Specifications

5-7
B-Chain Alignment
O
F
F
8
0
7
0
6
0
5
0
4
0
3
0
“85 dBC”
EQ MIC INPUT
SIGNAL PRESENT
SIGNAL PRESENT
SIGNATURE MIC
EQ MIC
NONSYNC2 RIGHT
NONSYNC2 LEFT
NONSYNC1 RIGHT
NONSYNC1 LEFT
CAT. NO. 681
RV1100
Dual SR/A Decoder ModuleDual SR/A Decoder Module
AASRSR
Cat.No.222SR/ACat.No.222SR/A
If the sound pressure level in the theater
is too low, a dialog box will appear on
the CP500 screen.
Adjust the level in the room to about
85
dBC
, using the EQ mic control as
mentioned above. Verify the level by
using your hand-held sound level meter.
Now open the front door of the CP500
and locate RV1100, the second trimpot
from the bottom on the Cat. No. 681.
Adjust the trimpot so that the 4-LED
Dolby level meter on the Cat. No. 222
(standard or -300 versions) or right-
hand Cat. No. 222 (70 mm versions)
indicates approximately equal greens.
NOTE
: Some CP500-300 versions may not have a
Cat. No. 222 installed. On these units, adjust the
trimpot so that the signal-present LED at the top of
the Cat. No. 681 flickers and is reasonably close to
full brightness. Its action should be similar to that of
the selected channel’s signal-present LED on the
Cat. No. 682.
If the CP500 has previously been
calibrated, it will display a dialog box
asking if calibration is to be performed or
if the old calibration data is to be used.
Press
OK
to recalibrate, or
CANCEL
to
use the old calibration data.
NOTE
:
While in the output level adjust menu,
pressing the
Calibrate SPL
key (SK1) will allow
recalibration of the system.
CAT. NO. 222