"GEM Low-Rate Science Counter" (APP/LHK)

View Options: (help)

Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Ancestry:

0x000	pkt	Lrs0
0x01C	str	GEMLRS gemlrs

Definition:

Alignment:	4-byte boundary
APID:	551/0x227
Attribute(s):
Length:	160 bits (20 bytes)
Offset:	0x01C

Description:

Contains 4 GEM low-rate science counter values.

Layout: (hide detail; help)

GEM Low-Rate Science Counter (GEMLRS) Telemetry Field Format
0x	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
01C	GEMLRSLIVE live
020	GEMPRSCL presc
024	GEMLRSDISC disc
028	GEMLRSSENT sent
02C	GEMLRSDEAD dead

GEMLRS (str)
|  GEMLRSLIVE live (fld)
|  GEMPRSCL presc (fld)
|  GEMLRSDISC disc (fld)
|  GEMLRSSENT sent (fld)
|  GEMLRSDEAD dead (fld)

typedef struct _LHK_GEMLRS {

    /* GEM low-rate science livetime counter */
    unsigned int         live;

    /* Low-rate science prescaled counter */
    unsigned int         presc;

    /* GEM low-rate science discarded counter */
    unsigned int         disc;

    /* GEM low-rate science sent counter */
    unsigned int         sent;

    /* GEM low-rate science dead zoned counter */
    unsigned int         dead;

} LHK_GEMLRS;

Fields:

GEMLRSDEAD (index)

Attribute(s):  

Brief:  "GEM low-rate science dead zoned counter"

Instance(s):  dead

The GEM maintains a counter of the number of times that a window failed to open because one or more enabled conditions occurred within the dead zone. If a condition occurs within the dead-zone, but is not enabled, the counter will not increment. If more then one enabled condition occurs simultaneously within the dead-zone, the counter increments by only one.

GEMLRSDISC (index)

Attribute(s):  

Brief:  "GEM low-rate science discarded counter"

Instance(s):  disc

Window turns discarded due to busy

GEMLRSLIVE (index)

Attribute(s):  

Brief:  "GEM low-rate science livetime counter"

Instance(s):  live

1/deadtime statistics

GEMLRSSENT (index)

Attribute(s):  

Brief:  "GEM low-rate science sent counter"

Instance(s):  sent

Window turns which result in a sent message

GEMPRSCL (index)

Attribute(s):  

Brief:  "Low-rate science prescaled counter"

Instance(s):  presc

Window turns discarded due to prescaling