Svantek Shawcity SVAN 977C, User Manual

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SVAN 977C User Manual - Appendixes
Table C.3.2 Peak for the sinusoidal signal 1 kHz, at reference conditions (with SV12L preamplifier, ST02
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
High
10.8 V
“A”-weighting
10.8 V
“B”–weighting
10.8 V
“C”-weighting
10.8 V
“Z”-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 sinusoid
al signal in dB(re1µV)
Example: For the crest factor n = 10 the upper limit is A
10
= 120
dB(re1µV)
Measurement frequency range 3
Hz ÷ 22.4 kHz with the
Z filter (-3 dB)
Measurement frequency range 1
Hz ÷ 44.6 kHz with the
HPE filter (-3 dB)
Note: When another vibration transducer is used, the frequency range given above for the HP filter
can be different.
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 20 kHz band)
Reference conditions
•
Reference frequency 1000 Hz
•
Reference temperature +23
°C
•
Reference relative humidity 50%
Calibration (electrical)
Calibration level 0.5 V
RMS