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 Specications
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
gq
with a suitable lead to the re-programming computer. Locate the
Programming button
fk
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.
