Antialiasing filter
Built-in antialiasing filter (eighth-order elliptic type) ensuring correct sampling of the measured signal.
Pass band(-1 dB) 22.200 kHz or 44.4 kHz
Pass band(-3 dB) 23.520 kHz or 47.0 kHz
Stop band 26.256 kHz or 52.53 kHz
Attenuation in the stop band > 100 dB.
Reference conditions
• Reference frequency 79.58 Hz
• Reference temperature +23°C
• Reference relative humidity 50 %
• Reference range HIGH.
Pre-heating time 1 minute (for 0.1 dB accuracy).
Typical stabilization time after change in environmental conditions is 1 minute.
Note: When the instruments are moved from a warm environment with high humidity,
to a colder environment, care should be taken not to produce condensation inside
the instruments. In this case, much longer stabilization periods may be necessary.
Digital filters
High-pass filters
• HP (see Chapter C.5 for the filter characteristics)
• HP1 (see Chapter C.5 for the filter characteristics)
• HP3 (see Chapter C.5 for the filter characteristics)
• HP10 (see Chapter C.5 for the filter characteristics)
Frequency weighting filters (filter includes Band Limiting filter).
(Conforms to ISO 8041:2005, see Chapter C.5 for the frequency response characteristics)
• Wh from 0.8 Hz to 4000 Hz
Integrating filters (see Chapter C.5 for the frequency response characteristics):
• Vel1 from 0.2 Hz to 4100 Hz
• Vel3 from 0.2 Hz to 4100 Hz
• Vel10 from 0.2 Hz to 4100 Hz
• Dil1 from 0.1 Hz to 260 Hz
• Dil3 from 0.2 Hz to 510 Hz
• Dil10 from 1 Hz to 2050 Hz
Special filter
Filter for the evaluation of the machinery condition:
• VelMF from 0.2 Hz to 4100 Hz; conforms to the ISO 10816 standard (see Chapter C.5 for the frequency
response characteristics)
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