Indicator Leds - Furman IT-REFERENCE 7i Manual Delpropietario

Suggested AC Connection
AC Cord
Soft Start - Continuous Use and Break-In Time
When power is first applied to the IT-Reference 7i, (the front panel breaker- power toggle must be switched to the "on" position)
the Soft Start feature is activated. There is an audible "clack" when the IT-Reference is first turned on or off. This sound is
produced by the Soft Start circuit's 30 Amp relay engaging or disengaging. There is virtually nothing in the IT-Reference 7i's
construction, design, or componentry to wear over the life time of the product, and there is no power draw from your electric
service meter aside from the LED power indicator, relay, and GFCI protection circuit. For this reason the IT-Reference 7i may be
left with its power engaged permanently at a cost of pennies per month. This is an added benefit, as many audio/videophiles
find performance improves significantly when leaving low-powered components permanently charged (turned on). In fact, this
is true of the IT-Reference 7i. Though it will function flawlessly right from its shipping carton, the performance of its circuit parts
will improve after approximately two weeks of continuous use or "break-in."
Ground Fault Interrupter (GFCI)
The IT-Reference 7i's four "Discrete Symmetrical Filtered AC outlets" incorporate a symmetrical AC power output, whereby both
the neutral and positive leads of the AC cable run at 60 Volts AC in opposing polarity, referenced to ground (0 Volts AC). This is
but one of the IT-Reference 7i's advantages over other AC-filter/protection designs.
Even though virtually all domestically produced electronic equipment are designed to detect electrical shorts and other
potentially dangerous equipment problems in the line lead referenced to its Neutral, this is inadequate when power is
symmetrical. With the IT-Reference 7i's symmetrical outlets, both neutral and positive legs contain 60 VAC relative to their
Ground tab. This is not a problem or safety hazard, unless there is a defect in either the IT-Reference 7i's transformer, or the
power supply of a connected component. In this instance, we need to assure that safety is always maintained. The solution is our
GFCI (ground fault circuit interrupter).
The Furman GFCI detects any imbalance in the current flowing in the two hot legs. The missing current is presumed to be
flowing through the ground conductor (the round pin on an AC outlet). Ground current often indicates a dangerous partial
or full short circuit. If an imbalance is detected, the GFCI will trip the outlets internal breaker, and the Duplex AC outlet will no
longer supply AC power of any sort. To restore operation, correct the fault, press the reset tab located between the two black
symmetrical AC outlets. 5 mA of current is enough to cause the GFCI to trip; to troubleshoot this type of problem, start with
nothing connected to the IT-Reference 7i's symmetrical power outlets. Then, add each piece of equipment until the GFCI trips.
Contact the manufacturer of the suspect unit for possible solutions.

Indicator LEDs

Extreme Voltage Shutdown Indicator
This LED is normally off. It monitors AC wiring faults – for example, accidental connection to an open neutral from a 208 or
240VAC feed (this is a common occurrence if the AC outlet source is not a dedicated line, but instead has been wired with a

IT-R 7 O '
efeRence i wneR s
Audio
Pre-Amplifier
Cable / Satellite
Protectors (x3)
M
anual
Cable/Satellite
Box
LCD/Plasma Monitor
or Video Projector
DVD/HD-DVD/
Blu-Ray Player