Stanford Research Systems SR785, Руководство по эксплуатации и программированию

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Order Frequency Menu 4-19
SR785 Dynamic Signal Analyzer
Order Frequency Menu
When the Measurement Group is Order, this menu sets parameters related to which
orders the SR785 will compute and track.These parameters govern the measurements on
both displays. See ‘Order Analysis’ in Chapter 2 for a discussion about order
measurement fundamentals.
Max RPM
Set the maximum rotational speed allowed during order measurements. The maximum
rpm can take on a value between that specified by Min RPM and a value calculated from
the Max Order by the formula: max(Max RPM) = 60 * 40,000/Max Order. Selecting a
lower Max RPM will allow calculation of higher orders.
Command: ORMX (?) d {, f}
Min RPM
This parameter does not affect the way order measurements are calculated by the SR785.
It merely provides a default lower value by which to scale measurements whose x-axis is
RPM, such as RPM profiles and Tracked Orders.
Command: ORMN (?) d {, f}
Max Order
Specifies the maximum order, i.e. multiple of the rotational speed, calculated by the
SR785. Allowed values are between 3 and 200. Choosing a higher Max Order will limit
the allowed range of Max RPM.
Command: OMAX (?) d {, f}