SV 971A User Manual – Appendixes
C.2 SPECIFICATION OF SV 971A AS 1/1 OCTAVE AND 1/3 OCTAVE ANALYSER
C.2.1 Specification of SVAN 971A as 1/1- and 1/3-octave analyser in the standard
configuration
Statement of performance
SV 971A can operate as 1/1-octave or 1/3-octave analyser with all listed below accessories meeting
requirements of the international IEC 61260-1:2014 standard for the pass band filters for the Class 1 Group X
instruments.
Note: Simultaneously to the frequency analysis SV 971A operates as a Sound Level Meter - see
Chapters C.1 for specification.
Configuration of the complete analyser
SV 971A sound analyser
SV 18A microphone preamplifier
ST 03 adapter (input impedance)
Normal operating mode
SV 971A in configuration with the SV 18A microphone preamplifier and ST 03 adapter with following settings:
measurement range – Normal or Low (path: <Menu> / Measurement / Range – see Chapter 4.6),
Microphone compensation – Off, Field Compensation – Free Field, Windscreen compensation – Off
(path: <Menu> / Measurement / Compensation Filter – see Chapter 4.7).
Note: For the conformance electrical tests with the ST03 impedance, the Microphone
compensation must be set to Off (path: <Menu> / Measurement / Compensation Filter) – see
Chapter 4.7.
Note: When the 1/1- or 1/3-octave analyser is used with the microphone installed (for acoustic
signals), the Microphone compensation must be set to On (path: <Menu> / Measurement /
Compensation Filter) – see Chapter 4.7.
Signal input
● SV 18A preamplifier throughout the ST 03 adapter
● Maximum input voltage: SV 971A meets the requirements of IEC 348 for the class 2 devices. The input
voltage shall not exceed the limits between -10 V and +10 V.
● Impedance: 10 G / 2 pF.
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