Rane FDA 18 Manual

Rane Blander FDA 18

Læs gratis den danske manual til Rane FDA 18 (4 sider) i kategorien Blander. Denne vejledning er vurderet som hjælpsom af 3 personer og har en gennemsnitlig bedømmelse på 4.8 stjerner ud af 2 anmeldelser. Har du et spørgsmål om Rane FDA 18, eller vil du spørge andre brugere om produktet?

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Side 1/4

OPERATING / SERVICE MANUAL

FDA 18

QUICK START

You’re in a hurry, so you better read this quick, so you can get started right away.

The input may be mic or line level. Choose by pressing the pushbutton located near the

MASTER control. A balanced input uses “+” as hot, “–” as return and GND as shield ground. An

unbalanced input should connect to “+” and GND. Leave “–” unconnected.

The outputs are “+” and “–”. Normally GND is not used on the sending end. Ground the

shield only at the receiving end.

Signal for the outputs is sourced either before or after the MASTER level control. The switches

which determine this are located within the confines of the unit’s covers. All FDA 18s are

shipped from the factory with the switches in the POST position.

Once the input and outputs are satisfactorily connected, set the input gain as high as possible

without causing the overload (OL) indicator to illuminate steadily with very high input levels.

NEVER CONNECT ANYTHING EXCEPT AN APPROVED RANE POWER SUPPLY TO

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

18. This is an AC input and requires special attention if you do not have a power supply EX-

ACTLY like the one that was originally packed with your unit. See the full explanation of the

power supply requirements elsewhere in this manual.

SYSTEM CONNECTION

When connecting the FDA 18 to other components in your system for the first time, LEAVE

THE POWER SUPPLY FOR LAST. This gives you a chance to make mistakes and correct them

without damage to your fragile speakers, ears and nerves.

INPUTS. The input on the FDA 18 is fully differentially balanced, i.e., it is a true instrumenta-

tion amplifier. It may also be used in an unbalanced configuration. Use only shielded cable for

your input. This wire should always be two-conductor plus shield, even for unbalanced operation.

Balanced inputs should be connected to the “+” pin and “–” pin for signal hot and return. The

shield should be tied to GND. A neutral “pin 1” ground is not necessary (except when using phan-

tom power). For unbalanced use, connect the hot side of the input cable to “+” and the signal re-

turn to GND. It is never necessary on any Rane Flex module to ground the pin 3 input in the

unbalanced mode; however, it won’t hurt anything either. If the input is coming from another

piece of equipment (as opposed to a mic), connect the shield only at the receiving end to help pre-

vent ground induced hum. If a microphone is the source, connect the shield to the case of the mic

as well as pin 1, and to the ground terminal on the unit. This is mandatory when using phantom

power.

OUTPUTS. The FDA 18’s outputs are fully balanced using a cross-coupled type of output line

driver stage. Use two conductor shielded cable for interconnecting to the next piece of equip-

ment. Normally, grounding the shield only at the receiving unit gives the best shielding, and the

most hum-free performance.

The cross-coupled output stage is capable of driving lines as long as 1000 without problems.

Longer lines (in excess of a mile) can be driven by directly paralleling two outputs.

FRONT PANEL DESCRIPTION

7. POWER INDICATOR. When this little yellow LED illuminates, the foregoing informa-

tion applies. If darkness persists at this location — ignore the above. Pity.

6. OUTPUT LEVEL CONTROLS. These concentric controls set each individual output

level. The inner knobs are for odd numbered channels, and the outer knobs are for even

numbered channels.

5. MIC/LINE SWITCH. In the out position, the input is scaled for microphone input lev-

els. In the depressed position, the input stage is set for line-level input.

4. MASTER LEVEL CONTROL. This control sets the signal level appearing on the inter-

nal distribution bus. Output levels may be selected via the four pairs of concentric controls

connected to the output sections. This is true, however, only if the internal PRE/POST

switches are in the POST position (as shipped).

In the PRE position, the MASTER level control is bypassed for that respective output

and only the input GAIN control and the individual OUTPUT level control has any affect.

3. PHANTOM POWER SWITCH AND INDICATOR. In the ON position (LED on),

15 VDC phantom power appears on each input terminal on the rear of the module.

2. OVERLOAD INDICATOR. This red LED illuminates whenever the combination of

input level and input gain adjustment causes the input amplifier to reach or exceed a level

equal to 4 dB below clipping.

1. INPUT GAIN CONTROL. This control sets the gain of the input. The adjustment

MIN to MAX range is from 26 dB to 70 dB when MIC is selected, and from -7 dB to 37 dB

for LINE sources. Set the highest level that does not cause the OL indicator to come on

continuously.

Produkt Specifikationer

Mærke:	Rane
Kategori:	Blander
Model:	FDA 18

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