Science Operations
 
 

SOHO Telemetry Subformat Definitions — Feb 10,11 1997 to Sept 25,26 1997

February 10,11 1997: Submodes 5 and 6 were added, respectively.

Submode 5 was added into the programmable submode. Submode 5 added 12 extra packets to LASCO/EIT (24 —> 36 packets) and became the new "nominal" operating submode replacing Submode 1. Submode 1 was patched to give all SUMER science telemetry to LASCO/EIT and renamed as Submode 6.

Number of Packets Acquired Per APID in Each Subformat

APID Packet Size (in bytes) Submode 2 (LASCO/EIT high) Submode 3 (CDS high) Submode 4 (SUMER high) Submode 5 (NOMINAL) Submode 6 (LASCO/EIT extra)
CDS LR 300 12 - 12 - -
MR 300 - - - 72 72
HR 300 - 144 - - -
LASCO/EIT LR 412 - 24 24 36 72
HR 348 144 - - - -
SUMER LR 416 - - - 48 -
HR 416 - - 96 - -

Telemetry Rate (bits/s) Acquired Per APID in Each Subformat

APID Packet Size (in bytes) Submode 2 (LASCO/EIT high) Submode 3 (CDS high) Submode 4 (SUMER high) Submode 5 (NOMINAL) Submode 6 (LASCO/EIT extra)
CDS LR 300 1921.5 - 1921.5 - -
MR 300 - - - 11529.0 11529.0
HR 300 - 23058.0 - - -
LASCO/EIT LR 412 - 5277.7 5277.7 7916.6 15833.2
HR 348 26747.3 - - - -
SUMER LR 416 - - - 10657.9 -
HR 416 - - 21315.9 - -