Svantek SV 977D - Page 284

284
SV 977D User Manual - Appendixes
Table C.3.2. Peak for the sinusoidal signal 1 kHz, at reference conditions with the SV 12L preamplifier,
and ST 02 adapter
Peak for the sinusoidal signal 1 kHz, at reference
conditions @ 1 kHz (0.0 dB calibration factor)
Range
Max Peak value
Low
1.51 V “A” – weighting
1.53 V “B” – weighting
1.53 V “C” – weighting
1.53 V “Z” – weighting
1.53 V “HP” – weighting
1.53 V “AU” – weighting
1.53 V “U” – weighting
1.53 V “D” – weighting
High
10.8 V “A” – weighting
10.8 V “B” – weighting
10.8 V “C” – weighting
10.8 V “Z” – weighting
10.8 V “HP” – weighting
10.8 V “AU” – weighting
10.8 V “U” – weighting
10.8 V “D” – weighting
Note: For the signals with the crest factor n >1.41 upper measuring range of the RMS is reduced.
The valid upper limit can be calculated according to the below given formula:
An dB(re1µV) = A dB(re1µV) – 20log(n/√2),
where A is the upper limit for the sinusoidal signal in dB(re1µV)
Example: For the crest factor n = 10 the upper limit is A
10
= 120 dB(re1µV)
Measuring frequency range 2.6 Hz ÷ 22.4 kHz with the Z filter (-3 dB)
0.35 Hz ÷ 22.4 kHz with the HP filter (-3 dB)
0.35 Hz ÷ 44.6 kHz with the HPE filter (-3 dB)
Maximum peak voltage 30 V Peak-Peak (Maximum peak voltage of input sinusoidal
signal, which can be applied to the SLM without destruction the
meter)
RMS detector
• Digital “True RMS“ with Peak detection
• Resolution 0.1 dB
• Range 327.7 dB
• Crest Factor unlimited (for signals in the 20 kHz band)