Casella CEL CEL-440 - Manual (Page 59)

Narrow Band Data Storage:
Manual storage of 999 octave or 1/3 oct sets of results with
choice of:
Auto scanning of frequency bands with measurement and step
on each time the current band has stabilised,
Timed scanning with a predetermined time for each band that
can be set between 5 and 60 s,
Manual scanning of bands with saving of band data at each step.
Only 1 spectrum can be captured per run as the CEL-440 has
no auto repeat mode.
The memory can save a mixture of full octave and 1/3 octave
measurements. (L, L
mx , L eq result during measurement).
The number of bands scanned can be set between all available
and a single band.
Data Recall:
Stored results can be recalled to the display (even while a
measurement is in progress).
Data sets can be downloaded to a Centronics printer to give a
preformatted hard copy.
Data can be downloaded according to RS 232 standards to a PC
for further manipulation under the control of dB 21 or dB 22.
Outputs and Inputs:
AC output signal for tape recording or headphone.
0.5 V RMS Maximum with minimum load impedance 22 k
Ω.
AC input signal for analysis inserted via a line input terminal in
the bottom panel.
0.5 V RMS Maximum with maximum source impedance 22 k Ω,
or AC input signal inserted via a CEL-516 Input Adaptor, 10 V
RMS Maximum with maximum source impedance 100 k
Ω.
Effect of Temperature:
Accuracy better than ±0.5 dB over the range -10 to +50
o
C
when corrected as indicated here.
CEL-440/480 Operators Handbook - Page 59
Specification