . . . . .....
1-1
Accessories ...........
. . . .....
1-1
P erfo r ma
nce Co nd itio ns . .........

1-1
E lect r ical C h aracte r istics . .
........

1-2
M iscellaneous C
h
a
r acte r istics . . . ...

1-4
En viro n me n tal C
h a r acte r istics . .....
1-4
Ph ysical C
ha r acte r istics ..........
1-5
Section 2 O PER
ATI N G I N STRU CTIO NS ......
2-1
EN G
L
IS
H VER SIO N
I
n tr o
d uctio n ... .. . . . ...........
2-1
I n stallatio na nd R e m oval ...
. . ..... 2-1
Re p ac k agi n gF o r
S h ipme n t . .... ... 2-1
Cont
r ols a nd Co nn ecto r s .........
2-2
Fr eq ue ncy Co n t r ol
A nd Fu nctio n
Selectio n ... ....
. ...........
2-3
T r igge r A nd Gate
Co n t r ols ......
2-3
O u t pu
t Co n t r ols ...........
...
2-3
O p
e r ati ng Co n si d e r atio
ns
.........
2-4
Out pu t Co n
nectio ns ...........
2-4
Risetime an d F alltime ..........
2-4
Impe da nce M atch
i n g .......... 2-4
F i r st Time O p
e r atio n ...... ..... 2-4
Ope r ating M odes
. . . . . ........ . . 2-5
Fr ee-
Runn i ng O u tput . . . . . .... .
2-5
Triggered O r Gate d (
Bur st)
O pe r atio n ..................
2-5
SECTION
2 O PER ATI NG
I N ST RU CTIO NS (co n t)
Voltage Co n tr olle
d F re qu en cy (V C F)
O pe r atio n .......... .
. . .....
2-5
Trigger O u
t pu t
............ ...
2-6
B asic
Waveform Capa b
ilities . ..... .

2-6
A p
plicatio ns
............ .......

2-9
Res po n se A n alysis
. ........ ...

2-9
To n e- B u
r st Ge n e r atio n ....... . .
2-9
FREN CH VER SIO
N
F G 501 Α
Page
CH A P IT
RE
2
INST RU CTIONS D'UTI L
ISATIO N
I n tr o du ctio n . . .........
. . .
2-1
I n stallatio n et ι et
r ait

..... ...

2-1
I n st r uctio n s d e
r 6e mb allage p o ur
exp έ d itio n .........
. . ..... 2-1
Comma nd es et b o
rn es

..
. . . .....

2-2
Selectio nde Is f
r d qu ence et de Is
fo n ctio n ................
2-3
Comman d
es d e dέ cle n ch ement et
d e validatio
n

.......... ....

2-3
Commandes de
sortie

.... ....

2-3
Instr u ctio n s d ' u
tilisatio n

... .....

2-4
Con n exio n s d e
sortie

. . . .....

24
Temps de mont
έe et de d esce n te . .

2-4
Ada p tatio
n d 'imp έdance

. . . . . .

2-4
Pr
emi6
r e mise e n se r vice

..
. . . .

2-4
Modes d
'utilisatio n

....... .....

2-5
So r tie
............. .... .
2-5
Fo n ctio n
d6clenc h e m ent ου p orte
d e vali d atio n
(salve) ..........

2-5
Fo n ctio n nement
an cont r 6 le de
f r έ qu ence pa
r te n sio n (V C F) . . . .

2-5
Sortie de
d6cle n ch eme n t

. . ... .

2-6
Ca r act d risti
qu es d es fo rm es d 'o nd es d
e
b ase
......... . . . . . .. .
..... 2-6
A pp licatio n s . . . . . ........... 2-9
A n alyse d e r έ po n se

..........

2-9
G dnέ r atio n de salves de
sig na ux ου
m u lti p licatio n de la
fr6
qu
ence pa r
paliers ..................
2-9

F G 501
Α
K a p itel 2
TABLE 0 F
CO
N
T EN TS (cont)
G ERM A N VER SIO N
P age
P age
J A P A
NE S E VER SIO N
BE
DI ENUN GSA NLE IT UN G
De u tsc h e B esc hrei b u n g
E i n f
0h
r
u
ng
. . . ..... . ...... . . . 2-1
M 2 ~
IN# 0 3Σ 13,q .
............ .... . . ....... . . ....
. . .......... . 2
- Ι
Inbetriebnah me ..
. . . . . . . ...... 2-1
...... ......... . . . . . ............ ....... . . ....
2
V er p
ac kun gd es Ger 9 tes . . . . . ... 2-1
W1-,t43 .~
U t{St i )
ιά - f l .* ι A .....
. . .... . . .....
2 - ι
B edien un gseleme nte u nd
WWYA ..
. . ............ .... . . ....... . . ....... . . . . 2
- ι
Ansc h l
Ci
sse ...... . . . . . . . ...... .
2-2
αί F εα
-
A ,
tα4
, η !~l .
. . . .......... . . . ...... .2
-2
F re q ue n zeinsteller un d
f -9 i 9ft α > F
εα
-A
ι
8 .t τ F
Fu n k tionswa h lsc h alter
......... 2-3
7 -1 i `! ί a i
.......... .... ......... . . ..... 2 - 3
T r igger- un d
Gate - E lemente ... . . 2-3
F 1 ) ;Y43 .t t λ fT- F " α i F εα -A .....
.
2 - 3
B e dien un gselemente des
tti 17 ..
. . .......... ...... ......... . . ... ............. 2 - 3
Ausgangs . . . . ..... . ... . . . . . . 2-3
#
o
1
*
L ~ . .
- D
ι
N
Ζ
..... . . .... . . ......... ....... .......... 2 _ 4
~Hl 17
α
4 , - .7 :5t .... ...... ............ .... . . ........
2-4
B edien ungs h inweise
. . . . ...... . . .
2-4
1
-E 1) 43 .t
U U
AT
ι
)
t Ρ
~9
.
....... . . . . . ........ 2 _ 4
Ausga n gsansc h l
O sse .......... 2-4
Τ
%
σ
"
.... . . .........
....... . . . . 2 - 4
Anstiegs- u n d Abfallzeiten ...... 2-4
**of .IF .
....... ...... . . .... . . ............. ... . . . . 2 _ 4
Im p ed anzanp assung . ...... . . . .
2-4 o
1
, F
ξ
-
F . . . . .... . .
........ ...... . . ......... . . . . . . . 2 _ ς
Inbetriebnah me .............. . 2-4
7 f)
--5>W417
..
......... . . ....
. . ......... .....
2 - ς
B et r ie bsarten . . . . ............ . . 2-5
F 1)
fi #3 .t
Z λ
fr-
I- (/ ~ -,7,
F)
Fr eilaufe
nd er Ausgang . . . . . . . . . 2-5
ξ-
F l
β 1~
. . . . ... .
. . ........ ...... . . ......... .
2 - ς
Getriggerter oder
torgesteuerter g}' β F .9 5 &ft αί F ια - Ιι ( VC F ) Oft ...... 2
-
ς
Betrieb . . . . . . ...... . ........
2-5
F
1
)13 til 17 ....... ........ ........ . . .... . . . .......
2_6
F re q ue n zmo d ulatio n ( VC F - B et r ieb) 2-5 ~~
ά
~t αί 9 if ίιΨ ~17 ..... . . .... . . ...... .......... . . . .
2 - 6
T r iggera u sga n g . . . ......... . . .
2-6
...... ...... . . ....... . . ....
. . . ......... . . .... . . . 2 - g
Gr u ndsig n
alformen .............. 2-6
f=] ί g V 441t bt FA
"......
.......... ...... . . ........
2 -
9
Anwe ndun gen . . . . . ...... . . . . . . .
2-9
F
-i "
/~-
;K F 091 : .
.... . . ......... ..... 2 - g
A nalyse des I Jb ertragu n gs-
ve rh alte n s ........ . ..........
2-9
To n fre qu e n z b urst- Ge n erator . .
... 2-9

Section 3
Section 4
REV Α DE C 1980
TA BLE 0 F CO N T EN TS (cont)
F G 501 Α
P age P age
T HE O RY O F O PER ATIO N ........ 3-1 Sectio n 5 M AI NT EN ANC E
. . . .............
5-1
Int r oductio n .................. . 3-1 Ge n eral M ai n te n an ce Info rm atio n ... 5-1
L oo p ...................... . . 3-1
Static Se
n sitive
Compone
n
ts ..... 5-1
Fr eq uency Co n t r ol A nd Su mmi n g Cleaning
...................
5-1
Am p lifier . ........... . .... . . 3-1
O b tai n i n g R e p laceme n t P arts .... 5-2
C ur re n t So ur ces An d Switc h ..... 3-1
Sol d e r i n g Tec hn i q ues .......... 5-2
Timi n g
Ca
p acito r
s
A nd
Ca p acita
nce
Se m ico ndu ctors .............. 5-2
Mu lti p lie r .... ... . . .......... 3-1
I n te r conn ecti ng P i ns ........... 5-2
Tria n gle Bu ffer . . . ... ......... 3-1
Coaxial Ca b les ............... 5-2
L evel Com p a r ato r s
. . . .........
3-2
Mu lti p i n Co nn ectors ........... 5-3
R efere n ce V oltages
............
3-2
Cam Switc hes ............... 5-3
L oo p Logic ................. 3-2
Pu s hb utto n Switc h es .......... 5-4
Trigger Ge ne r ato r ............ 3-2
F ro n t P anel L atc h R emoval . ..... 5-4
Sq u arewave Ge
n
e r ator ......... 3-2
R ea r I n terface Information ........ 5-4
Ph
aseCla
mp T hresh
ol
d Detecto r . . 3-2
F
unctions Availa b le At
R
ear
Cur r ent Am p lifier ............. 3-3
Co nn ector .................. 5-4
T r ig/Gate Am p a nd Si neS h ape r .... 3-3
Trig/Gate Am p And L ogic ....... 3-3
Si n e S
h
aper ................. 3-3
Tra n sco ndu cta n ce Am p lifier . . . 3-3
S h aper ................. . 3-3
Sectio n β
O
P
TIO N S
................ .... 6-1
Outp u t Bu ffer ............ . . 3-3
Out p ut Am p lifie r s A nd Atte n uators . . 3-4
P ower S up ply ............. . . . . 3-4
+20 V S upp ly ........... ....... 3-4 Sectio
n7 REPL
AC
E A BLEELE
CT R ICAL P A
R
TS
+15 V Su pply ........... ....... 3-4
+5 V Su p ply .... . ... ... ....... 3-4
-20 V Su pply . . ....... . ........ 3-4
-15 V Su pp ly .................. 3-4 Sectio
n8 DIAG R A M SAND I LLU ST R ATIO N S
A dju
stment L ocatio ns
CA L I BR ATIO N ................. 4-1
Block Diagram
P erfo r ma n ce C h ec k ............. 4-1
Sc he m atic Diag r ams
I n tro du ctio n ............... . . 4-1
P a r ts Location Gr i d s a nd R eference
Test Equ ip m e n t Re qu i r ed . . . .... 4-1
C h a r ts
A dju stme n t Pr oce dur e .... . . ..... 4-8
Intro du ctio n ... . .... . ........ 4-8
Services Availa b le ............ 4-8
R ecalibration I n
te
r
val ..........
4-8
Sectio n 9 REPL AC
E A BLE ME C HAN ICA LP AR TS
Test Eq ui p ment R e q ui r ed ....... 4-8
Ex p loded V iew
P reparation ................. 4-8
Accesso r ies

F G 501 Α
ΊΥ
L IST OF
ILLUSTRATIONS
REV ΑD EC 1980
Fig .
No .
P age
F ig .
No .
P age
2-1
INSTALLATION
A ND REMOVAL ......
2-1 4-5
TEST SETUP FOR
DIAL CAL A ND L OOP
2-2 CONTROLS
AND CONNECTORS
.
....
2-3
D ELAY
ADJUSTMENT .............
4-14
2-3
SWEPT FREQUENCY
R ANGE (VCF) ...
2-6
5-1
COAXIAL END LEAD
CONNECTOR
ASSEMBLY
5-3
2-4 B
ASIC FUNCTIONS
(WAVEFORMS)
. . . 2-7
................... ..
5-2
ORIENTATION A
ND DISASSEMBLY OF
2-5 R AMPS
AND PULSES .............
2-7
MULTIPIN
CONNECTORS ..........
5-3
2-6 PHASE
RELATIONSHIPS
(OUTPUT AND
5-3 E
XTENSION S
HAFT AND
PUSHBUTTON
T RIG)
. . . ...................
... 2-7
REMOVAL
....... . ..... .
........ 5-4
2-7
TRIGGER SIGNAL
A MPLITUDE
5-4
REAR I NTERFACE
CONNECTOR
REQUIREMENTS
.................
2-7
ASSIGNMENTS . .........
... . . ...
5-5
2-8 GATED
OPERATION
(WAVEFORMS) . . 2-8
2-9 TRIGGERED
OPERATION
(WAVEFORMS) .................
. 2-8
ΝΟΤΕ
2-10
PHASE CONTROL
(WAVEFORMS) ....
2-8
2-11 ANALYZING
CIRCUIT OR SYSTEM
Th
e followi ng illustrations
a p pea r in t he Diag
r ams
RESPONSE
................. ....
2-9
and Illustrations fol
d out section .
2-12
TONE BURST
GENERATION ........
2-10
4-1 TESTSETUPFORDIAL
ALIGNMENT
AND
OFFSET
ADJUSTMENT . ... ........
4-9
8-1 ADJUSTMENT
AND TEST POINT
L OCATIONS
AUXILIARY B
OARD ( Α 12)
4-2 TEST
SETUP FOR SINE
DISTORTION
8-2
ADJUSTMENT AND TEST
POINT
ADJUSTMENT ...................
4-11
L OCATIONS MAIN
B OARD ( Α 10)
4-3 TEST SETUP
FOR O FFSET AND
8-3
BLOCK DIAGRAM
SINE/SQUARE
A MPLITUDE
8-4
ADJUSTMENT ...............
....
4-12
and
P
ARTS L OCATION G
RIDS
4-4
TEST SETUP
FOR SQUAREWAVE
8-5
COMP/RISE
A ND F ALLTIME
ADJUSTMENT
............
. . ..... 4-13

L IST O F
TA BLE S
NO ΤΕ
Th e following tables a pp ea r in
t
h
e
Diag
r ams a nd
Illust r atio ns fol d out section
.
8-1
t h r u CO
MP O NEN T REFEREN C ECH A R TS
8-5
Table
No .
P age
1-1 ELE CT RICA L C HA R ACT ER ISTICS . ... 1-2
1-2 M ISC ELL A NE OU S ................
1-4
1-3 ENV I R O NMEN TA L ................
1-4
1-4 PH YSICA L C HA R ACT ER ISTICS ...... 1-5
4-1 T E ST E Q U I PMEN T RE Q U I RE D .......
4-1
5-1 REL ATI VE SU SC EP TI B I L ITY TO
STATIC
DISC H A R AG E DA M AG E ............
5-1

F
G 501 Α
T he gene r al safety i n formatio n i n t
h
is p
art of t h e summary
is for both ope r ati ng and
servici n g perso nn el . S p ecific
warnings and cau tio n s will be found t h roug
h
out
t h e
ma n ual w here t hey apply, b ut
may n ot a pp ear in t h is
summary .
In T h is Manual
CA U TIO N stateme n ts i d entify co
nd itions or p racticest h at
could res
u lt i n damagetot he equi p me n t or ot h er p rope r ty
.
W A RN I NG statements i d entify co
nd itions or practices
t h at cou l d result i n personal
i nj ury or loss of life .
As M ar k ed on E qui p ment
CA U TIO N i n dicates αperso n al i nj ury h
azar d not im-
me d iately accessi b le as
one reads t he mar k i n g, or α
hazard to p ro
p erty incl ud i n g t he eq uipment itself .
DA NG ER i nd icates α person
al in ju ry h azar d immediately
accessible as o ne reads
t he mar k ing .
In T h is Manual
As
M
a
rk edon E quipme n t
Power
Source
T h is pro d uct is inten de d to o p erate from α p
ower mo d ule
con n ected to α power so
urce t h at will not apply morethan
O
PER ATO
R SA FE TY S UMM
A R Y
T ERM S
SY MB O
L
S
T h is symbol i nd icates w here a p p
licable
cautio n ary or ot h er informatio n is to
be
fou nd .
DA N G ER - H ig h
voltage .
P rotective ground (eart h ) terminal .
ATTENTION
- refer to manual .
250
volts rms between t he supply conductors or
betwee n
eit h er supply cond u ctor an d
ground . Α p rotective ground
connectio n by way
of t he grou nd i n g co ndu ctor i n t h e
power cord
is essen tial for safe op eration
.
G r ou n ding t he P roduct
T h is prod u ct is grou n ded
t hroug h t h e grou nd i n g co n duc-
tor of t h e p owe r mo d
ule p ower cord . To avoid
electrical
shock
, p lug t h e p ower cord into αpro p
erly wired rece p -
tacle before connecti n g to
t h e p ro d uct i nput or outp ut
te r mi n als .
Α p rotective groundco n nectio n by way of
t he
groundin
g conductor in t he power module p
ower cor d is
essen
tial for safe o p eration .
Da n ger Arising
F rom L oss of Ground
U po n loss of
t h e protective-ground co nn ectio
n ,
all
accessible cond u ctive parts (i n clu
d i n g k nobs and con -
trols t h at may ap pear
to be i n sulating) ca n re nd e r an
electric s
hock .
U se t he P ro p er Fu se
To avoid
fire h azard, use only t h e fuse of co
r rect type,
voltage rating a nd cu r re n t rati n g as
specified in t he p arts
list for your pro d uct .
R efer fuse re p
laceme n t to q u alified service perso
nn el .
Do N ot Operate
in E xp losive Atmosp h eres
To avoid explosion, d o n ot o p erate
t h
is p ro
d uct i n an
exp losive atmos phere u
nless it has bee n s p ecifically
certified for
such o p e r atio n .
Do
N
ot
O pe r ate W it h out Covers
To avoid p erson al in j ury, d o
not operate t h is p ro du ct
wit hout covers or p
a n els installed . Do n ot apply powerto
t
h
e
plug-i n via αp lug-in exte nder .

Do Not Serv
i ce Alone
S
ERV ICI N G SA
FE TY S U M M
A RY
F O R Q U
A L I F I E D S ERV IC
E PER SO NNEL ONLY
R efe r also to t he preceding Ope
r ato r s Safety
Summary .
Do
n
ot
perfo r m i n ter n al service or ad
ju stme n t of t h is
pr od u ct u n less an ot h er p erson
capa b le of r e nd e r i n g first
ai d a nd res u scitatio n is pr
ese n t .
U
se Ca r e Wh en Servici ng
Wit hP ower On
Dangero u s voltages
may exist at several p oints
i n t h is
pr oduct . To avoi
d personal i njur y, do not touc
h expose d
con
n ectio ns a nd com p one n ts w h ile p
ower is on .
P owe r Sou r ce
F
G
501 Α
Disconnect power
before r emoving p rotective
p an els,
sol de r i n g, or re
p lacing co mp o n en ts .
Th is p r od u ct is i n tende
d to o p erate i n α power mo
du le
co nnecte
d
to
αp owerso ur ce t h at
will n
ot apply morethan
250 volts r ms b etwee n t h e supply
cond uctors o r betwee n
eit he r s u pp ly con ductor a
nd g r ound . Α pr otective grou
nd
con n ectio
n b y
way
of t he grou nd i n g co nd ucto
r in t he
power co rd is
essential for safe op eration .

F G 501 Α 2 MHz FU N CTIO N G ENER ATO
R

I NT R OD U CTIO
N
T h is
sectio n of t h e ma n ual contai
ns α gene r al d
escrip-
tio n of
t h eF G 501 Α and com
p lete electrical, e
n vi r o n me n -
tal, an d ph ysical sp
ecifications . Sta nd ar
d accessories are
also liste d . I n st
r ume n t optio n i nformation
is located i n t
he
bac k of t h is
ma n ual in α sepa r ate
sectio n .
IN ST RUMEN
TD E SC R I PTIO
N
Th e F G
501 Α Fun ctio n Ge ne
r
ator
provi d es low d istor-
tio
n si n e, s q ua r e, t r ia n gle, r am
p , a n d pu lse waveforms
ove
r t he frequen cy r an ge
0 .002 H z to 2 MH z
i n eig h t
decade ste ps . Dc offset u
pto ±13 V is available . W
aveform
triggeri ng an d gati
n g fu n ctio n s, i na dd itio
n to bei n g slope
(+ or -) selecta
b le, are p r ovi d e d
wit h varia b le ph ase
control ca p
able of up to ±90° ph ase sh
ift . T h e sym m et r y
of t
he
ou
tput waveform may
also be varie d fr om 5 to
95% .
Ste p atte nuato r sp
rovide up to 60 dB of
atte nu ation i n
20 dB steps .
Α va r ia b le am p litu d
e cont r ol provi d es an
a dd
itio n al 20 dB atten u atio
n .
Α voltage-controlled
f r eq ue n cy (V C F)
i nput is p rovi d ed
to co n t r ol t he out
p ut fr eq ue n cy from an
exter n al voltage
so ur ce .
T he o u t p ut f r eq u e ncy can
be swe p t above a nd
b elow t he selecte d f r eq ue
n
cy
to α maximum of
1000 :1
d ep en d i n g on
t hepola r ity a nd amplit u de of
t h e VC F in p ut
sig n al an
d t h e selecte d ou t p ut
f r eq ue n cy .
S PE CI
F
ICATIO N
ACC E SSO R
I
ES
Sectio n 1- F G
501 Α
T he only
accessory sh i pped
wit h t he F G 501 Α is
t he
I n
st
ru ctio n Manual .
PERF O RM A
NC E CO N DITIO
N
S
T he
electrical cha r acte r istics
are valid wit h t h e
follow-
i n g co
n ditio ns :
1 . T he inst r ume
n
t
must h ave b ee n a
dju ste d at an
a mb ient tem pe r at
ur e betwee n +20°C
a n d +30°C a nd
op erating
at an a m bient tem p
e r at ur e b etwee n 0 ° C
a nd
+50° C .
2 . T he i n str u
me n t must be i nα non-condensing
e n-
vironme n t
w h ose limits a r e d esc
r i b ed u nd e r Environmen-
tal .
3 .
Allow twenty minutes warm-up
timef or operation to
sp
ecifie d accuracy ; sixty
mi n utes after ex p os u re
to or
sto r age i n h ig
h humidity (co nd en si n g) en
viro n ment .
Items listed i n t h e P erfo r mance
R e qu ireme n ts colum
n
of t he
Electrical C h a r acteristics
are verifie d by completing
t
he P e r for m an ce C heck
in t h is ma nu al . Items
liste d in t he
S upp leme n tal
Info r matio n col u m n may
n ot b e verifie d in
t h is m a n ual
; t hey are eit he r ex p la
n atory n otes o r perfor-
ma
nce ch aracteristics fo r w h ic
h
no
limits are specified .

Spec i fi catio n - F G 501 Α
Ta b le 1-1
ELE
CT
R ICA L
C
H
A
R
ACT ER ISTICS
C
h
a r acteristics P erfo r ma nce R eq u i r eme n ts Supp le m ental I n fo r matio n
F re qu e ncy P rovi d ed i n eig h t d eca de ste ps
plus
varia b le, wit h ove r la p on all
R an ge
r anges .
Si ne-wave, s q uare-wave, .002 Hz to 2 MHz cali b rate d portio n Calib r ated p ortio n of d ial exten d s
a nd tria n gle
of
d ial .
from 20 to 2 . P ortio n of dial f r om
2to
.2 is uncalib
r
ate d
.0002 Hz to .002 Hz un cali b rate d
p ortio n of d ial .
R a m p an d P ulse .002 H z to 200 kH z f5°/ ο cali b rate d M easu re d at 50 ο/ο duty cycle .
p ortio n of dial .
.0002 Hz to .002 Hz u
n
calibrated
p ortion of d ial .
V a r iable Symmetry
Duty Cycle
<5 ο
/
ο to >95 ο/ο
.
Activatio n of Symmetry cont r ol
d ivides output
f
r equency b y -10 .
O utpu t Amplitude At least 30 V Ρ - Ρ into an op en Offset con tr ol off .
circuit, at least
15
Vρ - ρ i n
to
50 Ω . ( F ront p a n el only .)
Out p ut Im p eda nce F
ro n
t p
an el τ ο = 50
Ω
±10 ο / ο .
ΑΤΤΕΝ i n 0 dB p ositio n .
R ear inte r face
zo
= 600 Ω -10 ο/ο .
Offset R an ge
At least ±13
V
into open ci r c u it,
at least ±6 .5 V i nto 50 Ω .
M aximum p eak sig n al plus offset
cann ot exceed
±15
V i n to an
ope n circuit, or ±7 .5 i n
to
50 Ω .
( F ront panel only .) Offset reduced
by attenuators .
F re q ue ncy R esolution 1 p art i n 10 ° of f u ll scale wit h
f r e qu e ncy ver n ier control .
Stability ( F re quency)
Time
-<0 .1 ο/ ο for 1 h our,
<,0 .5 ο/ο for 24 h o u rs .
Te m perature W it h i n 2 ο/ο from .2 H zto 2
MHz, and
wit h i n 10 ο/ο from .002 Hz to .2 H z . T h e
FRE Q UEN CY Hz d ial m u st be on t h e
cali b
rated p
ortio
n .
T he i
n strume n t
mustbe i n α tem p erature b etwee n
0° C a nd +50 0 C a nd checked
after α 1 h
our wa
rm
up .
V A R
SY MM
control d isabled .

Table 1-1 (cont)
Specificatio n - F G 501 Α
C h a r acteristics
P erforma nce R eq u ireme n ts Sup p lemental Information
Amplitude F lat n ess M easure d wit
h0
d
B ΑΤΤΕΝ b utton
"IN" and o
u tput d rivi n g 50 Ω loa d .
( F ro n t p anel only .)
Si n ewave ±0 .1 dB 20 Hz to 20 kH z
Ty p ically ± .5 dB .002 H z to 20 H z .
(10 kH z Sinewave R ef)
±0 .5 dB 20 kH z to 1 MHz
±1 d B 1 MHz to 2
MH z
Squarewave
P eak to p eak amplitude wit h in Ty p ically wit h in ± .5 d B .002 H z
(10
kH
z
S q
uarewave R ef) ±0 .5 dB of s q uarewave reference to 20 Hz .
am p litude 20 Hz to 2 MH z .
Tria n gle
P eak to pea k a m plitu de wit h i n Ty p ically wit h in ± .5 d B .002 H z
(10 kH z Tria ngle R ef) ±0 .5 dB of tria ngle wave refer- to 20 Hz .
en ce amplitude 20 Hz to 200 kH z .
W it h in 2 d B 200 kH z to 2 MH z .
Sinewave Distortio n <0 .25 ο/ο 20 Hz to 20 kH z on 10 3 20° to 30°C .
M easure d wit h
range and below
. wit h average res p o nd i ng T HD meter .
M easurement ban dwidt h limite d to
ap proximately 300 kH z
.
<0
.5% ο 20 kH z to 100 kH z . V erifie d at 15 V ρ - ρ i n to 50 Ω load .
Mu st b e on cali b rated portio n of
dial . VA R SY MM control off . Offset
control off .
All h armo n ics at least 30 dB below Trig output drivi ng o p en
circuit .
f u n d ame n tal from 100
kH
z to 2
MH z .
Sq uarewave Output Step ΑΤΤΕΝ i n 0 dB p osition .
R isetime a n dF alltime <25 n s at 15 V ρ - ρ
into 50 Ω .
Aberrations
(p
-
p)
<_3 ο/ο (Fr o n t p a n el
only .)
P ulse Out p ut Step ΑΤΤΕΝ in 0 d B p osition .
R isetime an d F alltime <25
n s at 15 V ρ - ρ i n to 50 Ω .
Aberrations (p - p) <3% ο (Fr o n t p a n el only .)
V C F Input 10 V 1000 :1 P ositive going voltage i n creases
fre q uency .
M aximum Slew R
ate =
0 .5 V / μ s . V C F must n ot exceed
range limits . M aximum input <15 V p k .
E xt Trig/Gate I np ut
Impe d ance =2 k Ω
T h res h ol d L evel +1 V ±20% ο.
M
aximum
i
np ut < 15
V p k .
Trigger Out p ut > +4 V i nto o p e n circuit .
+2 V i nto 50 Ω .
V ariable Ph ase R ange At least ±90° . Si n e an d Tria n gle only .

Sp
ecificatio n - F G 501
Α
C h aracteristics
P ower Co n sum
p tio n
R ecomme
n ded Ad j ustme n t
I n terval
Warm-up Time
20 minutes .
Ta b le 1-1 (con t)
Table 1-2
M ISC
ELL A NE O U S
12 W or less . (plug-i
n only)
1000 h ours or 6
mo n t h s, w h ic h eve r
occurs first .
Table 1-3
ENVIRONMENTAL'
Descri p tio n
C ha r acte r istics
P erfo r ma
n
ce
R equi r ements
Sup p leme n tal I n fo
r matio n
Attenuators
60 dB in 20 dB
steps . >20 d B
add itio n al
attenuation wit h am p litude
control .
Accu r acy
±1 dB .
V e r ified at 20 kH z .
Dial Accu
r acy
W it h i n 3 ο/ ο of full
scale 20 to 2 . 2 to .2
U ncal .
Tria n gle
L inearity
Greater t
han or eq ual to 99°/ ο 20 Hz to
200 kH
z . 97°/ ο 200 kH z to 2 MHz
(cali-
b rate
d ) . M easure d from
10 ο/ο
to
90 ο/ο of waveform .
TimeSymmetry
B
etter t h a n 1 ο / ο 20 Hz to
200 kH z .
5 ο/ο 200 kH z to
2 MH z (cali b rate d ) .
C h aracte
r istics
Descri p tio n
Temperature
M eets M I L - Τ -28800B,
class 5 .
O p erati ng
0° C
to +50° C
Non-operating
-55°C to +75°C
Hu mi d
ity
95 ο/ ο RH, 0°C to
30°C
E xceeds M I L - Τ -28800B,
class 5 .
75% RH to 40 0 C
45°/ ο RH to
50°C
Altitude
E xceeds
M I L - Τ -28800B, class 5 .
Operati ng 4
.6 K m
(15,000 ft)
Non-operating
15 K m (50,000 ft)
V
ibratio n0
.38 mm (0
.015") pea k to p ea k ,
E xceeds M I L -
Τ
-28800B,
class 5,
5Hzto
55 Hz, 75 minutes .
w hen
installed in q ualified
power
mo du les .

α W it h p owe r module .
b
R efe r to TM 500 p owe r mo du le s p ec i ficatio n s .
` W it hou t p owe r mo du le .
F i n is h
N et W eig h t
Overall Dime n sio ns
REV ΑD E C 1980
C h aracte r istics
Ta b le 1-3 (con t)
Table 1-4
PH YSICA L C H A R ACT ER ISTICS
Descri p t i
on
Specification-
F G 501 Α
P lastic/al u minum
lami n ate front pan el . A n o d ized alumin u m ch assis .
1 .88 1 bs ( .85 k g)
H eig h t 5 in
(126mm)
W i d t
h2
.6
i n (67mm)
L
ength 11 .9 i n (303mm)
C h aracte r istics
Description
S h oc k
30 G's (1/2 si n e), 11 ms dura- M eets M I L - Τ -28800B, class 5,
tion, 3 sh oc k s i n eac h direc- w hen i n stalle d i n q ualified
tio n along 3 ma j or axes, 18 p ower mo
du les ."
total sh oc k s .
Ben c h H an d ling` 12 d rops from
45°, 4" or M eets M I L - Τ -28800B, class 5 .
eq u ili b rium, w h ic h ever occurs
fi rst .
Transportatio
n ` Qualified un d er N atio n al Safe Tra
n sit Associatio n P res h ipme n t Test
Pr oce du res 1A-B-1, and 1A-B-2 .
EMC W it
h i n limits of MIL-461A, an d F.C .C . R egulatio n s, P art 15, Sub p
art
J,
Class Α .
E lectrical Discharge 20 kV maximum charge
applied to i n strument case .

O
PER ATING
INSTR U CTIONS
I N T R OD U
CTIO N
T h is sectio n of them a nu al
provi des operati n g i n forma-
tio n re qu ired to
obtai n t he most effective p erforma
n
ce
from
t he F G 501 Α .I n clude d are installatio
nand re m oval
i n st r uctio n s, α fu n ctio n al description of
t he fro n t p an el
co n t r ols, a nd α ge ne r al descri
p tion of t he operati n g
mo des . Some b asic a pp licatio
ns
of
t h e instr u ment are also
br iefly discussed .
I N STA LL ATIO N A N D REM O
V A L
T h e F G 501 Α is cali b rate d a n d rea d y to use
w h en
receive d . It operates i non e com p artme
n t of
any TM
500-
series power mo du le . R efe r to t he p ower
module i n st r uc-
tio n ma n ual for li ne voltage re qu
irements an d power
m od ule operatio n .
To p revent d amage to t he F G 501
Α , t ur n t h e powe r
mo d ule off befor e installation
or r emoval of t he
i n st r ume n t from t he mainframe .
Do not use ex-
cessive fo r ce to install
o r r emove .
C hec k to see t h at t h e
plastic ba r rie r s on t h e i n te r-
connecti n g j ack of
t h e selecte d powe r module com p art-
me n t matc
h t he cu to u ts i n t h e F G 501 Α circuit boa rd edge
connector
. If t hey d o not matc h , d o not i
n sert t he
instrume n t un til t h e reaso n is found . Wh en
t he units are
p r op erly matc hed , align t he F G 501
Α
ch
assis wit h t he
u p per a nd lower g u i d es of
t he selected com p artme n t (see
F ig . 2-1) . I nse rt t he
F G 501 Α i nto t h e compartme n t an d
press
firmly to seat t h e circ u it b oar d ed geconn ector
ί η t he
power mo d ule i n terconn
ecting j ack . Apply p ower to t he
F G 501 Α b y o p
erati n g t h ep ower switc h on t he p owe
r
mo d ule .
To remove t he F G 501
Α
from
t he power module, pull
t h e release latc
h (located i nth e lower left cor n er) un til
t h
e
i n
terconnecti n g j ack d isengages . T he F G 501 Α will now
slide st r aig h t out .
REP AC K AGI
N
G
F O R S H I PMEN T
If t h e Te k tro n ix inst ru me n t is to b e sh
ipped to α
Te k tro n ix Service Ce n ter for service or
repair, attac hαtag
Section 2 -
F
G
501 Α
s h owing : owne
r (wit h a dd ress) a nd t h e n ame of an
i n divi d ual at
you r firm t h at can b e co n tacted .
I nclude
com p lete
i n str u me n t se r ial n u m b er a
nd α desc r i p tio n of
t h e service r e qu ired .
If t he origi n al pac k age is n ot fit fo r use o
r n ot availa b le,
repac k age t h e i n stru m e n t as follows :
Surro un d t he inst ru ment
wit h polyet h ele ne sh eeti ng, or
ot h er su
ita b le m aterial, to protect t he exterior
fi n is h .
O b tai nα carto n of cor r ugate
d ca r dboa rd of ad equate
st r ength a nd h
avi ng i n si d e dimensions no lesst h a n six
i nc h es mo r e t
h
an
t he i n st r ume n t dime nsions . Cus
hion
t he i n strume
n t b y tig h tly pac k i n g dunnage o r uret
ha ne
foam betwee
n t he carto n a nd t he i n strume
n t,
on all
si d es . Seal t h e carto n wit h sh ippi
n g tape or an i n-
du strial sta p ler .
T he carton test strengt h fo r yo u r i n
str
u
me n t is 200
po und s .
F ig . 2-1 . Plug-in
installatio n a nd re m oval .
En glis h 2-1

O pe r ating I n st r uctio n s- F G 501 Α
Alt h oug
h t he F G 501 Α is calibrate dand read y to use,
t he functio ns a nd actions of t he co n trols an
d connectors
s h ould be reviewed b
efore attemp ti ng to use it . All
En glis h 2-2
CO
N T R O L S A N
D
CO
NNE CTO R S
F ig . 2-2 . Co
n t r ols and co n necto r s .
co n trols necessary fo r op eration of
t h e i n strume n t are
located on t h e
front pa n el . Α brief d escri p tion of t h ese
controls follows . R efer to F ig . 2-2 .

Ο
MUL TI PL I ER -Selectst h eo u t p ut fre q ue n cy i neigh t
d eca d e ste ps i n co njun ction wit h t h e FRE Q
UEN
CY
Hz co n tr ol .
Operati ng
Inst ru ctio n s- F G 501 Α
GAT E-Wh en p r esse d ca uses co n ti nu o us o u t pu t of
t he selecte d wavefo r m fo r t h e d uratio n of t h e gati ng
p ulse .
S
L
O
PE-Bu tto n selects, in TR IG mode, t he slope of
t he i npu t sig n al w h ic h will trigge r t h e selecte d
ou t pu t waveform . In GAT E m od e, w h et h e r o u t pu t
gati ng will occur w
h
en t
h
e
level
of
t h
e
i n p u t sig n al is
ab ove o r b elow t he t hresh ol d level of +1 V .
TR IG/GAT E IN - Βη c conn ector u sed to apply t h e
exte rn al t r igger or gati n g sig n al .
V C
F INPU T- Bn
c
conn ecto r fo r applyi n g
an
exter-
nal voltage for co n t r olli n g t he o u tput fre qu en cy of
t he ge ne r ato r .
TR IGG ER
OUTPUT
- Βηε conn ector w h ic h o u t p uts
o n e p ositive pu lse for eac h cycle of t h e selecte d
ou t pu t wavefo rm .
O U T PU T CO N T
R
O
L
S
ATT ENUATO R BU TTO N S-Atte nuate t
h
e a
mp li-
t ud e of
t h
e
selecte d o u t pu t waveform ί η20 dB steps
to α maximum of 60 dB w h en pressed .
A MPL - V ar ί es t h e amplit ud e of t
he
selected o u
t pu t
waveform , betwee n ste p s of t h e atte n uato r butto n s .
OFFSET-Pull
and tur n co n t r ol, conce n t r ic wit h t he
AM
PL co n trol, provi d es up to ±13 V d o offset of t he
o u t pu t wavefo r m .
OUTPUT - Βπε conn ecto r for ou t p ut of t he selecte d
waveform
.
RELE AS E LATCH-Pull to d
ise n gage t h e F G 501 Α
fr
om
t h e
power
mod u le .
E nglis h
2-3
PO WER -Illumi n ate d w h en p owe r is a pp lie d to t he
11
F G 501 Α .
FRE Q UEN CY CO N T R O L A N
D FUN
CTIO
N
S ELE CTIO N
12
FRE Q UEN CY Hz-Selects
t he fre q ue n cy of t h e
o u t pu t wavefo r m i n co njun ctio n wit h t h e
MUL TI PL I ER co n trol .
FRE Q
-
10-ill um i n ate d w he n t h e va r ia b le sy m - 13
met r y f un ctio n is activated .
4
Ο
FUN CTIO
N
BU
TTO N S-Select sq ua r e, t r iangle,
14
a nd sine wavefo r ms .
Ο
VA R
SY
MM-(pu sh to e na b le) a dju sts time- b ase d
symmetry of t he selecte d o u t p ut wavefo rm . R e du ces
15
t he f r e quency of t h e outp u t wavefo r m b yα facto r
-
10 a nd ill um i n ates t he FRE Q = 10
i n
dicator
.
Ο
FRE Q UEN CY VERN I ER-F or fi n e ad ju stme n t of
o u t pu tfr eq uen cy to
at
least
1
par tin
10' of f u ll scale .
16
T R
IGG
ER A N D GAT E CO N T R O L S
VA R 0-Selects ph ase
lea d
o
r lag, up to ±90°,
18
relative to i np ut t r igge r or gate waveform .
Ο
9
FREE RUN-Wh e
n pr
esse
d cau ses conti nu ous
wavefo r
m
o u
t p
ut
.
19
10
T R IG- Wh en presse d cau ses o u t pu t of o ne cycle of
selected wavefo r m fo r eac h t r igge r pu lse applie d to 20
t he TR IG/GAT E IN conn ector .

O pe r ati ng I n st r uctions- F G 501 Α
O PER ATI
N
G CO
N SID ER ATIO N S
OU T PU T CO NNE CTIO
N
S
T he out p ut of t he F G

501A is designed to operate as α
50 Ω voltage sou rce wor k i n g into α50 Ω loa d . At
h ig h
er
f r equen cies, an un termi n ated o
r im p
ro p
erly terminated
output
will
cause
aberrations on t h e out p ut waveform .
L oads less t ha n 50 Ω will reduce t he waveform amplitude .
E xcessive distortio n or aberratio
n
s,
due to im p ro p er
termination, are less
n oticea b le at t he lower frequen cies
(es p
ecially wit h sine and s q uare waveforms) . To ensure
wavefo r m p urity, observe t h e following p recautions :
1 . Use goo d q uality 50 Ω coaxial cables and co
nnec-
tors .
2 .

M a k e all conn ections tig
h t
a nd
as sh ort as p ossible .
3 . Use good q uality atte n uators if it is necessary to
reduce waveform am p litude a pp lie d to se
n sitive circuits .
4 . U setermi n atio n sorimpedance matching devices to
avoi d reflectio ns w h en usi ng lo n g cables (6 feet or
more) .
5 .
En sure t h at atte nu ators, terminatio n s, etc . have
adequate p ower h an dling cap abilities for t h e output
waveform .
If t h e r e is αd o voltage across t h e output
loa d , use α
coupli n g ca p acitor i n series
wit h t he loa d . T h e time
co n sta n t of t
he co
up
li n g capacitor a nd load mustbe lo ng
en
oug h to mai n tai n p ulse flatness .
R IS E TI ME AN D F A LL TI ME
If t h e F G 501 Α is used to measure t h e rise or falltime of
αd evice, t he riestime ch aracteristics of associate
deq uip-
me n t s h ould beco n sidered .
If t h
e
risetime of t he d evice
under test is at least 10
times greater t h a n t he combine d
risetimes of t he F G 501
Α
and
associated e qu i p ment, t h e
error
intro d uced will n ot excee d 1 ο / ο , and gen erally can be
ignore d . Wh en t he rise or falltime of t h e test device is
less
t han 10 times as lo
ng as t h e combi ned risetimes of t he
testi n g system, t he actual risetime of t he system must be
calculated . T he risetime of t he device un d er test
can
be
d etermi ned once t h e risetime of
t h e system is kn ow n .
Englis h 2- 4
I MPE DA
NC E M ATC H I N G
If t he F G 501 Α is driving
α h ig h im p edance s uch as t he
1 MO
i npu t im p eda n ce (paralleled by α stated
cap acita n ce) of t he vertical
in pu t of an oscilloscope,
con nect t he tra nsmission li n e to α 50
Ω
atte
nu
ator,
50 Ω
termi n ation, an d t h en to
t he oscilloscope i np ut . T he
attenuator isolates
t he i n p ut capacita nce of t he d evice,
and t
he F
G
501 Α is prop erly terminate d .
F I R ST TIME O PER ATIO
N
The Co n trols an d Co nnectors p ages give α descri
p tio n
of t he front pan el co n trols and conn
ectors . T he waveform
selectio n an d frequency d
etermi n i ngco n trols are o u tli ned
in
blue, t h e trigger fu n ction co n trols and i n p u ts are
outlined in green , a nd t he out p ut co n trols are o
u tli n ed i n
blac k .
T he following exercise
will familiarizet he o p erator wit h
most functio
ns
of
t h e F G 501 Α .
NO
ΤΕ
If any disc r epancies are e n counte re d during the
exercise, refe r t h e con d ition to
qualifie d se r vice
p ersonnel .
P reset t h e controls as follows :
B lue sectio n :
FRE
Q
UEN CY
Hz

10
MUL TI PL I ER 10`
FRE
Q
UEN CYVERN I ER

F ully cw
W A VEF O
RM -SI NE i n
VA R SY MM

off
G r een sectio n :
FREE RUN

i n
B lac k sectio n :
ATT ENUATO R -20 d
B
A MPL (variable)

Ce n tere d
O
FF
S
E T

off
Co nn ect a50 Ω bnc coaxial ca b le terminate
d i n 50 Ω t ο
t h e vertical in p ut of an
oscilloscope . Set t h e oscilloscope
controls to :
V ertical

1 V /Div DC Coupled
H orizo n tal (Time B ase)

1 ms/Div
T he oscillosco pe should dis p lay 1 complete cycle p
er
d ivisio n of t h e si n e waveform
(
app
roximately 10 cycles
across t he graticule) .