HP E1433A User's Guide
The
Parameter Settings
Many parameters are
When possible, parameters are written to the hardware as soon as they are received. Sometimes, the parameter can’t be written to the hardware until the start of a measurement; in this case the value of the parameter is saved in RAM in the HP E1433A module until the measurement is started with e1432_init_measure. Some parameters can be changed while a measurement is running, but many do not take effect until the next start of a measurement.
Measurement initialization
This section describes the measurement initialization process in the HP E1433A.
The measurement initialization states, and the corresponding Sync/Trigger line transitions (with ‘H’ for high, ‘L’ for Low) are:
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Sync/Trigger line
Figure 4-4: Measurement initialization
The module enters the TESTED state after a reset. In this state, all of the module parameters may be set. The HP E1433A stays in the TESTED state until it sees a