IT-REFERENCE 15 OWNER’S MANUAL
outlets. If the unit has been operating with an
acceptable input voltage and subsequently that
voltage exceeds 137V, it will shut off power to
the outlet and the Extreme Voltage LED will
light.
Protection OK Indicator:
Although the Furman SMP+ circuit assures
virtually maintenance free protection from
transient voltage spikes and surges, nature
has a way of occasionally creating electrical
forces that are beyond the capabilities of any
Transient Voltage Surge Suppression device
to absorb without some degree of damage. In
the rare instance that this occurs, the blue
LED located in the center of the front panel
will dim, even though AC power is present at
the unit’s outputs. If this happens, some level
of protection from voltage surges will remain,
but the Furman’s clamping voltage rating will
be compromised. The unit must be returned
to Furman Sound, or an authorized Furman
Service center for repair.
NOTE: If the mains power is above the high
cutoff voltage and has caused the unit to
remove power from its outlets, it cannot restore
power without the operator manually turning
the unit off, then on again. Avoid turning the
unit back on, without fi rst checking the source
of the problem, and perhaps changing the AC
source.
Telco – Satellite – Cable Transient
Voltage Surge Suppressors
The IT- Reference 15 features transient voltage
surge suppression for both standard telephone
lines, as well as cable or satellite lines utilizing
standard coaxial connectors. As these surge
suppressors are in-line, they will require an
additional cable to connect from their output to
the control device requiring protection.
All in-line surge suppressors feature
our exclusive ground contamination free
technology. This aids in eliminating audio
buzzing, and the video hum-bars that can
result from typical in-line suppressors. Further,
our cable and satellite suppressors are TIVO
friendly as well as HD-Digital Television
ready. Both DC carrier signals as well as high
bandwidth signals can pass through our circuit.
In fact the bandwidth is less than 0.1dB loss at
1GHz!
To connect your cabling to these in-line
protectors, simply follow the in and out
indications marked next to the Telco, Cable
and Satellite connectors.
Note: It is not possible to make an in-line cable
or satellite protector “virtually maintenance-
free” as we have accomplished with the 120
VAC line. This would necessitate limited
signal bandwidth that would not allow the
signal to pass. Under extreme conditions, it
is possible that the surge suppression in one
of these devices could sacrifi ce itself after a
catastrophic event. If the telephone, cable
or satellite signal will no longer pass through
our protector, please contact your local
service representative, installer or Furman for
servicing. Since these circuits are modular,
replacement may be accomplished in seconds
with a new TVSS module. To test this, simply
disconnect the incoming and out going cable
from the IT-Reference 15. Connect the
incoming connector to the component that
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