Casella CEL CEL-440 - Manual (Page 25)

3. SELECT MEASUREMENT MODE
& SETUP
3.1 Select Measurement Mode
(Bandwidth & CEL-480 Run Timing)
The measurement mode specifies the bandwidth that is to be used for
measurement. Note that broadband versions of the CEL-440 have no
measurement mode option, see step 2.
With a CEL-480, measurement mode also specifies how
measurements will be timed as follows.
Timers Off Manually timed. This allows the user to start and
stop a measurement run whenever they want.
Duration Run for a predetermined duration after pressing
the run key. This can be used to time a work
shift, or to measure some particularly noisy
operation with a known work cycle.
Sync timer Run for a predetermined duration that is
synchronized to start at the same time as the
next measurement period, which is set via the
Setup menu. This method is suggested when
precisely timed measurements are required.
Delay Timer Run with preset start and stop times. This allows
the instrument to start and stop up to seven
5
accurately timed measurement runs while
unattended. In this way, different measuring
times can be set for each day of the week with
the option of repeating them over a period of
several weeks.
Each time is set as Day:Hour:Minute, so that
delays can be set up to a month ahead. Set the
Day to 00, to use this as a 24 hour timer.
Once set, timer settings become valid for all measurement modes (i.e.
for all bandwidths and all setups).
Display screens that are available only for a CEL-480 are shown
with a dashed - - - - line.
Select measurement mode as follows.
Note 5: Before V 2.0 firmware, six timed measurements only with no repeat option.
CEL-440/480 Operators Handbook - Page 25
Select Mode & Setup