HP (Hewlett-Packard) RM500SL User Manual
0611
RM500SL User’s Guide Version 2.8
Page 49
9.7
Manual control procedure
FastFacts 9.7: Manual control procedure
9.8
Sound level meter using manual control
FastFacts 9.8: Sound level meter using manual control
Manual control displays the reference microphone SPL, the coupler microphone
SPL, their difference in dB (gain) and coupler microphone signal distortion at any
selected 1/12
SPL, their difference in dB (gain) and coupler microphone signal distortion at any
selected 1/12
th
octave frequency and at a selected input level from 40 to 90 dB (in
5 dB steps) and at 0 dB (off).
1) Press <Tests>, then highlight and
<PICK> [Manual control].
2) Highlight and <PICK> the Level
window, then highlight and <PICK> the
desired stimulus level from the drop-
down list.
desired stimulus level from the drop-
down list.
3) Highlight and <PICK> the Frequency
window, then highlight and <PICK> the
desired frequency from the drop-down
list. (Distortion measurement data is
available only from 200-4000 Hz.)
desired frequency from the drop-down
list. (Distortion measurement data is
available only from 200-4000 Hz.)
4) Highlight and <PICK> [Start test] to
start the test. [Start test] changes to
[Stop Test]. To stop the measurement,
highlight and <PICK> [Stop test]. You
may change Level and Frequency
without stopping the test.
[Stop Test]. To stop the measurement,
highlight and <PICK> [Stop test]. You
may change Level and Frequency
without stopping the test.
When set for a stimulus level of 0 dB (off), the Manual control mode allows the
RM500SL to be used as a sound level meter. Sound at the HIT reference
microphone and the coupler microphone may be analyzed by 1/12
RM500SL to be used as a sound level meter. Sound at the HIT reference
microphone and the coupler microphone may be analyzed by 1/12
th
octave, A-
weighted or C-weighted filters. A and C-weighted measurements are limited to
frequencies above 100 Hz and the averaging time and update rate are 384 ms.
frequencies above 100 Hz and the averaging time and update rate are 384 ms.
1) Press <Tests>, then highlight and <PICK> [Manual control].
2) Highlight and <PICK> the Level window, then highlight and <PICK> 0 dB
stimulus level from the drop-down list.
3) Highlight and <PICK> the Filter window, then highlight and <PICK> 1/12
th
octave, A-weighted, or C-weighted from the drop-down list.
4) For 1/12
th
octave filter, highlight and <PICK> the Frequency window, then
highlight and <PICK> the desired frequency from the drop-down list.
5) Highlight and <PICK> [Start test] to start the test. [Start test] changes to [Stop
Test]. To stop the measurement, highlight and <PICK> [Stop test]. You may
change Level and Frequency without stopping the test.
change Level and Frequency without stopping the test.
NOTE: A microphone extension cable (VA-130) is available from Audioscan.
Standard audio extension cables should not be used. They will substantially
increase noise levels.
Standard audio extension cables should not be used. They will substantially
increase noise levels.