94 dB & 114 dB
SOUND CALIBRATOR
Model : SC-942
FEATURES
Standard 94 dB and 114 dB/1000 Hz sound calibrator, useful to calibrate the " Sound
Level meter " precisely.
SPECIFICATIONS
Frequency 1000 Hz ± 2 %.
Sound Pressure Level 94 dB range 94 dB ± 0.75 dB.
114 dB range 114 dB ± 0.9 dB.
Suitable Microphone Type 0.5 inch or 1 inch microphone.
Total harmonic distortion 94 dB range ± 2 %.
114 dB range ± 5 %.
Operating Temp. 0 to 50 ℃ (32 to 122 ℉).
Power Supply Heavy duty or Alkaline type, DC 9V battery. 006P,
MN1604 ( PP3 ) or equivalent, 2 PCs.
Power Consumption Approx. DC 7 mA.
Battery Check Build in " Battery test indicator "
Dimension Round 50 mm dia. x 82 mm.
Weight ( including batteries ) Approx. 350 g/0.77 LB.
Accessories Included Instruction manual............................................ 1 PC.
0.5" mic. adapter.............................................. 1 PC.
Adjust Screw Driver........................................... 1 PC.
Carrying case, CA-03......................................... 1 PC.
CALIBRATION PROCEDURES
1. Insert the microphone of " SOUND LEVEL METER " carefully all the way into
the coupler section of the SC-942.
2. Set the " Sound Level Meter " to a range suitable for measuring " 94 dB " or
" 114 dB ".
3. Set the " OFF/94 dB/114 dB " to " 94 dB " or " 114 dB " position.
A pure 1,000 Hz tone is produced.
4. Adjust the calibration VR (knob) of the " Sound Level Meter ". until that the
display reach to 94.0 dB or 114.0 dB exactly.
