Svantek Shawcity SVAN 977C, User Manual

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SVAN 977C User Manual - Appendixes
Preamplifier
SV 12L nominal preamplifier attenuation: 0.7 dB;
IEPE Type
– power supply 1.5 mA@30 V
SV12L typical frequency response
Maximum peak voltage 30 V Peak-Peak (Maximum peak voltage of input sinusoidal
signal, which can be lead to the SLM without destruction the
meter)
Warm-up time 1 min. (for 0.1 dB accuracy)
Nominal delay less than 3 seconds (between operating of the "Reset- Button"
and beginning of a new measurement)
Typical stabilization time after change in
environmental conditions by 20

C
1 hour
Time shift after completion of a
measurement, before a measurement is
shown
< 1 sec
Note: When SVAN 977C is moved from a warm environment with high humidity to a colder
environment, care should be taken not to produce condensation inside the instrument. In this case,
much longer stabilization periods may be necessary.
Environmental, electrostatic and radio frequency criteria
Effect of humidity < 0.5 dB (for 30%<RH<90% at 40

C and 1000 Hz)
Effect of magnetic field < 15 dB (A) or < 25 dB (Z) (for 80 A/m and 50 Hz)
Effect of radio frequency fields < +/-0.5 dB @ 74 dB and 10V/m electromagnetic field
The greatest susceptibility (the least immunity) is achieved when the SLM is placed parallel to the radio
frequency field and the
Z filter and time weighting Fast are selected and the SPL measurements are
considered.
The instrument produces greatest radio-frequency emission when an extension cable is connected. The cable
placed as a solenoid may produce unexpected emission depending on its physical dimensions. Any
configuration w/o extension cable reduces emission below 30 dBuV/m.
Effect of electrostatic discharge meets requirements of IEC 61672-1:2013
During electrostatic discharge, the influence of the displayed results could be observed.
No changes in instrument operation state, configuration or stored data corruption were found out.
Effect of ambient pressure < 0.01 dB/kPa