Svantek SV 973, User Manual

Page: 182 / 212

SVAN 973 User Manual
– Appendixes
182
C
1.605 V
Z
1.605 V
Measuring frequency range 5
Hz ÷ 11.2 kHz with the
Z filter (-3 dB)
Centre Frequency Ranges for 1/1 Octave 31.5 Hz
÷ 8 kHz
Centre Frequency Ranges for 1/3 Octave 20 Hz
÷ 10 kHz
RMS detector
•
Digital
“True RMS“ with Peak detection
•
Resolution 0.1 dB
•
Range 327.7 dB
•
Crest Factor unlimited (for signals in 10 kHz band)
Reference conditions as per IEC 61260-1:2014
•
Reference frequency 1000 Hz
•
Reference level 114 dB
•
Reference temperature from +20
°C to +26°C
•
Reference relative humidity from 35% to 65%
Calibration (electrical)
Calibration level 0.11 V
RMS
(@ 114 dB indication)
Basic accuracy <

0.2
dB (for the temperature T=+23°C

5°C for
sinusoidal signal 114 dB
RMS
in the band 20
Hz ÷ 10 kHz
with the Z input filter)
Measurement error in the full temperature range
<

0.1 dB when the temperature is from -
10°C to +50°C
for the sinusoidal signal 114 dB
RMS
in the band 20
Hz ÷
10 kHz with the Z input filter.
Overload detector
The instrument has the built-in overload detectors. Both A/D converter and input amplifier overload conditions
are detected. The overload in the measurement channel (in its analogue part) and the overload of the
analogue / digital converter are both detected.
The “overload” indication appears when the input signal
amplitude is 0.5
dB above the declared “Peak measurement range”.
Warm-up time / Auto-start delay 1 min. (for 0.1 dB accuracy)
Effect of humidity < 0.5 dB (for 30%<RH<90% at 40

C)
Effect of magnetic field below electrical noise level (for 80 A/m and 50 Hz)
Antialiasing filter