Setra System Model 470 - Manual (Page 20)

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4. Transmit S, for SETUP.
5. If the elevation was in meters, transmit U, for CONVERT.
6. Transmit S, for SETUP.
For example, if the station elevation is 1023 feet, transmit:
SB1023SS
Or, if the station elevation is 237 meters, transmit:
SB237SUS
7. The Setra 470 is now in DASI mode and reports barometric pressure reduced to sea
level in response to an INTERROGATION command, indicated by “SEA LEVEL”.
8. To switch from reporting true barometric pressure to corrected sea level pressure and
back, transmit B, for SEA LEVEL.
You must re-enter the station elevation (steps 1 through 6) if you move the transducer, or shut
off the power.
When you transmit B, for SEA LEVEL, in order to begin reporting pressure corrected to sea
level, the ZERO/TARE value (Section 4.8) is cleared (set to zero) automatically to ensure that
absolute sea level pressure is reported.