Setra System Model 470 - Manual (Page 26)

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To change the Stability Indicator Limit, use the following procedure:
1. Use the CONVERT function (see Section 4.2) so that the 470 reports data in units of
pressure in response to an interrogation. (i.e., the transducer should not be reporting in units
of altitude.)
2. Transmit -1111S. This is the Stability Indicator access code.
3. Transmit the new stability limit in the engineering units which are now in use.
4. Transmit S.
For example, to set the Stability Indicator to .001 psi, transmit:
-1111S.001S