AMC XCDI User guide

IA
XCDi
XCDi_vt
CD & MP3
24bit / 192KHz Sampling Advanced Segment DAC,
With AMC Proprietary Designed Switching Mode Power Supply to Cover 100 ~ 240VAC
For Using the Unit in All Countries in The World and
Give Superb Quality by High Regulated Power System Designs.
In the product and manual,AMC calls non-compressed PCM wave files Compact Disc as
"CD", MP3 compressed music flies as "MP3"
COMPACT DISC
PLAYER

WARNING! INVISIBLE LASER RADIATION WHENOPENANDINTERLOCKS DEFEATED.
AVOIDEXPOSURETOBEAM.
VORSICHT! UNSICHTBARE LASERSTRAHLEN TRITTAUS, WENN DECKELGE FFNET
UNDWENNSICHERHEITSVERRIEGELUNG BERBR CKTIST.NICHTDEMSTRAHL
AUSSETZEN.
ADVARSEL-USYNLIGLASERSTR LINGVED BNING,N RSIKKERHEDSAFBRYDERE
ERUDEAFFUNKTION.UNDG UDS TTELSEFORSTR LUNG.
ADVARSEL-USYNLIGLASERSTR LINGN RDEKSEL PNESOGSIKKERHEDSL S
BRYTES.UNNG EKSPONERINGFORSTR LEN.
VARNING-OSYNLIGLASERSTR LNINGN RDENNADEL R PPNADOCHSP RRAR
RURKOPPLADE.STR LEN RFARLIG.
VARO!- AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTlINA
N KYM T NNT LASERS TEILYLLE. L KATSOS TEESEEN.
SERVICESAFETYPRECAUTIONS(UL)
1.Useexactreplacementpartsforcriticallocations,marked" ".
2. Return lead dress to original position, and re install protective
covers.
3.Beforereturning to customer,testfor shock hazard; use either
methodAorB:
A.Leakagetest,"cold":
1.UnplugACcord;turnpowerswitchON.
2.ConnectoneleadofHighVoltageInsulationTestertobothprongs
ofACplug.
3.Touchotherleadtoallexposedmetalparts.
4.Impedancemeasurementmustbe0.3-5.0Megohms.
B.Leakagetest,"live":
1.PlugunitdirectlyintoACoutlet;donotuseisolationtransformer.
2.ConnectoneleadofLeakageCurrentTestertoearthground.
3.Touchotherleadtoallexposedmetalparts.
4.Leakagemeasurementmustbelessthan0.5milliamps.
LUOKAN1LASERPLAITE
CLASS1LASERPRODUCT
KLASS1LASERAPPARAT
CAUTION:FORCONTINUEDPROTECTIONAGAINSTRISKOF FIRE,REPLACEONLYWITHTHESAME
TYPEOFT1A/250VFUSES.
ATTENTION:POURMAINTENIRPROTECTIONCONTRERISQUED'INCENDIE,UTILISERLESFUSIBLES
DERECHANGEDEMEMETYPEDET1A/250V.
THISDIGITALAPPARATUSDOESNOTEXCEEDTHECLASSBLIMITSFORRADIONOISEEMISSIONS
FROMDIGITALAPPARATUSASSETOUTINTHE RADIO INTERFERENCE REGULATIONS OFTHE
CANADIANDEPARTMENTOFCOMMUNICATIONS.
LEPRESENTAPPAREILNUMVERIQUEN'EMETPASDEBRUITSRADIOELECTRIQUESDEPASSANT
LESLIMITESAPPLICABLESAUXAPPAREILSNUMERIQUESDELACLASSEBPRESCRITESDANSLE
REGLEMENT SUR LE BROUILLAGE RADIO ELECTRIQUE EDICTE PAR LE MINISTERE DES
COMMUNICATIONSDUCANADA.
THIS DEVICE COMPLIES WITH PART 15 OFTHE FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWINGTWOCONDITIONS:
(1)THISDEVICEMAYNOTCAUSEHARMFULINTERFERENCE,AND
(2)THISDEVICEMUSTACCEPTANYINTERFERENCERECEIVED,INCLUDINGINTERFERENCETHAT
MAYCAUSEUNDESIREDOPERATION.
2

3
FEATURES OF THE AMCTM MODEL XCDi for CD & MP3
The AMC model XCDi was designed to play standard non-compressed PCM
Compact Disc (hereafter we will call it "CD") , MP3 compressed Compact Disc
(hereafter we will call it "MP3")
The AMC model XCDi was designed to meet professional quality performance
standard and to provide superior value.
Selected grade components are utilized throughout the circuit design with special
emphasis on components within the audio path to assure stable, consistent
performance.
Premium transport and servo drive system assures constant data retrieval and
unsurpassed tracking performance,
Use Burr Brown from TI PCM1798, 24-Bit/ 192 KHz Sampling Advanced Segment
D/A Converter architecture to achieve excellent dynamic performance (123dB
typically) and improved tolerance to clock jitter. The DAC offers excellent SNR up to
123dB typical, excellent THD+N down to 0.0005% typical and with excellent 8x
Over-sampling Digital Filter giving Pass-Band Ripple down to + - 0.002dB. The
DAC can handle sampling frequency of 10kHz to 200kHz and accepts 16-, 20-
and 24-Bit Audio Data and it installed with Digital De-Emphasis.
Unique 5-pole linear active LPF (Low Pass Filter) prevents interference from
ultrasonic noise commonly found in other CD playback systems.
Advanced switching mode power supply design incorporates separate windings for
the digital, analog and servo circuits to prevent interference and preserve sonic
performance.
EIA calibrated audio outputs ensure proper match with pre-amplifiers and receivers.
Up to 20 tracks may be programmed to playback in desire order.
Full-function infrared (IR) remote control with direct track access.
With AMC proprietary designed switching mode power supply to cover 100 ~ 240VAC
for using the unit in all countries in the wold and give superb sound quality by high
regulated power system designs.
About XCDi-vt:
XCDi-vt is a special designed XCDi with vacuum tubes for offering superb sound
quality for Hi-Fi fans, golden ears and vacuum tube gears.
XCDi-vt incorporates an independent high voltage power supplies for the valve
circuitries.
The valves in XCDi-vt are working in a so-called "class A" amplification that claims the
best sound reproduction.

1. POWER SWITCH AND POWER
INDICATOR
2. OPEN/CLOSE
3. PLAY/PAUSE
4. STOP
5. CD / USB / SD CARD / 24192
6. PROGRAM
7. REPEAT / PROGRAM enter
8. TRACK / TITLE
9. SEARCH
10. TRACK / TITLE
11. DISPLAY
12. USB
13. SD CARD
4
REAR PANEL CONNECTIONS/FRONT PANEL CONTROLS
REAR PANEL
FRONT PANEL
1
11
2
12 313 4 5 6 7 8 9
10
1. AUDIO OUTPUT
2. DIGITAL OUTPUT
3. OPTICAL (OPTION)
4. SWITCH - OPTICAL, S/PDIF
(OPTION)
5. S/PDIF DIGITAL INPUT (OPTION)
6. USB (OPTION)
7. RECEPTACLE & FUSE (T1AL 250V)
12345
67

5
1. AUDIO OUTPUT
Connect the left and right channel
unbalanced (RCA) audio outputs to
any input on your pre-amplifier or
receiver except " Phono " or " Turn-
table ". High-quality interconnection
cables are recommended.
2. DIGITAL OUTPUT
Co-axial cable digital output. (For some
units, they are only made provision for
future upgrade, please contact your
dealer or distributor if you have problem).
3. OPTICAL INPUT (OPTION -
Including optional firmware &
hardware)
Once MD5501 or MD5502 module is
installed in XCDi, you will be able to
connect optical output of your DVD player
to the input in order to enjoy high sound
quality by using the up-upsampling
feature of MD5501or MD5502 to upscale
the digital signal to 24bit/192KHz and
then use one of the AMC proprietary
designed highest quality 24bit/192KHz
DAC installed in XCDi to make it possible
for you to enjoy highest possible sound
quality from your DVD player with superb
with superb sound stage and bandwidth.
4. SWITCH - OPTICAL, S/PDIF (OPTION)
Once MD5501 or MD5502 module is
installed in XCDi, there will be a switch to
switch digital inputs between "OPTICAL
INPUT" and "S/PDIF DIGITAL INPUT"
5. S/PDIF DIGITAL INPUT (OPTION)
Once MD5501 or MD5502 module is
installed in XCDi, the "SWITCH -
OPTICAL, S/PDIF" can select digital input
between "OPTICAL INPUT" and "S/PDIF
DIGITAL INPUT"
6. USB (Computer, Gamer) (OPTION)
Once MD5501 or MD5502 module is
installed in XCDi, you will be able to
connect USB of your computer or Game
Console to the USB connector in order to
enjoy high sound quality by using the up-
scaling feature of MD5501 or MD5502
to up-scale the digital signal to
24bit/192KHz and then use one of the
AMC proprietary designed highest quality
DAC installed in XCDi to make it possible
for you to enjoy highest possible sound
quality from your computer or game
console with superb sound stage and
bandwidth.
7. AC RECEPTACLE
The AC RECEPTACLE is for you to plug
in with power cord attached in the
packing or you can plug in with other
power cord with your preferences.

6
1. POWER SWITCH
Depressing the power switch turns on the
CD player. The blue LED indicator above
the power switch will glow blue.
Note: The unit is with switching power
supply for AC 100V to 240V globally.
2. OPEN / CLOSE
By pressing the OPEN/CLOSE button the
disc drawer will open. Press it again will
close the drawer. While a disc is playing
and OPEN/CLOSE is pressed, the disc
will keep playing. OPEN/CLOSE button
will only work during PAUSE or STOP
mode. An opened drawer can also be
closed by pressing PLAY/PAUSE button
or by gently pushing the drawer inward. If
the OPEN/CLOSE button is pushed after
programming the player, all programming
will be erased.
When the disc drawer is open, the
window will display "OPEN", The drawer
will close automatically if there will be no
button touch or controls happening, within
60 sec.
For CD, when you press OPEN/ CLOSE
button to close disc drawer, the window
will display "CLOSE" for around one
second then display "READING" and it
will take around 5 sec to load all
information from disc to the memory of
XCDi. Once all data are loaded, the
display will show number of tracks and
total time on the disc ( abc de:fg:hi;
abc=number of tracks, de=hours,
fg=minutes, hi=sec ) for around 2 sec,
then display track #1 and 00:00:00, and
get into pause mode after around 1 sec,
you can push "STOP" button to display
numbers of tracks and total time on the
disc.
For MP3, when you press OPEN/ CLOSE
button to close disc drawer, the window
will display "CLOSE" for around one
second then display "READING" and it
will take around 5 sec to load all
information from disc to the memory of
XCDi. Once all data are loaded, the
display will show numbers of tracks inside
the disc.
3. PLAY/PAUSE
Place CD or MP3 discs into the opened
drawer with the label facing up. Press the
PLAY/PAUSE button or OPEN/CLOSE
button will both close the drawer and
pass through the procedure described on
above item "2.OPEN/CLOSE". When all
data are loaded, you can press
PLAY/PAUSE button and begin playback.
Or you can use TRACK or TITLE Up/
Down buttons (10) to go to the TRACK
you selected and then press
PLAY/PAUSE button and begin playback.
For CD, you will only be able to select
TRACK as there is no TITLE defined in
CD.
Playback will stop when STOP button is
pressed or when the disc has reached the
end. While the disc is playing, press the
PLAY/PAUSE button to suspend playback
(PAUSE). Press the PLAY/PAUSE button
again to resume playback.
4. STOP
To stop the CD or MP3 while playing,
press the STOP button. Pressing the
STOP button will cancel any repeat-play
cycles and the display will show the
numbers of the tracks and total time on
the disc. (CD only)
STOP button will also clear PROGRAM
and RANDOM play.
5. CD MP3 / USB / SD CARD / 24192
CD MP3/USB/SD CARD Can play CD &
MP3 Discs or USB or SD Card.
The default position is on "CD MP3".
Under "CD MP3" position, you can play
CD or MP3 discs from the disc drawer of
the XCDi unit. By pressing the button the
input will be switched to USB or SD
CARD.

6. PROGRAM
The XCDi can be programmed to play up
to 20 tracks in any desired order.
Press the PROGRAM button you can
start to program playback. The "P-01"
indicator will be turned on and ready for
programming.
a) Use TRACK or TITLE Up/ Down
buttons (10) to go to the TRACK
you will like to put into the
PROGRAM.
b) Press "PROGRAM" button to put
the TRACK # into the PROGRAM.
c) The number (:##) after "P-"
indicates number of PROGRAM
you are putting in. So, once you
press "PROGRAM" button the
number will increase 1.
d) Repeat above step "a)" and "b)"
until all TRACKS you like to put
into PROGRAM are entered.
e) Press PLAY/PAUSE button to start
the playback following the
sequence you entered into the
PROGRAM.
f) To clear the PROGRAM memory,
press STOP button.
7. REPEAT / enter
This REPEAT button will allow three
different types of endless play modes.
Press REPEAT button once, the word "1"
will appear on the display and the
selected track will be repeated endlessly
until the STOP button is pressed.
Press REPEAT button a second time, the
word "A" will appear and all tracks will be
repeated endlessly until the STOP button
is pressed.
Press REPEAT button a 3rd time to
cancel REPEAT mode. The display and
operation will return to normal.
8. TRACK / TITLE
This is button to select TRACK or TITLE
of MP3 disc or USB or SD Card. For CD
disc, this button has no function.
The default is TRACK mode. The display
inside window will only show the TRACK
number (###). Under TRACK mode, you
can change TRACK # Up or Down by
pressing the TRACK/TITLE Up (>) or
Down (<) button.
When you press the button once, it will
switch from TRACK mode to TITLE mode
and the staying 5 sec. for TITLE select,
You can change TITLE # Up or Down by
pressing the TRACK/ TITLE Up (>) or
Down (<) button. The English title name
will show in display.
Press the button again to confirm your
selection.
9. SEARCH
Press and hold SEARCH (<< or >>) to
find a desired starting point or a certain
part of a track.
10. TRACK / TITLE
Press TRACK / TITLE ( < or > ) to find a
desired TRACK or TITLE corresponding
to what the mode TRACK/ TITLE button
selected.
11. DISPLAY
When loading a disc and using the
OPEN/CLOSE button to close the disc
drawer, the TOC (Table of Contents) of
the disc will be read and display will show
the number of tracks and total playing
time of all the tracks on the disc. For
those discs without TOC or data of time of
each track, the display of total time on the
disc will be "00:00" (For discs you
generated yourself from your computer
will be the case.)
7

8
During playing, the following information
is displayed:
TRACK Number
These track numbers are identified on the
CD/MP3/USB/SD Card package and are
encoded in the disc by the disc
manufacturer.
Time
Shows in minutes and seconds the time
elapsed in the music since the beginning
of the current track.
>
Glows to indicate disc is playing.
II
Glows to indicate the playing of disc is
under PAUSE mode.
1
Glows during repeat play of a single
track.
A
Glows during repeat play of the entire
disc.
P-01
Glows during PROGRAM play.
RDM
Glows during RANDOM play.
12. USB Socket
Insert an USB stick containing MP3 music
files for playback.
You can play/select USB stick music files
by the control buttons on front panel or
remote handset.
13. SD Card Slot
Insert SD card containing MP3 music files
for playback.
You can play/select SD card music files
by the control buttons on front panel or
remote handset.
XCDi has been tested with USB sticker/
SD card devices up to 16GB with FAT16,
FAT32 format.

14 3 4
8910 16 5
7156
TRACK TITLE SEARCH
9
REMOTE CONTROL
An infrared (IR) remote control is provided for convenience operation of the XCDi. The
handset provides the same control functions as the front panel PLUS three additional
control functions.
STOP
TRK/TITLE
PLAY/PAUSE
NUMERIC KEYPAD REPEAT
RANDOM
PROGRAM
CD MP3
USB/SD CARD/ 24192
14. NUMERIC KEYPAD (0-9,ENTER)
Allows direct selection of desired
track. Upon entry of the desired track
number, the player shifts to the
beginning of the track and begins to
play. Press required TRACK numbers
and press ENTER to complete the
entry of the track number.
15.AB
This button engages a repeat cycle
between any two locations on the disc
(pointAto point B)
16. RANDOM
Pressing RANDOM will play all the
tracks on the CD in a random order.
Press STOP button or RANDOM
button again will cancel RANDOM
play.

10
SPECIFICATIONS
Weltronics Corp. reserved the right to improve its products at any
time. Specifications are subject to change without notice.
AUDIO OUTPUT (Ref. 1KHz/0dB, unless otherwise stated):
Disc capacity...........................................................Single disc, 120 or 80mm
Digital to analogue conversion Burr-Brown Advanced segment DAC architecture
Digital filter..................8X over-sampling at up to 24-Bit/192KHz sampling rate
(Stop band attenuation:-98dB, pass-band ripple: +/-0.002dB)
Analogue filter..........................................................................5-Pole active
Frequency response 5Hz-20KHz....................................................<+/-0.2 dB
De-Emphasis error........................................................................<+/-0.2 dB
Linearity......................................................................+/-0.5 dB; 0 to -100 dB
Channel separation (20Hz to 20KHz)................................................. >100 dB
Channel imbalance.......................................................................<+/-0.1 dB
S/N ratio (A-weighted, measured with all zeros test disc)..................... . 115 dB
Dynamic range.................................................................................. 102 dB
THD (at 0dB, 1KHz,A-weighted)...................................................... 0.0011%
Inter-modulation distortion (19 & 20 KHz)..........................................<-110 dB
Output impedance...........................................................................120 ohm
Output level at 0dB..........................................................................2.2 Vrms
Digital error correction..............CIRC with double error correction in C1 and C2
Wow and flutter..................................Immeasurable (Quartz crystal accuracy)
Remote control unit...................................Full functional with numeric keypad
S/PDIF DIGITAL OUTPUT:
Digital output level............................................................................0.5 Vpp
Load impedance................................................................................75 ohm
Peak emission wave length................................................................660 nm
PHYSICAL
Dimensions (W x H x D).........................................................430x82x300 mm
Net weight........................................................................................4.0 Kgs
Shipping weight (4 pieces)...............................................................22.5 Kgs
Power consumption..............................................................................30 W
AC voltage................................................................................100V ~ 240V

MP3 Audio Format:
File: MPEG1, 2, 2.5 layer3
File extension: [.MP3]
Folder name, file name length 64 bytes (max)
ID3 TAG: Version2.4, Version2.3, Version2.2, Version1.1, Version1.0
ID3 title/artist/album, the max number of bytes of title/artist/album is 60/60/60
Sampling rate (KHz): 48, 44.1, 32, 24, 22.05, 16
Bit rate (Kbps): 320, 256, 224, 192, 160, 144, 128, 112, 96, 80, 64, 56, 48,
40, 32 / Variable bit-rate
11
APPENDIX 1: MP3 Audio Format
APPENDIX 2:
AMC CD Player Remote Code List
Customer Code: 07FC
RC103 = RC-0039*B
Random
Repeat
Trk/Title
Program
A<->B
Enter
#0
#1
Search Dn <<
#4
Trk/Title Dn <<
Stop
#7
Play/Pause
#8
#9
CD MP3 24192
#5
Trk/Title Up >>
#6
#2
Search Up >>
#3
Hex
00
01
02
03
06
07
08
09
0A
0D
0E
0F
11
14
15
17
18
19
1A
1B
1D
1E
1F
D0
0
1
0
1
0
1
0
1
0
1
0
1
1
0
1
1
0
1
0
1
1
0
1
D1
0
0
1
1
1
1
0
0
1
0
1
1
0
0
0
1
0
0
1
1
0
1
1
D2
0
0
0
0
1
1
0
0
0
1
1
1
0
1
1
1
0
0
0
0
1
1
1
D3
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
D4
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
D5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

1. MD5404 package
1.1 Vacuum Tube Module MD5404
1.2 Parts
1.2.1 PCB Spacer x 6
1.2.2 Screw Tapping T3x6SL (Black) x 2
1.2.3 Label vt, Black x 1 & Silver x 1
1.2.4 Cable Tie x 6
12
APPENDIX 3: Installing MD5404 into XCDit

3. Connect MAINS (P4 & P5 Power Supply Board)
2. Install MD5404 inot position
2.1 Insert PCB spacer x 5 pcs to bottom chassis
2.2 Screw 2 black screws to transformer bracket
13

4. Insert the ground lug between PCB copper tracks and stud then screw tightly.
5. Insert connectors to DAC board
5.1 4P BLUE wire – CN803 to DAC CN810
5.2 Soldered SK801 BLUE wire to DAC CN808
5.3 Soldered SK802 BROWN wire to DAC CN809
5.4 CN801 GRAY wire to DAC CN806
5.5 CN802 BROWN wire to DAC CN807
6, Remove J801/J802 jumper off
14
5.1 6
5.2
65.3
5.4 5.5

7. Dress parallel wire connecting DAC CN805 to CONTROL board as shown in photo.
(If this wire is not dressed properly as indicated then unexpected noise may be
generated.)
8. Tie cables properly
15

1. READ INSTRUCTIONS
All the safety and operating instructions should be read
beforetheapplianceisoperated.
2. RETAIN INSTRUCTIONS
Thesafetyandoperatinginstructionsshouldberetainedfor
futurereference.
3. HEED WARNINGS
All warnings onthe appliance and inthe operating instructions
shouldbeadheredto.
4. FOLLOW INSTRUCTIONS
Alloperatinganduseinstructionsshouldbefollowed.
5. WATER AND MOISTURE
Theappliance shouldnotbeusednear water-forexample,
near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement,ornearaswimmingpool,etc.
6. CARTS AND STANDS
Theapplianceshouldbeusedonlywithacart orstandthatis
recommendedbythemanufacturer.
6A.Anapplianceandcartcombinationshouldbe
movedwithcare.Quickstops,excessiveforce,
andunevensurfacesmaycausetheappliance
andcartcombinationtooverturn.
7. WALL OR CEILING MOUNTING
Thisequipmentisnotdesignedforusemountedonawallora
ceiling.
8. VENTILATION
Theapplianceshouldbesituatedsothatitslocationorposition
doesnotinterfere with its properventilation.For example, the
applianceshould not besituatedon a bed,sofa,rug, or similar
surfacethatmay block theventilationopenings,or placed ina
built-in installation, such as bookcase or cabinet that may
impedetheflowofairthroughtheventilationopenings.
9. HEAT
The appliance shouldbesituatedaway from heat sources
suchasradiators,heatregisters,stoves,or other appliances
(includingamplifiers)thatproduceheat.
10. POWER SOURCES
Theappliance shouldbeconnectedtoapowersupplyonlyof
thetypedescribedintheoperatinginstructionsorasmarked
ontheappliance.
11. POWER-CORD PROTECTION
Power-supplycordsshouldberoutedsothattheyarenotlikely
to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs,
conveniencereceptacles, and the point where they exit from
theappliance
12. CLEANING
Theappliance shouldbecleaned only asrecommended by
themanufacturer.
13. NONUSE PERIODS
Thepowercordoftheapplianceshouldbeunpluggedfromthe
outletwhenleftunusedforalongperiodoftime.
14. OBJECT AND LIQUID ENTRY
Careshouldbetakensothatobjectsdonotfallandliquidsare
notspilledintotheenclosurethroughopenings.
15. SERVICING
Theusershouldnotattempttoservicetheappliancebeyond
thatdescribed in theoperatinginstructions.Allotherservicing
shouldbereferredtoqualifiedservicepersonnel.
16. DAMAGE REQUIRING SERVICE
The appliance should be serviced by qualified service
personnelwhen:
a) Thepower-supplycordortheplughasbeendamaged;or
b) Objects have fallen, or liquid has been spilled into the
appliance;or
c) Theappliancehasbeenexposedtorain;or
d) The appliance does not appear to operate normally or
exhibitsamarkedchangeinperformance;or
e) The appliance has been dropped, or the enclosure is
damaged.
17. POWER LINES
(APPLIESTOTUNERANDRECEIVERSONLY)
Anoutdoorantennashouldbelocatedawayfrompowerlines.
18. OUTDOOR ANTENNA GROUNDING
(APPLIESTOTUNERANDRECEIVERSONLY)
Ifanoutsideantennaisconnectedtothereceiver,besurethe
antennasystemisgroundedsoastoprovidesomeprotection
againstvoltagesurgesandbuiltupstaticcharges.
Section810oftheNationalElectricalCode,ANSI/NFPANo.
70-1984, provides information with respect to proper
groundingofthemastandsupporting structure, grounding of
thelead-in wiretoanantennadischarge unit,sizeofgrounding
conductors,locationof antenna-discharge unit,connectionto
grounding electrodes, and requirements for the grounding
electrode.SeeFigure. 22
a) UseNo.10AWG(5.3 mm )copper,No.8AWG(8.4 mm )
2
aluminum, No. 17AWG (1.0 mm ) copper-clad steel or
bronzewire,orlarger,asagroundwire.
b) Secureantenna lead-in andgroundwiresto house with
stand-off insulators spaced from 4-6 feet (1.22-1.83 m)
apart.
c) Mountantennadischargeunitascloseaspossibletowhere
lead-inentershouse. 2
d) Usejumper wirenotsmallerthan No.6AWG(13.3mm )
copper, or the equivalent, when a separate antenna-
groundingelectrodeisused.SeeNECSection810-21(j).
SAFETY INSTRUCTION
S3125A
PORTABLE CART WARNING
Antenna Lead
In Wire
Ground
Clamp
Electric
Service
Equipment
Power Service Grounding
Electrode System
(NEC Art 250 Part H)
Ground Clamps
Antenna
Discharge
Unit (NEC
Section 810.20)
Grounding Conductors
(NEC Section 810.21)
Antenna Grounding According to
the National Electrical Code
National Electrical Code
Available from Library, book
stores, or National Fire Protection
Association (Batterymarch Park,
Quincy. MA 02269).
AMC 21-3004

21R- 4244- 2*A
PN: 21R-4244-2*A