Preamplifier
SV 17 nominal preamplifier attenuation: 0.7 dB;
Voltage Type – power supply 1.5 mA@30 V
7 pin Lemo connector. See chapter C.3 for the
SV17 connector pin-out.
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)
Note: When the instruments are moved from a warm environment with high humidity,
to a colder environment, care should be taken not to produce condensation inside
the instruments. 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 40C 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 in the SLM the Z filter and time weighting F
are selected, and the SPL measurements are considered.
The greatest susceptibility is achieved when the SLM is placed parallel to the radio frequency field.
In addition, if there is an extension cable, the greatest susceptibility is achieved when the SLM and cable is
placed along field and the cable is coil as solenoid.
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 -10C to + 50C)
Operating range from -10C to + 50C
Storage from -20C to + 60C
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