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Key features
of the CEL-440
- Display
Multi segment display showing
instrument setup and results
Icons for under range, over range, measurement
mode bandwidth, battery status, active navigation
keys, date, time, frequency weighting, analog bar
graph of instantaneous level, measurement units,
recording status, run number, display mode, start
and stop frequency bands for filter scan
- Keypad
11 key tactile water and dustproof
keypad
On/Off button
Menu button to access main
operating functions of instrument
Enter button to confirm
selections
Up arrow navigation button
Down arrow navigation button
Backlight button to illuminate
display
Left arrow navigation button
Right arrow navigation button
Start/Pause button to begin a
run
Data button to recall results
Stop button to halt a run
- Interface sockets
4 sockets on the base of the
meter provide -
12V dc external power,
ac line out,
ac line in,
RS232 serial communications
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