Global Specialties 4001 User manual

Tue
4OOl
UnaavARrABLE
PutsE aENERATIR
Operation
Manual
1486HighlandAvenue,
Unit2
Cheshire,
CT06410
(203)27
2-3285 FAX:
(203)27
2-4330

WARRANTY
GlobalSpecialties@warrantsthisdevice
to
be free from defectivematerial or workman-
shipfor aperiod of onefull yearfrom thedate
of originalpurchase.
- GlobalSpecialties@
under this warranty is
limited to repairing thedefective
device
when
returned to the factory,
shipping charges
pre-
paid, within one year from date of original
purchase.
Units returned to GlobalSpecialties@
that
havebeen
subject
toabuse,misuse,
damage
or
accident,
or have
been
connected,installed
or
adjusted
contrary
totheinstructions
furnished
by Global Specialties@,
or that havebeenre-
paired by unauthorizedpersons
will not be
covered
bv thiswarrantv.
Global
Specialties@
reserves
the
righttodis-
continue
models,
change
specifications,
price
or designof this deviceat any time without
notice and without incurring any obligation
whatsoever.
Thepurchaser
agrees
to assume
all liabili
tiesforany
damages
and
/ orbodily inj
urywhich
mayresultfromthe use
ormisuse
of
this
device
by thepurchaser,
hisemployees,
or agents.
This warranty is in lieu of ali representa-
tionsor warranties
expressed
or implied and
no agentor representative
of GlobalSpecial-
ties@
isauthorized
toassume
anyother
oUtiga-
tioninconnectionwiththe
saleand
purchase
of
thisdevice.
FACTORY
SERVICE
AND
Global
Specialties@
will serviceandrepair
thisinstrument
free
of charge
for aperiodof onefull
year,
subjecttothewarranty conditions
above.
Toobtainareturnmerchandise
authorization
(RMA) required
for allreturns,
phone
our
Customer
ServiceDepartment
for anRMA andall shippinginstructions:
Tel.[phone]
or write:
GLOBALSPECIALTIES
1486HighlandAvenue,Unit2
Cheshire,CT06410
[phone]
FAX:
[phone]
ATTN: CUSTOMER
SERVICE
DEPARTMENT
BREADBOARDINGSOCKETS
LIFETIME
GUARANTEE
All Global
Specialties@
breadboarding
socketsare
guaranteed
for life. If asocket
everfailsto
meetyour requirements,
return it and we will replace
it,
NO QUESTIONS
ASKED.
Specifications
subjecttochange
without notice.
@
and TM trademarks are the property of INTERPLEX ELECTRONICS, INC., New Haven, CT.

TABLE
OF
CONTENTS
SPECIFICATIONS.. ..PAGE
2
INTRODUCTION..... .PAGE
4
DESCRIPTION....... ..PAGE
4
LOCATION
AND
DESCRIPTION
OF
OPERATING
CONTROLS............PAGE
5
CHECKING
OUT
THE
4OO1 .....PAGE
9
APPLICATIONS..... ...PAGE
14
CIRCUIT
DESCRI
PTION.......
REcALIBRATIoN
PRocEDURE
AND
;usE
nepLACEMENi............
B1BE
??
CIRCUIT
SCHEMATIC.......... ...PAGE
27
SERV|CE
AND
WARRANTY
tNFORMAT|ON..........................................pne
eze
LIST
OF
ILLUSTRATIONS
FIGURE
1. Location
of
Operating
Contro1s............. PAGE
5
FIGURE
2. Run
lMode
and
com[lemented
waveforms.............. pAGE
5
l99l! q Trig
Mode
Waveforms.............. ............PAGE
6
FIGURE
4. Gate
Mode
Waveforms.............. ......,...PAGE
6
FIGURE
5. One-Shot
Mode
Waveforms.............. ...PAGE
6
FIGURE
6. Run
Mode
and
Squared
Waveforms.. ..PAGE
7
FIGURE
Z. Checkout
Configuration.......... ..............PAGE
9
FIGURE
8. Waveforms.............. .............PAGE
10
FIGURE
9. Checking
Trigger
and
Gate
Modes..... .PAGE
14
FIGURE
10.
Missing
pulse
Detector
Apptication.............. .......pAGE
15
II9yl_E11 Amptifier
Frequency
Response
Test......... ..........pAGE
17
FIGURE
12.Transmission
Line
Test... ...PAGE
1g
FIGURE
13. Scope
Waveform
Patterns-Transmission
Line
Testing.......pAGE
20
FIGURE
14.Case
Disassembly
and
Assembty .......PAGE
25
FIGURE
1s.Circuit
Schematic........
. . ..........................:.
.pAGE
27
LIST
OFTABLES
IlPf_E
1.
Typical
square-wave
patterns
and
Interpretation...................pAGE
16
TABLE
2.
Power/Output
Retationships....................:.....
..........pAGE
17

Frequency
Range:
Pulse
Width
and
Spacing
Controls:
Duty
Cycle:
Accuracy:
(Pulse
Width
and
Spacing)
(Amplitude)
Jitter:
Operating
Modes
(pushbu
tton
selectable)
Run:
Trig:
Gate:
One
Shot:
Square
Wave:
4OO1
SPECIFICATIONS
0.5
Hz
to5 MHz
1O0nsec.-1sec
in
7overlapping
ranges.
Independent
variable
width
and
spaiing
controls.
Two
concentric,
single-turn
verniers
provide
continuous
adjustment
between
ranges.
107-to-1
range,
cont.
adjustable
+5%
typical,tlso/o
@
max
vernier
setting.
+5o/oofcontrol
setting.
Less
than
0.1%+S0psec.
0.5
Hz
to5 MHz,
frequency
settable
through
pulse
width/spacing
controls.
DC
toapproximately
10
MHz
from
external
source.
Generator
starts
synchronously
with
leading
edge
ofgate
signal-"One
Shot"
pushbutton
can
manually
activate
gate
in
this
mode.
Enables
manual"One
Shot"
pushbutton.
Square
wave
may
beobtained
atthe
outputs
by
depressing
"Square
Wave"
pushbutton.

Complement:
Trig/Gate
Input:
Output:
Var
Out
TTL
Out:
Sync
Out:
Power:
Operating
Tem
perature:
Size
(WxHxD):
Weight:
Q{guts may
beinverted
by depressing
the
"COMPL"
pushbutton,
without
losing
sync
time
reference.
NOTE:
pulse
spacing
controls
not active
during
"Trigger"
and
"One-Shot"
modes.
TTL
compatible
input,
DC
coupled
logic
input:
pulses>2.4V
peak>4Onsec
wide.
Sine
wave
input:>1.7V
RMS<1OMHz.
Input
impedance:
400Q
max.
input:
r10V.
Amplitude,
0.S-10V,
adjustable
via
single
turn
vernier;
rise/fall
time
3Onsec;
impedande,
50CI
Fan
out,40
TTL
loads;
sink,
64mA
atO.gV
maximum;
rise/fall
time:
less
than
2Onsec.
Amplitude
2.4V
minimum;
fan
out,1O
TTL
loads;
sink,
16mA
atO.8V
maximum;
riseifall
time,
less
than
2Onsec;
sync
pulse
lead
time,
greater
than
2Onsec.
105-125VAC,
50/60
Hz
220-240VAC,
50i60
Hz(Optionat)
0"Cto50"C
(calibrated
at 25"
C t55" C).
32"Fto 122"F
'(calibrate
dal 72"F*9" F).
10"
x3"x7" (254
x76
x 178mm).
2.2tbs.(1
kg)

INTRODUCTION
The
Global
Specialties
4001
Ultravariable
Pulse
Generator
is
a reliable
low
cost
pulse
Generator.
lts
uncomplicated
rugged.design
and
high
quality
components
ensure
long
and
dependable
service.
The
4oo1
offers
these
feaiures:
Separate
TTL
Output
AVariable
Output
from
O.5V
to10V
5QOutput
lmpedance
Pulse
Width
Range
from
lOOnsec
tolsec
DESCRIPTION:
The
Model
4001,
primarily
designed
as
apulse
or
clock
source,
is
compatible
with
lC
and
discrete
component
circuits.
lt
also
finds
application
as
a syste. sieppet
(One-
Shot
Mode),
gated
oscillator
(Gate
Mode),
orprir" stretcher(Tiigger
Mode).
With
a
minimum
ofadjustments,
the
4oo1
can
also
serve
asa missirig
illse detector
ora
frequency
discriminator.
The
output
can
be
complemented
or
converted
to
a square
wave
with
a push
ofthe
button.
The
Model
4001
offers
two
Simultaneous
Independent
Outputs
(TTL
and
Variable)
with
rise
and
fall
times
less
than
30nsec;
2Onsec
TTL
compatible
leading-edge
Sync
pulse
output'
There
are
independent
pulse
width
and
pulse
spacing
controls
(both
selectable
form
lOonsec
to lsec)
eliminating
incompaiible
frequenJy
ano
pulse
width
settings.
Also
on
the
panel
arefour
pushbutton
selectable
operatind
mooe
switches
marked
(Run,
Trigger,
Gate
and
One-Shot).

LOCATION
AND
DESCRIPTION
OF
Refer
toFigure
1
for
thelocation
ofall
operating
referred
tothroughout
the
text.
NOTE
All
pushbutton
switches
are
push-to-activate
switches.
1 2 34
5
'13
12 11 1098
FIGURE
1.
Location
of
Operating
Controls
POWER
Switch
and
LED
Indicator:(1)
MODE
Switch
(2)
NOTE
The
four
Mode
Switches(2)
are
mechanically
interlocked
allowing
only
one
switch
to
be
activated
at
atime.
They
are
designated
RUN,
TRIG
ano
ofr-sHor.
RUN:
In
the
Run
mode,
the4OO1
is
self-oscillating.
All
external
inputs
are
disconnected,
and
all
timing
controls
arefunctional.
(See
figure
Z)
aOpr3^.
20
nsec
1 l* { z.a
VMin.
SyncOut n n n n :n n
I Run
TTLor t-t t-l f-l f-l l-l l-l Mode
Var
Out
TTL
or Complemented
Varour --l l-'l f-] l-] f-l l-l l-
FIGURE
2.Run
Mode
and
Complemented
OPERATING
CONTROLS
controls.
These
numbers
will
be
*rrrorx l-E'|.- -.- -', 5, 1.f. -, 19, /
;Ai.ffi:/n
[( | l]-- aoor eulse GENERAToer ,\-/..
\lZ o^rt[.rc * tY* ar rr! out va. ovr

TRIG:
In
theTrig
mode,
the
4001
outputs
produce
asynchronouspositive
going
output
pulse
for
each
positive
input
trigger.
The
output
pulse
width
is
adjusted
byihe pulse
Width
and
Width
Vernier
controls.
The
output
puise
isinitiated
by
the
posltiu"-.dge
ofthe
input
trigger.
When
the
mode
switch.is
in
theTrigger
mode,
the
pulse
Spacing
and
Spacing Vernier are inactive. (See Figure B) ve' i"v-Y' rrrv ' v'vv
Trig
TTL
or
Var
Oul f
,,,n
Itvtode
FIGURE
3.Trig
Mode
Waveforms.
GATE:
In
the
Gate
mode,
the
4991
outputs
produce
trains
ofpulses
for
the
duration
of
the
appliedgallng
signal.
The
leading
edge
of
the
gating
signal
starts
the
output
pulse
!ai1 The
first
pulse
in
the
train
ii synchronized'witti
teioing
edge
of
the
gating
signat.
Both
thePulse
Spacing
andPulse
wiotn
controls
the
program
pulse
train
parameters.
lf
the
gating
pulse
ends
while
an
output
is
present,
thelaitpulse
will
be
complemented.
(See
Figure
4).
I 2.4VMin
lcate
.Irloi l;il'"
Var
Oul With
Lead
Edge )
of Gate
Signai
FIGURE
4.
Gate
Mode
Waveforms.
ONE-SHOT:
In
the
One-Shot
mode,
themode
switch
is
latched
and
the
One-Shot
pushbutton
(-s)'when
pressed,.
initiates
an'outputpulse.
Pulseparameters
are
set
by
the
pulse
Width
(11)
and
Width
Vernier
controls.,Pulse
Spacing
and
Spacing
Vernier
controls
are
not
active.(See
Figure
5)
Pushbutton
oneShot
---r,/ oepressed lone-snot
.Irlol
Var
out -l
Figure
5.One-Shot
Waveforms.
6
l0 VMax

SQUARE
WAVE:(3)
whenthis
button
isdepressed
the
output
isconverted
toa square
wave.
The
output
now
changes
state
with
every
positive
edge
of
the
original
"piogrammed"
waveform.
This
divides
thefrequency
ofthe
signal
Oy
two.
Allinputs
and
controls
are
still
functional.
(See
Figure
6)-
TTL
or Run
Mode
Var
out i-t_i-i_ro*r"o
FIGURE
6.Run
Mode
and
Squared
Waveforms
COMPLEMENT:
(a)
When
this
button
is
depressed
the
TTL
and
Variable
outputs
are
automatically
complemented.
Allinputs
and
controls
are
still
functionat.
1net.
Figure
2)
ONE-SHOT
MODE
SWTTCH:(5)
See
MODE
switches(2)
for
details.
AMPLITUDE
CONTROL:
(6)
The
AMPLITUDE
control
adjusts
the
amplitude
of
thevottage
at
theVAR
OUTBNC
connector
from
0.5
Volts
to10
Volts.
VAR
OUT:
(7)
The
VAR
OUTBNc
connector
provides
a convenient
means
for
interconnecting
the
generator
output
toits
destination.
The
VAR
OUT
signal
has
a rise
andfall
time
of
3Onsec
and
output
impedance
of
50
ohms.
TTL
OUT:
(8)
The
TTL
Output
BNC
connector
is
fed
byfour
TTL
gates
inparallel,
providing
aTTL
fanout
of40.
Rise
and
fall
times
are
less
than
20ns6c.
Both'TTL
and'vAR
ouT pulses
are
derived
from
the
same
internal
source
and
are
svnchronous.
SYNC
OUT:
(9)
The
SYNC
OUT
BNC
connectorproduces
an
output
pulse
2onsec
wide
and2onsec
in
advance
of
themain
output
pulses.
The
Sync
pulse
amplitude
is
a minim
um
ol2.4
Volts
and
can
drive
10
TTL
loads.