Owner's Manual

FEATURES (Continued)
Sequenced Outlets
Most sound reinforcement professionals realize the
majority
of
equipment damage occurs while devices
are either powered up or powered down. Power
sequencing
allows
AN
equipment to be powered
up
in
stages which gives equipment time to sta-
bilize before the next stage
of
equipment is ener-
gized. When powering down, the sequence order
is reversed, which results
in
a soft landing for your
expensive AV equipment.
Although there are many benefits to power sequenc-
ing, perhaps the most well-known
is the elimination
of
"Speaker Pop". Speaker Pop is the loud popping
noise that occurs when
AV
components are pow-
ered up simultaneously or out
of
sequence. Most
people have experienced
Speaker
Pop.
In
addition
to being extremely unsettling,
Speaker
Pop can
stress or damage sound system components such
as amplifiers and speakers. By delaying the activa-
tion
of
the amplifiers until the low level
equipment
has had the opportunity to stabilize,
Speaker
Pop is
virtually
eliminated.
Power Sequencing is also useful
in
preventing nui-
sance breaker trips. Amplifiers can have very high
in-rush currents at power up.
If
multiple amplifiers
are activated simultaneously, the in-rush currents
sum together and can exceed the capacity
of
the
branch circuit which can cause the circuit breaker
·
to trip. The Furman
M-8S
prevents breaker trips by
sequencing (offsetting) power activations over time.
This offset sequence
allows
transient load currents
to occur over several seconds rather than
all at
once, which prevents nuisance breaker trips.
The turn-on delay intervals are factory preset to 5
seconds per stage. This delay can be increased or
decreased using the rear panel trim pot adjustment
(see
"Adjusting
the Delay
Interval"
for details).
In
the event
of
a power outage,
all
equipment
plugged into an
M-8S will lose power simultaneously.
When power is restored, the behavior
of
the
M-8S
will
depend upon switch settings and how the unit
has been configured:
• If
the
M-8S
has been configured for Maintained
mode and the Sequence switch is
in
the ON
posi-
tion, the delayed outlet groups
will
turn on
in
the
normal delayed sequence order when power is
restored.
• If
the
M-8S
has been configured for Momentary
mode the delay outlets
will
remain off until activated
by the end user.
Merit
Class Surge Protection
The M-8S
features Furman's Merit Line to Neutral
Surge
protection and
RFIIEMI
filtration. The Merit
filter is designed to dissipate voltage transients and
protect your equipment from surge events. The
M-8S
is also equipped with a Protection
OK
LED
which provides a visual indication that the
M-8S'
surge protection circuit is operational.
Thermal
Circuit Breaker
Resettable 15 Amp circut breaker.
Sequence On/Off Switch:
The front panel sequence on/off switch
sequentially
powers
on
and off the DELAY
1,
2,
and 3 outlets.
The front and rear panel
UNSWITCHED
outlets are
always on when power is applied to the
M-8S.
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