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Cascade Model Twelve
P
ower is switched on or off by pressing the button directly below
the bar-graph window.When the unit is on, one or more LEDs will
always be illuminated.The function of the LEDs is described in
the following section.
• Power-On/Low Signal: This is indicated by the illumination of
any LED on the bar graph. If the sound level in the room is below
the measurement range of the instrument, a green LED near the
bottom of the bar graph will be illuminated.
• Normal Measurements:When the sound level is within the
range of the RSLM, the green LED will be off and one of the red
LEDs in the bar graph will be illuminated, indicating the relative
sound level, in decibels (dB).
• Over-Range:If the sound level exceeds the range of the meter,
0dB through –5 will all light simultaneously.
• Low Battery:When the battery voltage is too low for accurate
measurements, an LED at the bottom of the bar graph will be
illuminated. Replace the battery.
Do not attempt measurements when this light is on.
RSLM Placement
Determine where in the room you are most likely to sit when
listening to music or watching a movie.This is where you will
want to hold the RSLM during measurements.The RSLM should
be oriented so it can be easily read and held at your seated
ear level during tests.
Y
ou must use this same position for all tests.
The RSLM can be mounted on a standard camera tripod.
This will ensure the best results.
Tracks 53–62 of the R.A.B.O.S.Test CD are test tones that can be
used for general diagnostics of your system.They are not used
for R.A.B.O.S. settings.
THE R.A.B.O.S.SOUND-LEVEL METER (RSLM)
The RSLM is a battery-operated, handheld, acoustic measurement
device specifically designed for Infinity R.A.B.O.S. On the face of
the instr
ument is a light-emitting diode (LED) bar gr
aph that
indicates relative sound level.There are also indicators for
power-on, out-of-range signals and a low battery.
Track Title
1
Welcome
2 Set System Test Level
3
Set Subwoofer Test Level
4 100Hz Test
5
95Hz Test
6 90Hz Test
7
85Hz Test
8 80Hz Test
9
77Hz Test
10 72Hz Test
11 66Hz Test
12 63Hz Test
13 56Hz Test
1
4 52Hz Test
15 49Hz Test
1
6 46Hz Test
17 43Hz Test
1
8 40Hz Test
19 38Hz Test
2
0 35Hz Test
21 30Hz Test
22 26Hz Test
23 24Hz Test
24 22Hz Test
25 21Hz Test
26 2
0Hz Te
st
2
7 Intro to Quick Retest
28 Quick Retest 100Hz
2
9 Quick Retest 95Hz
30 Quick Retest 90Hz
31 Quick Retest 85Hz
Track Title
3
2 Quick Retest 80Hz
33 Quick Retest 77Hz
3
4 Quick Retest 72Hz
35 Quick Retest 66Hz
3
6 Quick Retest 63Hz
37 Quick Retest 56Hz
3
8 Quick Retest 52Hz
39 Quick Retest 49Hz
4
0 Quick Retest 46Hz
41 Quick Retest 43Hz
42 Quick Retest 40Hz
43 Quick Retest 38Hz
44 Quick Retest 35Hz
4
5 Quick Retest 30Hz
46 Quick Retest 26Hz
4
7 Quick Retest 24Hz
48 Quick Retest 22Hz
4
9 Quick Retest 21Hz
50 Quick Retest 20Hz
5
1 Final System Level Adjustment
52 Final Subwoofer Level Adjustment
53 Wide Band Pink Noise,Left
54 Wide Band Pink Noise,L+R
55 Wide Band Pink Noise,Right
56 Wide Band Pink Noise,L-R
57 Wide Band Pink Noise,Uncorrelated
5
8 1 to 4kHz Pink Noise,Left
59 1 to 4kHz Pink Noise,
L+R
6
0 1 to 4kHz Pink Noise,Right
61 1 to 4kHz Pink Noise,Left-R
62 1 to 4kHz Pink Noise,Uncorrelated
F
igur
e 2.
R.A.B.O.S.Sound-Level Meter
Power
-1
-2
-3
-
4
-5
-
6
-
7
-
8
-9
-10
-11
-13
-15
-18
U-R
Batt
Contents of the R.A.B.O.S. Test CD
On
Under-range
Measurement
In-range
Over-range
Low
Battery
Figure 3. RSLM bar-graph indications
Cascade 12 OM 9/21/05 5:03 PM Page 9