Manual-11
RECOMMENDED CALIBRATION PROCEDURE
The CP 64 is a very versatile instrument. While this allows it to conform to the requirements of a large number of system
applications, it also results in complexity. For this reason, it is very important to use an organized approach to system calibra-
tion. Once the internal switches are set and the system is connected, take the time for proper calibration. The following is an
ordered list of system adjustments that should make calibration easy and result in optimum performance. Most important:
• Program Priority Assign is set to Off
• Ducker is Off
• Zone Limit Threshold is set to +20 dBu
• Page Zone Levels are set to minimum
• Remote Control is not selected
• Page Zone Assign is set to Both
The following procedure assumes that microphones are used for Page sources. The procedure (except for the exact
wording) is the same for other Page sources.
Make sure the POWER is off!
Control Presets:
Page settings (repeat for second page input):
• Input Pad
Mic/Line as required
• Input gain trim
Center (12:00)
• Detector Threshold
Min (ccw, Active)
• Paging assign
Both
• Paging Level, Zone 1
Min
• Paging Level, Zone 2
Min
• Phantom Power
As required. Default Off
(internal)
• Pre/Post summing
As required. Default Pre-VCA
(internal)
• Page Priority
As required. Default Page 1
(internal)
Program Input settings:
• Input Level controls
Min
• Program Priority Input Threshold
Set to
−
50 at factory (internal adjust
−∞
to
−
35 dBu)
• Program Priority Input Release Time
Set to 12 sec. at factory (internal adjust 2 to 20 sec.)
• Program Priority Assign
Off
Zone Settings (repeat for second zone):
• Zone Level
Max
• Program Select
L1 (if your input is on L1).
• Ducker
OFF
• Ducker Depth
Center (about 15 dB)
• RMT (Remote)
Out (front panel)
• EQ
Flat (center detent position)
• Stereo/Mono switch
As required (internal - zone 1 only, default:stereo)
• Expand Source
As required (Zone/Program/Page)
• Limiter Threshold
+
20 dBu
System Connections:
• Connect Page Microphones or Line Level paging source
• Connect Program Sources
• Connect Outputs to Amps
• Connect Remote Controls
You are now ready to calibrate the CP 64…
