SRS Labs QMS 100 Series, Руководство пользователя

Страница: 177 / 280

RGA Command Set 3-53
Technical Reference
STparam, param:0.0000 - 100.0000, ?
Description : Total Pressure Sensitivity Factor storage.
Echo: Query Response
Store a value of Total Pressure Sensitivity, expressed in units of mA/Torr, in the non-volatile memory of
the RGA ECU.
Important : The sensitivity factor is not used internally by the RGA to turn ion currents into total
pressures, it is simply stored so it can be read and used by any host computer connected to the instrument.
Total Pressure Sensitivity factors are gas specific, probe specific, and highly dependent on the ionizer
conditions and on aging of the probe.
Note : The parameter loaded at the factory is the total pressure sensitivity factor for N
2
under default
ionizer conditions.
Parameters:
STparam, param:0.0000 - 100.0000: The parameter, interpreted as a total pressure senstivity factor in
units of mA/Torr, is stored in non-volatile memory of the ECU. Typical value is 0.01 under default ionizer
settings.
ST?: Total Pressure Sensitivity factor query.
Error Checking:
Parameter must be within specified range.
No default value is available.