User's Manual
5.
MAINTENANCE
5.1.
ASRC selftest
If there is any doubt on the correct operation of the ASRC, it can easily be checked
by running the ASRC selftest. The selftest works by passing an internally generated
sine wave forward and back through the ASRC (running two conversions, from
96kHz => 88.2kHz => 96kHz) on all 64 channels.
To enter ASRC selftest mode: Press
Recall
, move to
☼
Function
, move to
☼
11
, press
OK
, turn the encoder until the seven-segment display shows
03
("ASRC selftest") and press
OK
.
The resulting data is output on the headphones where it can be verifed by
listening to it. The ASRC works correctly if a clean, non-distorted 1000Hz sine
tone can be heard on all channels.
Use
☼
Ch
to listen to the appropriate channel. The output volume can be
adjusted using
☼
Vol.
The resulting data is also output on MADI optical (channels 1-32) and MADI
coaxial (channels 33-64) as two 96kHz/32ch streams, clocked by the internal
clock of the multiverter. You can use any signal meter to check the result; the
output level should be -20dB on all channels.
To exit ASRC selftest mode, press the
Back
⮌
button.
5.2.
Determining ASRC Firmware/Hardware version
To check the frmware and hardware version of the ASRC module:
Press
Recall
, move to
☼
Function
, press
OK
, move to
☼
12
, press
OK
Move the cursor to
-
☼
EX
to show the ASRC Firmware Major Version number
-
☼
Ch
to show the ASRC Firmware Minor Version number
-
☼
Vol
to show the ASRC Hardware Version
in the seven-segment display.
5.3.
ASRC Firmware Upgrade
Although seldom required, the ASRC frmware itself can be upgraded.
This is done similar to the multiverter upgrade, with the diference that the USB
plug has to be connected directly to the ASRC (not on the multiverter).
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