CIP-791 Support multiple receptors for Fsp Corr Subarray
Minor code changes to support multiple receptors for FspCorrSubarray
Tested and passed the following:
- 1 receptor
- 2, 3, 4 receptors
- no receptors (no "receptor_ids" entry in fsp configuration or empty list of "receptor_ids") - verified that all subarray receptors used in these cases
Edited by Jessie Newell