Mutec iclock Operating Manual Download

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Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 16

REF 1, REF2, REF3

(function)

This function allows for selecting three clock sources supported by the sys-
tem and for assigning them to a clock source slot. The sources will synchro-
nize the system in their numeric sequence (REF1

→

REF2

→

REF3).

INTERN

(setting)

INTERNAL Selecting the INTERN setting synchronizes the synthesizer to the
internal video reference generator that supplies all audio clock signals in
compliance with AES11 and EBU R83. As internal synchronization is the ulti-
mately selected source, no other sources will be left afterwards. Therefore,
when selecting INTERN for REF1, the REF2 and REF3 functions will auto-
matically be assigned with the »NO REF« setting.

R E F 1 - 3

R E F 1

R E F 2

R E F 3

S Y N C

I N T E R N N O R E F N O R E F R E F 1

| <

REF1-3 page

Error Messages

If one of the messages OSCI FAIL,
MAIN1LOST or MAIN2LOST is

displayed, safe operation is not guaranteed!
Contact the technician in charge
immediately!

Setting REF1 – 3

The most important clock source
in your studio environment should

always be assigned to REF1! This is critical
for proper completion of the CYCLE-SYNC
setting. Afterwards, the other REF slots
should be assigned with sources in a
hierarchical order.

OSCI FAIL

(status message)

OSCILLATOR FAILED, indicates that the internal reference clock oscillator has
failed.

MAIN1LOST

(status message)

MAIN 1 LOST indicates that the primary supply voltage or the primary in-
ternal power supply have failed. If this status message is indicated, contact
the technician in charge immediately! The message is displayed only if the
iCLOCK is equipped with a redundant power supply (iCLOCK dp version,
item no. 8015-046).

MAIN2LOST

(status message)

MAIN 2 LOST indicates that the secondary supply voltage or the secondary
internal power supply have failed. If this status message is indicated, con-
tact the technician in charge immediately! The message is displayed only if
the iCLOCK is equipped with a redundant power supply (iCLOCK dp version,
item no. 8015-046).

OUTPUTs

(function)

Here, the set clock rates of all outputs are displayed alternately as a
»ticker«. This allows for checking the settings directly with no need for
changing to the relevant menu pages.

The following clock signals or rates are factory defaults:

PAL/NTSC VIDEO OUT 1 + 2 = PAL Black + Burst
WORD CLOCK OUT 1 – 4

= 44,1kHz

AES3/-11 OUT 1 + 2

= 44,1kHz

S/P-DIF OUT

= 44,1kHz

Selecting and activating Clock Sources

The REF1-3 page allows for selecting the clock source of the internal synthe-
sizer. The clock formats supported by iCLOCK are listed in the adjacent table.
The factory defaults are REF1 = INTERN, REF2 = NO REF, REF3 = NO REF.

If one of the synchronizable clock sources is selected, the respective signal
format is marked with an index (1 + 2) referring to the two universal clock-
source inputs INPUT 1 and INPUT 2. Thus, the input clock signals can be
routed freely to these two system inputs. The AES format, however, is an
exception as balanced AES/EBU signals can be received by INPUT 3 only.

When selecting clock sources, the system proceeds logically. For example,
if the PAL1 source (PAL video on INPUT 1) has been selected under REF1,
it will not be available anymore for REF2 and REF3. This means that only
sources with an index of »2«, »AES«, »INTERN«, and »NO REF« can be
configured. Likewise, a clock source programmed for REF2 will not be
available for REF3 anymore.

If a clock source is routed to one of the REF slots it has to be activated
for synthesizer synchronization. Therefore the last modified REF slot
is displayed in the SYNC function menu automatically. Moving the
cursor to this position and pressing the ENTER button will activate the
synchronization process to the new clock source immediately.

Activating Clock Sources

After selecting a new clock source
under REF1 – 3, it is imperative to

move the cursor to the SYNC function and
to press ENTER for activating the selected
reference for synchronisation!