AMC XCDI User guide

IA
XCDi
CD&MP3
24bit / 192KHz Sampling Advanced Segment DAC, DVD USB Digital Input (Option)
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", WMA compressed music files as "WMA",
ACC compressed music files as "ACC"
COMPACD DISC
PLAYER

WARNING! INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED.
AVOID EXPOSURE TO BEAM.
VORSICHT! UNSICHTBARE LASERSTRAHLEN TRITT AUS, WENN DECKEL GE FFNET
UND WENN SICHERHEITSVERRIEGELUNG BERBR CKT IST. NICHT DEM STRAHL
AUSSETZEN.
ADVARSEL- USYNLIG LASERSTR LING VED BNING, N R SIKKERHEDSAFBRYDERE
ER UDEAF FUNKTION. UNDG UDS TTELSE FOR STR LUNG.
ADVARSEL- USYNLIG LASERSTR LING N R DEKSEL PNES OG SIKKERHEDSL S
BRYTES. UNNG EKSPONERING FOR STR LEN.
VARNING- OSYNLIG LASERSTR LNING N R DENNADEL R PPNAD OCH SP RRAR
R URKOPPLADE. STR LEN R FARLIG.
VARO!- AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTlINA
N KYM T NNT LASERS TEILYLLE. L KATSO S TEESEEN.
SERVICE SAFETY PRECAUTIONS (UL)
1. Use exact replacement parts for critical locations, marked " ".
2. Return lead dress to original position, and re install protective
covers.
3. Before returning to customer, test for shock hazard; use either
methodA or B:
A. Leakage test, "cold":
1. UnplugAC cord; turn power switch ON.
2. Connect one lead of High Voltage Insulation Tester to both prongs
ofAC plug.
3. Touch other lead to all exposed metal parts.
4. Impedance measurement must be 0.3-5.0 Megohms.
B. Leakage test, "live":
1. Plug unit directly intoAC outlet; do not use isolation transformer.
2. Connect one lead of Leakage Current Tester to earth ground.
3. Touch other lead to all exposed metal parts.
4. Leakage measurement must be less than 0.5 milliamps.
LUOKAN 1 LASERPLAITE
CLASS 1 LASER PRODUCT
KLASS 1 LASERAPPARAT
CAUTION:
ATTENTION:
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH THE SAME
TYPE OF T1A/250V FUSES.
POUR MAINTENIR PROTECTION CONTRE RISQUE D'INCENDIE, UTILISER LES FUSIBLES
DE RECHANGE DE MEME TYPE DE T1A/250V.
THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS B LIMITS FOR RADIO NOISE EMISSIONS
FROM DIGITAL APPARATUS AS SET OUT IN THE RADIO INTERFERENCE REGULATIONS OF THE
CANADIAN DEPARTMENT OF COMMUNICATIONS.
LE PRESENT APPAREIL NUMVERIQUE N'EMET PAS DE BRUITS RADIOELECTRIQUES DEPASSANT
LES LIMITES APPLICABLES AUX APPAREILS NUMERIQUES DE LA CLASSE B PRESCRITES DANS LE
REGLEMENT SUR LE BROUILLAGE RADIO ELECTRIQUE EDICTE PAR LE MINISTERE DES
COMMUNICATIONS DU CANADA.
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT
MAY CAUSE UNDESIRED OPERATION.
2

3
FEATURES OF THE AMC MODEL XCDiTM
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The AMC model XCDi was designed to play standard
(hereafter we will call it " ) ,
(hereafter we will call it " ) and WMA (Window Media Audio) compressed
Compact Disc (here after we will call it "WMA").
If you will like to
, you can purchase to install into your
AMC model XCDi and achieve it.
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
to achieve
and improved tolerance to clock jitter. The DAC offers excellent
, excellent and with excellent
Digital Filter giving . The
DAC can handle and
and . So, utilizing the
optional modules, the DAC can be hooked to digital outputs of AV Receivers, DVD-
Audio/Video, SACD, HDTV, Computer, Game Consoles (through SPDIF or USB
interface if you will use AMC MD5501 or MD5502 module) and we can up-sampling
the signals to 24bit/192kHz and pass through the acclaimed DAC in order to get
best possible sound out from each system.
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.
non-compressed PCM
Compact Disc CD" MP3 compressed Compact Disc
MP3"
enjoy high quality sound from your DVD, Computer or Game
Console AMC MD5501 or MD5502 module
PCM1798, 24-Bit/ 192 KHz Sampling Advanced Segment
D/A Converter architecture excellent dynamic performance (123dB
typically) SNR up
to 123dB typical THD+N down to 0.0005% typical 8x
Over-sampling Pass-Band Ripple down to + - 0.002dB
sampling frequency of 10kHz to 200kHz accepts 16-, 20-
and 24-Bit Audio Data it installed with Digital De-Emphasis
for CD & MP3
In the product and manual, AMC calls non-compressed PCM wave files Compact Disc as
"CD", MP3 compressed music flies as "MP3", WMA compressed music files as "WMA",
ACC compressed music files as "ACC"

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)
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
12345
67
REAR PANEL CONNECTIONS/FRONT PANEL CONTROLS
REAR PANEL
FRONT PANEL
1
11
212 313 4 5 6 7 8 9
10

5
1. AUDIO OUTPUT
except
2. DIGITAL OUTPUT
3. OPTICAL INPUT (OPTION)
4. SWITCH - OPTICAL, S/PDIF (OPTION)
5. S/PDIF DIGITAL INPUT (OPTION)
6. USB (Computer, Gamer) (OPTION)
7. AC RECEPTACLE
Connect the left and right channel
unbalanced (RCA) audio outputs to
any input on your pre-amplifier or
receiver " Phono " or " Turn-
table ". High-quality interconnection
cables are recommended.
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).
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-sampling feature
of MD5501or MD5502 to up-sample the
digital signal to 24bit/192KHz and then
use one of the highest quality DAC
installed in XCDi to make it possible for
you to enjoy highest possible sound
quality from your DVD player.
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"
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"
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-
sampling feature of MD5501 or MD5502
to up-sample the digital signal to
24bit/192KHz and then use one of the
highest quality DAC installed in XCDi to
make it possible for you to enjoy highest
possible sound quality from your
computer or game console.
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
Note: The unit is with switching power
supply for AC 100V to 240V globally.
2. OPEN / CLOSE
3. PLAY/PAUSE
Depressing the power switch turns on the
CD player. The blue LED indicator above
the power switch will glow blue.
By pressing the OPEN/CLOSE button the
disc drawer will open. Press it again will
close the drawer. If the drawer is opened
while a disc is playing, the disc will stop
and the drawer will open. 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"
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 "CD", numbers of tracks
(show "##" after "TRK") inside the disc
and total time on the disc ("##: ##" =
"Minutes": "Sec")
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 (show
"###" after "TRK") inside the disc and
total number of Titles ("TTL").
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) together with TRACK/TITLE
selecting button (8) 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
5. CD MP3 / USB / SD CARD / 24192
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.
STOP button will also clear PROGRAM
and RANDOM play.
The default position is on "CD MP3" and
display inside window will be "TRK" and
"TTL". 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
MD5501 or MD5502 module that has 3
connectors OPTICAL INPUT, S/PDIF
DIGITAL INPUT or USB. At the same
time, display inside window will be
switched to "24192". Press the button
again will switch the input to "CD MP3"
again.
CD MP3/USB/SD CARD
24192
Display "TRK"
or "TTL", can play CD & MP3 Discs or
USB or SD Card.
Display "24192"; input switched to
MD5501 or MD5502 module.

6. PROGRAM
7. REPEAT / enter
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 "PGM"
indicator will be turned on and with two
digital of number "##" flashing.
a) Use Track or TITLE Up/ Down
buttons (10) together with TRACK/
TITLE selecting button (8) to go to
the TRACK you will like to put into
the PROGRAM.
b) Press "enter" button to put the
TRACK # into the PROGRAM.
c) The number (:##) after "PGM"
indicates number of PROGRAM
you are putting in. So, once you
press "enter" 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 t h e
sequence you entered into the
PROGRAM.
f) To clear the PROGRAM memory,
press STOP button.
g) With MP3 Disc, Press PROGRAM
button once, the display will show
playing time passed, Press the
PROGRAM button again, the
display will show "count down"
time.
Press again will show "Artist"
Press again will show "TITLE"
Press again will show "Album
Name"
Press again will show "File Name"
This button will be used as REPEAT
button, unless the PROGRAM mode will
be activated by pressing the PROGRAM
button.
For operating the button under "enter"
mode, please refer to the above "6.
PROGRAM" section.
When the button used as REPEAT mode,
this REPEAT button will allow three
different types of endless play modes.
Press REPEAT button once, the word
"RPT 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 "RPT ALL" will appear and all tracks
will be repeated endlessly until the STOP
button is pressed. Press REPEAT button
3rd time, the word "RPT TTL" will appear
and the entire TITLE will repeat until the
STOP button is pressed. The "RPT TTL"
is only applying to MP3 discs. For CD,
there will be no "RPT TTL" feature, as CD
has no TITLE included.
Press REPEAT button a fourth time or
press the STOP button to cancel
REPEAT mode. The display and
operation will return to normal.
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 (TRK ###). 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 display inside window will show
both TITLE number (TITLE ##) and
TRACK number (TRK ##). Under TITLE
mode, you can change TITLE # Up or
Down by pressing the TRACK/ TITLE Up
(>) or Down (<) button.
Press the button again will come back to
TRACK mode.
8. TRACK / TITLE
7

8
9. SEARCH
10. TRACK / TITLE
11. DISPLAY
TITLE Number (TTL)
TRK (TRACK) Number
Time
>
II
RPT 1
RPT TTL
PRT ALL
TTL
TRK
PGM
RDM
12. USB Socket
13. SD Card Slot
Press and hold SEARCH (<< or >>) to
find a desired starting point or a certain
part of a track.
Press TRACK / TITLE ( < or > ) to find a
desired TRACK or TITLE corresponding
to what the mode TRACK/ TITLE button
selected.
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.)
During playing, the following information
is displayed:
For MP3 Disc / USB / SD Card under
TITLE mode
These track numbers are identified on the
CD/MP3/USB/SD Card package and are
encoded in the disc by the disc
manufacturer.
Shows in minutes and seconds the time
elapsed in the music since the beginning
of the current track.
Glows to indicate disc is playing.
Glows to indicate the playing of disc is
under PAUSE mode.
Glows during repeat play of a single
track.
Glows during repeat play of the entire
TITLE
Glows during repeat play of the entire
disc.
Glows during TITLE mode
Glows during TRACK mode
Glows during PROGRAM play.
Glows during RANDOM play.
Insert an USB stick containing MP3/
WMA/ACC music files for playback.
You can play/select USB stick music files
by the control buttons on front panel or
remote handset.
Insert SD card containing MP3/WMA/
ACC 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.

12 3 4
8910 15 5
7136
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
12. NUMERIC KEYPAD (0-9,ENTER)
13. A B
14. RANDOM
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.
This button engages a repeat cycle
between any two locations on the disc
(point A to point B)
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.
I

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):
S/PDIF DIGITAL OUTPUT:
PHYSICAL
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
Digital output level............................................................................0.5 Vpp
Load impedance................................................................................75 ohm
Peak emission wave length................................................................660 nm
Dimensions (WxHxD).........................................................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
WMA Audio Format:
File: Windows Media Audio 9
File extension: [.WMA]
Folder name, File name length 64 bytes (max)
ID3 title/artist/album the max number of bytes of title/artist/album is 60/60/60
Sampling rate (KHz): 48, 44.1, 32
11
APPENDIX:

All the safety and operating instructions should be read
before the appliance is operated.
The safety and operating instructions should be retained for
future reference.
All warnings on the appliance and in the operating instructions
should be adhered to.
All operating and use instructions should be followed.
The appliance should not be used near water - for example,
near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool, etc.
The appliance should be used only with a cart or stand that is
recommended by the manufacturer.
An appliance and cart combination should be
moved with care. Quick stops, excessive force,
and uneven surfaces may cause the appliance
and cart combination to overturn.
This equipment is not designed for use mounted on a wall or a
ceiling.
The appliance should be situated so that its location or position
does not interfere with its proper ventilation. For example, the
appliance should not be situated on a bed, sofa, rug, or similar
surface that may block the ventilation openings, or placed in a
built-in installation, such as bookcase or cabinet that may
impede the flow of air through the ventilation openings.
The appliance should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances
(including amplifiers) that produce heat.
The appliance should be connected to a power supply only of
the type described in the operating instructions or as marked
on the appliance.
Power-supply cords should be routed so that they are not likely
to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs,
convenience receptacles, and the point where they exit from
the appliance
The appliance should be cleaned only as recommended by
the manufacturer.
The power cord of the appliance should be unplugged from the
outlet when left unused for a long period of time.
Care should be taken so that objects do not fall and liquids are
not spilled into the enclosure through openings.
The user should not attempt to service the appliance beyond
that described in the operating instructions. All other servicing
should be referred to qualified service personnel.
The appliance should be serviced by qualified service
personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have fallen, or liquid has been spilled into the
appliance; or
c) The appliance has been exposed to rain; or
d) The appliance does not appear to operate normally or
exhibits a marked change in performance; or
e) The appliance has been dropped, or the enclosure is
damaged.
(APPLIES TO TUNER AND RECEIVERS ONLY)
An outdoor antenna should be located away from power lines.
(APPLIES TO TUNER AND RECEIVERS ONLY)
If an outside antenna is connected to the receiver, be sure the
antenna system is grounded so as to provide some protection
against voltage surges and built up static charges.
Section 810 of the National Electrical Code,ANSI/NFPA No.
70-1984, provides information with respect to proper
grounding of the mast and supporting structure, grounding of
the lead-in wire to an antenna discharge unit, size of grounding
conductors, location of antenna-discharge unit, connection to
grounding electrodes, and requirements for the grounding
electrode. See Figure.
a) Use No. 10 AWG (5.3 mm ) copper, No. 8 AWG (8.4 mm )
aluminum, No. 17 AWG (1.0 mm ) copper-clad steel or
bronze wire, or larger, as a ground wire.
b) Secure antenna lead-in and ground wires to house with
stand-off insulators spaced from 4-6 feet (1.22-1.83 m)
apart.
c) Mount antenna discharge unit as close as possible to where
lead-in enters house.
d) Use jumper wire not smaller than No.6 AWG (13.3 mm )
copper, or the equivalent, when a separate antenna-
grounding electrode is used. See NEC Section 810-21(j).
1. READ INSTRUCTIONS
2. RETAIN INSTRUCTIONS
3. HEED WARNINGS
4. FOLLOW INSTRUCTIONS
5. WATER AND MOISTURE
6. CARTS AND STANDS
6A.
7. WALL OR CEILING MOUNTING
8. VENTILATION
9. HEAT
10. POWER SOURCES
11. POWER-CORD PROTECTION
12. CLEANING
13. NON USE PERIODS
14. OBJECT AND LIQUID ENTRY
15. SERVICING
16. DAMAGE REQUIRING SERVICE
17. POWER LINES
18. OUTDOOR ANTENNA GROUNDING
22
2
2
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- 1 PN: 21R-4244-1