Casella CEL CEL-414 - Manual (Page 52)

impedance of input
device <100 kΩ.
AC (not CEL-266/3 or CEL-328/3(:
21 V pk-pk via auxiliary
socket,
Recommended
impedance of input
device <100 kΩ.
Control outputs and inputs:
Remote pause,
Remote reset,
Remote function step (up only),
External power.
Refer to Section 3.5 for further details
Digital outputs and inputs:
These are available via the CEL low
power serial interface on the “B”
and “D” version and CEL-493/3
only. Refer to Chapter 8 for precise
details.
RTS Request to send,
TXD Serial data,
CTS Clear to send.
External power,
3.5 to 8 V DC via pins 1 and 2 of
auxiliary socket, at 250 mA
maximum.
Batteries:
4 x IEC LR6 Manganese Alkaline
type.
Battery life up to 15 h with
continuous use.
Dimensions:
284 x 79 x 31 mm, (11.2 x 3.1 x 1.2 in).
Weight:
0.82 kg (1.8 lb) without batteries,
0.9 kg (2.0 lb) including batteries.
When one of these sound level meters is
switched ON, it performs a self test op-
eration lasting for about 10 seconds, dur-
ing which time the display first shows
“CEL” together with the software issue
number, then the instrument type and
version letter (A, b, C, d or E).
Should it fail any of the tests, one of the
following error messages will be dis-
played.
Message
E01
E02
E03
E04
E05
Should the instrument fail any of the con-
tinuous check procedures, one of the fol-
lowing error messages may appear
during operation.
Message
E06
E07
E08
E09
E10
E11
E12
E13
E14
E15
E16
E17
12. ERROR MESSAGES
Page 48 - General CEL Sound Level Meters Handbook