888/24 I/O
10
8
After you have made the desired changes,
replace the top of the 888/24 I/O.
9
Replace the four front panel screws using
the hex wrench.
10
Replace the top screws with a Phillips
screwdriver.
Changing the Default Word
Clock Lock Port of the
888/24 I/O in D/A Stand-
Alone Mode
The 888/24 I/O defaults to “listening” to a
digital word clock signal on channels 1-2 of
its AES/EBU digital input ports. If you wish
to use a S/PDIF device as your source of
word clock, you must reset this default by
opening the 888/24 I/O and moving an in-
ternal jumper switch so that channels 1-2
of its S/PDIF digital input ports are used in-
stead.
☞
Refer to Figure 1 and 2 for details on jumper
switches and their default positions.
To change the default word clock lock port of
the 888/24 I/O in stand alone D/A mode:
1
Make sure that your computer and
888/24 I/O are turned off.
2
With a Phillips screwdriver, remove the
screws from the top of the 888/24 I/O.
3
Using the 1/16 inch hex wrench in-
cluded with the 888/24 I/O, carefully re-
move the front four panel screws as noted
on the bag containing the hex wrench.
4
Lift the top off of the 888/24 I/O.
5
Inside the left-front of 888/24 I/O’s chas-
sis, near the large FPGA chip, is a set of
three jumper switches, each with a remov-
able cap. Each of these switches controls a
different default function which is shown
in Figure 1 and 2.
6
Locate the jumper switch for the word
clock lock default (the back-most jumper)
and gently lift the cap off the 3-pronged
connector.
Figure 1. jumper switch location in the 888/24 I/O
Figure 2. Changing jumper switch settings
stand alone mode
default word clock lock switches
AES/EBU or S/PDIF
stand alone mode
default sample rate switches
44.1 kHz or 48 kHz
stand alone mode
DAC muting switches
in this position
DACs are muted
in this position
44.1 kHz is selected
44.1 kHz
48 kHz
unmute DA
Cs
mute DAC
s
AES/EBU
S/PDIF
remove jumper and
place it in desired position
