175
SV 200A User Manual
RMS detector
•
Digital
“True RMS“ with Peak detection
•
Resolution
0.1 dB
•
Range
327.7 dB
•
Crest Factor
unlimited (for signals in 20 kHz band)
Reference conditions
•
Reference frequency
1000 Hz
•
Reference level
114dB
•
Reference temperature
+20°C
•
Reference relative humidity
65 %
Calibration
(electrical)
Calibration level
0.5 V
RMS
(@ 114 dB indication)
Basic accuracy
<
0.2
dB (for the temperature T=+23°C
5°C for
sinusoidal signal 120 dB
RMS
in the band 10
Hz ÷ 20 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 120 dB
RMS
in the band 10
Hz ÷
20 kHz with the
Z
input filter).
Overload detector
The instrument has the built-in overload detectors. The overload in the measurement channel (in its
analogue part) and the overload of the analogue /
digital converter are both detected. The “overload”
indication is 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 re Reference
conditions).
Effect of magnetic field
< 15 dB (A) or < 25 dB (Z) (for 80 A/m and 50 Hz).
Effect of Vibration
< 0.1 dB (from 20 Hz to 1000 Hz at 1 m/s
2
).
Antialiasing filter
Built-in antialiasing filter. Second-order analogue filter, passive Class, combined with on-chip FIR digital
filter of the analog-to-digital converter, ensuring correct sampling of the measured signal.
Pass band (-1 dB)
22.200 kHz
Pass band (-3 dB)
23.520 kHz
Stop band
26.256 kHz
Attenuation in the stop band
> 80 dB.
