Appendix

AM characteristics

AM signals bend around such things as buildings or mountains and bounce off the ionosphere.

Therefore, they can reach longer distances than FM signals.

Because of this, two stations may sometimes be picked up on the same frequency at the same time.

FM characteristics

An FM broadcast range is usually about 40―50 km (25―30 miles) from the source. Because of extra coding needed to break the sound into two channels, stereo FM has even less range than monaural (non-stereo) FM.

Signals from an FM transmitter are similar to beams of light because they do not bend around corners, but they do reflect. Unlike AM signals, FM signals cannot travel beyond the horizon. Therefore, FM stations cannot be received at the great distances possible with AM reception.

Atmospheric conditions can also affect FM reception. High humidity will cause poor reception. However, cloudy days may provide better reception than clear days.

Multipath noise

Since FM signals can be reflected by obstructions, it is possible to receive both the direct signal and the reflected signal at the same time. This causes a slight delay in reception and may be heard as a broken sound or a distortion. This problem may also be encountered when in close proximity to the transmitter.

Flutter/Skip noise

Signals from an FM transmitter move in straight lines and become weak in valleys between tall buildings, mountains, and other obstacles. When a vehicle passes through such an area, the reception conditions may change suddenly, resulting in annoying noise.

Weak signal noise

In suburban areas, broadcast signals become weak because of distance from the transmitter. Reception in such fringe areas is characterised by sound breakup.

Strong signal noise

This occurs very close to a transmitter tower. The broadcast signals are extremely strong, so the result is noise and sound breakup at the radio receiver.

Station drift noise

When a vehicle reaches the area of two strong stations broadcasting at similar frequencies, the original station may be temporarily lost and the second station picked up. At this time there will be some noise from this disturbance.

Condensation phenomenon

Immediately after turning on the heater when the vehicle is cold, the CD or optical components (prism and lens) in the CD player may become clouded with condensation. At this time, the CD will eject immediately when placed in the unit. A clouded CD can be corrected simply by wiping it with a soft cloth. Clouded optical components will clear naturally in about an hour. Wait for normal operation to return before attempting to use the unit.

Handling the CD player

The following precautions should be observed.

• Do not use deformed or cracked CDs. The disc may not eject resulting in a malfunction.

  

• Do not use non-conventional discs such as heart-shaped, octagonal discs, etc. The disc may not eject resulting in a malfunction.

  

• If the memory portion of the CD is transparent or translucent, do not use the disc.

  

• A new CD may have rough edges on its inner and outer perimeters. If a disc with rough edges is used, proper setting will not be possible and the CD player will not play the CD. In addition, the disc may not eject resulting in a malfunction. Remove the rough edges in advance by using a ball-point pen or pencil as shown in the following figure. To remove the rough edges, rub the side of the pen or pencil against the inner and outer perimeter of the CD.

  

• When driving over uneven surfaces, the sound may jump.

  

• CDs bearing the logo shown in the illustration can be played. No other discs can be played.

  

• Use discs that have been legitimately produced. If illegally-copied discs such as pirated discs are used, the system may not operate properly.

• Be sure never to touch the signal surface when handling the CDs. Pick up a CD by grasping the outer edge or the edge of the hole and the outer edge.

  

• Do not stick paper or tape on the CD. Avoid scratching the reverse side (the side without a label). The disc may not eject resulting in a malfunction.

• Dust, finger smudges, and dirt can decrease the amount of light reflected from the signal surface, thus affecting sound quality. If the CD should become soiled, gently wipe it with a soft cloth from the centre of the CD to the edge.

• Do not use record sprays, antistatic agents, or household spray cleaners. Volatile chemicals such as benzine and thinner can also damage the surface of the CD and must not be used. Anything that can damage, warp, or fog plastic should never be used to clean CDs.

• The CD player ejects the CD if the CD is inserted upside down. Also dirty and/or defective CDs may be ejected.

• Do not insert cleaning discs in the CD player.

• Do not insert any disc with a peel-off seal affixed to it.

• This unit may not be able to play certain CD-R/CD-RWs made using a computer or music CD recorder due to disc characteristics, scratches, smudges, dirt, etc., or due to dust or condensation on the lens inside the unit.

• Storing CDs in the vehicle exposed to direct sunlight or high temperature may damage the CD-R/CD-RWs, and make them unplayable.

• CD-R/CD-RW exceeding 700 MB cannot be played.

• This unit may not be able to play certain discs made using a computer due to the application (writing software) setting used. (For details, consult the store where the application was purchased.)

• It is possible that certain text data, such as titles, recorded on a CD-R/CD-RW may not be displayed when musical data (CD-DA) is playing.

• The period from when a CD-RW is inserted to when it begins playing is longer than a normal CD or CD-R.

• Completely read the instruction manual and cautions for CD-R/CD-RWs.

• Do not use discs with cellophane tape adhering, partially peeled off labels, or adhesive material exuding from the edges of the CD label. Also, do not use discs with a commercially-available CD-R label affixed. The disc may not eject resulting in a malfunction.

MP3 stands for MPEG Audio Layer 3, which is standardised voice compression established by the ISO^*1 working group (MPEG).

Use of MP3 allows for audio data to be compressed to approximately a tenth of the source data size.

This unit plays files with the extension (.mp3) as MP3 files.

1. International Organisation for Standardisation

 

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Do not use an audio file extension on files other than audio files. In addition, do not change the audio file extension. Otherwise, the unit will not recognise the file correctly resulting in noise or a malfunction.

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Supply of this product only conveys a license for private, non-commercial use and does not convey a license nor imply any right to use this product in any commercial (i.e. revenue-generating) real time broadcasting (terrestrial, satellite, lead and/or any other media), broadcasting/streaming via the Internet, intranets and/or other networks or in other electronic content distribution systems, such as pay-audio or audio-on-demand applications. An independent license for such use is required. For details, please visit http://www.mp3licensing.com.

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• This audio system handles MP3 files that have been recorded on CD-R/CD-RW/CD-ROMs.

• When naming an MP3 file, be sure to add an MP3 file extension (.mp3) after the file name.

• The number of characters which can be displayed is restricted.

WMA is short for Windows Media^*1 Audio and is the audio compression format used by Microsoft^*1.

Audio data can be created and stored at a higher compression ratio than MP3.

This unit plays files with the extension (.wma) as WMA files.

1. Windows Media and Microsoft are registered trademarks of Microsoft Corporation U.S. in the United States and other countries.

 

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Do not use an audio file extension on files other than audio files. In addition, do not change the audio file extension. Otherwise, the unit will not recognise the file correctly resulting in noise or a malfunction.

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• WMA files written under specifications other than the indicated specification may not play normally or files or folder names may not display correctly.

• The file extension may not be provided depending on the computer operating system, version, software, or settings. In this case, add the file extension “.wma” to the end of the file name, and then write it to the disc/memory.

AAC stands for Advanced Audio Coding, which is standardised voice compression established by the ISO^*1 working group (MPEG). Audio data can be created and stored at a higher compression ratio than MP3.

This unit plays files with the extensions (.aac/.m4a/.wav^*2) as the AAC files.

 

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Do not use an audio file extension on files other than audio files. In addition, do not change the audio file extension. Otherwise, the unit will not recognise the file correctly resulting in noise or a malfunction.

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• AAC files written under specifications other than the indicated specification may not play normally or files or folder names may not display correctly.

• The file extension may not be provided depending on the computer operating system, version, software, or settings. In this case, add the file extension “.aac”, “.m4a”, or “.wav^*2” to the end of the file name, and then write it to the memory.

  *1 International Organisation for Standardisation

  *2 Type B

OGG is the audio compression format for Xiph. Org Foundation.

Audio data can be created and stored at a higher compression ratio than MP3.

This unit plays files with the extension (.ogg) as OGG files.

 

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Do not use an audio file extension on files other than audio files. In addition, do not change the audio file extension. Otherwise, the unit will not recognise the file correctly resulting in noise or a malfunction.

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• OGG files written under specifications other than the indicated specification may not play normally or files or folder names may not display correctly.

• The file extension may not be provided depending on the computer operating system, version, software, or settings. In this case, add the file extension “.ogg” to the end of the file name, and then write it to the memory.

This unit plays audio files as follows:

 

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Do not use an audio file extension on files other than audio files. In addition, do not change the audio file extension. Otherwise, the unit will not recognise the file correctly resulting in noise or a malfunction.

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• Playback may not be possible depending on the type and condition of the USB flash memory even if the audio file complies with the standard.

• A copyright protected WMA/AAC file cannot be played in this unit.

• (Type B)

  If a file name in the USB memory is too long, it could cause operation problems such as not being able to playback the song.

  (Recommended: Within 80 characters)

• The order of the music data stored in the device may differ from the playback order.

• To prevent loss or damage of stored data, we recommend that you always back up your data.

• If a device exceeds the maximum electric current value of 1,000 mA, it may not operate or recharge when connected.

• Do not pull out the USB device while in the USB mode (only pull it out while in FM/AM radio or CD mode).

• The device will not operate if the data is password protected.

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MP3/WMA/AAC/OGG^*1 files written under specifications other than the indicated specification may not play normally or files/folder names may not display correctly.

1. Type B

This unit supports playback of music files recorded to an iPod.

• iPod is a trademark of Apple Inc., registered in the U.S. and other countries.

The iPod may not be compatible depending on the model or OS version. In this case, an error message is displayed.

 

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• Remove the iPod when it is not in use. Because the iPod is not designed to withstand excessive changes in temperature inside the cabin, it could be damaged or the battery may deteriorate due to the excessive temperature or humidity inside the cabin if it is left in the vehicle.

• If data in the iPod is lost while it is connected to the unit, Mazda cannot guarantee recovery of any lost data.

• If the iPod battery is deteriorated, the iPod may not recharge and playback may not be possible when it is connected to the unit.

• Be careful not to pinch the iPod connecting lead when opening/closing the centre console.

• For details on using the iPod, refer to the iPod instruction manual.

• When connecting the iPod to a USB port, all commands are made from the audio unit. iPod control is not possible.

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The audio unit cannot display images or videos stored in an iPod.

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