Setting System Functions (Pull Up/Pull Down, Varispeed, Etc.); Global; G L O B A L V A R I S P E E D P U L L R A N G E; Pulls - Mutec iclock Operating Manual

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Setting System Functions
System parameters allow for setting functions that affect no specific output
clock formats but all output signals or the global device functionality of
iCLOCK. Four menu pages named GLOBAL 1/4 to GLOBAL 4/4 are provided
by iCLOCK standard version.
Functions and settings on the GLOBAL 1/4 menu page:
G L O B A L P U L L s
|
1 / 4 O F F

GLOBAL 1 / 4

GLOBAL 1/4, 2/4, 3/4, 4/4
Specifies the name of the currently selected GLOBAL page.

PULLs

(function)
With iCLOCK standard version, four different pull-up/down corrective factors
can be set for film–video–audio transfers. These settings only affect audio
clock signals but not video generator signals. The factory default is OFF.

OFF

(setting)
OFF With this setting, all audio clock signal rates will be output unchanged.
+ 0.1 %
(setting)
+ 0,1 % This setting will increase all audio clock output rates by 0.1 %. This
factor is required for transferring NTSC video to film.
- 0.1 %
(setting)
- 0,1 % This setting will decrease all audio clock output rates by 0.1 %. This
factor is required for transferring film to NTSC video.
+ 4.16 %
(setting)
+ 4,16 % This setting will increase all audio clock output rates by 4.1666 %.
This factor is required for copying film to PAL video.
- 4.0 %
(setting)
- 4,0 % This setting will decrease all audio clock output rates by 4.0 %. This
factor is required for transferring PAL video to film.
VARISPEED
(function)
VARISPEED This function allows for detuning the synthesizer in steps of
0.0001 % in relation to the selected nominal rate (e.g. 44.1 kHz, 96.0 kHz, etc.).
The maximum setting range of the varispeed function is ± 20.0 % but may be
limited by settings such as the pull-up/down factors or the pull range as well
as by instabilities of the synthesizer signal caused by clock source deviation.
1 x
Enable the varispeed function by pressing the up/down cursor buttons
one time. (The cursor automatically jumps to the rightmost digit)
3 x
Move the cursor to the desired digit (e.g. 0.1%) using the left cursor button.
Select the desired value with the up/down cursor buttons (e.g. 1 x + 0.1%)
1 x
ENTER
Confirm the setting by pressing the ENTER button.
Entering varispeed values and moving the cursor
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V A R I S P E E D P U L L R A N G E
+ 0 . 0 0 0 0 % + / - 5 . 0 %
(page name)
0
1 x
1
Setting Pulls and Varispeed
!
PULL and VARISPEED settings will
be not stored when switching-off
the device!
Unlike conventional clock generators,
iCLOCK is capable of synthesizing pull-up/
down factors and varispeed in every mode
of operation. This is regardless of whether
the synthesizer is synchronized internally or
by an external source!
More Pull-Up/Down Factors
For special-purpose applications, new pull-up/
down factors can be implemented into the sys-
tem by means of a software update. Practically
any factor or algorithm can be applied. The
synthesizing accuracy is in the µHz range.
For more information or a proposal, send an
e-mail message to
tecsupport@iCLOCK-net.de
You may also call us or send a fax:
Phone 0049-(0)30-746880-0
Fax 0049-(0)30-746880-99
Example
The synthesizer is synchronized to an external
source with a detuning of –5%. In addition,
a varispeed of –16% has been configured.
In this case, the synthesizer would correct its
output rate only to an amount of –15% of
the set varispeed as the total detuning of the
input source and the varispeed are –21%,
which exceeds the permitted range by 1%.
Varispeed values are set using the up/down
cursor buttons. Note that the change will
be applied as the button is pressed. Pressing
ENTER will confirm the selected value.
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