Arcam FMJ AV9 User Manual download pdf (Page 37)

AV9

E-36

English

AV9

E-37

Additional technical information

Radio interference

The AV9 is a digital audio device which has been designed to very high standards of electromagnetic

compatibility.

The unit can radiate RF (radio frequency) energy. In some cases this can cause interference with FM

and AM radio reception. If this is the case, keep the AV9 player and its connecting cables as far from the

tuner and its aerials as possible. Connecting the AV9 and the tuner to different mains sockets can also

help to reduce interference.

EU COUNTRIES – These products have been designed to comply with directive 89/336/EEC.

USA – These products comply with FCC requirements.

Processing component Specications

The following list of chipsets used in the AV9 is provided for the interest of technical enthusiasts:

SPDIF receiver: Crystal Semiconductor CS8415A – a 96kHz digital audio interface receiver chipset.

ADC: AKM AK5383 – a 24-bit, 96kHz, 128x oversampling two-channel A/D converter for professional

digital audio systems.

DAC: WM8740 – a 24-bit 96kHz very high performance stereo DAC designed for home theatre systems.

Volume control: Burr-Brown PGA2310 digitally controlled stereo analogue volume control.

OSD: STV5730 – a high performing chipset used for on screen displays.

Video switching composite/S-video: Rohm BA7625 – a high performance chipset used for video

switching.

Video switching YUV/RGB: Elantec EL4332 – a very high performing broadcast quality chipset

designed for component video multiplexing.

DSP: Crystal Semiconductor CS49326 and CS49330 – these are 24-bit 96kHz multi-standard DSP

decoders.

Micro controller: Hitachi HD64F2329VF25 – provides three serial communications ports, a watchdog

timer, and 384KB ash-updated memory.

Locking the setup menu

With the facility for up to ve preset setups, and the ability to temporarily trim many settings, there

should little need to use the Setup Menus once the system is fully installed. Many of the AV9 settings

in the Setup Menus require specialist knowledge and measurement. Access to the Setup Menus may be

locked out to prevent changes being made to the settings by inexperienced users.

To lock the setup menus, press the OK, TUNER and DVD-A buttons on the front panel together at the

same time. ‘Setup Menus Locked’ is displayed.

Similarly, to unlock the menus, press the same three buttons together at the same time.

Programming via the RS232 input

Re-programming the AV9 with new operating software is possible via the RS232 control input, but this

should only be carried out by trained technical personnel.

Use the RS232 Connection

with a suitable lead to the re-programming computer. Locate the

Programming button

which is adjacent to the S-video inputs.

To re-program, the AV9 must rst be turned off. Press and hold the PROG button while powering up

the AV9. Note that the front display is blank in programming mode. Follow the operating instructions

provided with the update software. When reprogramming is complete, turn the AV9 off then on again ten

seconds later to restore normal operation with the new software.

Utility software

AV9 Programmer

The AV9 programmer utility allows future software upgrades to be installed and allows backup and

restoration of the unit’s settings via the RS232 port on the back of the AV9.

The following equipment is required:

IBM PC compatible computer running Windows 98 or later.

Software – ARCAM AV9 Programmer utility (included on the AV9 CD-ROM).

Lead – RS232 9-way female D-type to 9-way female D-type (i.e., a null modem).

Full Instructions on how to install and operate the Programmer utility are available in the root directory

of the CD-ROM.

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Arcam FMJ AV9 User Manual Page 37

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