Page 30 - iSEMconCatalog

 Temperature drift Coefficient of SPL is -0.08 to -
0.012 dB/K
SOUND CALIBRATORS  Humidity 5 to 95% relative humidity
 Power supply: 9V standard transistor battery
(Low Batt control)
SOUND CALIBRATOR SC-1
 Construction Solid state integrated circuitry in
 9V battery powered  stainless steel/plastic housing
Size: dia 40mm [1.57"], x 132mm [5.24"]
 94dBspl 110dBspl switchable
 ¼“ or ½“ or individual adapters
 stainless steel body

Theory of operation

The oscillator is a crystal stabilized squarewave
oscillator followed by a squarewave to sine
converter. Automatic gain control and
temperature compensation are built-in. The
oscillator output drives the transducer and is
converted to sound.

Version with MB-190 BOX (case)

General description

The SC-1 sound calibrator is a one frequency
dual amplitude,self contained field calibrator that
quickly and also precisely verifies the accuracy
and the sensitivity of microphones. The unit
generates a 1kHz reference tone at 94 and 110
dB SPL. The calibrator uses a single 9 Volt
battery.

The SC-1 consists of a amplitude switchable
constant frequency oscillator, a transducer and a Ordering information :
microphone coupler. The coupler accepts a large
variety of microphones. Separate 1/2" , 1/4" and
8mm adapters are available (others upon Order No. Name
request). 230111 SC-1 + CA-1/2 + CA-1/4
Sound Calibrator
Regulation of the SPL-output is inherently 230112 SC-1 + CA-1/2 + CA-1/4 + case
provided against battery drain. Sound Calibrator
230110 SC-1 Sound Calibrator
Specifications
 output frequency 1kHz ± 0.2% 230210 CA ¼ Adapter
 output amplitude switchable 94dB / 110dB 230220 CA ½ Adapter
 accuracy ± 0.5dB @ 20ºC [68ºF] and 230230 CA 8 Adapter
1013mbar [760mm Hg]
 Operating Temperature -5ºC to 55ºC [40ºF to 230290 CA cust, specifiy diameter
130ºF]

Page 30 iSEMcon GmbH