230
instruction Manual
Aphex Systems Ltd. Model 230Page 8
230
master voice channel
Page 9Aphex Systems Ltd. Model 230
Figure 3-2 Daisy Chaining the Local Master Clock
Internal
Clock
230 #1 230 #2 230 #3 230 #4
In Out In Out In Out In Out
Terminate here or continue
coax cable to digital recorder/
daw using a 75Ω termination.
External
Clock
External
Clock
External
Clock
WC OUT jack.
3.8.3 WC OUT
This jack is directly tied to the WC IN jack to facilitate
daisy-chaining multiple units to a master clock source
when the unit is operating in external clock mode.
When the Model 230 is operating in internal clock
mode, the WC OUT jack is disconnected from WC IN
and instead is connected to the unit’s internal clock
source. Thus, any Model 230 operating in internal
clock mode can serve as a master clock source when
required. The internal clock is derived from a low jitter
crystal oscillator and is fully competent as a master
clock.
3.8.4 Local Clock Mastering
In the absence of a suitable external clock source, you
can use one Model 230 as a clock master and slave
everything else to it. For example, to synchronize a
group of Model 230’s, simply set the first unit to
internal clock mode and all the others to external.
Daisy-chain the WC OUT of the first unit through the
WC IN and WC OUT of the remaining units. This way
all digital audio outputs will be locked together to the
first unit’s clock reference. You can also loop the clock
output of the last unit in line to your digital recorder
or workstation, but remember to terminate the last
unit in line.
3.9 POWER SUPPLY
The 230 is internally powered from a standard IEC
power receptacle on the rear panel. Be sure you use a
power cord that is approved for use in your jurisdic-
tion.
Soft-start, overload foldback limiting, and accros-
the-line voltage spike protection is incorporated to
protect the power supply from damage that might
be caused by component failure or power line distur-
bances. If the internal fuse blows out, a catastrophic
failure has occurred and simply replacing the fuse will
not fix the problem. Due to the extensive protective
measures used, it is highly unlikely a catastrophic
power supply failure will ever occur. However, if it
does, you should contact the factory or a competent
service technician to affect repairs. There are no user
serviceable parts inside.
3.9 Cough Switch
Voice artists/actors often find it nec-
essary to clear the throat, sip a bev-
erage, or cough during narration.
To hide the fact, a convenient mute
and unmute is needed. Here it is, the
model 230’s Cough Switch! Any type of switch wired
to a mono phone plug will work. Usually, a desktop
box mounted silent pushbutton is preferred, as it can
be accessed most readily. Aphex does not presently
supply the cough switch itself, but one can be easily
fabricated by the installer.
85 to 265V~, 50 to 60Hz
ACCEPTABLE POWER RANGE
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