Antelope Isochrone OCX Manual de usuario
Getting Started:
It takes only seconds to harness the benefits of the Isochrone OCX.
Connect the AC input to a power outlet.
Connect any devices you'd like clocked to the appropriate outputs on the OCX back
panel.
Power the OCX on via the power button on the front panel. Proceed to the next step
when the Oven light stops flashing and remains on.
Using the Frequency buttons on the front panel, select the sample rate you wish to
use.
Some devices will automatically sync to incoming clock from the OCX when
connected. Other devices may require additional configuration in order to utilize OCX
clock.
Note: When making initial connections, do so with the studio volume turned down.
Some devices may emit unpleasant sound until properly configured to accept incoming
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Isochrone OCX achieves the breakthrough clock stability by placing the quartz crystal in
an isolated, temperature controlled oven. Constant temperature control of the crystal
oscillator and a proprietary Jitter Management Module provide unprecedented sonic
benefits. Isocrone OCX takes the digital sound out of digital audio, giving you the audio
in its purest form whether connected to digital mixer, Pro-Tools system, DAW or digital
effects unit.
The amazingly stable Isochrone OCX can be taken to the
ultimate level by locking it to the most stable clock on Earth: the Atomic clock.
With added flexibility of being able to output multiple sample rates and the built in support
for Pro Tools, Isocrone OCX easily surpasses the industry standard AardSync II, and is
destined to become the new Gold Standard.
Front Panel
Power Switch
Oven Indicator
When the OCX is powered on, this LED will flash while the oven calibrates its
temperature. The LED will remain lit when this temperature is achieved. This process
only takes a moment, and verifies optimum hardware performance.
Atomic Clock Indicator
When lit, this LED verifies that the OCX is slaving to Atomic Clock via the corresponding
BNC input on the unit's back panel.
Sample Rate Selectors
Used to select the operating frequency of the OCX clock. All outputs (Word Clock,
AES/EBU, and S/PDIF) will output this frequency with the exception of outputs 7 and 8.
Outputs 7 & 8 can operate at this rate or provide user defined frequencies. See for
more details
Frequency Display
Displays the operating frequency of the OCX clock.
Contrast Knob
Adjusts the frequency display contrast.
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Front Panel
7
Alternate Sample Rate Switches for Word Clock outputs 7 and 8.
Word clock outputs 7 and 8 are capable of outputting frequencies different from the OCX
internal clock. The first five settings choose frequencies that are multiples of the internal
clock. The final setting, 256 WC, configures the output to generate 256 FS Clock (or
Superclock), a protocol used by some Digidesign components.
A red LED is present above each knob. When lit, it indicates that a valid sample rate is
selected. When flashing, the output has been configured to provide a frequency outside
the supported range (32kHz- 192 kHz).
For easy reference, the following chart indicates what frequencies outputs 7 and/or 8 will
provide depending on knob position and the selected sample rate.
7
32 kHz
44.1 kHz
48 kHz
88.2 kHz
96 kHz
176.4 kHz
192 kHz
X
X
X
X
X
44.1 kHz
48 kHz
WC / 4
X
X
X
88.2 kHz
96 kHz
44.1 kHz
48 kHz
WC /2
32 kHz
44.1 kHz
48 kHz
88.2 kHz
96 kHz
176.4 kHz
192 kHz
WC
X
X
88.2 kHz
64 kHz
96 kHz
176.4 kHz
192 kHz
2 WC
X X
X
X
X
X
X
X
176.4 kHz
128 kHz
192 kHz
4 WC
256 fs
256 fs
256 fs
256 WC
ALTERNATE SAMPLE RATE
SAMPLE RATE
X Output is not valid
Rear Panel
Power Connection
This IES AC connection accepts an input of 95-245 VAC 50/60 Hz. As a result, the OCX
automatically accommodates a full range of voltages, allowing safe use in any country.
Atomic Clock In and Thru connectors
The Atomic Clock Input allows the OCX to operate with unprecedented accuracy. This BNC
input accepts the 10MHz clock signal found on many atomic clock devices. The OCX can
utilize this ultra precise timing reference at any of its supported sample rates.
The Atomic Clock Thru allows additional devices to slave to Atomic Clock received by the
OCX. This allows additional OCX units to be present in the studio, all utilizing the benefits
of atomic clock in perfect sync.
Word Clock outputs 1-6 The sample rate provided by these BNC outputs always
matches the sample rate indicated by the Frequency Display on the front panel.
For best results, WC cables should not exceed 20ft. (6m.) in length. Longer cable runs
result in increased jitter and other clock errors.
Word Clock outputs 7-8
The sample rate provided by these two outputs can match the sample rate of outputs 1-6 or
be changed to alternate sample rates by using the corresponding knobs on the front panel.
AES/EBU outputs
Provide clock in the AES/EBU format. AES/EBU is the best option in situations requiring
long cable runs. AES/EBU accommodates cable runs up to 300ft. (90m.).
S/PDIF outputs
RCA connections provide clock via Coaxial S/PDIF.
For best results, S/PDIF connections should not exceed 10ft. (3m.).
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Rear Panel
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