How to Change STIX Integration Time
Revision as of 10:36, 13 March 2023 by Daniel.ryan (talk | contribs) (Created page with "== Introduction == STIX uses dynamic time binning onboard to ensure that all onboard storage and telemetry is not wasted by having time bins that only have background counts....")
1 Introduction
STIX uses dynamic time binning onboard to ensure that all onboard storage and telemetry is not wasted by having time bins that only have background counts. This scheme relies on 3 parameters:
- Minimum integration time
- Maximum integration time
- Maximum counts per bin.
As STIX accumulated counts, the end of the time bin is determined IF:
- The minimum integration time is exceeded
AND
- Maximum integration time OR maximum counts is reached.
Therefore to customise this scheme, we need to alter these parameters in the ASW (onboard application software).
2 Procedure
Once Starlet has been open and an IOR or PDOR has been set up, do the following:
- Change STIX into Configuration mode. Be sure to truncate the calibration run if switching from Nominal mode.
- Click "Add Sequence" and select command sequence AIXF414A Load ASW Parameter v02. This enables you to change an application software parameter. In the pop-up window that appears set the following parameters:
- Parameter ID = 312 (minimum integration time) or 313 (maximum integration time) or 314 (maximum counts)
- Parameter subID = 0. This means you are changing the value of the parameters rather the min and max allowed values which have different subprocess numbers.
- Integration times are given in units of 0.1s - 1. For example, 1s == 9 (1s / 0.1s - 1)
