Tektronix DC 509 User manual

i
,

1
ο
ί
ι
i" -
-
ill- 76
D50 9

-
Ε
1171

R

" :
6

WithOptions
*

y

-~ f

Ττ
" Μ

τ W
ί
.t -
Υ t -

τ ε+

,~ z
λ .
i
1
ks

_Ζ
Α
-
4i
τ ι :
ι 5

y μ 'i
ί7ί ". Υλ .

ί
ή

1 ~
l' ι
.
C
1 η ς
~0 . y-
Ζ :

-
λ
. ι
"' π 1
Ν . ιι '~

j ε

Α ,~
" ι
.
t`άι Τ ~ ι
λ ι
~
ί τ
i
i.,

y

κ

'`t
α

070-3464-00
T eIctro n
nc
UNIVERSAL
COUNTER/TIMER
With Options
CO
MM ITT E D TO E XC ELLEN C E
I N ST RU
CTIO N M A NU A L
Te k troni x , Inc .
Ρ . Ο . Box 500
Β ea verto n , Oregon

97077

Serial
N umber
F irst P rinti n g FEB 1981

Copyrig h t 1 1981 T ek tronix,
Inc . All rig h ts rese r ved .
Co
n tents
of t h is publication may
not be reproduced in
a ny for m with
o
u t t he
written permission of Te k tronix, Inc .
P
rod ucts of Te k tronix, Inc . and
its subsi d iaries are
covere
dby U .S . and fo r eign pate n ts
and or pending
patents .
T
EK TR ONIX, ΤΕΚ . SCO PE-M OB
I LE, and '

are reg-
istere
d trademar ks of Te k tronix, Inc . ΤΕΙ _E QU IP
M ENT is
α registered tra
d emar k of Te ktron ix U .K . Limited .
P
rinted in U
.S .
Α .
S p ecification and price ch ange
privileges are reserved :

ι
ι
ι
Page

Page
L IST O F I LLU ST R ATIO NS ........ . ............. .

i

Sectio n 3 T heory of O p eration .............. .

3-1
O PER ATO R 'S SA FE TY S UMM A R Y . ...............

ii
-

S ERV IC E SA FE TY S UMM AR Y ... . .............. .. iii
ι
ιι
ι
ι
Section 1 S p ecificatio n ............... ...... 1-1
Section 2 O p e r ati n g I n st ru ctio
ns
........ . .....

2-1
WA RN I NG
TA BLE O F CO N T EN TS
DC 509
Sectio n 4 Calib r atio n

........ ............. .

4-1
THE FO LL O W I NG S ERV IC E I N ST RU CTIO NS ARE
FO RUSE BY QU A L I F I ED PER SO NNEL O NL Y . T O
A V OID PER SO N AL I NJUR Y, DO NOT PERF O RM

Sectio n 8 Diag r ams a nd Ill u st r atio ns ..........

8-1
ANY SERV ICI NG OT HER MAN ΤΗΑΤ CO N TAI NE D
IN O PER ATI NG I N ST RU CTIO NS UNLESS YO UA RE
QU A L I F I ED Τ 0 DO SO .

Sectio n 9

R e p lacea b le M ec ha n ical Parts .......

9-1
L
IST O F I LLU ST R ATIO NS
Performance C
heck P roce dure .... .

4-1
Ad j ustment Procedure ........... .

4-17
Sectio
n5 M
ai
n
te
nan
ce ........ . ............ .

5-1
Sectio n 6

O p tio ns ............ . .............

6-1
Sectio
n ?
Re placea b le Electrical Parts ........ .

7-1
F
ig .

F ig .
No .

Page No .

Page
DC 509 Un iversal Counter/Timer . .......

iv

4-3

C heck set u p for Performance C heck ste p s 6,
2-1

Plug-in installation and removal . . .......

2-2

7, and 8 ............ . ............. ..

4-5
2-2

DC 509
f r
o
n
t pan el d is p lay, co
n
trols,

4-4

C
heck
setu p for Performance C
heck ste p 9

4-8
andconnectors ............... .......

2-4

4-5

C
heck set u p for Performance C h eck step 10

4-9
2-3

Advantages in signal
atte
n
uatio
n
. .......

2-7

4-6

C h eck setup for Performa nce C heck step 14

4-12
2-4

Ty p ical triggering
levels and sou rces of

4-7

C h ec k set up for Performance C heck steps
triggering errors
............... . ......

2-9

16 an d17 ... . ................ . .....

4-14
2-5

M eas urement exam p les for FRE Q UEN CY Α

5-1

Partial rig h t view of inst r ument wit h cover
or PER IOD Α .... ............. . ......

2-10

remove d ( p ictoral) ..... . ..............

5-2
2-6

M eas urement exam p les for W IDT H Α a nd

5-2

Screw locations for d igital ci r cu it board
TIME Α - Β ..... . ............ . ......

2-10

removal . ................ . . .........

5-3
2-7

M easurement example for synchronous

5-3

Met h od of removing magnetic latc h r elay
in p u t signals .... . ............ . ......

2-11

armature .................. . ........

5-3
2-8

M easurement example, TIME Α - Β u si ng

5-4

Typical squ are p in assembly ... . ........

5-5
t h e A RM input ... . ............ . ......

2-11

5-5

Ex p loded view of circ u it board p i n a nd ferrule

5-6
2-9

Examples of arming ..... . . ...........

2-13

5-6

D u
al
entry
circuit board pin sock et . ......

5-6
4-1

C heck set up for Performance C
heck ste p s 3

5-7

Bottom entry circuit
b oard
pin
sock et . . . .

5-6
and 11
.............. .............
. .

4-4

5-8

Orientation anddisassembly of multi p i n
"

4-2

C heck setu p for Performance C
heck
ste p s4

connectors ... .
. .................. . . .

5-7
and 5 .............
. . ............. . .

4-4

5-9

R ear interface connector assig n me n ts
. . . .

5-8
5-10

K ernel Sig n ature Analysis co n nections . . . .

5-12

DC 509
O PER ATO RS SA FE TY
S UMM A RY
T he general safety informatio n
in t h is p art of t he summary
is

P owe r So ur
ce
for bot ho p erating and
servicing p erso nn el . S p ecific

This produ ct is i n ten d
ed to o p erate f r om αp ower module
warnings and cautions will be fo und
t
h
ro u g h out t h e man u al

connected to α p ower source t h
at
will
not apply mo r e t h an
w here t hey apply, but
may
n
ot a p pear in t h is summary .

250 volts rms between t h
e supp
ly
conductors o r between
eit h er supp ly con
d uctor and ground . Α p rotective ground
connection by
way
of t he grounding
conducto r i n t he p ower
T ERM S

cord is essential for safe operation .
In T h is Manual
CA U TIO N statements
ide
n
tify conditions or p ractices t h
at
could result in damage
to t
he eq
ui p ment or ot h er p rope r ty .
W A RN I NG stateme n
ts identify conditions o r p ractices t h
at
cou l d result i n person al in j
u
r y
or loss of life .
As M a rk ed on Equipment
CA U TIO N i n dicates αp ersonal in j
ury h azard n ot immediate-
ly accessi b le as one reads t he mar k ing,
or α h azard to p rop-
erty inclu
d ing t he e q uipment itself .
DA NG ER
indicates αperson al in j ury h azar d
immediately ac-
cessi b le as one
reads t he mar k ing .
In T h is Manual
SY MB O L S
T h is sym b ol in d icates w here a
pp licable cau-
tionary or ot h er information
is to b e found .
As M a rk
ed on E q u
i
p ment
DA N
G ER - H ig h voltage .
G r ou n ding t he Pr od u ct
T h is produ ct is grounded t h roug h th e ground ing
co
n
ductor
of the p ower module p ower cor d . To avoid electrical
shock
,
p
lug t h e p ower co r d i n to αprop e r ly wire d
rece p tacle b efore
connecti n g to t he prod uct input or out p ut te r minals
.
Α p
ro-
tective
ground con nection b y way of t h e grounding
conduc-
tor
i n
t
he
power module power cor d is esse n tial fo r
safe
operation
.
Danger Arising
F rom L oss of G r oun d
U p on loss of t he
p rotective-ground connection, all accessi-
b le conductive p arts (includi ng kn
obs an d controls t h at may
appear to b e insulati n g) can render
an elect
r
ic shock .
U se t h e Pr op er F use
To avoid fire h azard, use only t he fuse
of correct type, volt-
age rating and current rating as specifie d i n t he
pa
r
ts list for
your
pro
d u ct .
R efer fuse re placement to q ualified service
personnel
.
Do N ot O p e r
ate
in
E xp losive Atmos p he r es
To avoid exp losion, do not
operate t h is p r o d uct i n an explo-
sive atmos phere unless it h as b
een specifically certifie d for
suc ho p eration .
Ο

P rotective
ground (eart h ) termi n al .

Do N ot O p e r ate W it hou t
Cove
r
s
1
ι
ι
ι
ι
ι
ι
ι
ι
ι
ι
ι
ι
To avoid personal in j ury, do not
o p erate t h is p roduct wit h -

,
out covers or p anels installed .
Do
n
ot apply p ower to t he
ATTENTION
-
refer to ma nu al .

p l u
g-in via αp l u g-in exte nder .

ι
ι
ι
ι
ιι
ι
ι
ι
ι
ι
ι
ι
ι
ι
ι
S ERV
IC
E
SA FE TY S UMM A R Y
F OR Q U A L I F I E D S ERV
IC
E
PER SONNEL O NL Y
R efer also to t he preceding O p erators
Safety Summary .
DC 509
Do N ot Se r vice Alo ne

Disconnect p ower before removing protective
p anels, sol-
dering, o r re p lacing com p onents .
Do not perform inte rn al service or ad j ustment
of t
h
is p ro d -
uct u nless a n ot h er person capa b le of re n dering first ai d
and
resuscitation is p r esent .

P
ower So u rce
Th is product is inten ded to operate in
α p ower modulecon
U se Ca
r
e Wh en Servici ng W it h P ower On

nected to α power source t h at will n
ot apply more
t han
250 volts rms betwee n t he
supp
ly
con ductors or betwee
n
'

Dangerous voltages may exist at several poi n ts in t h is pro d -

eit h er sup ply con d uctor and ground . Α p rotective g r ound
uct . To avoi d p ersonal in j ury, do n ot touc h expose d conn ec-

connection b y
way of
t he grounding
conductor
in
t
he
power
tions and com p one n ts w h ile p ower is on .

cord is essen tial for
safe o p eration
.

DC 509
iv
ε U
Ν G ιεΟεν
FΘ F UU έχ C F Α
-
ΗΑΤ f Ο WA-
TIME , α-- "
Τγ 1 ΙΙΣΝ
Α -
t
V E N TS Θ 4 Σ :R
Α --
T WE ΜΑΝΘΑΙ
-
W i Ά W Τ Α -
ϋλΜ
ίΡ
( ;
βΕ _
'
COMP
T E ST
_
AUTO JEVN
TR IG
4'T RU )0 Α -
CHA NNE
L Α
S L O P E SOU
RC E
'
-
ιχτ
ι - εχτ
DC 509 Un iversal Coun te r /Time r
; Ε S ΕΣ
ϋR ΕΜ
W
-1Z
ΤΟΡ 1
ΠΑ R
Τ
iXT INPUTS
i
ΛΑ 52 -^
. :- 2ΕφF ~`
Υρχ =- ; ΜΟΥι
,~
ι
ι

S
PE
CI
F ICATIO N
I nstrument Descri p tion

Stan d ar d Accessories
M easurement results are displaye d in an eight-digit LED
readout, with t he decimal p oint automatically p ositioned .
The displayed count overflow is indicated byα flashing dis-
play . The counter also uses three digits of the seven-seg-
ment LED display to indicate internal or operating error
codes and two digits for external signal p robe compensation
results .
The DC 509 can b e equipped with an optional, oven con-
trolle d , 10 MHz crystal oscillator to obtain αh ighly stable
and precise internal time base .
Instrument Options
Section 1-DC
509
The DC 509 is α o ne-wide, universal counter/timer p lug-

1 Instruction Manual
in . It features reciprocal frequency, p erio d ,
events Βd uring
Α
a
nd Totalize measurements to 135 MHz, time interval and

1 Cable assembly,
bnc-to-tip
j
ack
widths features 10 n s single-shot resolution, for timing mea-
surements . For repetitive timing measurements, averaging
and pseudo-random time base modulation
circuitry p rovi des

.
increased accuracy over α wide range of in p ut signals .
NOTE
R
efer to t he tabbed Accessories p age at the rear of
The DC 509 provides trigger
level
outputs at b oth t he

t his manual for more information .
front p anel and rear interface for increased measurement
convenience . Shaped outputs and an arming input are indi-
vidually available at either the front panel or the rear inter
face .
B oth
C
hannel Α
and
Channel Β may also be sourced

P erformance Con d itions
from
either the
front
p anel or the rear
interface using the
front panel switch .
The limits state d in the P erformanceRequirements col-
umns of the following tables are valid only if the DC 509 has
b een calibrated
at an ambient temperature b etween +20°C
and +30°C and is operating at an ambient temperature b e-
tween 0°C and +50°C, u nless otherwise stated .
Information given in the Supp lemental Information and
Descrip tion columns of the following tables is provided for
user information only and should not b e interpreted as P er-
formance Check re q uirements .
The DC 509 must be operated or stored in an environ-
mentwhose limits are described u nder E nvironmental
Characteristics .
Option 01 replaces the
internal
10
MHz
time b ase (clock)

Allow at least 20 minutes warm-up time for operation to
circuit with α self-contained
prop ortional
tem p
erature con-

specified
accuracy, 60 minutes after storage in α h igh hu-
trolled oven oscillator for increased accuracy and stability .

midity environment .

S p ecification-DC 509
In p ut F re q uency R ange
F ront Pa n el( E xt)
DC Coupled
Χ 1
Χ 5
C h aracter i st i cs

P e rf o r m a n ce R e qu i r e m en ts

S
u pp
lemental
I n fo r mation
AC Cou p led
R ear I n terface (Int)
DC Cou p led
AC Cou p led
In pu t Sensitivity
Χ 1 Attenuation
DC Cou p led
AC Coupled
Χ
5
Attenuation Accuracy
(AC or DC Co u pled)
M i n im u m Input
P
ulse
W i
d
t h
In
p
ut
Dynamic R ange
Trigger L evels
Manual
R ange
A U TO TR IG
R ange
Accuracy
Auto-Trigger
Sensitivity
Table 1-1
ELE CT R ICA L C H A R ACT ER ISTICS
C HA NNEL Α an dCH A NNEL Β I NPU TS
> Ο Hz to %f
F
UN CTIO N
_-10 Hz to %f
F
UN CTIO N
> 0 Hz to -_50 MHz .
_-10 Hz to -_50
MHz .
_-20 m V rms (56 .6 m V ρ - p) from > 0 H z to
,100 MH z .

R ms
val u
es
for
Sine
W aves f r om 25 Ω
source
_-40 m
V rms
(113
m Vρ -
p)
from 100 MH z to
-_ f
FUNCTION
_-20 m V rms (56 .6 m V ρ - p) from _-10 H z to
-_100 MH z .
_-40 m V rms (113
m V ρ -
p)
from 100 MH z to
f fun ctio n
3ns@115m V ρ - ρ .
± 3 .2 V .
+3
.200 to -3 .175 V wit h 25 m V resolutio n .
See Fu nctio
ns
Specifications
Typically _-5% ρ - ρ ab errations . _-2%
at DC
-3 .2
_- V . --+3 .2
m
Vin
.

ρ - ρ

_-3 V .

(
F
or

Input

Signal
risetimes _-5 ns)
V in ρ - ρ _-15V
. ( F or I np ut Signal
risetimes _5 ns)
±15
m V ±40 Ει V /°C

reference d to
25°C . (Typical)
,125 m Vρ - ρ times attenuator . _-20 H z to
-_100 MHz .

Duty cycle
in d e p endent . Trigger poi n t
is set once (eac
h time t he button is de-
p ressed) to α nominal 50% of t he ρ - ρ
i np ut signal . F or signals
from
DC
to
20 H z t he
level will still be set between
0% an d
100% b ut will not necessarily
be t h e 50% p oint .

M aximum In p ut V oltage
Front Panel
Χ
1
Input Imp edance
Front
Panel
Χ 1, Χ 5
Slope
Trigger L evel Output Accuracy
Χ5
R ear Interface
Χ 1, Χ 5
R
ear Interface
Χ 1, Χ 5
Characteristics
Table 1-1 (cont)
Performance R equirements
CHANNEL Α and Β I NPUTS (cont)
W ithin ±10 mV of internal DC trigger level
voltage . (Actual
triggering
voltage is subject
to
changes in input signal-to-noise r atio and
risetime .) See resolution and accuracy
statements .
1 Μ 4 ±2%, _-30 p F
5012 ± 10% @ dc .
Independently selectable . (+) for counting
p ositive pulses . (-) for
counting negative
p ulses .
ARMING INPUT, SHAPED OUTPUTS
Supplemental Information
V pk Χ 200
V

400, DC to 50 kHz
V P- ρ
P-P

20/f MHz, 50 kHz to 1 .33 MHz .
V
P-P
_-15, 1
.33
MHz
to 150
MHz .
V pk _-200
V

<400 DC to 5 MHz .
P-P
V

Χ 2000/f MHz, 5 MHz to 80 MHz .
V P-P
P-P
Χ 25, 80 MHz to 150 MHz
.
V pk
,
3 .6 V .
(-13 V _-V . _-+ 13 V, Χ 1) (-65 _-V .
in
+65 V, Χ 5)
Arming Input

Arming is not recommended for Chan-
nel Α frequencies ,70 MHz .
Pulse R es p onse

Ρω _-100 ns (V H --2 .4, V
L
--0
.4)

Armed

when

Vin

,2 .4 .

Disarmed
when
V . _-0 .4 V .
Maximum Safe In
p
ut V oltage

V pk _-10 V
.

Ι .
n
low
;
3 .2 mA (2 standard TTL
loads)
Shaped Out p uts
Delay from front p anel

13 ns typically
Am p
litude

0 to -_+0 .3
V from 50112
ground referenced
source .
R isetime

1

1 3 ns into 50 < .2 (ty p ical)
Specification-DC 509

S p ecificatio n -DC 509
Ta b le 1-1 (con t)
C ha r acte r istics

Ι

Perfor m ance Re qu i r eme n ts
Repetition Rate

1 ,135 MHz
FUN CTIO NS
FRE Q UEN CY Α
Range

~
--100 μΗτ to --135 MH z
PER IOD Α
Range

~
--7 .40 ns to ,3 .05 h o u rs .
Cloc
k P
eriod Counted

Ι

Ι

10 ns
TIME A-B
Range

~
<15 ns (10 ns typical) to --3 .05
h
ours
Cloc k P eriod Counted

10 ns
C hannel Delay M ismatc
h
E xter nal Input ( F ro n t)

--2 n s
I n ternal Input ( R ear)

--3 ns
M inimum Dead
Time (Time Β
-A)

15 ns (10 ns ty p ical)
S upp leme n tal Info r matio n
Resolutio n ±
L
SD
± 1 .4 Χ T r igge r
J
itter E
rror/
Ν Χ
( F re qΑ ) 2
Accuracy

Resolutio n ± (Timebase E rror Χ
F req ue n cy)
Resolution

Ι

Ι

± L SD ±
1 .4
Χ
Trigger
J
itter Ε rr
ο
r/ Ν
Accuracy

R esolution ± (Timebase Error Χ
P eriod Α )
RATIO Β / Α

Average d by Α
Range

10 -7 to 10 8
F requency Ra n ge
C HΑ

,0 to ,135 MHz
C
HΒ

--0 to --125 MH z
Resolution

±
L
SD
± 1 .4 Χ Β Trigger J itter Err o r Χ
FRE QΒ / Ν
Accuracy

I

I

Same as Resol u tion .
Resolution

± L SD (+C HΑ Trigger J itter
E rror
±CH Β
Trigge r
J
itter Ε rr ο r)\/ . U sa b le
resolution --5 p s
Accuracy

Resolution ±(Timebase E rror Χ TI) +
(C HΒ Slew Rate Error -C
H
Α Slew
R
ate E
r r
or) ± C
h annel Delay M ismatc h

Ta b le 1-1 (co n t)
Characteristics

Pe r fo r m a n ce R eq u i r eme n ts

Ι

Su pp le
m
en
tal I nfo r matio n
EVEN TS Β D UR Α

Averaged by
Α
R ange

~
10-7 to 10 8
M aximumΒ F
re qu
ency

1 125 MH z
M inimum Α Pulse W idt h

I 15 ns (10 ns ty p ical) .
M i n imum Time B etwee n Α
Pulses

~
15
ns
M inimum Time B etween Α Start
E dgeand first Β E vent

~
15 ns (7 ns ty p ical)
R esolution
Acc uracy

R
esolution +
FRE
Q
Β
(Stop Slew
R ate Err o r -Start Slew R ate E rror)
W IDT HΑ
R an ge

~
_-15 ns (10 ns ty p ical) to ,3 .05 h ours .
R esolution

± L SD+ (± Start
Trigger J itter
Error
± Stop Trigger
J itte r E rror)/VN
-
Accuracy

R esolution ± (Timebase E rr o r Χ
W idt h )
+ (Stop Slew R ate Error
-Start Slew R ate E rr or) ±5 n s (2 n s
ty p ical)
Cloc
k P
eriod Counted

Ι

Ι

10 ns
M inim u m Dea d Time
B etween Pu lses

~
15 ns (10 ns ty p ical) .
FUN CTIONS (cont)
Time Manual
R ange

0 to 3 .05 h o u rs .

E lectro nic

Sto p watc h -accumulates
time from
Start
until
Sto p .
R esolution

±L SD
Acc uracy

±R esolutio
n ±(Time
b ase
E rror Χ
TIM E)
L SD

100 ms
R ep etition R ate

Ι > 0 to ,135 MHz
Sp ecification-DC
509
± L SD + (FRE Q Β /V'P) ± Trigger
J itter E rror ( Α Start E dge) ±
Trigger
J itter E
rror ( Α
Stop
Edge)
TOTA L IZ E Α
R
ange

0 to 2 4° (1 .09 Χ 10 12 ) Counts

Acc u m u lates Α events from Start to
Sto p
Disp lay Scaling

Displayed
R
esult
= Α EVEN TS/ Ν Wh ere

Allows totalizi n g to more t ha n 8 digits
Ν = 1, 10, 10 2 to 10 8 selected b y t he

of display . Wh ile totalizing, t he dis p lay
A VER AG E S control . In A U TO, Ν = 1 .

may be s h ifte d to d isplay L SD's wit h -
out
affecting t he
measurement
in
p rogress .

S p ecificatio n -DC 509
Resolution and Accuracy
Defi
n
itio
ns
M inimum Dis p lay Time
Auto Averages
M
easurement
Time
P robe Com p
Accuracy
C h ar acte r istics
Ta b le 1-1 (co n t)
P
e
r
forma
n
ceReq u i
r
eme n ts
FUN CTIO N S (cont)
Dis p lays 0 or 1 for eac h c h annel
0- U nder Compensate d
1-Over
Com
p
ensate d
Trigger
J
itter
E
rror
(Seconds RIMS)

[(e,,)
+
(e,,2)2)]
(V rms)
Ν = Number of Averages
T he minimum num
b er of averages is selecte d by t he
A VER AG E S control in decade steps from 1 to 10 8 . At
C h annel Α re p etition rates above a p proximately
250 Hz t he act u al number of averages will be :
Ν
_
[FRE Q Α ( H z) Χ 4 mSec] + A VER AG E S setti n g
Ν = A VER
AG
ES
setti
n g
(below 250 H
z)
In t h e AU TOmode t he counter measures wit hα fixed mea-
surement time of about 300 ms .
Ν (auto)
;
FRE Q Α ( H z) Χ 0 .3 seconds .
Ν
is always
, 1 .
I np ut Slew Rate at T r igger P oi n t ( V /S)
S u pp le m e n tal Informatio n
Re q uires external
s qua
r
e wave
sig n
al
of ;z~2 V amplit ude at t he cou nter in-
p ut . F re q uency shou ld b e
~
1 kH z .
-- P robe Atten . Χ 50 m VΧ 100 (%)/ V .
n
at P ro b e
Accu
r
acy (2 .5%
nominal for Χ 5 pro be
wit h 10 Vρ - ρ at t he p ro be .
Wh ere
e
n
,
= 120 μ V rms ty p ical Counter In
p
ut N oise
en2
=V rms N
oise Voltage of
Inp u t
signal at
Trigger
P oi
n t
measured
wit hα 150 MH z ban dwidt h .
Slew Rate Error (Seconds) =

I n
put
H
ysteresis/2 (
V )/ In p
ut
Ι
Slew Rate Ι at Trigger P oint ( V /S)
N ote : Input hysteresis is ty p ically 20 m V ρ - p .
L SD : ( R ounded up t h e nearest decade)
FRE Q UEN CY Α

( F re q Α ) 2 / ( Ν Χ
108)
PER IOD Α

10 ns/
Ν
RATIO Β / Α

F re qΑ /( F re q Β Χ Ν )
TIME Α - Β

10 ns/ V Ν
WIDT H Α

10 ns/

` Ι
EVENTS ΒD UR Α

P eriod ΒΧ
(EVEN
TS ΒD UR A)/(Width
Α
VN -
)
Time
Base Error is
t
he su
m
of all errors s p ecified for
th
e time b ase used .
ME AS UREMEN T TI M I NG
100 ms (ty p ical)
300 ms (ty p ical)

Standard
Time B
ase
F re qu ency (at calibration)
E rror Terms
Temperature Stability
(0°C to +50°C)
Aging
Ad ju stment Resolutio n
O p tion 01
Time B
ase
F re q uency (at calibration)
E rror Terms
Temperature
Stability
(0°C to +50°C)
Warmup Time
Aging
At time of s h ipping
S h ort Term Stability
Ad ju stment Resolution
Ad j ustment Range
Option 01
M T BF
(Calculated)
DC 509
Tab
le 1-1 (co n t)
C h aracteristics

Pe r fo
r mance Req u i r eme nts

Supp lemental I nfo r mation
After 30 days of
continuous op eration
After 60 days of
conti n uous operation
Recommended Calibration Interval
10 MHz ±1 Χ 10 -7
_-5 Χ 10
-6
,1 Χ 10 -6/year
± 1 Χ
10 -7 or better
10 MH z ±2 Χ 10 -
8
I NT ERN A L TIME B AS ES
±2 Χ 10 -7 after warmu p .
Wit h in ±2 Χ 10 -7 of final fre q uency in less
t
h
an 10
minutes w h
en cold
starte d at 25°C
ambient .
1 Χ 10 -6 /day maxim u
m .
4Χ 10 -6 /wee k maximum .
1 Χ
10 -6/year
maximum .
± 2 Χ
10 -6 or better
.
Tab le 1-2
M ISC ELL A NE O US
Typical
P
ower Consum
p tion at 25°C and nominal ac line voltage
DC 509
W
it
h p
ro p ortional oven
.
C ha r acte r istics

Ι

Desc r i p tio n
,1 Χ 10 -9 rms based on60 consec u -
tive seco n d measureme n ts .
Sufficie n t for 8 years of agi ng .
TM 500 Series M ainframes
11 .1 W .
;14 .5 W .
S p
ecification-DC 509
10,512 h o u rs
@
25°C
2000 h ours or 6 mo n t h s w h ic h ever occurs first .

Specificatio n -DC 509
Tempe r ature
O p erati
ng
Non-operating
H umidity
Altitu de
O p erati n g
Non-operating
V ibration
S hoc k
B enc
h H andling
Transp ortation
EMC e
Characteristics
Ta b le 1-3
ENV I R O NMEN TA L °
0°C to +50°C
-55°C to +75°C
4 .6 K m (15,000 ft .)
15
K m
(50,000 ft .)
Desc r iption
Electrical Disc h arge

20 kV maxim u m c h arge a pp lied to instrument case .
M eets M I L - Τ -28800B, class 5 .
95% HF, 0°C to 30°C

Exceeds MIL- Τ -28800B, class 5 .
75% HF to 40°C
45% HF to 50°C
Exceedss M I L - Τ -28800B, class 5 .
0 .38 mm (0 .015") pea k -to- peak , 5H z

M eets M I L - Τ -28800B, class 5,
to 55 Hz, 75 mi n utes

w hen installed in qu alifie d
p ower modules .
30 g's (1 /2 sine)
11
ms duratio
n ,
3 shocks

M
eets
M I L - Τ
-28800B,
class 5
i neach di r ection ° along 3 ma j or axes,

w h en i n stalled i n q ualified
18 total s h ocks .

power modules .
12 dro
p s
from 45°, 41 , o r e qu ili b ri u m

M eets M I L - Τ -28800B, class 5,
w h ic h ever occurs first .

w h e n i n stalle d in qualified
p ower modules
b
Qualified under National Safe Tran sit Associatio
n Presh i p ment Test
Procedu
res
1A-B-1 and IIA-B-2 .
W it h in limits of F .C .C . regulations, Part 15, Su b part J, Class Α ; V ID E0871 and
MIL-461A tests RE 01, RE 02, C E 01, C E 03, R S01, R S03, CS01, and CS02, wit h
excep tions .'
Unused p lug-i n com p artments must be covere d wit hα b lan k p lug-in .
8
W
it
h p
owe
r
mo
d
ule .
b R efe r to TM 500/5000 powe r mo du le sp ecifictio n s .
W it hou t powe r mo du le .
d R equ i r es retai n er cli p in p l u g-i n exit di r ectio n .
e System pe r fo r ma n ce s ubj ect to excep tio
n
s of powe
r m o du le o r ot he r i nd ivi du al pl u g-i n s .
f W
it
h i n 20 dB
of
RE 02 li m its at 100, 300, 350, 400, a nd 600 MHz . W it h i n 30 dB of RE 02 limits at 150 a nd 200 MHz .

Finish
Net W eight
DC 509
Option 01
Characteristics
Maximum
Overall Dimensions
Height
W idth
Length
Enclosure Type and Style p er MIL-T-2880013
Type
Style
Table
1-4
PHYSICAL CHARACTERISTICS
2 l b s ., 4 oz .
2 lbs ., 8 oz .
126 .0 mm (4 .96 inches) .
66 .8
mm (2
.63 inches) .
296 .6 mm (11 .68 inches) .
Description
Specification-DC 509
Plastic-aluminum laminate front p anel . Anodized aluminum
chassis .
III
Ε (style F i n rackmount p ower modules)

T he instrument
may be operate d , stored, or sh i pp ed
wit h in t he environmental limits
stated in t he Specificatio
n
F irst Time I n s p ectio n

section of t h is manual . H owever, t he counter sh o u l d
be p ro-
Inspect t h e instr u ment for visi b le d amage (dents,

tected at all times from tem perature extremes w h ic h can
scratc h
es, etc .) .
K
eep t he original s h i pp ing container a nd

ca use condensation
to occ u r wit h in t he instrume n t .
pac k ing material for f u t u re
use .
If t he
instrument is
d amaged, n otify t h e carrier and t he nearest Te k t r o n ix
Ser-
vice Center or re p resentative .

PREP A R ATIO NF O RU SE
R
epack agi
ng
for S h i p ment
O
PERATING
INSTRUCTIONS
FR O N T P A NEL O PER ATIO N
I NTR OD U CTIO N

Op erati ng an d Non-Operating En vi r onments
S h oul d it become necessary
to return t
he i n
str u ment to α
Te k tronix Service Center for
service or re p air, attach αtag
to t h e instrument s h owing t h e ow n er (wit h address) and t h
e
name of t
he
in d ivi du al to be co n tacted, complete i n strument
serial n um b er,
o p
tion num
b er, an d α descri p tion of t he se r -
vice re q uired .
If t he original container
and p ac k aging material is u nfit fo r
use or not available, repac k age t h
e inst
r
ume n t as follows :
1 .
Obtain α carton of corrugate d cardboar d having inside
dimensions
no less
t han
six inc h es more t h an t he i n -
strument dimensions ; t h is will
allow
for
cush ioning .
T h e sh i p pi n g carton test stre n gth for your i n strument
is 200 p ounds .
2 . Surround t h e instrument wit h polyeth yle n e s h eeting
to
p rotect t
he
finis h
.
R ear Interface Co n si de r
ations
C HΑ an d C H Β In pu
ts
Trigger L evel Outputs (C HΑ a nd
CHΒ
)
3 . Cus h ion t he instrument on all sides by tig h tly pack i n g
dunnage
or uret
h
ane foam b etween carton and instru-

S
hap
ed Out p uts (C HΑ a nd C HΒ )
ment, allowi ng
t
hree
inc h es on all sides .

M easurement
Gate Output
Arming Inp u t
4 .
Seal t he carton wit hs h i pp ing ta p e
or
ind
u strial

10
MH z
Cloc k Output
staples .
E xternal Cloc k Inp u t (1, 5,
10 MH z)
5 . M ar k t h e
shipping carton "FRAGILE I N ST RUMEN T"

Prescaler Function
to indicate sp ecial h andling .

Reset In p ut
Sectio
n
2-DC 509
Α slot between pins 21 and 22 on t he rear
connector
identifies
t
h
is instrument as α member of t he TM 500
cou n ter family . If
you desire to u se you r co u nter to b uild α
system, insert
α
family
barrier key (Tek tro
n
ix P art No . 214-
1593-02) in t he corres p onding p ositio n
of
t h
e selected pow-
er mod u le j ack in order to p reve n t p l u g-ins belon gi n g to
α
different family from
b eing used in t h at compartment of t he
p ower mod u le .
W A RN I N G
To avoid electric s h oc k ,
disconnect t
h
ep ower mod u le
power co r db efore inserti n g t h
e
family
b arrier k ey i n
t h e power mo d ule j ac k . R efer t h e b arrier
key
i n
sertion
to qualified service pe r sonnel .
T he DC 509 h as t h e following
rear
i n
terface in pu t and
output
features :

O p e rati n g I n st ru ctio n s-DC 509
ΝΟΤΕ
R ear interface
information will be found in the M ainte-
nance section of this manual . R efer t he interface con-
nections to qualified service p ersonnel
.
CA U TIO
N
To
p revent damage to the instrument, turn
the
p
ower
module off b efore
installation or removal from the
power module . Do not use excessive force to install or
remove the instrument from the power module .
C heck to see t h at t he p lastic barrier
k
eys on
t he
interconncting j ack of t he selected power module com
p art-
me n t matc h t h e cutouts
i nthe rea r interface connector for
I n stallation and R
emoval

t h e cou
n
ter .
If t h ey do not matc h , do not i n se r t t h e counter
until t he reason is investigated .
ΝΟΤΕ
R efer to the Operator's
Safety Summary in the front
of
this manual b efore installing this instrument
in t he
power module .
If t h e cutou ts an d b arrier
keys matc h , align t h e chassis of
t
he
counter
with t h e u pp er-a nd lower gu i d es of t he selected
com p artment . See F ig . 2-1 . I nse r t t h e co un ter
into t h e com-
p artme n t and press firmly to seat t
herear i n terface conn ec-
tor . Apply p ower by op
erating t h eP O WER switch on t he
p ower module .
Refer to
t h e p ower module instruction manual a nd ma
ke

To remove
t he counter from t he p owe r module, t urn off
sure
t h at t h e line selector bloc k is p ositio
n
ed correctly for

t
h e P O
WER switc h , pull t he release latc h kn ob (located i
n
t he line voltage in use . C heck t h e cou
n
te
r
and
t he p ower

t h e lower left fro n t corner) un til t he i nterconnecting
j ac k dis-
module fo r t h epro p er fuses . Be certain
t h at t h e power plug

engages . Pull t h e counter straig
h t
out
of t he power module
for t he p ower module
h
as t
he
p
roper grou nd ing co n ductor .

com p artment .
2-2
F ig . 2-1 . P l u g-i n i n stallatio
na nd r emoval .
B ottom
G
r oove
0
(1431-21 ) 3464-02

O p e r ating Inst ru ctio n s-DC
509
FR O NT P A NEL DIS PL AY, CO N T R O L S
A N D

TIME Α - Β

M
easures
t h e time interval b etween
CO NNE CTO
RS

t he t r iggering eve n t on C hann el Α to
t he succeed ing triggeri ng event on
C h annel Β a nd d isplays an swer in
Dis p lay

units of time .
T h e dis p lay
contains eig h t seve n -segme n t LE Ds an d
six
ann u nciators . All
measurement results are dis p layed wit
h
t he b est possi
b le resolution . T he reado u t (result) for th e
measu r ement is always d is p layed in α rig
h
t-
h
and j
ustified
format wit h t he decimal point a u tomatically positioned . Dis-
played count
overflow is in d icated byα flas h ing dis p lay .
F
our
of t he ann un ciators are used to indicate t
he
un
its of
measurements : Hz/SEC for H ertz or seco
n ds, kHz/mS E C
for k ilo h ertz or millisecon d s, ΜΗτ /f ι S E C
for
mega
h ertz or
microseconds, and G H z/nS EC
for giga h ertz or
nanoseconds .

,
T h e
GAT E annunciator, w h e n illuminated, i n dicates t h at
'

t h e counter is
in t h
e p
rocess of acc u mulating co u nts for t h e
measurement .
T h
e
REM OT E an nun ciator is n ot used i n t h e
DC 509 .
W IDT HΑ

M eas u res t he time
i n terval b etween
t h e triggeri ng
point on t he lea d ing
edge of α pu lse a pp
lied to C h annel
Α to t he correspo
n ding triggering
point on
t h
e
trailing e dge of t h e
same pulse . P olarity of
t he leadi ng
e d ge is selected b y
t he C H A NNEL
Α S L O PE push b
u tton . A n swer dis-
played
in
un
its of time .
EVEN
TS Β

Counts and d isplays t h e number of
D UR Α

triggering events (pulses) a pp lied to
C h annel Β duri n gα preselecte
d gat-
ing interval appliedto
C h annel Α .
P olarity of t h e leadi n g e d ge of th e
C h annel Α gating interval
selected
by t h e C H A
NNEL Α SL O PE
pu s hb utto n .
In a dd
ition to displaying t he measurement results t he

TIME
MAN-

Α stop watc h function
. M eas u res
counter uses α t h ree- d igit, seve n -segment LE D d isplay to

U
A
L

and displays t he time
i n terval (to t h e
"

indicate internal or op erating er r or codes, and two
digits to

nearest one-te
n t h of α second) be-
re p ort t he results of compensati ng an
external signal p robe .

tween two
successive d epressions
See Self Test Dis p lay and P ro b e Com
p ensation .

of t h e

ME
AS
UREMEN T

STO P /
STA RT pus h b u tton . Time cou n t
may
b e reset to ze r o and restarte d
immediately b y p ressing and t hen
Co
n trols a nd Co n necto r s

releasing t he RE SET pushb utto
n
w h ile i n t h e start mode .
T he following information is α b rief f u nctional desc
r iption
of t he fro n t panel controls and con n ectors .
T hese items are
referenced by number (see F ig . 2-2) and
d escri bed as
follows :
ι
ι
ι
ι
TOTA L IZ EΑT h is mode of operation
is essential-
ly t he same as TIME
M A NU A L, ex-
cep t t h at t h e events counted
are t he
triggering eve
n ts ( p ulses) on C h an-
nel
Α rat h
er
t han t he internal cloc k .
F
or
t h is functio n th e position of t h e
FRE
Q
UEN CY M easures C H A NNEL Α signal
p
e
r i-

A VER AG ES lever switc h can be
Α

o d a nd converts res u lt to fre quency

used as αp ower-of-ten scaling fac
units .

tor, effectively i nc r easing t he num-
ber of dis p laya b le digits .
FUN CTIO N - α lever switc h used to select
t he follow-
i ng measurement and s p
ecial p ur p ose functions for
t he cou
n
ter :
PER IOD Α

M eas u res CHA NNEL Α
signal p
eri-
od and displays answer
i n units of
time .
R ATIO Β / Α

M easures and dis p lays t
he
ratio of
sig n al events occurring on C
h annel
Β to th e
signal events occ u rri n g on
C
h annel Α . T h e decimal p oint is ap-
propriately locate d for t he selected
n u m b er of averages ch osen for t he
C h annel Α signal .
PR O BE

Α p ro be com p ensation
function .
CO MP

T h is function allows
t he operator to
use t h e counter dis p
lay to ad j ust
t he fre q uency res p
onse of signal
pro b es . T he most
significant digit is
t h e in d icator
for α p ro be connected
to CHA
NNEL Α in p ut, t he least
sig-
nificant digit for αC HA NNEL
Β
p ro b e .
2-3

O pe r ati ng I n st r uctio
n
s-DC
509
Ζ - 4
R Α t1 ί 1 WA -
T iMFΑ - - Ε -
WIDTH Α -
E V B iliT5
ε ,
ιιι
s, α -
OW ΜΑΝ UΑ ! .
ΤΛίΑ L 11 Ε Α -
F ΙΡ #Ci! ύ fi :
` Q ρ U ΜΝΓ :
τ
Α-
Α k Μ
ΡμΟΒ F
ι
- ow
TE ST
Fig . 2-2 . DC 509 fr o n tpanel dis p lay, co n tr ols, a n d co nn ectors .