Rane RA 27 Manual

Rane Blander RA 27

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Manual-1

OPERATORS MANUAL RA 27

REALTIME ANALYZER

QUICK START

If you are familiar with real time analyzers, feel free to jump right in. To avoid some of the lurking sharks read these

few tips as a reminder of what it is you already know:

FLAT IS NOT BEAUTIFUL. Equalizers have two basic purposes: correction and enhancement. The Rane analyzer

allows you to accurately correct system response to each location. A task very difficult to do by ear. Once this is quickly

done, then you adjust for further sound quality enhancement by ear; only rarely will a system be left in a “flat” condition.

USE MORE THAN ONE TEST MICROPHONE LOCATION. Speaker dispersion characteristics vary greatly, from

beamy highs to boomy bass traps. While performing the pink noise test, try at least two different test mic locations and

average the two if they differ.

USE ENOUGH PINK NOISE VOLUME TO OVERRIDE BACKGROUND NOISE. There’s no need to run

deafening pink noise levels to EQ a system. Just be sure that no green/red LED responds when pink noise is turned off (if

they do, background noise is causing erroneous readings and pink noise should be turned up higher).

USE ±3 dB DISPLAY SETTING FOR LOW FREQUENCY ADJUSTMENTS. The crest factor (peak response) of

true pink noise causes considerable LED flutter in the ±l dB mode, making it difficult to adjust quickly. We recommend

that the ±3 dB setting be used on frequencies below 500 Hz or so; use the ±l dB on the more sensitive mids and highs.

MONITORING PROGRAM WITH ANALYZER DISPLAY. When the front panel microphone is unplugged, the

analyzer display automatically monitors the RA 27 LINE INPUT signal. Use this feature to identify specific feedback

points by watching for red LEDs during the performance. You can then apply EQ exactly where it’s needed very quickly. If

all else fails, read the rest of the manual.

WEAR PARTS: This product contains no wear parts.

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

To reduce the risk of electrical shock, do not open the unit. No user

serviceable parts inside. Refer servicing to qualied service personnel.

e symbols shown below are internationally accepted symbols that warn

of potential hazards with electrical products.

is symbol indicates that a dangerous voltage

constituting a risk of electric shock is present within

this unit.

is symbol indicates that there are important

operating and maintenance instructions in the

literature accompanying this unit.

WARNING

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in accordance with manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, registers, stoves, or other apparatus (including ampliers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A ground-

ing-type plug has two blades and a third grounding prong. e wide blade or third prong is provided for your safety. If the provided plug does not

t into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord and plug from being walked on or pinched particularly at plugs, convenience receptacles, and the point where it exits from

the apparatus.

11. Only use attachments and accessories specied by Rane.

12. Use only with the cart, stand, tripod, bracket, or table specied by the manufacturer, or sold with the apparatus. When a cart is used, use caution

when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply

cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does

not operate normally, or has been dropped.

15. e plug on the power cord is the AC mains disconnect device and must remain readily operable. To completely disconnect this apparatus from

the AC mains, disconnect the power supply cord plug from the AC receptacle.

16. is apparatus shall be connected to a mains socket outlet with a protective earthing connection.

17. When permanently connected, an all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electri-

cal installation of the building.

18. If rackmounting, provide adequate ventilation. Equipment may be located above or below this apparatus, but some equipment (like large power

ampliers) may cause an unacceptable amount of hum or may generate too much heat and degrade the performance of this apparatus.

19. is apparatus may be installed in an industry standard equipment rack. Use screws through all mounting holes to provide the best support.

WARNING: To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture. Apparatus shall not be exposed to dripping

or splashing and no objects lled with liquids, such as vases, shall be placed on the apparatus.

NOTE: is equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. ese

limits are designed to provide reasonable protection against harmful interference in a residential installation. is equipment generates, uses and can

radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communica-

tions. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to

radio or television reception, which can be determined by turning the equipment o and on, the user is encouraged to try to correct the interference

by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.