Peterson AutoStrobe 490 User Manual
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KEY= C
A=440 C 00 ¢
MAN
SETUP MODE
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2
3
4
2
KEY= C
A=440 C 00 ¢
AUTO
SETUP MODE
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2
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4
Accessing Auto Note Select Mode
While the MAN MODE is indicated, the selection of note will not be affected by the incoming audio signal and must be
selected by pressing one of the note buttons below the strobe disc. This feature is useful when extraneous audio tones are
present in the environment (making automatic selection difficult) or when one purposely wishes to measure tuning of various
harmonics (partials) present in the audio input.
NOTE: The automatic note detection feature is based on reference tuning of A=440 Hz and Global Cent Offset (which
appears on the second line of the RUN screen) set to 0 cents. Any deviation from these tuning references will limit proper
note sensing to less than the usual ±50 cents range. For most applications, deviations in the range of A430 to A450 or,
separately, up to about ±40 cents Global Cent Offset will yield reasonable results for automatic note selection. Of course,
there are no limitations over the full range of offsets available in the tuner when using MANual note selection.
3. SETUP MENUS—CHOOSING POWER-UP DEFAULTS / TEMPERAMENTS
a) DESCRIPTION AND INITIAL ACCESS
The AutoStrobe 490 allows the user to customize the power-up condition of several important parameters which a given user
might otherwise have to set each time the unit is turned on. This capability is found under the SETUP menu. In addition,
temperaments may be created, edited, activated, and stored or deleted from non-volatile memory in a separate branch under
this menu.
The SETUP menu is activated from the normal RUN screen by pressing the "1" button:
KEY= C
A=440 C 00 ¢
AUTO
SETUP MODE
1
2
3
4
1
SETUP MENU
PLEASE SELECT MODE
OPTN FILE RUN DIAG
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Accessing the Setup Screen
b) VIEWING AND MODIFYING PARAMETER DEFAULTS
The "OPTN" or Option selection provides further menu screens, each of which is dedicated to viewing and/or altering a given
SETUP parameter. The SETUP parameters, their valid ranges, and the buttons used to alter them are summarized below: