Contacta IL-CONTACTA-FSM Manual do utilizador - Página 7

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Method II - Pink noise signal Cont.
Method II - Pink noise signal Cont.
Record the RMS level readings for each of the frequencies`. As in method
Record the RMS level readings for each of the frequencies`. As in method
I if the level does not vary by more than ±3dB the sys-tem as installed will
I if the level does not vary by more than ±3dB the sys-tem as installed will
meet the IEC specification. This method was requested by the field
meet the IEC specification. This method was requested by the field
engineer so they could run the test with one instrument without
engineer so they could run the test with one instrument without
continually adjusting the frequency source. It also makes it easy to
continually adjusting the frequency source. It also makes it easy to
conduct the test in more than one location.
conduct the test in more than one location.
Headphone / Full Spectrum Output
Headphone / Full Spectrum Output
The headphone output jack serves two purposes: First it can be used to
The headphone output jack serves two purposes: First it can be used to
monitor the loop program and gives you an "A Weighted" output signal
monitor the loop program and gives you an "A Weighted" output signal
that can be listened to with standard 1/8" stereo head-phones. To change
that can be listened to with standard 1/8" stereo head-phones. To change
the headphone volume slide the Use/Menu switch to Menu and use the
the headphone volume slide the Use/Menu switch to Menu and use the
Mode button to advance to Headphone Volume. Pressing the Select
Mode button to advance to Headphone Volume. Pressing the Select
button advances to the volume adjust screen where the top button raises
button advances to the volume adjust screen where the top button raises
the volume and the bottom but- ton lowers it. Once adjusted sliding the
the volume and the bottom but- ton lowers it. Once adjusted sliding the
switch back to Use will save the setting.
switch back to Use will save the setting.
A full (flat) spectrum output can be sent from this same con-nector which
A full (flat) spectrum output can be sent from this same con-nector which
could then feed a spectrum analyzer. This would show the signal level at
could then feed a spectrum analyzer. This would show the signal level at
the various frequencies and help to both confirm proper operation and
the various frequencies and help to both confirm proper operation and
asses the frequency and level of any interfer-ences.
asses the frequency and level of any interfer-ences.
To switch from "A-Weighted" to Flat: With the meter turned on slide the
To switch from "A-Weighted" to Flat: With the meter turned on slide the
Use/Menu switch over to Menu. Press the Mode button "A" once and you
Use/Menu switch over to Menu. Press the Mode button "A" once and you
will advance to the Headphone Jack setup screen. Then pressing the
will advance to the Headphone Jack setup screen. Then pressing the
Select button "B" you can choose either A-Weighted or Flat Spectrum.
Select button "B" you can choose either A-Weighted or Flat Spectrum.
Menu Adjustments
Menu Adjustments
In the Menu mode, selected by the slide switch, the following items can
In the Menu mode, selected by the slide switch, the following items can
be adjusted: Backlight level, headphone output type, headphone volume,
be adjusted: Backlight level, headphone output type, headphone volume,
display units (dB, mG, uT), and power timeout (5 to 30, or none.
display units (dB, mG, uT), and power timeout (5 to 30, or none.
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