AMC XTad User guide

IA
AMC XTad
XTd/XTa
AM/FM & DAB/DAB+/FM+
DUAL STEREO TUNER
Partners with Crestron,
Control4, RTI etc
Digital Home Systems
with two way drivers
through RS232
through them you can
control XTad using
iPod, iPad, Touch
Panels and computers.

APPLICATION AND FEATURE LIST
2
Features of the AMC model XTad
* The AMC XTad is Partners with Crestron, Control4, RTI etc Digital Home Controller
Systems with two way drivers through RS232 through them you can control XTad
using iPod, iPad, Touch Panels and computers.
* The AMC model XTad AM/FM, DAB/DAB+/FM+ dual stereo tuner is designed to meet
professional quality standards for reception of analog AM/FM and digital
DAB/DAB+/FM+ broadcasts simultaneously for Digital Home applications as two
Tuner Sources.
* Selected grade components are utilized throughout the circuit design with special
emphasis on components within the audio path to assure stable, consistent
performance and superb sound quality.
* DAB/DAB+/FM+ Module has Antenna input (50 ohm, F61), Audio Output (L & R),
Digital Output and RS-232 interface connector.
* AM/FM Module has Antenna input (FM/75 ohm, AM, G), Audio Output (L&R), Optional
Digital Output, RS-232 interface and Region switch (US/EU)
* DAB/DAB+/FM+ module covers DAB Band III, DAB L Band and FM/RDS Band.
* DAB/DAB+/FM+ module has 10 Preset stations.
* In order to achieve superb sound quality, AM/FM module is designed with an AMC
proprietary designed Analog Tuner using Quartz referenced phase locked loop (PLL)
circuitry assures precise tuning.
* In order to achieve super sound quality, AM/FM module also designed with
sophisticated surface acoustic wave (SAW) filter at antenna input guards against
interference and noise.
* In order to achieve super sound quality, AM/FM module also designed with specially
selected linear phase IF filters combined with other matched circuit components
contribute to the ultra low distortion and excellent stereo separation.
* In order to achieve convenience for usages of users, AM/FM module designed with a
total of 30 AM and FM stations in any combination may be stored for recall. The
preset memory is nonvolatile and will retain stored entries for more than two weeks in
the event of power loss.
* A MONO mode is provided to minimize background noise when listening to weak
stations.
* Built-in RDS function: Provides automatic reception and display of data provided by
stations utilizing the Radio Data System (RDS) in their broadcasts (RBDS in USA).
* The XTad is with SMPS and can be used with 100-240VAC, 50-60Hz power supplies
in order to be used globally and for area with very high AC power supply variations.

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9
1. POWER SWITCH AND POWER
INDICATOR
2. TUNING DOWN
3. TUNING UP
4. SELECT
5. MODE
6. INFO
7. DAB/DAB+/FM+ DISPLAY
8. IR RECEIVER
9. AM/FM DISPLAY
10. TUNING DOWN
11. TUNING UP
12. MONO
13. MODE
14. AM
FOR DAB/DAB+FM+ MODULE FOR AM/FM MODULE (RIGHT
SECTION)
(LEFT SECTION)
FM
3
REAR PANEL CONNECTIONS/FRONT PANEL CONTROLS
REAR PANEL
FRONT PANEL
1. RECEPTACLE & FUSE (T1AL 250V)
(RIGHT SECTION)
2. ANTENNA - DAB/DAB+/FM+
3. RS-232 - DAB/DAB+/AM+ MODULE
4. DIGITAL OUTPUT - DAB/DAB+/FM+
5. ANALOG OUTPUTS(L&R) - DAB/DAB+/
FM+
6. IR IN & IR OUT
7. TRIGGER
(LEFT SECTION)
8. ANTENNA - FM
9. ANTENNA - AM
10. AUDIO OUTPUTS (L&R) - AM/FM
11. REGION (US/EU) - AM/FM
12. DIGITAL OUTPUT - AM/FM
13. RS-232 - AM/FM MODULE
FOR DAB/DAB+FM+ MODULE FOR AM/FM MODULE

REAR PANEL CONNECTIONS
4
1. AC RECEPTACLE & FUSE(T1AL
250V)
FOR DAB/DAB+/FM+ MODULE (RIGHT
SECTION)
2. ANTENNA - DAB/DAB+/FM+
3. RS-232 - DAB/DAB+/FM+ MODULE
4. DIGITAL OUTPUT - DAB/DAB+/FM+
5. ANALOG OUTPUTS (L&R) - DAB/
DAB+/FM+
6. IR IN & IR OUT
7. TRIGGER
The AC RECEPTACLE is for you to plug in
with power cord included in the packing or
you can plug in with other power cord with
your preferences.
There is 1 Amp time-lag fuse inside the
fuse holder beneath AC Receptacle.
Please always replace with the same type
and value of the fuse.
There is DAB/DAB+/FM+ Antenna
included with the AMC XTad. Please hook
the Antenna into the F61 connector for
starting to use the DAB/DAB+/FM+
module within the area with good signal
level of DAB, DAB+ and FM+ signals. If
the signal level is not good enough,
please use 75 ohm RF cable with F59
connector to hook to the F61 Antenna
input and connected to antenna or RF
booster to stronger signal area or boost to
acceptable level by RF booster.
The DAB/DAB+/FM+ Module of the AMC
XTad Dual Stereo Tuner can be separately
hooked to a control system through the
RS-232 connector. The RS-232 can be
hooked up to USB Hub or Ethernet Switch
through RS232 to USB or RS232 to
Ethernet adaptor. Through the RS232
connector, the DAB/DAB+/FM+ module
can accept commands from your system
controller and feed back status to your
controllers and touch panels. For details of
RS-232 commands, please refer to the
RS-232 appendix.
This RCA connector is with Audio SPDIF
digital output of DAB/DAB+/FM+ Module.
Connect standard audio cables from the L
and R output jacks to the Tuner inputs on
your preamplifier or system controller. You
may connect the audio outputs to any line-
level inputs, even if the input isn't label
"TUNER".
IR signal from rooms or IR OUT of other
units can be connected to the 3.5mm mini
IR IN jack on the rear panel of XTad. So,
XTad can be controlled by the IR remote
control in each room through IR sensor.
There is IR OUT as buffered output of IR
IN for controlling units hooking up to XTad
or operating as daisy chain for the IR
signal passing through the system.
For convenience the XTad can be
triggered to turn on automatically when a
suitable voltage is applied to its Trigger IN
jack. When automatic turn on is selected,
the XTad front panel Power button is
disabled so that on/off is determined solely
by the triggering preamp or controller.
MAN. (Manual) Position
When the MAN/AUTO switch is in its MAN
(Manual) position, the auto turn on
function is disabled and the XTad must be
turned on and off manually with the Power
button on its front panel.
AUTO Position
When the MAN/AUTO switch is set to its
AUTO (Automatic) position, the XTad will
be turned on and off by external dc or ac
voltage of 3.3V to 30V from your controller
or preamplifier. When external voltage
becomes low, the XTad will be turned off
immediately. The AUTO switch position
disables the front panel Power button.

IN (3-30V AC/DC)
The XTad 3-30V AC/DC input uses a
2.5mm dc jack. To trigger the XTad, plug
one end of the cord into this jack and the
other end into the source component's
trigger output. Some components may use
a 3.5mm trigger output jack, so you may
have to use a 3.5mm jack to 2.5mm plug
adaptor.
OUT (12VDC)
The 12Vdc trigger loop jack lets you
"daisy-chain" the incoming trigger voltage
to an additional XTad or other
components.
An FM antenna must be connected to the
75 ohm FM antenna input for effective
reception of FM broadcasts. A ribbon wire
"folded dipole" antenna, which looks like a
"T" when stretched out, is included to get
you started. For best results, the crossbar
portion of the "T" should be stretched out
horizontally and attached to the wall, to
the back of a cabinet or on the floor. The
"Vertical" part of the "T" should be
connected to the 75 Ohm FM antenna
input on the rear panel of the tuner by
using the 75 Ohm matching transformer
which is included in the accessory
package. For additional information on
antenna options, refer to "Notes On
Antennas" section at the end of this
manual.
A single wire is supplied as an AM
antenna. Connect it to the AM antenna
terminal and position it for best AM
reception by inserting one lead into the
terminal marked "AM" and leaving the
other lead unconnected. For additional
information on antenna options, refer to
the "Notes on Antennas" section at the
end of this manual.
Connect standard audio cables from the L
and R output jacks to the Tuner inputs on
your preamplifier or system controller. You
may connect the audio outputs to any line-
level inputs, even if the input isn't label
"TUNER".
Set the switch for the region where you
live. Tuning increments in the USA (North
America) are 200KHz for FM and 10KHz
for AM - Please set the Switch to "US"
position. Tuning increments in the
European Continental (Europe, UK,
Scandinavia) are 50KHz for FM and 9KHz
for AM - Please set the switch to "EU"
position.
This RCA connector is with Audio SPDIF
digital output as option for AM/FM Module.
The AM/FM module of the AMC XTad Dual
Stereo Tuner can be separately hooked to
a control system through the RS-232
connector. The RS-232 can be hooked up
to USB Hub or Ethernet Switch through
RS232 to USB or RS232 to Ethernet
adaptor. Through the RS232 connector,
the AM/FM module can accept commands
from your system controller and feed back
status to your controllers and touch
panels. For details of RS-232 commands,
please refer to the RS-232 appendix.
FOR AM/FM MODULE (LEFT SECTION)
8. ANTENNA - FM
9. ANTENNA - AM
10. AUDIO OUTPUTS (L&R) - AM/FM
11. REGION (US/EU) SWITCH - AM/FM
12. DIGITAL OUTPUT - AM/FM - Option
13. RS-232 - AM/FM MODULE
5

6
FRONT PANEL CONTROLS
1. POWER Switch POWER Indicator
For DAB/DAB+/FM+ Module (Left
Section & Display) - The DAB/DAB+
/FM+ module has two bands, one is
"DAB/DAB+" Band and the other is
"FM+" Band. (Here describe the FM
band as FM+ in order to distinct
between FM band in DAB/DAB+/FM+
module with FM band in AM/FM
module.)
2. & 3. TUNING DOWN & TUNING UP
For DAB/DAB+ Band
4. SELECT
5. MODE
When the MAN/AUTO switch on rear
panel set at MAN position, when the
power switch is pressed, the XTad turns
on and the small indicator light above the
switch will glow blue. Press the switch
again to turn off the XTad and the indicator
light goes out. When the MAN/AUTO
switch on rear panel is set to its AUTO
(Automatic) position, the XTad will be
turned on and off by external dc or ac
voltage of 3.3V to 30V from your controller
or preamplifier. When external voltage
becomes low, the XTad will be turned off
immediately. The AUTO switch position
disables the front panel Power button.
Tuning up or down the DAB, DAB+
services-stations is accomplished by
pressing either of the two TUNING
buttons. Press the Up Button to tune
toward higher frequency services-stations
or the Down Button to tune toward lower
frequency services-stations.
For DAB/DAB+ Band
Press the "SELECT" Button will switch the
"TUNING" Up/Down buttons between
"Auto Enter On" or "Auto Enter Off".
During "Auto Enter On", you will be able to
push "TUNING" Up/Down button to
Automatically enter into upper or lower
service-station. During "Auto Enter Off",
when you push "TUNING" Up/Down
buttons, the display will show the upper or
lower service-station and output will keep
at original service-station until you press
"SELECT" button. Without pressing
"SELECT" button, the display will come
back to original service-station
automatically.
For FM+ Band
The button has no function during FM+
Band.
For DAB/DAB+ Band
When user press the "MODE" button
instantly, the DAB/DAB+ will start "Quick
Scan" services-stations through whole
band for quickly scanning through most
common used service-stations. At end of
the scan total numbers of services-
stations will be displayed on the window.
When user press the "MODE" button for 3
sec, the DAB/DAB+ will start "Full Scan"
services-stations through whole band for
full scanning through all services-stations.
For FM+ Band
For FM+
Band Tuning up or down the FM+
services-stations is accomplished by
pressing either of the two TUNING
buttons. Press the Up Button to tune
toward higher frequencies or the Down
Button to tune toward lower frequencies.
When the FM+ is in MANUAL mode ( [M]
on display), the tuning frequency will
change in small steps. When the FM+ is in
AUTO mode ([A] on display), the
frequency will continue to advance rapidly
till the button is released.
The "MODE" button selects AUTO ( [A] on
display ), Manual ( [M] on display) &
Preset ( [P] on display), ( Preset number
Pxx will display on right bottom side of the
Display) .

6. INFO
For DAB/DAB+ Band
The "INFO" button selects Main Service
Name, Signal Strength (antenna symbol
and signal strength by number of
segments display on display), Time & Date
(Time & Date info on display), Program
Type, Signal Type (Stereo/Mono, bit rate
for DAB/DAB+ etc), TEXT, Service code
and Frequency.
For FM+ Band
The button has no function during FM+
Band.
7. DAB/DAB+/FM+ DISPLAY
8. IR RECEIVER
FOR AM/FM MODULE (RIGHT SECTION
& DISPLAY)
9. AM/FM DISPLAY
10. & 11. TUNING DOWN & TUNING
UP
12. MONO
13. MODE
14. AM FM
15. Zone
This is the Display of DAB/DAB+/FM+
status and data.
The IR Receiver is for both DAB/DAB+/
FM+ and AM/FM Modules.
This is the Display of AM/FM status and
data.
Tuning up or down the AM and FM bands
is accomplished by pressing either of the
two TUNING buttons. Press the Up
Button to tune toward higher frequencies
or the Down Button to tune toward lower
frequencies. When the AM/FM is in
MANUAL mode, the tuning frequency will
change in small steps. When the AM/FM is
in AUTO mode, the frequency will continue
to advance rapidly till the button is
released. Observe the Tuning indicators
while fine tuning to obtain maximum signal
strength. On FM, fine tune till the center
tune indicator is illuminated.
When a stereo FM signal is detected, the
tuner automatically switches into stereo
mode and displays the "S". However, very
weak FM station signals may be
excessively noisy. Pressing the MONO
button disables the stereo FM circuits in
the tuner resulting in significant reduction
of noise. The "ML" is displayed when
enforced Locked mono operation is
engaged. Remember to disengage the
MONO button when tuning to normal
stronger stations because as long as the
MONO button is engaged, broadcasts
cannot be received in stereo.
The "MODE" button selects AUTO ( [A] on
display ), Manual ( [M] on display) &
Preset ( [P] on display( Preset number Pxx
will display on right hand side of [P] on the
Display).
This button switches between the two
tuning bands: FM or AM. The digital tuning
display shows the tuned frequency in MHz
(for FM) or KHz (for AM). The tuning circuit
maintains a "last station selected"
memory, returning to the previously
selected station when switching between
bands.
The Zone number can only be controlled
from RS232 and Zone # set will be display
on top lefthand side of display. (Zx)
7

An infrared (IR) remote control RC-009 is
provided for convenient operation of the
XTad. The remote control has a range of
approximately 20-25 feet (6-7.5 meters).
Use only CR2025 3V Lithium battery in
the handset and insert them according to
the + polarity marking in the battery
compartment. The remote control can
control DAB/DAB+/FM+ and AM/FM
Modules siding DAB+, FM, AM keys as
described below;-
Press "FM" key, then press "DAB+" key
(the microprocessor inside the remote
control will set the codes for
DAB/DAB+/FM+ module. )
Press "FM" key, then press "AM" key (the
microprocessor inside the remote control
will set the codes for AM/FM module. )
# After setting to DAB/DAB+/FM+ or
AM/FM module, please use the 3 keys to
select the Band (DAB/DAB+ or FM+ or AM
or FM) you want to control.
To turn DAB/DAB+/FM+ module ON under
DAB+ (DAB/DAB+/FM+) Mode.
To turn AM/FM module ON under AM
(AM/FM) Mode.
To turn DAB/DAB+/FM+ module OFF
under DAB+ (DAB/DAB+/FM+) Mode.
To turn AM/FM module OFF under AM
(AM/FM) Mode.
Press this button to toggle between FM
and AM frequency bands.
DAB+, FM, AM Keys
# For controlling DAB/DAB+/FM+
Module,
# For controlling AM/FM Module,
ON
OFF
FM/AM
REMOTE CONTROL
8

Numerical keys0~9
PRESET
DIRECT
TUNE and TUNE
MEMORY
AUTO
MANUAL
PRESET
SELECT, INFO, MONO
TIME, PROGRAM, TEXT, TYPE
The numbered keys perform several
functions when combined with PRESET
and DIRECT buttons. See below:-
When this button is pressed, the
numbered keys can be for direct access to
each stored preset service-station.
Presets 1-9 are displayed as P01, P02,
P03, and so on. To select service-station
presets 10~30 for AM/FM module or 10 for
FM+ of DAB/DAB+/FM+ module, press
the tens place key first. For example, to
select 26, first press key 2, then press key
6.
When this button is pressed, the
numbered keys can select the broadcast
frequency of the station you wish to
receive. First press the DIRECT key, then
the numbered keys corresponding to the
station. In USA: to receive FM 103.7,
press DIRECT, 1, 0, 3, 7, 0. IN Europe: to
receive 103.75, press the DIRECT key,
then press keys 1, 0, 3, 7, 5. Note if you
enter an incomplete frequency, such as 1,
0, 3, 7 which is missing the final 0 or 5,
there will be a short pause while the XTad
fills in the missing number and finds the
station.
Tuning up or down the DAB/DAB+/FM+/
FM service-stations is accomplished by
pressing either of the two TUNE buttons.
Press the button to tune toward higher
frequencies or the button to tune toward
lower frequencies.
When you set or listen to a service-station
and want to put into memory as Preset
service-station, you can press the
"MEMORY" key and key in Preset # you
want to put the service-station in by
numerical keys. The display will show Pxx
right away.
Press this button to activate AUTO TUNE.
([A] on display)
Press this button to activate MANUL
TUNE. ([M] on display)
Press this button to activate PRESET. ([P]
on display)
The same as the buttons on front panel.
Please refer to Front Panel Control.
These buttons are for RDS of FM and
FM+. Press each key to display TIME,
PROGRAM, TEXT, TYPE on displays.
9

10
SPECIFICATIONS
DAB/DAB+
AM/FM/FM+
DAB...............................................ETSI 300 401 Standard
DAB+ ETSI TS 102563 Standard
RF frequency range
VHF Band III 174 ~ 240 MHz
L Band 1452 ~ 1492 MHz
Sensitivity
VHF (EN50248) -97 dBm
L Band (EN50248) -96 dBm
Maximum Input Signal, Band III after error correction 0 dBm
Adjacent Channel Selectivity
Band III (EN50248) 40 dB
L Band (EN50248) 40 dB
Far-off selectivity
Band III (EN50248) 50 dB
L Band (EN50248) 50 dB
Acquisition Sensitivity 101 dBM
RF Input Impedance 50 ohm
Audio THD @ 2Vpp 0.01%
Audio SNR @ 2Vpp 92 dB
Stereo Channel Separation 90 dB
Analog Audio Output Impedance ohm
Analog Audio Output Level 500 mV
SPDIF Digital Audio Output Impedance
SPDIF Digital Audio Output level (16bit/48KHz)
FM TUNER SECTION
Input Sensitivity
MONO 30dB S/N 11.3 dBf(1.0uV/75 ohm)
MONO 50 dB S/N 15 dBf (1.5 uV/75 ohm)
STEREO 50 dB S/N 37 dBf (20 uV/75 ohm)
STEREO 60 dB S/N 47 dBf (60 uV/75 ohm)
Capture Ratio (45 and 65 dBf) <1.5 dB
AM Rejection (45 and 65 dBf) >60 dB
Selectivity Alternate Channel..... 65dB
Image Rejection 80 dB
RF Intermodulation 60 dB
IF Rejection 90 dB
Subcarrier Suppression (19 and 38 kHz) 60 dB
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....................................600
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................................75ohm
..........................0.5Vpp
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Weltronics Corp. reserved the right to improve its products at any time. Specifications
are subject to change without notice.
THD at 100% Modulation
MONO
1kHz .................................................0.08%
100Hz - 6kHz ...........................................0.2%
STEREO
1kHz .................................................0.08%
100Hz - 6kHz ...........................................0.3%
Signal/Noise Ratio (at 65 dBf, IHF weighted)
MONO ....................................................>78dB
STEREO ..................................................>74dB
Frequency Response 30Hz - 15kHz .................................+/-0.5 dB
Stereo Separation 1kHz .............................................50dB
30Hz - 10kHz .....................................................35dB
Analog Audio Output Impedance ....................................600ohm
Analog Audio Output Level..........................................500mV
SPDIF Digital Audio Output Impedance................................ 75ohm
Digital Audio Output level (16bit/32KHz)............................... 0.5Vpp
Useable Sensitivity .................................................10uV
Selectivity ........................................................30dB
Image Rejection ...................................................45dB
IF Rejection.......................................................35dB
Signal/Noise Ratio (30% modulation, 50mV input).........................45dB
THD .............................................................0.5%
Output Level.....................................................125mV
Power Supply.....................................100~240VAC, 50 ~ 60 Hz
Power Consumption.................................................30W
Dimensions (WxHxD)...................................430x82x300mm
Net weight .......................................................5.5Kg
Shipping weight (4 pieces)..........................................23.5 Kg
AM TUNER SECTION
PHYSICAL:
11

12
NOTES ON ANTENNAS
In most cases, the exceptional sensitivity of AMC tuner circuits results in achieving very good
performance with only a ribbonwire dipole antenna. However there are limitations to a dipole. It is not
effective at rejecting multipath distortion and other forms of FM interference and it cannot easily be
oriented for optimizing its reception pattern. Other possible solutions, in order of increasing cost, include:
1. Indoor TV antenna (rabbitears) without extra coils or tuning switches
* Will NOT improve the strength of weak signals.
* Has solid metal tuned elements that can be rotated.
* The two elements should be extended to a total length of 30 inches (75cm) and oriented horizontally
or at a shallow angle less than 45 degrees upward.
* The antenna connecting wire should be connected to the tuner 75 Ohm antenna terminal using the
matching transformer included in the tuner accessory package.
* After selecting a station, rotate the antenna for best reception.
2. Indoor TV antenna (rabbitears) with a tuning switch
* Will NOT improve the strength of weak signals.
* May reduce some types of FM interference, such as reflected multipath signals.
3. Electrically tuned indoor antenna
* Will NOT improve the strength of weak signals.
* May further reduce some types of FM interference, such as reflected multipath signals.
4. Outdoor antenna
* Provides largest selection of stations and best reception with lowest noise and distortion.
* Narrower directional pattern more effectively rejects reflected multipath signals.
* Signal strength is directly proportional to the antenna height above the ground.
* May be mounted to a tall mast or to a roof.
* Because TV antennas are purposely designed to be weak at FM frequencies, to lessen interference
to TV signals, a directional FM only antenna will provide best results.
* FM only antenna should be mounted as high above ground as practical and at least two meters (7
feet), both horizontally and vertically away from other antennas.
* Can be mounted on a rotor to allow aiming at stations located in different directions (more than 90
degrees apart).
* Use shielded lead in wire rather than plain "twinlead" wire for better performance, longer life and
protection from the weather.
* Disconnect any indoor antenna from the tuner before connecting the outdoor antenna.
CAUTIONS:
* Avoid power lines when locating and installing antenna
* Include a lightning arrestor in the installation to protect both yourself and the tuner from potential
danger during electrical storms.
OUTDOOR AM ANTENNA
* To improve AM reception, a "longwire" outdoor AM antenna may be installed.
* A "longwire" antenna is simply a straight wire which may vary in length from a few feet up to about
100 feet (30 meters).
* Must be mounted parallel to the earth and should be located as high above the ground as convenient.
* Connect to the tuner at the AM antenna terminal.
* Connect another wire from the Ground terminal to a true "earth" ground, such as a copperplated rod
driven several feet into the earth. Alternate grounds include a coldwater pipe, a steam radiator or
even the third hole of a modern electrical wall socket.

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 TUNERAND RECEIVERS ONLY)
An outdoor antenna should be located away from power lines.
(APPLIES TO TUNERAND 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/NFPANo.
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- 4246
WELTRONICS CORP.
LONDON/L.A.
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