Casella CEL CEL-368 - Manual (Page 89)

Lower than a reading of 30 dB(A) when tested according to
IEC 651 clause 8.4.
Directional response:
Within the limits of IEC 651.
Effect of windshield:
Negligible on frequency response below 10 kHz, reduces wind
induced noise typically 14 dB for wind speeds up to
100 km/hour.
Effect of operator:
Negligible when microphone is pointing away from operator
standing 2 m behind instrument.
Frequency weightings:
A-weighting to IEC 651 Type 1 or Type 2 as appropriate,
C-weighting to IEC 651 Type 1or Type 2 as appropriate,
Linear (flat).
Time weightings:
Fast: 125 milliseconds,
Slow: 1 second.
Digital display:
40 x 59 mm LCD, with 64 x 128 pixels,
Arranged to give 9 characters x 12 lines.
Functions indicated:
SPL Sound Pressure Level,
L eq Equivalent Continuous Level,
CEL-268/368 Handbook Page - 88