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HomepageRecording HardwareMaster Clocks › Antelope Isochrone OCXHD
Antelope Isochrone OCXHD

It is crucial that a master clock be flawless, and the Isochrone OCXHD exists to meet this need. Uncompromised design has created the most stable, best sounding clock.

A new quality standard in professional master clocks
The Antelope's Isochrone OCXHD emerges as the new quality standard in professional master clocks. A master clock is the heart of the digital studio, essential to maintaining stability and preserving sonic integrity.

Jitter Management Module
Low jitter operation is critical in the modern studio. Antelope's Jitter Management Module implemented in Isochrone OCX makes jitter essentially nonexistent. Adaptive Loop Filtering is taken to the next level with a sophisticated DSP Based Multistage IIR filter, ensuring a jitter free, great sounding studio.

Oven-controlled environment
Oscillator accuracy is compromised when exposed to temperature fluctuations. The Isochrone OCX addresses this completely with oven control. The oven's temperature controlled environment allows unparalleled oscillator stability.

Atomic clock input
The Isochrone OCX can be locked to the most accurate clock on Earth - the Atomic clock. A studio can truly achieve perfect stability with the power of Atomic Clock. The OCXHD and Trinity are the only Master Clocks capable of locking to this unprecedented technology.
64-bit Acoustically Focused Clocking (AFC)
Antelope Audio game-changing clocking, powered by a 4th gen ACF jitter management algorithm

768 kHz clocking
OCX HD can output five different sample rates

Greater connectivity
AES/EBU, S/PDIF clocking outputs up to 192kHz, video input on BNC and Atomic clock input
Clock Aging
< 1 ppm per year

Digital Inputs
2x Word Clock Inputs up to 768kHz
1x Video Input accepting wide range of SD and HD video signals
1x Atomic Input
2x S/PDIF Inputs up to 192kHz
1x AES/EBU Input up to 192kHz
1x USB Input for control

Atomic Clock Input
10 MHz

Sample Rates Generated
32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384, 705.6, 768kHz

Master Clock Outputs
10x Word Clock Outputs up to 768kHz
4x AES/EBU Outputs up to 192kHz
2x S/PDIF Outputs up to 192kHz

Clocking System
4th generation Acoustically Focused Clocking
64-bit DDS
Oven Controlled Crystal Oscillator

Clocking Stability
<+/- 0.02 ppm, oven controlled at 64.5 C/148.1 F

Clock Calibration
<+/- 0.001 ppm

2.65 kg/5.84 lb

Power Supply
AC Universal Input ~95-245V, 20 Watts Max

Operating Temperature
0 - 50°C, 32-122°F

482.6 (W) 230 (D) 44 (H) mm
19 (W) x 9.05 (D) x 1.75 (H) inch
Price *
Free shipping in Canada. Conditions
Additional information
For more information about the Isochrone OCXHD, please visit the website of Antelope
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