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6
Machine Head
Connections
Before connecting the MACHINE HEAD switch the power off at
all connected units.
The rear panel provides AES/EBU- and S/P-DIF-inputs and
outputs. Any additional channel, status and user-bits are
passed through unaltered, and the outputs can be used at the
same time if required.
The M
ACHINE HEAD operates with 24 bit word width. It accepts
16 to 24 bit inputs and will create output signals according to
the input resolution.
For synchronisation purposes W
ORDCLOCK IN and WORDCLOCK
THROUGH BNC connectors are fitted with a switchable 75 Ohm
termination.
MIDI IN and MIDI THROUGH connectors allow presets to be
selected via MIDI program change commands.
For easy upgrade of future software releases, the rear panel
offers RS-232 interface for PC and RS-422 interface for MAC.
Installing Updates:
Note: All presets will be lost after installing a new software version!
1. Connect your computer with the MACHINE HEAD via a
serial port with a standard Z-modem cable.
RS-232 for PC and RS-422 for MAC.
2. Open a terminal program like “Hyperterminal” on PC
and make the following adjustments:
Baud rate: 9600; Stop bit: 1; Parity: none; Data bit: 8;
Handshake: no; Transfer mode: ZMODEM
3. Switch on the M
ACHINE HEAD and depress both
P
RESET UP and PRESET DOWN until the LC-display says
“wait for Zmodem download“.
4. Load the update file into your terminal
program and send it to the M
ACHINE HEAD. The LC-
display shows the progress of the download in kB.
5. After successfully installing the new software version the
LC-display says “download valid”.
6. Switch the MACHINE HEAD off and on after 4 sec. The
new software version number is displayed in the first
I
NFO page (simultaneously depress STORE and APPLY;
also refer to C
ONTROL ELEMENTS No. 9, I
NFO).
7. If an error occurred during download the LC-display says
“download failed”. The M
ACHINE HEAD now waits for a
new download. Please check all adjustments on your
terminal program and try again. If you are still un-
successful contact your local dealer.