11 manufacturers servicing & warranty arrangements – Casella CEL CEL-393 User Manual
Page 95
21.
The warm-up time before valid readings can be made is
1.5 minutes.
22.
Not applicable.
23.
The instrument complies with Tables II and III of IEC 651 re-
garding its directionality, and Table V for overall tolerances on
frequency responses.
24.
As 23.
25.
For testing purposes the microphone should be replaced by a
dummy microphone type CEL-216.
26.
Primary indicator range - all measuring ranges as specified in
paragraph 3 above.
27.
Not applicable.
28)
10Hz is the lowest frequency for which the error resulting from
non-linear distortion is less than
±
1dB.
The battery life of the instrument with filters switched off is approximately
18 hours, depending on the duty cycle and the type of battery used. With
filters in use, this will drop to approximately 4 hours.
The right is reserved to amend any of the information given in this manual
in the light of new developments.
11
MANUFACTURERS SERVICING &
WARRANTY ARRANGEMENTS
In order to ensure its rigid conformity with the requirements of the
specification, the instrument has been carefully inspected and calibrated
prior to dispatch from the factory. All technical information for an individ-
ual instrument is filed under the instrument serial number. Therefore the
393 Handbook
/91.