MUTEC MC-3.2 Smart Clock HD - Manual (Page 17)

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Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 16
17
AUDIO CLOCK SETTINGS
CLK
BASIS
Within this function menu you may select the required basis clock
frequency for your studio set-up. This selection serves as the basic setting
for all WCLK output pairs as well as the AES/EBU and S/PDIF outputs. There
are 7 different basis clock rates adjustable by pressing the SELECT key for
different times. The LEDs display the selected clock rate as follows:
The factory default is set at 44.1kHz.
PULLS
This function menu enables you to set different so-called ‘pull factors’.
These correction factors are used in post production environments where
frame rate differences between film and video standards need to be
compensated. The pull factors influence the adjusted clock rates of all Word
Clock, AES/EBU and S/PDIF outputs. The frequencies of the video reference
generators are, however, unaffected.
Select the percentage by which the output clock rates are to be corrected
by repeatedly pressing the SELECT key. No correction factors are generated
when no LED lights! The individual values result from the below mentioned
mathematical relationships (put into brackets).
The names of the LEDs in this menu:
+ 0.1%: Pull up with 0.1% (1001/1000)
- 0.1%: Pull down with 0.1% (1000/1001)
+ 4.1666%: Pull up with 4.1666% (25/24)
- 4.0%:
Pull down with 4.0% (24/25)
CLK
MULTIPLIERS
These multiply functions are separately available for all 4 Word Clock
output pairs as well as for the AES/EBU and S/PDIF outputs. Their
numberings are aligned to the output numbers. Select the prefered output
with the MENU key and choose the needed multiply factor by pressing the
SELECT key accordingly. The factory default is set to x 1.
WCLK multipliers 1 – 4
For every of these Word Clock output pairs are 4 multipliers available:
x 1, x 2, x 4, x 256
The multiply functions »x 1, x 2, x 4« multiply all available basis clocks up to
the highest possible Word Clock rate of 768.0kHz (192.0kHz basis clock x 4).
The function »x 256« multiplies only the basis clocks 44.1kHz and 48.0kHz
to output the so-called Super Clock rates necessary for older digidesign
ProTools™ MX systems. If a different basis clock is selected, the »x 256«
function is not accessible.
The factory default is set at x 1.
32.0kHz
176.4kHz 192.0kHz
44.1kHz 48.0kHz 88.2kHz 96.0kHz
CLK MULTIPLIERS
PULLS
CLK BASIS
During normal operation of MC-3.2
SMART CLOCK HD, all LEDs must
be off !
!