Gbs-elektronik MCA-527 Firmware Commands Manual de usuario descargar pdf (Pagina 42)

MCA527

Command name CMD_QUERY_USER_DATA

Compatibility Compatible to the MCA166 command.

Execution right Not necessary

Description The command reads sixteen 32 bit values from the MCA memory.

e: 0 ... 255 start entry number

Format integer integer integer long integer

Parameter preamble command e 0 end flag

Byte string (HEX) A5 5A 5E 00 e 00 00 00 00 00 B9 9B

Result data array

Byte offset 0 Sixteen 32 bit values 32 bit [16]

Byte offset 64 unused 42 bytes

Byte offset 106 Command flag and parameters 8 bytes

Byte offset 114 unused 12 bytes

Byte offset 126 Checksum unsigned short

Byte offset 128 unused 4 bytes

Command name CMD_QUERY_SPECTRA

Compatibility Compatible to the MCA166 command.

Execution right Conditionally necessary (see buffer control and remarks)

Description The command reads the spectrum data.

n: Number of first channel and buffer control (Bit 15 ... 12)

c: Compress factor (1 ... 128)

Format integer integer integer integer integer integer

Parameter preamble command n c 0 end flag

Byte string (HEX) A5 5A 5B 00 n

00 00 B9 9B

Buffer control See CMD_QUERY_SPECTRA_EX (next command).

Result data array

Byte offset 0 Channels counts

unsigned long [32]

Byte offset 128 Read out buffer state unsigned short OCCUPIED = 0x2000

OVERRUN = 0x4000

FILLED = 0x8000

Byte offset 130 Checksum unsigned short

Remarks The compress factor determines how many channels each are combined to one value. This value is

the maximum of the combined channels. The transfer of combined channels can be used to reduce

data transfer if the data are only intended for displaying the accumulation of the spectrum during a

measurement. If the spectrum data are intended for evaluation, the whole spectrum with compress

factor 1 has to be transferred.

See also the remarks of CMD_QUERY_SPECTRA_EX (next command).

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Gbs-elektronik MCA-527 Firmware Commands Manual de usuario Pagina 42