Cmd_set_input_polarity, Cmd_set_mca_input, Cmd_set_mcs_input – GBS Elektronik MCA-527 Firmware Commands User Manual

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MCA527

Command name

CMD_SET_INPUT_POLARITY

Compatibility

Identical to the MCA166 command.

Execution right

Necessary

Description

The command sets the input polarity for the internal amplifier.
ip = 0

positive input signals

ip = 1

negative input signals

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

ip

0

end flag

Byte string (HEX)

A5

5A

56

00

ip

00

00

00

00

00

B9

9B

Command name

CMD_SET_MCA_INPUT

Compatibility

Compatible to the MCA166 command.

Execution right

Necessary

Description

The command sets the input to shaping or to direct.
ip = 0

input shaping (equivalent to 'input amplifier' of the MCA166)

ip = 3

input direct (0 … +3V, no PUR, obsolete, for compatibility with older applications)

ip = 4

input direct (0 … -3V, no PUR, obsolete, for compatibility with older applications)

ip = 5

input direct (polarity according to CMD_SET_INPUT_POLARITY, gain according to
CMD_SET_GAIN, no PUR)

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

ip

0

end flag

Byte string (HEX)

A5

5A

54

00

ip

00

00

00

00

00

B9

9B

Command name

CMD_SET_MCS_INPUT

Compatibility

Identical to the MCA166 command.

Execution right

Necessary

Description

The command sets the input for the Multi-Channel Scaler.
ip = 0

external TTL signals

17

ip = 1

internal count rate signal

ip = 2

counts only pulses with amplitude between LLD and ULD threshold

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

ip

0

end flag

Byte string (HEX)

A5

5A

55

00

ip

00

00

00

00

00

B9

9B

17 Note, there are hardware modifications without offset DAC and without hardware-based coarse gain. In such a case, this MCS

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

10

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