Wavetek 3000 Service manual

INSTRUCTION
MANUAL
MODEL
SIGNAL
3000
GENERATOR
WAvaTE
K
INSTRUCTION
MODEL
SIGNAL
GENERATOR
MANUAL
3000
Serial
.
/2_5
1
q
s
THIS IS
DOCUMENT
TOBEUSED
CONTAINSINFORMATION
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IN
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MANNER
RF
5808
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INFORMATION
IN
IN
THIS
WRITINGOF
2-88
DOCUMENT
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.
WARRANTY
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of
component
Transfermatic
life
such
warranty
factoryorservice
prior
This
warranty Wavetek, defective be
billed at
Wavetek either be
dangerousifmisused.Special liability breachofwarranty specific
reliable,
of
instruments
after
year
(except
Switch
of the
instrument.Wavetek's
instrument
when
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does
or
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as a
result
cost
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assumes
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instrumentshipped
recommendations
other
forth herein
no
conjunctionwith
secondary
Wavetek warranties, assume
date of
batteries)
assemblies,
which,inWavetek's
returnedtothe
centeristo
Wavetek
by
accordance
of misuse,
responsibility
chargesorconsequential
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Wavetek
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with
instructions
improper
other
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contractorotherwise
against
whichaclaimismade
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no
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or implied,
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This
manual
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descriptive
of the
WAVE-IEKModel
SCOPE
material
OF
THIS
3000
MANUAL
instructions
Generator
Signal
for the
installation,
operation,
main-
CONTENTS
SECTION
SECTION
SECTION
1
2
3
THEORY
3.3
3.4
3.5
3
3 3
3
3
.10
3
.11
3
.12
3
.13
3
.14
3
.15
GENERAL
1
.1
1
.2
1
.3
1
.4 OPERATION 2
.1 2
.2 2
.3 2
.4
2.5 2
.6
2.7
3
.1
3
.2
.6 .7
.8 .9
INFORMATION
INTRODUCTION SPECIFICATIONS
OPTIONS ACCESSORIES
INTRODUCTION
MECHANICAL
ELECTRICAL DESCRIPTION DESCRIPTION INSTALLATION OPERATING
OF
INTRODUCTION
OVERALLBLOCKDIAGRAM C315 C316
DPS2A
DELETED M9W
M10W M172
M29-1
M30 M31
M32 - MHz M33
M34
.
OPERATION
- METERBOARD
-
MODULATION
-
POWER
-
SWEEP
-
OUTPUT
-
SWEEP
FM
-
CRYSTAL
-
kHz
-
NARROW
-
WIDE
. . . . .
. . . . ...
. . . . .
.
. . . .
. . . . . .
INSTALLATION INSTALLATION
OF
FRONTPANEL
OF
REARPANEL
CHECKS
PROCEDURE
.
. . . . . . . .
BOARD
SUPPLY
OSCILLATOR
AMPLIFIER
DRIVE/DAC
REFERENCE
SOURCE
STEPS.. . . . . . . . . . .
STEPS..
OSCILLATOR
OSCILLATOR
. . . .
. . . . .
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. . .
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.
... .
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. ...
.
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LOCK
LOCK
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.
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. . ..2-4 . .
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..3-8 . .
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.
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.
.
.
. .
. .
1-1 1-2
1-4 1-4
2-1 2-1
2-2 2-2
2-5
3-1
3-1 3-9
3-10 3-10 3-11 3-12 3-13 3-14
3-15 3-16 3-17 3-19 3-20
SECTION
4
PERFORMANCE
4.1
4.2 4
.3
4
.4
4
.5
4.6 4
.7
4
.8
4
.9
4
.10
4
.11
4
.12
4
.13
4
.14
4
.15
TESTS
INTRODUCTION FREQUENCY FREQUENCY FREQUENCY OUTPUT
HARMONICS NON-HARMONIC RESIDUAL RESIDUAL
INTERNAL
PERCENTAM AM AM
FM FM BANDWIDTH
LEVEL
AM MODULATION
BANDWIDTHTEST DISTORTION
DEVIATION
. . . . . . . . . . .
RANGE
ACCURACYTEST
STABILITY
TEST
FM TEST
ACCURACYTEST
AND
RESOLUTIONTEST
. . . . . . . .
TEST
ACCURACY
. . . . . . ... . . .
TEST
TEST
TEST ACCURACY TEST
TESTS
. . . . . . . . . . .
. . . . . . . . .
. . . . . . . . . . .
FREQUENCYTEST
. .
. . .
.
. . .
TEST
. . . . .
. . . . . .
. . . . . . .
. . . . . .
.
. . .
. . . . . . .
. . . .
. . . . . . .
. . .
. . . . .
. . .
. . . .
4-1 4-2
.
4-3
.
4-5
.
4-5
.
4-11
.
4-12
.
.
4-14
.
4-15
4-16
.
4-17 4-19 4-21
4-22
.
.
4-23
CONTENTS
4
.16
4
.17
4
.18
DISTORTION
FM
IMPEDANCE RFI
TEST.. . . . . . ... . .
TEST
CONTINUED
TEST
. . . . . . . . . .
. . . . .
.
. . . . ...
. . " "
.
4-25 4-26 4-27
SECTION
SECTION
SECTION
SECTION
5
MAINTENANCE
5.1 5
.2
5
.3
5
.4
REPLACEABLE
6
6.1 6
.2
SCHEMATICS
7
7
.1
7
.2
7.3
7.4
8
MANUAL
8
.1
8
.2
8.3
INTRODUCTION
SERVICE CALIBRATION
TROUBLESHOOTING
INTRODUCTION
MANUFACTURER'S
INTRODUCTION SCHEMATICNOTES
ABBREVIATION
SCHEMATIC
CHANGES
INTRODUCTION MANUAL OPTIONS
...
INFORMATION
PROCEDURE
PARTS
INDEX AND
CHANGES
. .
. . . .
. . . . . . . . . .
.
. . .
. . . . . . . . . . . .
CODE
.
. . . .
CODE
OPTIONS
.
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. .
. . .
. . . .
. . .
. . .
. . . . . . . . .
.
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. . . . . . .
. . . .
. .
. . .
.
. .
. . " " .
. . . . .
. . . . .
. .
. .
. . . .
. .
. . "
5-1
.
5-1 5-3
.
5-7
6-1 6-1
7-1
"
.
7-1 7-2 7-2
8-1 8-1 8-1
INTRODUCTION
1
.1
The
Model
solid-state
the
frequency
The
output modulated tween
1
The front
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overall including
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instrument
SECTION
INFORMATION
capabilities
frequencies
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GENERAL
1
.2
SPECIFICATIONS
1
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RANGE READOUT RESOLUTION
ACCURACY
STABILITY
1.2.2
INFORMATION
Frequency
RF
OutputLevel
1
MHz
to
520
6
digit
1
kHz
CW andAM modes
FMx1 FMx100
CW
and
FMx1
lever/indicator
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3
months
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MHz
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POWER
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TOTALLEVEL
ACCURACYBREAKDOWN
1
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IMPEDANCE SWR
LEVEL
CONTROL
Output
RANGE
ACCURACY
Characteristics
+13
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Continuously with dicated
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Step
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frontpanelmeter
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to -7 dBm)
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HARMONIC
SUB-HARMONICS
Spectral
Purity
OUTPUT
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Nonedetectable
below
dB below
fundamental fundamental
from
from
10
520
10
MHz MHz
to
1
to
NON-HARMONICS
RESIDUAL
RESIDUAL
1
.2.5
FREQUENCY
AM
Amplitude
Internal
External
FM
Modulation
Fundamental
(MHz)
3
1
to
250
3
to
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post-detection
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bandwidth
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400 DC
required vide
350
to
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1
to
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to
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to 1000
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bandwidth
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thepeak
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(MHz)
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to
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600
control
INFORMATION
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(dB
fundamental)
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to
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kHz
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Hz
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above
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to
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RANGE DISTORTION
MODULATIONCONTROL
ACCURACY
1
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Frequency
FREQUENCY
Internal External
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ACCURACY
DISTORTION
Modulation
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a
Calibratedfrom
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and
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level
at
kHz
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500
GENERAL
1
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1
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OPERATING
OUTPUT
RFI
POWER DIMENSIONS
INFORMATION
Programmability
General
TEMPERATURE
CONNECTOR
Frequency
input
or
BCD-coded
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1.3:1
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Programming
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For are
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1
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1
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1
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Furnishedwithinstrument
Additional
Auxiliary
Low
ACCESSORIES
PowerProtection
RF
Output
Leakage
Accessories
Option
if
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are
accidentally
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whenusingoption
Option"4" signal nector.Normally
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Option of
Section
Instruction
Rear-panel Rack
Mount Programmers control
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available
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7
Service
max)
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provides
reduces
1
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Manual
PROGRAMMING
Kit,
for
of
selectedfrequencies
Series
GENERAL
or RF
applied
option
lA
or
a
fromarear
used
K108
single
3900 Kit,
to
the
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by a factor
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K004
INFORMATION
the
to
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panel
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pins
or GPIB
and
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dBm)
con-
2
.1
INTRODUCTION
This
lation
Wavetek
The installation, front lationchecks
2.2
2.2
sectionprovides
and
operating
Model
instructions
and
rear
MECHANICAL
.1
Initial
complete
instructions
3000 electrical
panel
and
Inspection
signal
consist
operatingprocedures
INSTALLATION
of
installation,
features,
instal-
for the
generator
mechanical
instal-
SECTION
2
OPERATION
and
Retain material
The
.
.
will replacement without ments
2
.2 .3
the
local
immediately
.
ZackMounting
Item
shipping
for the
representative,
or
repair
waiting
for
CONTENTS Qty
carton
carrier's
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of
damage
(K108)
or
for
your
claim
packing
inspection the
factory
either the
instrument,
settle-
PartNo
.
.
After
inspect to knobs, The erialshould necessary
2.2 .2 If
damaged and
representative
unpacking
the
connectors,
shippingcontainer
to
DamageClaims
the
instrument
in
either
the
external
be
reship
transit,
the
or
instrument,
parts
surface
and
saved
is
receivedmechanically
nearest
the
the
notify
factory
in
unit
visually
for
areas,
packing
case
.
the
Wavetek
in
damage
etc
mat-
it is
carrier
area
Indiana
A
(Insert)
B
(Side)
.
.
C
(Screw)
D
(Screw) Procedure Remove
Mount panel
the
screws
longer eration
:
the items
of
the
than
for the
2
ea
2
ea
8
ea
4
ea
(See
Figure
screws
A
and
instrument
provided
screwsC.)Repeat
other
from B
.
2-1) one
against
and
(Screws
side
B001-145 0001-146 HS101-808 HS101-810
side secure
of
the
the
the
panel
side
with
D
unit
.
are op-
.
Figure
2-1.
K108 Rack
Mount
OPERATION
2
.3
ELECTRICAL
The
instrument
volt
AC
selected the
rear
instrument, in
the
Rear
ponds
to
or
by a panel
the
INSTALLATION
operates
230
volt
SlideSwitch
.
Before
check
Panel
that
Fuse Holder
correct
from
AC
supplymains
the
value
FREQUENCY
I-SYO
MH
either
located
operating
fuse
for
-
mounted
corres­the
O
~
115
as on
the
se-
1007
ACCURACY
3700td0
-KHZ
lected volt
The
voltage,
AC
power
operate
mains
.
Instruments for
operation
less
specified
operation
.
5
KH
RMS VOLTS
and
from
.
0
supply
are
OU
dBm
i.e
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either
shipped
at
115
for
PUT
.,1.0
amp for
has
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50 or 60
volt
230
7
9
from
volt
amp
for
230
volt
designed
Hz
the
AC
60
AC
UNlE0LE0
a
115
AC
to
supply
factory
Hz
un-
or 50 Hz
a
.
MODULATION
VERNIER
400Hz
EXT
-
POWER
off
~~
WAvET
CW
AM
FM
V
iE
Figure
2
.4
DESCRIPTION
OF
FRONT
PANEL
AM
FM
4 3
z
I
0 0
90
50
model3000
2-2
VERNIER
\
a
RF
out
.
Front
Panel
SIGNAL
GENERATOR
0
2-2
Lever
Indicator
Switches
Select from
and
indicatedesired
1
to
520 MHz
witha1kHz
output
frequency
resolution
.
OPERATION
O2
AccuracyLamps
O3
Output
4O
Unlevel
LevelMeter
Lamp
Indicate and
AM
modes, ±(0
±(0
.001%
lamp
willflash
is
turned steady phase-locked dication light lock
identified looking light
Indicates in
VRMS
Indicates
not
light
indicates
loops
for the
.)
and
validwhen
frequency
.001%
+
45 kHz)
for
on
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indicates
and the
is
valid
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by
outputlevel
dBm
that
.
that
open
removing
corresponding
.
the
the
accuracy
in
FMx100
a
few
frequency
A continuouslyflashing
one
.(The
outputlevel
lamp is on
.±0
+
10
.Typically
seconds
normal
that
or
more
open
the top
over
.001%
kHz) in
after
operationa the accuracy
of
loop
cover
"module
a
10 dB
accuracy
.
FMxl
unit
thephase
in
CW
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the
power
is
in-
canbe
and
fault"
range
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O5
Attenuator
6O
Vernier
O7
AM/FMVernier
FrequencySwitch
Controls from+10to
is
calibrated
Controls range
Is
calibrated
tion mits precise mode
tively
1
kHz
manualamplitude
the
frequency
provides
the
modeswitch
vides
quency
FMxl
Selects frequencyicontrol,
modulation
.
and
switch
and the
or
up
change
and
the
outputlevel
theoutputlevelover
from
in
Ext
.
up
toa+5
FMx100 vernier,
and
-130
dBm
in
dB
from
O to
0
to
90%
AM
and
AM
and
frequency
Thevernier
and
switch
to
+6 dB
is
in
kHz
when
respectively
for
400Hz
external
over
a140
.TheAttenuator
and
VRMS
.
kHz
FM
5
AM
.This
FM FMxlor
frequency
vernier
in
amplitude
the
or up
mode
the
manual
modulation
settings
switch
also
AM
to
and1kHz
peak
control
FMx100
serves
control
.Thevernier
change
and +500
switch
.
amplitude
dB
range
dial
an
11
devia
per-
with
respec-
in
400
as
with when
also pro-
kHz
fre-
is
internal
.
dB
the
Hz,
a
in
or
O9
Ext
Modulation
nal for
V peak-to-peak
dance
A
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AM
calibrates
full
.
signal
input and
acceptsaDC to 20
a
DC
signal
the
voltagewill
scale
Therefore,
into
600
to
25
into
AM/FM
vernier
calibration
a1volt
ohms
kHz for
a
600 ohm
result
will
kHz
FM
full
in
of
peak-to-
result
sig-
.
A
impe
scale
a pro-
the
in
2-3
10
.
AM/
a
OPERATION
(D
continued
Ext
ModeSwitch
RF
out
Power
Switch
WARNING TO
PREVENT
WARNING FOR FIRE
SAME
ELECTRIC
COVERS.NO
INSIDE.REFER
PERSONNEL
:
CONTINUED
TYPE
AND
SHOCK,DONOT
USER
SERVICING
PROTECTION
ONLYWITH
REPLACE
RATINGOFFUSE
SERVICEABLE
TO
AGAINST
THE
full
tion
FMx100 Selects
Type the
RF
Provides
scale in
or
CW, AM,
connector
N
output
calibration
FMxl,
10%
AC
power
a
50
amplitude
FMxl
provides
signal
to
kHz
.
of
or
the
Hz
500
peak
deviation
modulation
FMx100
a
connection
power
peak
operation
supply
devia-
in
.
AM
for
in
.
.
2
O
.5
DESCRIPTION
Switch
AC
Input
Line
115/230
Fuse
50/60
OF
Hz
REAR
V
PANEL
Figure
2-3
Rear
.
Selectseither
supply ment Panel value
1 .0
amp
volt
3
prong
mains
Panel
115
mains
checkthat
FuseHolder
fortheselected
AC
.
.
for
AC
.
115
plug
Before the
volt
operating
fuse
mounted
correspondsto
voltage
volt
AC or0.5
provides
AC
or
connection
230
volt
the
instru-
in
the
the
correct
.
ampfor230
to
AC
Rear
AC
OPFRATION
Programming
O5
Modulation
2.6
INSTALLATION
The
following
termine
properly
ibration in
other it is operating specifications,refer
on
2.6.1 Verify
is
matched
and
(See Turn "ON" panel
that
.
of
sections
determined
the
back TurnOn
that
to
that
Section2.3
position
the
front
accuracy
the
Performance
properly
procedure
the
the
of
the
the
proper
.
lights
Test
CHECKS
instrument
instrument
of
that
title
the
power
line
Electrical
panel
One
Point
is
testing
this
the
or is
the
to
page
transformer
voltage
fuse
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power
or
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willbe
used
operating
is
and
contained
are
manual
unit
meeting
not
warranty
.
primary available, installed
switch of
the
illuminated
to
.
is
to
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not
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Providesconnection
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Monitors
lation
If
.
.
.
indicating
warmup
2.6 .2 Set the
as
follows
Output
ModeSwitch
Frequency
AM/FM
Vernier
Attenuator
for
internal
is
ControlAdjustment
Model
Frequency
Vernier
an
needed
:
Switch
or
external
operating
for
3000
programming
AM
condition
following
the
frontpanel
10
MHz
(Lever
cator
010..000) CW
1
kHz
0
(Down
Full
CW
0
dBm
of
or
FM modu-
.No
checks
controls
switches
.
Position)
fre-
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indi
to
NOTE
SCOPE
VERTICAL
BNC
TEE
SO
SZ
LOAD
MUST
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BE
HIGH
FREQUENCY
Figure 2-4
OSCILLOSCOPE
.
Test
(GREATERTHAN
Setup
10
MHz)
2-5
OPERATION
2
.6 .3
RF
Output
Check
Connect
2-4
.
0.9V must
p-p
be
The
the
(a
used
equipment
10
MHz signal
high
for
as
frequency these
checks)
shown
must
beat
oscilloscope
in
.
Figure
least
Figure 2-6
.
FM
Modulation
Figure
2.6 .4 Switch
AM/FMvernier
point played to-valley
.45 2-5)
2
.6.5
Move
position
iod 2
.6.6
Switch the that
play
AM
Modulation
the
Verify
.
on
the
V
andaperiod
.
AM Modulation
the
frequency
.
is
2.5ms
FMxl
the
AM/FMVernierup
oscilloscope
the
(See
Figure
2-5
mode
voltage
switch
up to
that
oscilloscope
Verify
. Check mode
AM
.
Check
the 50%
the
difference
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Check
switch the
switch
and
2-6)
.
Modulation
(1000
to
AM
AM
envelope
showsa
.(See
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to
AM
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to
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down
shows
Hz)
.
Move
modulation
peak-
of
about
Figure
Hz)
the
400
.Move
.Verify
FM dis-
an
the
dis-
Hz
2
.6 .7
Switch repeat
2
.6 .8
Leaving positionplace
the
the an
scope 2
.6
Switch tion
in light
2.6 Switch
that controls
FMx100Check
the
mode
the
above
FrequencyVernierCheck
the
Vernier
AM/FMVernierfrom
increase
.
.9
.
output
.10
the
position
Vernier
the
mode
Verify
from
amplitude
may
come
AttenuationCheck
the
mode
output change
mode
the
in
frequency
Output
0
to 50
switch
check
switch
frequency
.
switch
that
.
on
during
switch
vernier
the
to
FMx100
.
in
the switch
Verify
0
Check
moving
shows
(NOTE:The
amplitude
that
to
5
on
the
to
theAM posi-
an
this test
to
CW
and
attenuator
and
FMx100 moving
kHz
shows
oscillo-
AM/FM
the
increase
unlevel
.Verify
of
the
in
.)
2-6
OPFRATION
signal
The
2.7
No
beyond stallation
2.6.
perform
the
warmup
2.7 .1
Verify mary
available installed Installation switch
accuracy
indicating NOTE lights This onds refer title to be
specifications,
ately, required
NOTE
transceivers, to
applied Damage circuitry pens
2
.7 .2
Select six
front 520 MHz can
resolution
displayed
instrument
OPERATINGPROCEDURE
preparation
completion
To
insure
as
stated
instrument
before TurnOn
that
is
matched
and
"ON"
lights
:A
.If
:Whenworking
keep
.
Lever
flashing
indicates
should
to
thewarranty
page
.If
used
otherwise
.
voltage
to
may
occur of
Frequency
the
panel
.
on
the
is
now
for
operation
checks
the
(See
.Turn
.One
an
cease
the
to
the
etc
the
the
frequencydesired
Indicator switches
.
A frequency
be
that
in
should
using
power
to
that
Section
or
will be
operating
an
in
flashing
the
extreme
it
a
.,
or RF
RF
to
the
Model
Selection
selected
contained
withactive
ready foruse
of
the
the
Model
the
specifications,
have
.
transformer
the
the
proper 2
.3
the
more
indication
unlocked
a
matter
does
on
the
unit
can
be
two
hour warmup
care
output
should
power
output
3000
is limits
between with
oscilloscope
is
required
initial
in
Section
3000
a
two
line
front
usedimmedi-
voltage
fuse
Electrical
panel
frontpanel
illuminated
condition
on
condition
of
not
cease,
back
if this
of
not
going
of
circuits,
be used
from
being connector attenuator
hap-
with
on
1
a
1
in-
will
hour
pri-
the
sec-
the its
the
the and kHz
is
is
2,7
. .
. .
.
.3
OutputLevel
Set
the
output
to
the
desired
continuously
-137 attenuator equals
dBm output
imum ceeded indicating
2.7 .4 Set
quency modulation nier depth
2
CAUTION ±10
to
nector
circuitry Set
quencyswitch
V nal
calibrates The
set input
NOTE
taken level
unlevelcondition
cases, cause
the This PINdiode causean
lation
.7
.5
the
p-p
modulation desired
.The
RF
dBm
range
the is
as
long
does
output
the
unlevel
AM
Modulation
the
mode
switch
to
indicate
.
AM Modulation
:
Input
VDC
or 10 external or
damagemay of
the
mode
signal
upper
is
20
:
When
not
to
or
excessive
a
high
the
unlevel
vernier
is
caused
leveler
increase
added RF possible
as
not
level
an unleveledcondition
switch
rate
the
switch
into
the'AM/FM
modulation kHz AM
exceed
Selection
attenuator
level
adjustable
.The
to
the
output the
to
.
VRMS
to
.
modulating,
%
by
.NOTE
at
peak
exceed
.If
light
to
either
Adjust
the
desired
voltages
should
modulation Model
to
external
600
input
frequency
the
distortion
can
of
AM modulationmay
light
control
the
which
in
and
.
The
output
over
level shown
meter
levels
of the
this
will
-
Internal
AM
-
External
occur
3000
AM
ohms
connector Vernier
depth
+13
exist
to is
bottoming distortion
indication
:
the
+13 dBmmax-
level
illuminate
and the
400
or 1000
the
AM/FMver­modulation
greater
not
be input to
.
and the
.
Apply
to
the
can
limit
care
dBm
.In
come
at
in
vernier
a
+13
on
AM
modu-
above
modulated
is
ex-
.
fre-
than
applied
con-
internal
fre­a 10
Exter
.
This
control
then
of
this
must maximum
and
some
on
when
minimum
of
the
turn
can
.If
is to
the
+3
Hz
.
be
be an
.
2-7
OPERATION
this
is
the attenuationand control
light
2.7.6 Set
and the
Adjust
peak
2.7 .7 CAUTION
t10 VDC to nector
circuitry
Set and the Apply
the
This
trol
set
quencylimit
toward
should
FM Modulation
the
modeswitch
frequency
the
deviation
FM
:
or
the
external or
the
modeswitch
a 1OVp-p
external
calibrates
.The
.For
then
AM/FM
Modulation
Input
10
VRMS
damage of
the
frequency
modulation
desired FM modulation
is 25
case,
maximum
vernier
.
voltages modulation
.may
Model
signal
the
10
dB of RF
the .
The
.
Internal
FMxl
or
or 1000 Hz
to
the
External
turn go
to
add
out
-
to
400
­greater
should
not
be applied
input
occur
to
switch
3000
FMxl
into
input
to
.
to
600
connector
or external
AM/FMverniercon-
deviation
peak
the
upper
kHz
.
fixed vernier unlevel
FMx100
desired
than con-
internal
FMx100
ohms
canbe
fre-
to
2.7 .8
Switch FMx100
to
output
in
the
.
position
2.7 .9 Switch
tion
Using
output enables obtained
2.7
.
Frequency panel
.
8-4-2-1 connector See identification in
VernierControl
the position
Vernier
.
control,
positive
a
xl
position
.
Vernier
the
mode
and
the
the
AM/FM
amplitudecan
more
over
Programming
.10
is
input
BCD
is
Figure
parallel
mode
switch
and the
Using
frequency
direction
or
Control
switch
frequency
than
portions
programmable
connector
contact
supplied
2-7 for
.
with
the
Indicatorswitches programming
switches
panel
Rear plemented
is
should
BCD
by
referring
used,
programming
FM
frequency
the
500 kHz
switch
vernier
be
20
mW
closures
pin
These
front
.If
indicate
Position
to
the
AM/FM
can
up to
in
-
AM
Position
to
the
to
control
varied
of
of
.
power
the
via
set
by
.
with
each
location
connections
panelLever
the
rear
the
frontpanel all canbe
Table
to
FMxl or
switch
vernier
be
varied kHz
5 the
AM posi­Vernier
It
to
band
a
rear
standard
mating
A
unit
panel
zeros
2-1
in
x100
.
the
also
be
.
. and are
.
im-
.
33 29
25
21
17 13
9
5
Figure
2-8
2-7
PIN
MOD
T.P
7
.3V
.
Pin
Location
1 2
3
4
5
6
7
8
9
10 11
12 13 14 15 16 17 18 19
20 21
22 23
24 25 26 - 31 32
33-35 36
&
Identification
CONNECTION
N.C. 400 200
100
80 40 20 10
.08 .04 .02 .O1
.
oo8
ground
N.C.
7.3V N.C
MOD.T.P.
100's
8 4
1's 2 1
.8 .4
.2 .1
.O1's
.001's
.
TABLE
Logic Logic
2-1
"0" "1"
.
PROGRAMMING
Switch
Open
Ground
TTL
>2 <0
.2V .4V
3.1 Section
analysis brief the contain each
For
subassemblies, in
3.2
TheModel
controlledoscillator locked havebeen resolution
Thediscussionwill basic scribehow vide
3.2 This
RF is
amplified, lated
Refer
of
phase RF
The twoUHF outputs
erodyned
INTRODUCTION
3.2presents to
enable
overall
instrument
more
subassembly actual
Section
OVERALL
loops
signal
the
additional
.1
Basic
discussionbriefly
is
generated
controlled,
.
to
Figure
the
basic
locking
GENERATION
RF
output
oscillators
of
in
view
.
detailed
wiring
7
of BLOCK
3000
is
and
added
.
generator
the
Signal
also
leveledand
3-1'
signal
.
frequency
the two
the
mixer
.
refer
the
essentially
for the
phase-locked
and
a
block
the
reader
of
the
Sections
descriptions
of
the
to
the
manual
DIAGRAM
to
which
a
crystal reference
highfrequency
first
accuracy Generator
how how
for
and
oscillatorsare
dealwith
then
describes
its the signal
amplitude
a
block
generator
is
a mixer
.Thedifference
to
operation
3
.3
chassis
schematics
.
a
it
will
loops
.
frequency
without
generatedby
diagram
get
-3.15
and
voltage
phase-
the de-
pro-
how
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modu-
diagram
.
The
het
of of
is
a
THEORY
frequency output
The are their
Oscillator
The WideOscillator
over Narrow Narrow
RF FREQUENCY
The by programming
Wide
tor front panelFREQUENCY
BCDoutput verted
grams This
mately
RF
The
stage, output leveling lifier
The Error
Attenuator peak This
reference of
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changes Amp
a
DC
amplifier
frequencies
controlled
varactor diodes
a
range Oscillator frequency
RF
output
Oscillator
is
ultimately
to the
analog
3
AMPLIFICATION
RF
power wide-band
is
.
Leveler
Amplifierand
of detected
Error
the
the
until
level
OF
is
amplified
byDC voltages
yields
from
CONTROL
frequency
of
these
an
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oscillator
signal
MHz accuracy
is
maintained
system
includesaMonitor
.
The
the
output
level
by
the
Amp
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inputlevel
the
monitored
equal
SECTION
OPERATION
and fed
.
of
these
.
a
single
can
the
frequency
to
520
.
the
frequency
.
TheWide Oscilla-
controlled
switches
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