Rane RA 30 User Manual
DATA SHEET
USE RANE
MIC ONLY!
ANALYZER
REALTIME
RA 30
GAIN CAL MICSOURCE
0 dB
METER
RTA
SCALE
NORMAL
1
3
6
120
100
80
WEIGHT
CA RTA
METER
NOISE
PINK
VU
SPL
SIG
OL
+12-12
CAL
-5
-27-30 -24
-25
-21 -15-18
-20
-12 -9
-15
-6 -3
-10
+3 +12+6 +9
0
dB
dB
6.3k5025 31.5 40 16063 80 125100 315200 250 400 500 1k800630 1.25k 1.6k 3.15k2.5k2k 4k 5k 20k8k 10k 16k12.5k
CAL
MIC
AUX
MIC
OFF
LINE
IN
5.75"
0.95"
0.75"
General Description
e Rane R A 30 Realtime Analyzer is a single rack space
unit providing 30 bands of realtime frequency/amplitude
information in a 5-LED per band format. e R A 30 serves
three functions:
• Realtime Analyzer with Pink Noise generator
• SPL Meter
• Stereo VU Meter with Peak Hold
In RTA (Real Time Analyzer) mode, the R A 30 is used
to visually judge the character of the Pink Noise signal (or
any sound) received by the measurement microphone. A Pink
Noise generator is built into the R A 30 with an on/off switch.
e operator may now adjust an external ⅓-octave equalizer
for optimum response of a sound system based on the readings
presented by the LED display.
Broadband signals applied to either the Mic or Line Inputs of
the RA 30 are divided into ⅓-octave increments by IEC 61260
Class 2 filters. e outputs of the filters are displayed on the
front panel to visually indicate the amplitude of each band, in
user-selectable 1, 3 or 6 dB per LED scales. A Normalize button
sets the 0 dB reference to the maximum band level.
In SPL (Sound Pressure Level) meter mode, the display
is read horizontally and calibrated to a 1 dB resolution. e
calibrated mic included with the RA 30 must be used, with the
Gain control in the detented ‘CAL’ position. A- or C-weighting
filters are user selectable. is mode accurately displays SPL readings from a minimum of 51 dBA to a maximum of 120 dBA.
e Cal Mic Input auto ranges for maximized operation.
Stereo VU meter mode is automatically enabled when the
Line input source is selected. It has a 1.5 dB resolution, and can
RA 30
REALTIME ANALYZER
be calibrated to accommodate +4 dBu or -10 dBV signals. Two
horizontal rows of yellow LEDs indicate the VU level. e top
row corresponds to the Left Input, and the bottom row corresponds to the Right Input. Levels above +3 dB on the VU scale
switch to the red LED rows.
e VU meter incorporates an instantaneous Peak Hold
function with a 2-second hold time. Peak Hold is enabled or
disabled by pressing the NORM button. e peak value is displayed with a single LED for each channel. If the held peak value
is greater than +12 dB on the VU scale, the +12 dB LEDs stay
illuminated. In this case, the Input gain can be decreased until
the peak value is not “stuck” at +12 dB. For a calibrated peak
measurement, the input gain can be set to minimum, which sets
the 0 dB mark on the VU scale to +16 dBu.
e Rane MIC 2 condenser microphone is a professional
quality back-electret condenser microphone with an
omnidirectional pickup pattern. is microphone is supplied
with each RA 30, and connects to the front panel Mic Input jack
only. e tapered aluminum mic housing fits most mic stand
clips (one is included), and comes complete with a 25 foot (7.6
meter) cable to facilitate distant placement of the mic from the
analyzer. ese factory tested mics are flat to within 1 dB from
20 Hz to 16 kHz. An Aux Mic Input is provided on the rear
panel, facilitating the use of other microphones.
e rear panel of the RA 30 includes a Pink Noise Output
jack, Aux Mic Input (XLR), stereo Line Inputs (¼" balanced,
can operate in mono by using the left input only), and a recessed
Pink Noise Level adjustment.
Features
• RTA, SPL Meter, and Stereo VU Meter in one rack space
• 30 IEC Class 2 Filter Bands from 25 Hz to 20 kHz
• 5-color LED display per band
• Digital Pink Noise generator
• Flat-response Microphone and clip with 25-foot cable
Rane MIC 2 (included)
• ±6 / 3 / 1 dB Selectable RTA Scale with Normalize function
• Aux Microphone Input, Stereo or Mono Line Inputs
• A- & C-weighting switch in SPL mode
• Peak Hold function in stereo VU mode
• Analyzer Sensitivity and Pink Noise Level controls
Data Sheet-1
RA 30
REALTIME ANALYZER
Parameter Specication Limit Units Conditions/Comments
Cal Mic Input: Type Active Unbalanced 3-pin XLR-Female type, pin 2(+)
.........Impedance 2k 1% Ω 1 kHz
.........T Power Voltage 2 5% VDC Pin 2 of connector, 1 mA max
.........T Power Source Resist. 2.21k 1% Ω DC resistance
Line Inputs: Type Active Balanced/Unbalanced Right Input tied to Left Input when unplugged (Mono)
.........Connector ¼" TRS Tip=(+); Ring =(–); sleeve ch. gnd.
.........Impedance (Stereo/Mono) 10k / 5k 2% Ω each leg, 1kHz
.........Maximum Input 21 dBu Input Gain centered, 1 kHz sine
Aux Mic Input: Type Active Balanced/Unbalanced 3-pin XLR-Female type, pin 2(+)
.........Impedance 1k 1% Ω each leg, 1 kHz
..........Maximum Input -16, 1 kHz sine dBu Trim = min; Input Gain = center
.........Overload -20 ±1 dBu
Input Gain Control: Range -12 to +12 1 dB
.........Center Gain 0 ±0.5 dB
.........Signal present -50 max dBFS
...............Line Input: VU mode -31 max dBu both channels 1 kHz sine
...............Line Input: RTA mode -37 max dBu both channels 1 kHz sine
...............Aux Mic Input -68 max dBu Trim = min; 1 kHz sine
.........Overload -4 min dBFS
...............Line Input: VU mode 17 min dBu both channels 1 kHz sine
...............Line Input: RTA mode 11 min dBu both channels 1 kHz sine
...............Aux Mic Input -20 min dBu Trim = min; 1 kHz sine
Pink Noise Output: Type Active Unbalanced ¼" TRS
.........Impedance 302 1% Ω
.........Level Off to +4 dBu
Pink Noise: Type Pseudorandom (average) ½ dB error
.........Pink Noise Period 167 typ. sec.
..........Crest Factor 4.9 typ.
Real Time Analyzer: Type 30 bands, rms averaging 25 Hz to 20 kHz, ⅓-octave centers
.........Scale ±1, ±3, ±6 dB per row dB User selectable
.........Range (max/min) 40 (100 @ Gain -12
60 @ Gain +12)
.........Filters 4th-order, ⅓-octave IEC 61260 Class 2
.........Averaging Time Constant Variable
VU meter: Type rms averaging
.........0 dB point 4 dBu Input Gain set to center
-10 dBV Input Gain set to maximum
16 dBu Input Gain set to minimum
.........Range -31.5 to +12 dB re: 0 dB point
.........Resolution 1.5 per column dB Accurate within 1.5 dB
.........Attack 300 msec. To reach 0 dB indication
.........Decay 700 msec. To reach -20 dB indication
.........Peak Hold Attack Instantaneous
.........Peak Hold Decay 2 typ. sec.
SPL meter: Type RMS averaging
.........Range 51 to 120 dB SPL Auto Ranging: 80, 100, 120 dB SPL
.........Resolution 1 dB
Data Sheet-2
dB SPL Pink noise source, Cal Mic Input
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