MUTEC MC-3.1 Smart Clock - Manual (Page 11)

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Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 3
11
INSTALLATION
Content of the Box
The unit was packed carefully. Nevertheless we recommend to check the
content directly after opening the package:
1 x MC-3 SMART CLOCK or MC-3.1 SMART CLOCK SD
1 x Power cable
1 x Manual
4 x Rubber feets
Placing the Device
The unit should be set up as closely as possible to the devices to which it
will be connected, so as to avoid excessive cable lengths. Use the 4 rubber
feets enclosed with the appliance and stick them symmetrically on the
bottom side of the unit to protect the enclosure and supporting surface
from being damaged. When the unit is installed in a rack, the rubber feets
cannot be attached to save space.
The device can be mounted into a standard 19“ rack and will require 1
unit. For this installation MUTEC offers an optional set of rack ears (MW-
05/19, order no. 8020-035). The mounting depth including the terminals is
175mm/6.9“. Another 150mm/5.9“ should be added for the required cables.
Additional slide-in rails on the rack inside are recommended for safe instal-
lation. This will also avoid long-term mechanical deformation of the housing.
Wiring the Word Clock and Video Interfaces
To allow for the synchronization of signals, the interfaces of all devices
involved must be properly connected to each other, so as to ensure a logical
signal flow. Always be sure to connect the Word Clock outputs of the MC-3
SMART CLOCK and MC-3.1 SMART CLOCK SD to the corresponding input of
the devices you wish to synchronize. Cable lengths should be kept as short
as possible to minimize signal losses and/or interferences!
For the transmission of Word Clock or video signals electrical, unsymmetri-
cal cables with a resistance of 75 Ω and BNC connectors on both ends are
used. Typically, such cables are marked »RG-59U, RG59B/U«.
Additionally, you should make sure that the Word Clock or video inputs to
be connected to the MC-3 SMART CLOCK’s or MC-3.1 SMART CLOCK SD’s
outputs have a 75 Ω terminating resistor! Most Word Clock or video inputs
allow for enabling/disabling the termination with a so-called »termination-
switch«, which may be located on the outside or inside of the device.
For devices which have no termination of the Word Clock input, e.g. RME
Hammerfall with Word Clock i/o, Alesis BRC or M-Audio ProFire Light-
bridge, you can use an additional BNC-T piece to terminate the input. Plug
the T piece with its center connector into the input of the receiving device.
Then, connect the cable coming from the MC-3 SMART CLOCK or MC-3.1
SMART CLOCK SD to one of the lateral connectors, and the other connector
of the BNC-T piece to a 75 Ω resistor forming the BNC termination.
Basically, you should avoid »looping through« Word Clock leads by means
of passive BNC-T pieces to preserve the signal quality, as level drops will be
the result. If there is no other way to wire your set-up, please make sure
that all Word Clock inputs (except for the last device in the chain) have
their terminations disabled! In a serial Word Clock chain only the last clock
input should have a termination! Never connect more than three devices in
series to one output!
Before installing the unit the section
SAFETY INSTRUCTIONS located
at the beginning of this manual
should be read carefully.
!
The condition of the packaging
material and the device should
be checked carefully additionally.
If there are any damages please refer to
SAFETY INSTRUCTIONS, Initial Operation,
and WARRANTY REGULATIONS.
!
Never expose the device and
accessories to rain, moisture,
direct sunlight, or excessive heat
produced by radiators, heaters, or spot
lights! Sufficient air circulation in the
environment of the device must be ensured!
!
We recommend using high-grade cables
with a good shielding for your clock signal
leads, in particular, if you need to transmit
Word Clock x 256 (so-called Super Clock)
signals over greater distances. In any case, a
length of max. 10 meters (approx. 30 feets)
should never be exceeded!
It is imperative that the lengths
of all cables connected are largely
the same, as this is the only way to
ensure that all devices will be synchronized
in phase (exception: cable tolerances).
Please make sure that the cable used has a
resistance of 75 Ω, in compliance with the
specifications! If a cable with a different
resistance is used, a dramatic deterioration
of the signal quality can be the result! In
this case, the perfect synchronization of all
devices involved could be impaired.
!