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| * covers range from 90 mHz to 22.1 kHz. | | * covers range from 90 mHz to 22.1 kHz. |
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| Filters for 1/1 and 1/3<sup>rd</sup> octave analysis conform to the IEC 225 standard.
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| The OR7933 analyzer satisfies requirements from standard ANSI S1.11 - 1986 Order 3 Type 1D optional and extended range, based on maximum flat Butterworth filters. Filters bandwidth is adjusted, as recommended in ANSI 1.11, for minimum white noise bandwidth error.
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| For more information on filter bank setup, see <font color="#FF0000">'''8.2.14.3''' </font>'''Settings <nowiki>|</nowiki> Analysis - High Filter''' and <font color="#FF0000">'''8.2.14.4''' </font>'''Settings <nowiki>|</nowiki> Analysis - Low Filter '''chapters.
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| ----
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| ----
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| ----
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| In exponential modes, detectors are always running and trigger events are only used to store associated results in the spectrum waterfall memory. | | In exponential modes, detectors are always running and trigger events are only used to store associated results in the spectrum waterfall memory. |
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| ----
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| ----
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| ----
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| The other modules used are:
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| * An arming module that is used after a START command to arm trigger for the first event detection.
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| * A trigger module based on free start, manual, input level, delta time, tachometer with ∆ RPM capabilities and input with ∆ V variation.
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| For more information about arming and triggering, see corresponding chapters in Real Time FFT mode:
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| <font color="#FF0000">'''4.2.8 '''</font>'''RPM Tach Setup'''
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| <font color="#FF0000">'''4.2.11 '''</font>'''Arming Setup'''
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| <font color="#FF0000">'''4.2.12 '''</font>'''Triggering Setup'''
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| <font color="#FF0000">'''4.2.13 '''</font>'''Input Level Setup'''
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| <font color="#FF0000">'''4.2.14 '''</font>'''Delta Level Setup'''
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| An internal generator is also available (see <font color="#FF0000">'''4.2.19''' </font>'''Generator Setup''' in the real time FFT mode).
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| The PC ensures the real-time display functions of the traces, the management of the graphic zooms, the decoding and execution of the commands linked to the menus.
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| The '''OR7933''' analyzer can manage up to 16 channels that can be selected among up to 16 inputs. A special dialog box (see <font color="#FF0000">'''8.2.7''' </font>'''Input Preprocess Setup''' chapter in the real time mode chapter) is used to link the input channels to a preprocess on the analyzer hardware.
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| {|border="0" cellspacing="2" width="100%"
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| |'''F 197 804 1'''
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| |'''8-11'''
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| |}
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| ----
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| '''Nth OCTAVE ANALYZER'''
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| '''REAL TIME 1/Nth OCTAVE ANALYZER'''
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| ----
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| {|border="0" cellspacing="2" width="100%"
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| |'''8-50'''
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| |'''F 197 804 1'''
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| == NVGate 1/n octave plug in== | | == NVGate 1/n octave plug in== |