Larcan MXI1503U Television Broadcast Translator User Manual Related Publications

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TECHNICAL SERVICE MANUAL
TRANSMITTER GENERAL INFORMATION
LARCAN INC.
228 AMBASSADOR DRIVE
MISSISSAUGA, ONTARIO
CANADA L5T 2J2
PHONE:
(905) 564-9222
FAX:
(905) 564-9244
EMAIL:
techservices@larcan.com
PUB07-07 Rev 2
PUB07-07
GENERAL INFORMATION
INTRODUCTION.............................................................................................................................................................. 1
1.1
1.2
1.3
PRODUCTION CHANGES ................................................................................................................................................ 1
DISCLAIMER .................................................................................................................................................................. 1
CONTACT INFORMATION ............................................................................................................................................... 1
PREFIX NUMBERS.......................................................................................................................................................... 2
LARCAN PARTS, ASSEMBLIES, ASSEMBLY DRAWINGS AND SCHEMATIC NUMBERS ............................ 4
3.1
3.2
3.3
3.4
3.5
3.6
VENDOR STANDARD PART NUMBERS ........................................................................................................................... 4
LARCAN NUMBERS FOR PARTS, ASSEMBLIES AND DOCUMENTATION ......................................................................... 4
LEADED RESISTORS ...................................................................................................................................................... 4
SURFACE MOUNT RESISTORS 1/4W AND LESS .............................................................................................................. 5
SURFACE MOUNT CAPCITORS ....................................................................................................................................... 5
PARTS LISTS ................................................................................................................................................................. 6
SAFETY PRECAUTIONS ................................................................................................................................................ 7
4.1
4.2
4.3
4.4
4.5
BERYLLIUM OXIDE WARNING ....................................................................................................................................... 7
OTHER TOXIC MATERIALS ............................................................................................................................................ 7
DANGEROUS VOLTAGES ............................................................................................................................................... 7
SWITCH TO SAFETY ....................................................................................................................................................... 8
DISCOURAGE PESTS ...................................................................................................................................................... 9
APPENDIX A ........................................................................................................................................................................... 10
ABBREVIATIONS USED IN LARCAN INC. DOCUMENTS .............................................................................................................. 10
PUB07-07 Rev 2
ii
GENERAL INFORMATION
INTRODUCTION
The transmitter technical details are described in this manual. The Manual is provided on this CD-ROM in PDF format.
The complexity of the equipment and the amount of information requires this information to be presented in several
publications. These publications are gathered into a single Volume to comprise the transmitter manual. The list of
publications and their revision numbers is provided in separate PDF file TSM20-xxxG1 file. Mechanical assemblies are
documented in this manual only as far as necessary to describe access to electronic subassemblies, such as circuit
boards, thus, some mechanical items might be found only in a parts list. Those having assembly drawings in this manual
also have a corresponding parts list. Numbers in circles on the assembly drawings refer to items identified as the parts list
line or item number.
1.1 PRODUCTION CHANGES
From time to time, it becomes necessary to make changes to the equipment described in this manual. Such changes are
usually made either to provide improved performance or to accommodate component substitutions necessitated by
vendor product availability. A revision number might follow the model or group number marked on the nameplate, chassis,
or circuit board; or on a parts list. In a parts list, an "R" a number indicates the parts list revision status. This revision
number should be quoted whenever contacting LARCAN Customer Service, especially if renewal parts are needed.
1.2 DISCLAIMER
All material in this manual is copyright © LARCAN INC. as of the date of publication. Reproduction in whole or in part in
any form for any purpose other than the exclusive use of the equipment owner without prior written authorization from
LARCAN INC. is prohibited.
Trademarks are the property of their respective owners and are mentioned in the text for discussion purposes only;
any such mention is not an endorsement of the trademark or its owner. Parts lists may also contain trademarked
vendor names as an aid in the procurement of spare parts.
Every effort has been made to provide as much information about the equipment as possible and to ensure accuracy,
however, LARCAN INC. assumes no responsibility and disclaims all liability for damages resulting from the use of this
information or for any errors or omissions. These instructions do not assume to cover all possible details or variations
in equipment nor to provide for every possible contingency to be met in connection with its installation, operation, or
maintenance. It is assumed that fully competent technical personnel will be responsible for the installation, operation,
maintenance and repair of the equipment.
1.3 CONTACT INFORMATION
If you need further information or if you require replacement parts, please contact us.
LARCAN INC.
228 Ambassador Drive
Mississauga, Ontario, Canada L5T 2J2
Phone: (905)-564-9222, FAX: (905)-564-9244
EMAIL techservices@larcan.com
Or;
LARCAN USA Inc.
1390 Overlook Drive
Lafayette Colorado
80026 USA
Phone: (303)-665-8000, FAX: (303)-673-9900.
PUB07-07 Rev 2
GENERAL INFORMATION
PREFIX NUMBERS
Prefix Numbers assist in identifying assemblies and subassemblies by their physical location in the overall transmitter
model assembly. Each transmitter model has an associated Prefix List, which provides an index of Prefix Numbers
identifying the Sub-Assemblies in each Cabinet and in large assemblies.
Every sub-assembly of the transmitter on its own is identified by a nine-digit assembly number (e.g., 21B1234G1). This
assembly number accurately identifies the item, but bears no information on its own regarding its place in the
transmitter and can be cumbersome when identifying functional blocks for documenting the transmitter. To assist in
this matter, the Prefix Numbering of subassemblies indexes the major components into their related cabinets and into
groups of related assemblies. The following paragraphs are adapted from LARCAN Document Number 11A1886,
which outlines the basic system of Prefix Identification
A label attached in the most visible location identifies large Assemblies. Cabinets have labels attached to the
rear, top of cabinet frame. Other Large Assemblies have labels attached in the front.
Cx
Control Cabinet # x
Ax
Amplifier Cabinet # x
Tx
Traplexer # x
Fx
Filter # x
Px
Patch Panel # x
Ox
Optional Assembly # x
Ex
Exciter # x
Mx
Modulator # x
Ux
Upconverter # x
Sx
Switch (coaxial, contactless etc.) # x
Lx
Load RF # x
CRx
Combiner # x
Dx
Directional Coupler/Probe Section # x
Xx
External components (heat exchanger, power supply, AC distribution panel) # x
Major Subassemblies inside cabinets or on other large assemblies are identified by numbers only, which are
multiples of 10. For example:
10
Contactor Panel
20
AC Distribution Panel
30
Power Amplifier Housing
40
Control Unit
Small Subassemblies inside a major subassembly are identified by integer numbers other than multiples of 10. For
example:
21
PC Board # 1 in AC Distribution Panel
22
PC Board # 2 in AC Distribution Panel
Individual component identification is possible at every level. Labeling clearly with a single label does physical
identification. Only Large Assemblies will have label “Xn” (X=Letter, n=number) or "X". All other assemblies and
components shall have label “n” (n is a number). Each “Xn” or “X” has a square frame outline to denote that it is a
prefix number. No "PFX" or "PREFIX" indication is required in front of the x or xnn. For a PC Board having an overall
prefix number of A2-11 (as indicated on a Running List or Wiring Diagram), the label on the PC Board need only say
11 since the large assembly is to be clearly labeled as A2.
PUB07-07 Rev 2
GENERAL INFORMATION
Use of Prefix Numbers in Documentation
a) Interconnect Diagrams or Running Lists, in which only one Large Assembly is detailed (e.g., Cabinet Assembly).
Prefix numbers are used as follows;
For example: 11-J1 (Subassembly #11- Connector J1)
b) Interconnect Diagrams or Running Lists for a Transmitter indicating interconnections between Large Assemblies
(Cabinet-to-Cabinet or Cabinet-to-External Components). Prefix numbers are preceded by Major Assembly prefix and
“–“.
For example: A2-11-J1 (Amplifier Cabinet #2 -Subassembly #11- Connector J1)
The system configuration publication for this transmitter will contain a prefix list specific to your transmitter.
PUB07-07 Rev 2
GENERAL INFORMATION
LARCAN PARTS, ASSEMBLIES, ASSEMBLY DRAWINGS AND SCHEMATIC
NUMBERS
3.1 VENDOR STANDARD PART NUMBERS
Vendor or original manufacturer part numbers are indicated for most components.
3.2 LARCAN NUMBERS FOR PARTS, ASSEMBLIES AND DOCUMENTATION
An index of LARCAN specified number are used to define and specify the following;

parts made by a manufacturer to LARCAN specification,

an assembled unit or “group” such as a PC Board or completed cabinet.

assembly drawings and schematics

standards.
Depending on the application, Autocad drawing or Microsoft Word document format is used.
Document numbers have the format YYZXXXXKn Rev m where :
YYZ
Prefix denoting drawing size and Product type. Can be 10A, 11A, 20B, 21B, 30C, 31C, 40D, 41D, 50E, 51E –
describes drawing or document size, VHF or UHF application
XXXX Drawing Index number. Between 0000 to 9999.
Refers to the type of drawing / document;

“no suffix” for drawing of part (assembly or schematic),

P = Part

G = Group of parts

A = Assembly drawing

F = PC board fabrication films and

S = Schematic
Index number for drawing type. Part, group, assembly drawing or schematic next number and may be
or more digits
Rev
Revision (sometimes denoted as R or R-)
Revision number and may be one digit or more. May contain a decimal (e.g., Revision 3.2)
Drawings may consist of one or more sheets. Generally multiple sheets are used if one sheet is not enough to show all
necessary information. Sometimes, especially with older drawings, multiple sheets are used to show more than one
part or assembly.
3.3 LEADED RESISTORS
Generic carbon composition resistors with leads are numbered as follows;
nnnx
3R

- or -

nnx
Power Rating
Resistance Value *
152 = 1/4W
PUB07-07 Rev 2
nn 4
first digits of
Tolerance
K =10%
GENERAL INFORMATION
77 = 1/2W
resistance (5, 10% tol.)
78 = 1W
nnn -
first digits of
79 = 2W
resistance (1% tol.)
J =5%
H =1%
x - x10 multiplier
For values between 1Ω and 10Ω, a letter “R” will appear in the resistance value to indicate the decimal place.
For vendor leaded resistors a generic drawing describing basic specifications, but having many “parts”, will often be
used.
“3R152P5R6J” is 5.6Ω, 1/4W, ±5%
“3R152P470K” is 47Ω, 1/4W, ±10%
“3R152P1022H” is 10.2kΩ, 1/4W, ±1%
“3R152P102J” is 1kΩ, 1/4W, ±5%
3.4 SURFACE MOUNT RESISTORS 1/4W AND LESS
There is no specified recommended supplier of these parts. The Philips numbering system is employed with the
following parameters/designations (example follows):
9C


SIZE LxW
POWER
RATING
0603=1.6x08mm
1 = 1/16W
0805=2x1.25mm
2 = 1/10W
nnx
nnnx
1206=3.2x1.6mm
nnnx


RESISTANCE VALUE
TOLERANCE
TEMP COEF
2 = 1/8W
(1% tol.)
3 =1/4W
(5% tol.)
tolerance>=5%
nn=first 2 digits
x=multiplier
D=0.5%
C=50ppm/°C
F=1%
K=100ppm/°C
tolerance<5%
nnn=first 3 digits
x=multiplier
J=5%
L=200ppm/°C
M=300ppm/°C
nRnx or nnRnx or nRnnx
R inserted as decimal point
where required
0000 - four zeros for jumper
The pairs of parameters enclosed in boxes are normally mutually selected; for example, a resistor having 1% tolerance
normally is selected as having a temperature coefficient of 100ppm/°C.
Example:
9C08052A1001FK
(Size 0805, Power Rating 1/10W, Resistance 1kohm, Tolerance 1%, Temperature
Coefficient 100ppm/°C)
3.5 SURFACE MOUNT CAPCITORS
There is no specifically recommended supplier of these parts. The part numbering system being used is based on a
Philips (now Yageo/Phycomp) numbering system with the following parameters/designations (example follows):

PUB07-07 Rev 2


Nnx


GENERAL INFORMATION
SIZE LxW
0603=1.6x08mm
0805=2x1.25mm
1206=3.2x1.6mm
DIELECTRIC
MATERIAL
CG = NPO
2R = X7R
2F = Y5V *
CAPACITANCE
VALUE
(in picofarads)
nn =first 2 digits
x =multiplier as
shown below
8=x0.01
9=x0.1
0=x1
1=x10
2=x100
3=x1000
4=x10000
5=x100000
2E = Z5U *
TOLERANCE
VOLTAGE
RATING
B=0.10pF
C=0.25pF
D=0.50pF
7=16VDC
8=25VDC
9=50 VDC
F=1%
G=2%
J=5%
K=10%
M=20%
0=100VDC
B=200VDC
D=500VDC
TERMINATION
B=Ni/Sn
A=Ag/Pd
C=Ni/Sn-Pb
* (infrequent use)
e.g,. 0805CG102J9B
SIZE
=0805
DIELECTRIC MATERIAL
=NPO
VALUE
=1000pF
TOLERANCE
=5%
VOLTAGE RATING
=50V
TERMINATION
=Ni/Sn
PACKAGING
=Not Specified
MARKING
=None
Note that “u” appears in most cases instead of the correct symbol “μ” whenever a “micro” is required. Electronic parts
list data, when imported by our PC publication program, allows us to substitute the correct “μ” when checking and
editing.
3.6 PARTS LISTS
Parts lists for all assemblies in the transmitter are provided on CD-ROM, in PDF format. The CD-ROM is packed
inside the transmitter cabinet for shipping.
Parts lists are generated in a hierarchical structure, beginning with major assemblies, then the subassemblies of each
major assembly, and so forth.
PUB07-07 Rev 2
GENERAL INFORMATION
SAFETY PRECAUTIONS
This section has been written to provide general guidance and information for the operation, maintenance, and service
personnel who are familiar with the hazards of working with high-powered electronic circuits. This manual does not
detail all of the safety precautions which should be observed when servicing this or any other electronic equipment.
Service by inadequately trained or inexperienced personnel can result in personal injury or death and/or
damage to the equipment.
Important: All personnel concerned with the servicing of this equipment should be thoroughly familiar with standard
first aid procedures for the treatment of electrical burns and shock, including cardio-pulmonary resuscitation (CPR).
Use the “buddy” system, with one person performing the actual service and a colleague observing. The observer must
be familiar with the work being performed and within sight and sound of the person doing the work. The observer
should not be engaged in any other work or be otherwise distracted; he must be available instantly in case of
accident.
Always have the observer with you when you work on the transmitter.
4.1 BERYLLIUM OXIDE WARNING
Internal thermal management in certain RF devices in this equipment is accomplished through the use of Beryllium
Oxide ceramic material. Beryllium Oxide is a hard white ceramic used as insulation for heatsinking of RF power
semiconductors. It is used between the silicon die of the device and the case, or flange, to both insulate and to conduct
heat to the heatsink through the flange of the transistor. Beryllium Oxide is a poison. Do not break open any RF power
transistors or otherwise dismantle them. In case of accidental breakage of devices, do not inhale the resulting
beryllium dust and avoid getting beryllium dust in your mouth. Do not let beryllium into your blood stream
through cuts or open wounds. Seek immediate medical attention if the dust enters your body in any manner. Avoid
cuts by wearing gloves while picking up the broken pieces. Be careful – do not inhale dust while replacing or emptying
vacuum cleaner filter bags and wash your hands thoroughly afterward. Wash your hands thoroughly after replacing RF
power devices. Dispose of defective RF power devices only through approved toxic waste facilities. Wear gloves when
picking up the pieces. Wash your hands thoroughly after replacing devices. Dispose of defective devices only through
approved toxic waste facilities.
Note: the ceramic cap that makes up the visible part of an RF device is not made from Beryllium Oxide. Beryllium Oxide
is only used internally to the device. While a broken ceramic cap can be sharp and cause cuts and abrasions and it is
therefore wise to handle it with care, the Beryllium Oxide is the substance used between the die of the device and the
internal case or flange.
When cleaning up after an accidental breakage, remember to wear a respirator mask to avoid inhaling the dust while
replacing or emptying vacuum cleaner filter bags, and to wash your hands well after servicing the vacuum cleaner. If
possible, use a wet vacuum, in which the dust gets trapped in water.
4.2 OTHER TOXIC MATERIALS
The non-metallic coverings of some coaxial cables used in this equipment are flammable and can transmit fire when
ignited. Other wire coverings are not capable of supporting combustion but any non-metallic covering when heated
sufficiently can emit dense smoke and acid gases, which can be highly toxic and often corrosive.
Solvents and glues can emit toxic vapors and can be flammable. Read and understand the directions on the containers
and ensure that they are used only in well ventilated locations.
4.3 DANGEROUS VOLTAGES
This equipment has been designed to protect operating personnel from accidental contact with dangerous voltages, by
means of shields and covers. It is extremely important that any protective covering devices be kept in place at all times.
While all practical safety precautions have been adopted to safeguard personnel from possible injury, both supervisory
and operating personnel are urged to ensure that the safety rules detailed below are followed as an established routine at
all times. The following four Rules are the standard safety guidelines for working with and around transmitters:
Rule #1 KILL THE AC POWER BEFORE IT KILLS YOU
PUB07-07 Rev 2
GENERAL INFORMATION
Under no circumstances should any person reach within the cabinets for the purpose of servicing or adjusting the
equipment without first disconnecting the AC power or without the immediate presence of another person
capable of rendering aid. The “buddy” system is encouraged for transmitter work.
Rule #2 DO NOT TAMPER WITH INTERLOCKS OR SAFETY SHIELDS
Under normal circumstances, no safety shield should be removed.
Rule #3 REMOVE PERSONAL JEWELRY WHEN WORKING ON THE EQUIPMENT
The mains AC power to this transmitter can deliver high currents capable of melting metallic tools or personal
jewelry, such as watch bands, bracelets, or rings. Accidental short circuits from such metallic objects can cause
an explosive shower of molten metal which can result in serious personal injury.
Rule #4 KNOW FIRST AID AND KEEP FIRST AID SUPPLIES AVAILABLE
Illustrated first aid instructions for the treatment of electrical shock and burns and CPR procedures should be
displayed in a prominent location adjacent to the equipment. In rendering first aid, the timeliness and
effectiveness of the treatment are vitally important to the recovery of the injured person.
Always have a colleague with you when you work on the transmitter and make sure both of you know first aid,
including cardio-pulmonary resuscitation (CPR). This is most important.
Without exception, all personnel should thoroughly familiarize themselves with the procedures involved. One person,
whose normal duties place him or her at the transmitter site often, should be given complete responsibility and authority to
ensure that first aid supplies are kept on site and maintained. Prominently display a list of emergency phone numbers.
This list should include the numbers of the nearest police, ambulance, hospital, doctor, fire department, paramedics,
poison control center, public works (roads) department, and the utility (power and phone) companies.
Do not try to work on the transmitter if you are tired or drowsy; you could make a fatal error in judgement. Antihistamines
and decongestants for colds or allergies, and some prescription medications, can make you drowsy; ask your pharmacist
if you do not know for sure. Avoid alcohol, even in moderate amounts, before working on the transmitter.
4.4 SWITCH TO SAFETY
MAKE SURE YOU HAVE IN PLACE A COMPREHENSIVE SAFETY PROGRAM AND HAVE DEFINED
PROCEDURES FOR EVERY ACTIVITY IN IT. KNOW FIRST AID AND CPR.
Use the “buddy” system, with one person performing the actual service and a colleague observing. The observer must
be familiar with the work being performed and within sight and sound of the person doing the work. The observer
should not be engaged in any other work or be otherwise distracted; he must be available instantly in case of
accident. Always have the observer with you when you work on the transmitter.
Pay attention to emergency communications requirements. This could even include a voice channel on the STL so that
constant communication with the studio can be maintained. Headset-equipped phones connected on this voice
channel should be installed in locations near hazardous areas or everyone on site should carry fully charged cell
phones. When you are administering CPR, you might not be able to leave your patient for the length of time it could
take to call paramedics, especially if phone service is poor, or lines are down, and/or you are in a rural area without
911 service.
Do not defeat the interlock switches on access doors unless it is absolutely necessary, and you know exactly what you
are doing.
Keep your work area neat and tidy, free of any interfering conductive material and free of any sharp objects.
Remember that reaction to a shock could cause you to strike nearby objects.
Avoid wearing loose clothing and personal jewelry such as rings, watches, and chains when working near energized
circuits. Make a habit of removing all jewelry and stowing it in a safe place as soon as you enter the transmitter
building.
Before beginning work, shut off all AC to the transmitter power supplies. Tag and lockout the switches. Your
safety routine must ensure that the person placing the tag and locking the switch is be the only person who removes it
and reactivates the switch. You might want to include the power to the remote control as well, if there is any possibility
that a studio worker could unknowingly activate the transmitter while you are working on it. Implement and observe a
PUB07-07 Rev 2
GENERAL INFORMATION
lockout/tagout procedure.
You might want to include your tower contractor's rigging crew in the list of people who are allowed to use tags and
padlocks. As an alternative, Dielectric™ makes a transmission line lockout switch that is intended for riggers to turn off
and lock out any RF before climbing over the antenna to replace light bulbs, etc.
Proper grounding is vital. See the Installation section of this manual. Make ground inspection a part of your
maintenance program; someone's life could depend on it!
4.5 DISCOURAGE PESTS
Transmitter sites, particularly unmanned locations, can become nesting grounds for rodents and other pests. These
pests can damage equipment and create a serious health hazard.
Eliminate or minimize access for rodents and other pests. Seal all cracks that are ¼ inch or larger with steel wool,
caulking, or metal flashing. Ensure that weather seals under doors are in good repair and fit tightly when the door is
closed. Make certain that all cable and pipe entrances to the building are properly sealed. Keep spring traps set at all
times and placed along the walls (rodents will travel along walls in preference to being out in the open). Clean up the
area around the building(s), getting rid of all potential nesting material and cover such as crates, boxes, cans, etc.
Ensure that all refuse, particularly foodstuffs, is immediately placed in sealed trash containers and is regularly taken
away from the site.
Assume that any rodents or other pests seen carry disease, whether dead or alive. This also applies to any droppings
found. Use a solution of household bleach (1½ cups of bleach to 1 gallon of water) to disinfect rodent carcasses and
traps before handling. Spray the rodent and trap and allow to sit for 5 to 10 minutes. Wear rubber gloves when
handling the trapped rodent. Dispose of the carcass in a sealed container, in accordance with local regulations.
Disinfect the gloves and the trap afterward.
Air out any rodent infested building for at least 30 minutes before entering. Do not sweep or dry-vacuum rodent
contaminated surfaces, as this can cause contaminants to become airborne. Spray contaminated materials with bleach
solution and allow to soak 5 to 10 minutes before cleaning with a mop, sponge, or wet-vacuum. Wear rubber gloves. In
heavily infested areas or in situations where ventilation is poor and wet clean up cannot be done, wear a face mask
fitted with a high efficiency particulate arrester (HEPA) air filter.
Incidentally, snakes eat mice, but they like warmth as well, and the transmitter and outdoor power supply will be warm
after running for a while. Seal all openings (cracks, cable, and pipe entrances), as mentioned above. Remember the
power supply has a raised base for a fork lift, and snakes could be warming themselves under it. Contact the local
wildlife or natural resources office for information on what species might be in the area and how best to avoid providing
a habitat for them.
PUB07-07 Rev 2
GENERAL INFORMATION
APPENDIX A
ABBREVIATIONS USED IN LARCAN INC. DOCUMENTS
Following is a list of abbreviations used on Larcan Inc. drawings, part lists, manuals etc.
PUB07-07 Rev 2
10
GENERAL INFORMATION
8VSB
8 LEVEL VSB
DAC
DIGITAL ANALOG CONVERTER
AMPERE, ASSEMBLY
dB
DECIBEL
AC
ALTERNATING CURRENT
DC
DIRECT CURRENT
AGC
AUTOMATIC GAIN CONTROL
DDS
DIRECT DIGITAL SYNTHESIS
ALC
AUTOMATIC LEVEL CONTROL
DEC
DECIMAL
ALT
ALTERNATE, ALTITUDE
DEG
DEGREE
AMP
AMPLIFIER
DET
DETECTOR
ANT
ANTENNA
DEV
DEVIATION
APL
AVERAGE PICTURE LEVEL
DG
DIFFERENTIAL GAIN
ASSY
ASSEMBLY
DIA
DIAGRAM
ASS'Y
ASSEMBLY
DIFF
DIFFERENTIAL
ASYNC
ASYNCHRONOUS
DIP
DUAL IN LINE PACKAGE
ATT
ATTENUATOR
DIPL
DIPLEXED
AUR
AURAL
DIR
DIRECTIONAL
AUTO
AUTOMATIC
DOC
DOCUMENT
AVG
AVERAGE
DOS
DISK OPERATING SYSTEM
AWG
AMERICAN WIRE GAUGE
DP
DIFFERENTIAL PHASE
BAT
BATTERY
DRAM
DYNAMIC ACCESS RANDOM MEMORY
BER
BIT ERROR RATE
DVR
DRIVER
BLO
BLOWER
DWG
DRAWING
BLU
BLUE
EMI
ELECTROMAGNETIC INTERFERENCE
BOM
BILL OF MATERIAL
ENV
ENVELOPE
BPF
BANDPASS FILTER
ERP
EFFECTIVE RADIATED POWER
BTU
BRITISH THERMAL UNIT
EXC
EXCITER
BW
BANDWIDTH
EXH
EXHAUST
DEGREE CELSIUS, CAPACITOR
EXT
EXTERNAL
C/N
CARRIER NOISE RATIO
DEGREE FAHRENHEIT, FARAD, FRONT
CA
CABLE ASSEMBLY
FET
FIELD EFFECT TRANSISTOR
CAB
CABINET
FFT
FAST FOURIER TRANSFORM
CAP
CAPACITOR
FM
FREQUENCY MODULATION
CATV
CABLE TV
FPGA
FIELD PROGRAMMABLE GATE ARRAY
CAV
CAVITY
FPT
FEMALE PIPE THREAD
CBL
CABLE
FREQ
FREQUENCY
CCW
COUNTERCLOCKWISE
FSK
FREQUENCY SHIFT KEYING
CHAM
CHAMFER
FWD
FORWARD
CHAN
CHANNEL
Giga/ G
1.00E+09
CMB
COMBINE
GND
GROUND
CMBNR
GPIB
GENERAL PURPOSE INTERFACE BUS
CMOS
COMBINER
COMPLIMENTARY METAL OXIDE
SEMICONDUCTOR
GPS
GEOGRAPHIC POSITIONING SYSTEM
CMRR
COMMON MODE REJECTION RATIO
GRP DEL
GROUP DELAY
COAX
COAXIAL
HENRY
COMP
COMPOSITE
HOUR
COND
CONDUCTOR
HCMOS
HIGH DENSITY CMOS
CONN
CONNECTOR
HCT
HIGH SPEED CMOS
CORR
CORRECTION
HD
HIGH DENSITY, HIGH DEFINITION
CPLR
COUPLER
HEPA
HIGH EFFICIENCY PARTICULATE AIR
CPU
CENTRAL PROCESSING UNIT
HEX
HEXADECIMAL
CT
CENTER TAP
HMOS
HIGH PERFORMANCE MOS
CTRL
CONTROL
HORIZ
CW
CLOCKWISE, CONTINOUS WAVE
HP
HORIZONTAL
HEWLETT PACKARD, HIGH POWER,
HORSE POWER
D/L
DUMMY LOAD
HPF
HIGHPASS FILTER
PUB07-07 Rev 2
GENERAL INFORMATION
HTTP
HYPERTEXT TRANSFER PROTOCOL
MTR
METER
HV
HIGH VOLTAGE
MUX
MULTIPLEXER
Hz
HERTZ
MXR
MIXER
CURRENT, INCIDENT, INDUCTOR
NEUTRAL
I/C
INTERCONNECTION
N/A
NOT APPLICABLE
I/F
INTERFACE
nano/ n
1.00E-09
I/FACE
INTERFACE
NEUT
NEUTRAL
IC
INTEGRATED CIRCUIT
INCIDENTAL CARRIER PHASE
MODULATION
NONLIN
NONLINEAR
NVM
NON-VOLATILE MEMORY
NVRAM
NON-VOLATILE RAM
O/I
OVERCURRENT
O/L
OVERLOAD
ICPM
IF
INTERMEDIATE FREQUENCY
IMD
IN, I/P,
INP
INTERMODULATION PRODUCTS
INPUT
O/V
OVERVOLTAGE
IND
INDUCTOR
OCT
INT
INTERNAL
INTFC
INTERFACE
OCXO
OCTAL
OVEN CONTROLLED CRYSTAL
OSCILLATOR
INTK
INTERLOCK
OPAMP
OPERATIONAL AMPLIFIER
OPT
OPTIONAL, OPTION
ORN
ORANGE
OSC
OSCILLATOR
OUT
OUTPUT
POWER, PRIMARY, PLUG
P/S
INTLK
INTERLOCK
IOT
INDUCTIVE OUTPUT TUBE
IPA
INTERMEDIATE POWER AMPLIFIER
IRQ
JFET
INTERRUPT REQUEST
JUNCTION FET
kilo/ k
1.00E+03
L/O
LOCKOUT
PA
POWER SUPPLY
POWER AMPLIFIER, PURCHASED
ASSEMBLY
LAN
LOCAL AREA NETWORK
PCB
PRINTED CIRCUIT BOARD
LCD
LIQUID CRYSTAL DISPLAY
PF
POWER FACTOR
LDMOS
LATTERALLY DIFFUSED MOS
PFD
POWER FLUX DENSITY
LED
LIGHT EMITTING DIODE
PFX
PREFIX
LIN
LINEAR
PH
PHASE
LNA
LOW NOISE AMPLIFIER
pico/ p
1.00E-12
LO
LOCAL OSCILLATOR
PL
PARTS LIST
LOC
LOCAL
PLL
PHASE LOCKED LOOP
LPF
LOW PASS FILTER
PM
PHASE MODULATION
LP
LOW POWER
PMOS
P CHANNEL MOS
LPTV
LOW POWER TELEVISION
PNL
PANEL
LSB
LEAST SIGNIFICANT BIT
POT
POTENTIOMETER
LV
LOW VOLTAGE
P-P
PEAK TO PEAK
Mega/ M
1.00E+06
PPS
PARTS PER MILLION
micro/ u
1.00E-06
PRESS
PRESSURE
mili/ m
1.00E-03
PROD
PRODUCTION
MIN
MINIMUM
PS
POWER SUPPLY
MOD
MODIFICATION, MODULATION, MODEL
psi
POUNDS PER SQUERE INCH
Mohm
MEGAOHM
PWR
POWER
MON
MONITOR
MONO
MONOPHONIC
QAM
QUADRATURE
QUADRATURE AMPLITUDE
MODULATION
MOS
METAL OXIDE SEMICONDUCTOR
READ, RESISTOR, RIGHT, REVISION
MOSFET
METAL OXIDE SEMICONDUCTOR FET
R/W
READ/WRITE
MOV
METAL OXIDE VARISTOR
RAM
RANDOM ACCESS MEMORY
MPT
MALE PIPE THREAD
RCVR
RECEIVER
MPX
MULTIPLEXER
REF
REFERENCE, REFURBISHED
MSB
MOST SIGNIFICANT BIT
REJ
REJECT
PUB07-07 Rev 2
GENERAL INFORMATION
REM
REMOTE
Tera/ T
1.00E+12
RES
TERM
TERMINAL
RES VAR
RESISTOR
RESISTOR VARIABLE,
POTENTIOMETER
TERMBLK
TERMINAL BLOCK
REV
REVISION
THD
TOTAL HARMONIC DISTORTION
TOL
TOLERANCE
TP
TEST POINT
TPO
TRANSMITTER POWER OUTOUT
TSM
TECHNICAL SERVICE MANUAL
TX
TRANSMITTER, TRANSMITTING
RF
RADIO FREQUENCY
RFI
RADIO FREQUENCY INTERFERENCE
RFL
REFLECTED
RIBB
RLY
RIBBON
RELAY
RMS
ROOT MEAN SQUARE
ROM
READ ONLY MEMORY
UART
UHF
UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
RST
RESET
UHF
ULTRA HIGH FREQUENCY
RU
RACK UNIT 1 3/4"
UNFL
UNFLANGED
RX
RECEIVING
UPS
UNINTERRUPTIBLE POWER SUPPLY
SCHEMATIC
UUT
UNIT UNDER TEST
S/N
SERIAL NUMBER
VOLT, VOLTAGE, VHF
SAT
SATELLITE
VA
VOLTAMPERE
SAW
SURFACE ACOUSTIC WAVE
VAR
VARIABLE
SCH
SCHEMATIC
Vcc
MAIN POWER SUPPLY
SCHEM
SCHEMATIC
VCO
SCLK
SERIAL CLOCK
VCXO
VOLTAGE CONTROLLED OSCILLATOR
VOLTAGE CONTROLLED CRYSTAL
OSCILLATOR
SCR
SILICON CONTROLLED RECTIFIER
VGA
VARIABLE GAIN AMPLIFIER
SEL
SELECT, SELECTION
VHF
VERY HIGH FREQUENCY
SHT
SHEET
VIO
VIOLET
SMA
SURFACE MOUNT ASSEMBLY
VIS
VISUAL, VISION
SMT
SURFACE MOUNT TECHNOLOGY
VLSI
VERY LARGE SCALE INTEGRATION
SN
SIGNAL TO NOISE
VSB
VESTIGIAL SIDEBAND MODULATION
SND
SOUND
VSWR
VOLTAGE STANDING WAVE RATIO
SNR
SIGNAL TO NOISE RATIO
WATT, WRITE, WITH
SOT
SMALL OUTLINE TRANSISTOR
WHT
WHITE
SPDT
SINGLE POLE DOUBLE THROW
WLAN
WIRELESS LOCAL AREA NETWORK
SPL
SPLITTER
REACTANCE
SPST
SINGLE POLE SINGLE THROW
XFMR
TRANSFORMER
STBY
STANDBY
XLTR
TRANSLATOR
STD
STANDARD
XMTR
TRANSMITTER
STEREO
STEREOPHONIC
YEL
YELLOW
SUBCARR
SUBCARRIER
YR
YEAR
SW
SWITCH
IMPEDANCE
SYNC
SYNCHRONIZATION, SYNCHRONOUS
SYS
SYSTEM
TEMP
TEMPERATURE, TEMPORARY
PUB07-07 Rev 2

---

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File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Page Count                      : 15
Language                        : en-US
Tagged PDF                      : Yes
Title                           : Related Publications:
Author                          : mweijers
Creator                         : Microsoft® Word 2010
Create Date                     : 2012:03:14 10:08:34-04:00
Modify Date                     : 2012:03:14 10:08:34-04:00
Producer                        : Microsoft® Word 2010

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