Svantek SV 977D User Manual

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SV 977D User Manual - Appendixes
Underrange detector
The instrument has the built-in under-range detector. The “underrange” indication appears when the RMS
value is below the lower linear operating range.
Analogue/Digital conversion 24 bits resolution.
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 as per ISO 8041-1:2017
• 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 (see Chapter C.5 for frequency response characteristics)
• HP
• HP1
• HP3
• HP10
Frequency weighting filter (filter includes Band Limiting filter).
Conforms with ISO 8041-1:2017 (see Chapter C.5 for frequency response characteristics)
• Wh from 0.8 Hz to 4000 Hz
Integrating filters (see Chapter C.5 for 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

Svantek SV 977D Specifications

General

Brand	Svantek
Model	SV 977D
Category	Measuring Instruments
Language	English