Gbs-elektronik MCA-527 Firmware Commands Manual de usuario descargar pdf (Pagina 21)

Description of the MCA527 Firmware Commands

Command name CMD_SET_TTL_LEVELS

Compatibility New MCA527 command.

Execution right Necessary

Description The command allows to change the low level (ll) and the high level (hl) for TTL input signals. The low

level must be lower than the high level. The default levels are 0.8V and 2.0V, which are the standard

levels for TTL input signals.

Micro version

: low level = 6 … 23 * 0.1V, high level = 7 … 24 * 0.1V

Other versions: low level = 1 … 99 * 0.1V, high level = 2 … 100 * 0.1V

The command is ignored and responds with an error value if a measurement is still running.

Format integer integer integer integer integer integer

Parameter preamble command ll hl 0 end flag

Byte string (HEX) A5 5A 27 01 ll 00 hl 00 00 00 B9 9B

Command name

CMD_SET_OSCI_TRIGGER

Compatibility New MCA527 command.

Execution right Necessary

Description The command allows to set source index (s), resolution index (r), threshold (t) and position (p) for the

oscilloscope mode.

s: 0 … 4

r: -5 … +13

t: 0 … 16383

p: 0 … 499

The oscilloscope mode is described in document: “MCA527 Oscilloscope Mode”.

Format integer integer char char integer integer integer

Parameter preamble command s r t p end flag

Byte string (HEX) A5 5A 11 01 s r t

B9 9B

Command name

CMD_SET_CORE_CLOCK

Compatibility New MCA527 command (since firmware version 13.04).

Execution right Necessary

Description The command allows to set the core clock of the MCA527 processor.

Full, Lite and OEM version: clk: 1 … 6 * 100 MHz

Micro version: clk: 1 … 4 * 100 MHz

Format integer integer integer integer integer integer

Parameter preamble command clk 0 0 end flag

Byte string (HEX) A5 5A 2D 01 ckl

00 00 00 00 00 B9 9B

Remarks The default core clock is 400 MHz. This is sufficient in most cases. The change of the core clock is

only necessary in exceptional cases. Note, a higher core clock consumes more power.

21 Since firmware version 14.05, the command considered the special characteristic of the micro version. If pin AIN- and pin VCM

are tied together, a voltage from 0.5 to 2.5V can be applied between pin AIN+ and pin GND.

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Gbs-elektronik MCA-527 Firmware Commands Manual de usuario Pagina 21

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