Rane RA 27 Handleiding
Rane
Mengpaneel
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 qualied 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 ampliers) 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 specied by Rane.
12. Use only with the cart, stand, tripod, bracket, or table specied 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 qualied 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
ampliers) 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.
• Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modications not expressly approved by Rane Corporation could void the user's authority to operate the equipment.
is Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
Manual-2
FRONT PANEL DESCRIPTION
POWER switch: You’ve probably figured this one out by now...
Analyzer display LEDs: Each red LED lights up when response is too high in that band; green LEDs light when response
is within ±3 dB or ±1 dB of the selected curve; yellow LEDs come on when response is too low.
LEVEL control: Use this knob to adjust the microphone level (or line level when the microphone is unplugged) to properly
drive the display. This control is accurately calibrated in dB-SPL; any display band whose LED is green has the sound
pressure level indicated by this knob (only with the mic plugged in).
WINDOW switch: In the ±3 dB position, the green LED in each band lights when signals of that frequency are within 3 dB
above or below the Normal or House curve, whichever is selected. In the ±l dB mode, system response must be within l dB
above or below the selected curve to light the green LEDs.
PINK NOISE switch: Engage to activate the built-in pink noise generator. Be sure your system is turned down before
engaging this switch to prevent scaring yourself.
MICROPHONE INPUT jack: PLUG ONLY THE RANE MICROPHONE INTO THIS JACK – THE DC VOLTAGE
SUPPLIED BY THIS JACK COULD BE DAMAGING TO ANY OTHER MICROPHONE. When the mic is plugged in, the
display responds to whatever the mic picks up; when the mic is unplugged, the MIC INPUT jack automatically switches the
display to monitor the LINE INPUT jack signal on the rear.
Product specificaties
| Merk: | Rane |
| Categorie: | Mengpaneel |
| Model: | RA 27 |
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