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Cmd_stop, Cmd_set_general_mode, Cmd_set_mode – GBS Elektronik MCA-527 Firmware Commands User Manual

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MCA527

Command name

CMD_STOP

Compatibility

Compatible to the MCA166 command.

Execution right

Necessary

Description

In MCA mode the measurement is stopped at the next integer real time, otherwise immediately

Format

integer

integer

integer

long

integer

Parameter

preamble

command

0

0

end flag

Byte string (HEX)

A5

5A

43

00

00

00

00

00

00

00

B9

9B

MCA Mode Commands:

Command name

CMD_SET_GENERAL_MODE

Compatibility

New MCA527 command

Execution right

Necessary

Description

The MCA527 is not only usable as a MCA. It can also alternatively be used as an oscilloscope, as a
transient recorder or as a time stamp recorder.
Depending on the parameter, the MCA527 serves as:

0 = MCA
1 = Transient recorder (records ADC raw data)
2 = Oscilloscope
3 = Time stamp recorder (level triggered signals)

11,12

4 = Time stamp recorder (edge triggered signals)

12

5 = Time stamp recorder (AHRC = analog high rate counting)

12

The command sets the MCA527 to the required general mode by activating the previous specified
setup parameters.
The command is ignored and responds with an error value if a measurement is still running.

Format

integer

integer

integer

long

integer

Parameter

preamble

command

mode

0

end flag

Byte string (HEX)

A5

5A

05

01

mode 00

00

00

00

00

B9

9B

Remarks

The oscilloscope mode is described in the document “Description of the MCA527 Oscilloscope
Mode” (MCA527_Oscilloscope_Mode_

XXXX_XX_XX

.pdf).

Command name

CMD_SET_MODE

Compatibility

Identical to the MCA166 command.

Execution right

Necessary

Description

Depending on the parameter: MODE_MCA = 0 or MODE_MCS = 1, the command sets the MCA527
to the required mode by activating the previous specified setup parameters.
The command is ignored and responds with an error value if a measurement is still running or if
gating mode 'sort by time' (see CMD_SET_GATING) is set.

Format

integer

integer

integer

long

integer

Parameter

preamble

command

mode

0

end flag

Byte string (HEX)

A5

5A

45

00

mode 00

00

00

00

00

B9

9B

11 Note, there are hardware modifications without offset DAC and without hardware-based coarse gain. In such a case, the general

mode 3 works only properly if the input signal is adjusted by default for this mode.

12 The time stamp recorders are no standard components of all firmware versions. The availability of the time stamp recorders is

indicated by the corresponding flag within the parameter “MCA features” (byte offset 8) returned by the command
COMMAND_QUERY_STATE527.

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