Furman IT-REFERENCE 7i, Руководство пользователя

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daisy-chained neutral from a homes breaker box). The Extreme Voltage Shutdown (EVS) circuit senses voltages that are so
high that operation would be impossible and shuts the power down before damage can occur. Upon initially applying power
to these units, the Extreme Voltage indicator LED will light if the input voltage is above the extreme voltage cutoff, and power
will not be applied to the unit’s outlets. If the unit has been operating with an acceptable input voltage and subsequently that
voltage exceeds 140V, it will shut off power to the outlet and the Extreme Voltage LED will light.
Protection OK Indicator – Front Panel Blue LED Power 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 completely, 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 unit’s clamping voltage rating will be compromised. The unit must
be returned to Furman Sound, or an authorized Furman’s 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 first checking the
source of the problem and changing the AC source if necessary.
Satellite – Cable Transient Voltage Surge Suppressors
The IT-Reference 7i features transient voltage surge suppression for both cable and 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® – DVR 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 Cable and/or
Satellite connectors.
NOTE:
It is not possible to make an in-line cable or satellite protector “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 sacrifice itself after a catastrophic event. These protection devices are
extremely robust however, and it is unlikely that any damage will occur unless the connector is physically deformed via a lightening
strike.