Danish Interpretation Systems
User Manual
Manual 01 10 04479
29
Installation guide
General installation rules
Standard portable units
Standard microphones MU 4040 and DM/CM
44xx:
•
Always use DIS-type extension cable (special
product cable) to obtain full performance of the
system. Only DIS-type cable can be used.
•
The maximum cable length between any two
units connected together is 100 m.
•
The total cable length in one chain must not
exceed 200 m (which includes the 2 m cable on
each portable unit).
•
The units in each chain must be connected one
after the other (daisy chain), i.e. it is not
allowed to make star point configuration.
•
Always switch off the main power on the
central unit before removing or adding units to
the chain. Omission to do this might damage
the connectors.
•
Keep the length of all cables as short as
possible to maintain high audio quality and low
noise operation.
•
Avoid having a cable connected to the system,
when there is not a unit (DM 4xxx or CM
4xxx) connected in the other end. The open
cable with no termination might cause
problems for the data transmission and pick up
audio noise.
The total cable length of a chain can be extended to
up to 300 m, but this might cause a slight drop in
audio performance: A slight raise in cross talk from
data-signals and possibility for clipping of very
high audio due to drop in power supply voltage.
Control Link Cables
•
Use standard flexible cable 4x2x0,25 mm
2
with
screen.
•
The total cable length must not exceed a length
of 300 m.
•
The units must be connected one after another
(daisy chain); i.e. it is not allowed to make star
point connection. Always have a male
connector in one end and a female in the other
end.
•
Always switch off mains power on all central
units (CU 4005/CU 4010) before removing or
adding MC 4000 or CU 4005/CU 4010.
Omission to do this might cause damage to the
connectors.
•
All CU 4005/CU 4010 units (and MC 4000
units) must be powered or the system will not
start up.
•
Avoid having a control link cable connected to
the system, when there not is connected a unit
(CU 4005/CU 4010 or MC 4000) in the other
end. The open cable with no termination might
cause problems for the data transmission and
pick up audio noise.
MC 4000 Microphone Controller
•
The maximum number of MC 4000 units in a
system is two.
•
The cable length between any CU 4005/CU
4010 and an MC 4000 must not exceed 50 m
using 4x2x0,25 mm
2
cable.
•
With 0,5 mm
2
cable (for 0V and +15V) this
can be raised to 75 m.