Rane FPL 44 Manual

Rane Blander FPL 44

Læs gratis den danske manual til Rane FPL 44 (4 sider) i kategorien Blander. Denne vejledning er vurderet som hjælpsom af 3 personer og har en gennemsnitlig bedømmelse på 4.5 stjerner ud af 2 anmeldelser. Har du et spørgsmål om Rane FPL 44, eller vil du spørge andre brugere om produktet?

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Side 1/4

OPERATING/SERVICE MANUAL

FPL 44

Q U I C K S T A R T

In deference to the ecological movement, Rane has made a commitment to keep its manuals

short and to the point. After all, we’re in the electronics business, not the tree industry. In

deference to your patience, we include this hurry-up section.

Inputs on the FPL 44 are 1/4" TRS balanced/unbalanced. Outputs are balanced 3-pin (XLR).

Positive appears on the tip of the input and pin 2 on the output; negative is the ring of the input

and pin 3 on the output. Signal ground is either sleeve or pin 1.

Front panel settings include four THRESHOLD controls, four BYPASS switches and four

SLAVE switches. The THRESHOLD controls set the level at which output limiting occurs.

BYPASS directly connects the input to the output. The AUTO-SLAVE switch connects the VCA in

the channel to the “slave” bus. In this position all channels in AUTO-SLAVE limit by the same

amount when any one channel exceeds its threshold level. The channels may be. set at different

thresholds to suit the requirements of each situation. If one channel is overdriven by, say, 10 dB,

its gain and the gain of all others in the slave mode reduces by the same 10 dB.

NEVER CONNECT A NYTHING EXCEPT AN APPROVED RANE AC POWER SUPPLY

TO THE THING THAT LOOKS LIKE A RED TELEPHONE JACK ON THE REAR OF

THE FPL 44. This is an AC power input and requires special attention if you do not have a

power supply EXACTLY like the one originally supplied with your unit. A Rane Model FRS 8 or

RAP 10 power supply is acceptable as well. Please see the full explanation of power supply

requirements elsewhere in this manual.

When connecting the FPL 44 to other components of a sound system for the first time, LEAVE

THE POWER SUPPLY FOR LAST. This allows for any mistakes to be identified by visual inspec-

tion and corrected before power is applied and it becomes too late.

INPUTS on the FPL 44 are balanced. The hardware provided for input connectors are 1/4" tip-

ring-sleeve jacks. The tip of the jack is the positive input, the ring is the negative input and the

sleeve is signal ground. Unbalanced inputs may either ground the ring or leave it open while driv-

ing the tip with the unbalanced signal. The FPL 44’s input circuitry is of the instrumentation vari-

ety, eliminating concern over open negative inputs, while ensuring equal differential and

common-mode impedances.

OUTPUTS. The outputs on this device are balanced as well. They differ from the inputs only by

way of their hardware implementation. The Flex philosophy dictates using 1/4" connectors for sig-

nal flow inside of a rack. Lines likely to exit a rack are of the 3-pin variety. If you read the “Quick

Start” section above, you already know that pin 2 of the output connectors is positive, pin 3 is nega-

tive and pin 1 is signal ground.

POWERING UP. In the opening paragraph it was stated that a good visual inspection often elimi-

nates disasters before applying power. It cannot be overstated how important it is to use the correct

power supply with this and all Flex modules. The Rane RS 1 single AC power supply (included

with each module) as well as the Rane FRS 8 and RAP 10 power supplies are the only power sup-

plies certain to work properly with this limiter. If another power supply is to he considered, it must

be an AC supply. It must have an 18 to 24 volt center-tapped output and be wired to a 6-pin mod

connector in accordance with the requirements of the Rane standard.

S Y S T E M C O N N E C T I O N

1. CHANNEL BYPASS SWITCH. This switch provides a passive bypass of each chan-

nel of the FPL 44. When pressed in, it directly connects the positive, negative and signal

ground inputs to the positive, negative and signal ground outputs of the channel. It is pro-

vided to allow easy A/B comparison of limiter activity. It also serves to pass the audio sig-

nal around the active circuitry of the limiter in the event of power failure.

2. BYPASS INDICATOR. This red LED illuminates to advise the operator of a bypass

condition, i.e., BYPASS switch pressed in.

3. LIMIT THRESHOLD CONTROL & INDICATOR. The calibrations (in dBu,

0 dBu = 0.776 Vrms) around this knob indicate the point at which the output limits. All lev-

els higher than this setting are reduced to this preset amplitude. The indicator illuminates

when the preset threshold is exceeded.

4. AUTO-SLAVE SWITCH. In the INDEPENDENT position (“down” in the vertical

orientation,

“right” when horizontally mounted) each limiter channel operates separately.

In the AUTO-SLAVE position (“up” in the vertical orientation, “left” in the horizontal),

each channel limits the same amount that any other channel in the slave mode does. If only

one channel of the possible four is set to this mode, it operates independently. If two or

more are set to AUTO-SLAVE, all slaved channels will attenuate the same amount when

any one exceeds its THRESHOLD.

5. POWER INDICATOR. This yellow LED illuminates when an appropriate power sup

ply is connected to the FPL 44 and is, itself, connected to an appropriate power source.

For the definition of “appropriate power supply,” please refer to the front page of this man-

ual. It doesn’t really make a lot of sense to beat this issue to death alter having done so

twice on the first page.

FRONT PANEL DESCRIPTION

Produkt Specifikationer

Mærke:	Rane
Kategori:	Blander
Model:	FPL 44

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