Svantek SV 977D User Manual

243
SV 977D User Manual - Appendixes
Maximum peak voltage 28 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)
Typical stabilization time after change in
environmental conditions by 20C
1 hour
Nominal delay between operating of the
<Start> (Reset) key and beginning of a
new measurement
≥ 1 sec
Time shift after completion of a
measurement, before a measurement is
shown
< 1 sec
Note: When SV 977D 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 dB/uV/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
Effect of temperature < 0.5 dB (from -10C to + 50C)
Operating temperature from -10C to + 50C
Storage temperature from -20C to + 60C
Calibration
Acoustical - with the SV 36 sound calibrator (or equivalent):
• Calibration level
114.0 dB (equal to the calibrator pressure level - see calibration
chart of the used calibrator)
Note: The above levels correspond to 114 dB of calibrator’s sound pressure. If the calibrator has
a different sound pressure than 114 dB, the calibration levels must be accordingly adjusted.

Svantek SV 977D Specifications

General

Brand	Svantek
Model	SV 977D
Category	Measuring Instruments
Language	English