Furman PRESTIGE Série Guide De L'utilisateur page 7

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below that level, its capacity must be derated at approximately 113 milliamperes per volt. (See graphs on back page.) As a practi-
cal matter, therefore, to cope successfully with worst-case brownout conditions, you should plan your total load so that it does not
exceed 12 amps, or 1400 watts. Please note that this refers to the aggregate power requirement of all equipment plugged into the
P-1800 AR, not to each individual item.
Extreme Voltage Shutdown Indicator:
The Extreme Voltage LED indicator is normally off. It is located within the meter lens assembly directly above the blue voltage me-
ters LED's, though during normal use it will NOT be visible.
The Extreme Voltage indicator monitors a hazard common in the entertainment industry, as well as remote broadcast: wiring faults,
such as accidental connection to 208VAC where 120VAC is expected, or an open series neutral from a 208 to 240VAC electrical ser-
vice. The Furman 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 the P-1800 AR, the Extreme Voltage indicator will illuminate to a bright red if the input voltage is
above the extreme voltage cutoff. When this occurs, power will not be applied to the P-1800 PF R'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 outlets and the
Extreme Voltage LED will light.
NOTE: If the mains power is above the high cutoff voltage and has caused the EVS circuit to remove power from the Furman's
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 perhaps changing the AC source.
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 TVSS device to absorb without some degree
of damage (such as a direct lightning hit in an outdoor application). In the rare instance that this occurs, the green "Protection OK"
LED indicator (located to the lower right of the voltage meter) will not illuminate. 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.
USB Charger:
The Furman P-1800 AR's USB charger provides an easy way to recharge many popular electronic accessories as well as cellular
communication devices by simply plugging the re-charge cord into the front panel socket. Please note: as there are currently many
standards for USB, some devices may not be compatible with our charger.
Rear BNC Connector:
The Furman P-1800 AR features a rear rack BNC socket which will accept any 12 VAC (0.5A) gooseneck lamp assembly, (such as the
Furman GN-LED or GN-I). Simply slide the BNC plug over the socket and rotate clockwise until the connector snaps into the locked
position. The rear rack lamp can be powered on or off with the rear light switch which is adjacent to the BNC connector.
Transformer Plug ("Wall Wart") Secure Straps:
The Furman P-1800 AR features three rear panel AC outlets that are widely spaced for plug transformers (wall warts). Additionally,
these may be secured for transport with the Velcro™ Secure Straps that are included in the product carton. Each strap must be first
secured with the supplied Philips screw, and the Furman Secure Strap will tie the "wall wart" (transformer) in place.
Isolated Outlet Banks:
The Furman P-1800 AR features eight rear-panel outlets in 2 isolated banks. If you are connecting digital and analog equipment to
the P-1800 AR, it is recommended to connect the analog equipment to "Bank A" and digital equipment to "Bank B" (or vice-versa)
to minimize electrical crosstalk.
TROUBLESHOOTING
1.) Symptom: No power to the AC outlets; "Protection OK" indicator is not lit.
Possible Cause: Either the AC outlet to which your P-1800 AR is connected has no AC voltage present, or there has been damage to
the unit's circuitry.
Action Needed: Plug the P-1800 AR into an AC receptacle where a nominal 120 VAC is present. If the problem persists, the internal
circuitry may be damaged and the unit will require factory service (see "Service" section below).
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