Casella-cel CEL-393 Manual de usuario Pagina 92

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Pre and post overload detectors with memory.
Calibration
Field calibration is achieved by means of the CEL-284/2
Precision Acoustic Calibrator.
Temperature Range
-10 to +50
o
C.
Dimensions
285 x 75 x 25mm.
Weight (less battery)
800g, 1.75lb, (A version).
Measurement Ranges
1
Note
1
These figures were measured for A and B versions. For C and D versions, the
90dB range is not available, while all other ranges will be similar.
Note
2
Lower reading is quoted at +10dB on noise floor. Upper reading allows crest
factor 10.
Reference Information Required by IEC 651 and 804
(section numbers relate to IEC 651 section 11.2)
1. A 35mV/Pa condenser microphone type CEL-186 is required
(or 80mV/Pa type CEL-190 for C and D models) and should
be screwed no more than finger-tight to the end of the pream-
plifier.
2. The reference direction of incidence is perpendicular to the
microphone diaphragm.
/88.
393 Handbook
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