Rane RA 27 Operator'S Manual Download Page 4

Manual-3

REAR PANEL DESCRIPTION

 LINE INPUT jack:

 This is an unbalanced ¼" Input to the analyzer. The range of acceptable signal levels is 15 mV-3.0 V

 AUX MIC INPUT jack: 

A female XLR type connector for inserting signals from a low impedance microphone into the RA

27. Use this jack when you wish to use a microphone other than the one supplied.

 PINK NOISE LEVEL adjust: 

Use a 1/8" screwdriver to adjust the output from the Pink Noise generator from 0 to 1.2

volts (+4 dBu) to match the input level requirements of the mixer or other equipment.

 PINK NOISE OUTPUT jack:

 This is an unbalanced ¼" jack which supplies Pink Noise to the sound system.

RA 27 CONNECTION

SYSTEM HOOK-UP

Connect the RA 27 into your system as shown below.

Plug the Rane condenser microphone into the front panel
MIC INPUT. 

CAUTION: Do not plug any other microphone

into the front panel jack: This jack contains DC voltage which
may be damaging to other microphones.

 For special applica-

tions you can use another microphone by patching into a
send/receive loop on a mixer as described in Rane Note 104
(available on from our website or by mail request).

Summary of Contents for RA 27

Page 1: ...E 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...

Page 2: ...he 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 This 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 b...

Page 3: ...DOW 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 ...

Page 4: ...volts 4 dBu to match the input level requirements of the mixer or other equipment PINK NOISE OUTPUT jack This is an unbalanced jack which supplies Pink Noise to the sound system RA 27 CONNECTION SYSTEM HOOK UP Connect the RA 27 into your system as shown below Plug the Rane condenser microphone into the front panel MIC INPUT CAUTION Do not plug any other microphone into the front panel jack This ja...

Page 5: ... are differ ences Analyze one channel at a time ANALYZER SETTINGS Select either the 3 dB or the 1 dB WINDOW on the analyzer We recommend starting with the 3 dB setting then switching to the 1 dB mode for fine tuning frequencies above 400 or 500 Hz The crest factor peak response of true pink noise causes considerable LED flutter in the 1 dB mode below about 500 Hz thus it is expedient to use the 3 ...

Page 6: ... level of the performer and about six inches off to one side of the stage micro phone in line of sight to the monitor speaker If the stage microphone is directly between the Rane mic and monitor speaker blocking line of sight some high frequencies will be blocked giving a false reading on the analyzer display 3 If you are running more than one monitor from a single equalizer test each monitor loca...

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