ADC 100 Especificações descarregar pdf (Página 13)

1 - channel B only

2 - both channels

no_of_channels specifies the number of channels used.

An example of a call to this routine using both channels A and B is:

adc100_set_interval (10000, 100, 2);

The routine returns the actual time to collect this number of samples. This actual time may be greater than the

target time if you specified a sampling interval that is faster than your computer can manage. If the specified

sampling rate was too fast, you have the following choices:

if the total time is important, collect fewer than the ideal number of samples so that the total block time is

correct

if the number of samples is important, collect the same number of samples then allow for the fact that

they took longer to collect.

adc100_get_values

PREF 1 unsigned long PREF2 adc100_get_values (

unsigned short HUGE * buffer_a,

unsigned short HUGE * buffer_b,

unsigned long no_of_values);

This routine reads in a block of values. It collects readings at intervals and from channels specified in the most

recent adc100_set_interval call.

If a key is pressed while collecting, the routine will return immediately. The return value will be zero if a key was

pressed, and the total time in micro-seconds if a block was successfully collected.

When collecting data from just one channel, the parameter for the other buffer can either be set to NULL, or

pointed at the same buffer.

adc100_get_times_and_values

PREF1 unsigned long PREF2 adc100_get_times_and_values (

long HUGE * times,

unsigned short HUGE * buffer_a,

unsigned short HUGE * buffer_b,

unsigned long no_of_values);

This routine reads a block of values from the unit in the most recent adc100_open_unit or adc100_set_unit call. It

takes readings at nominal intervals specified in the most recent adc100_set_interval call, and returns the

actual times for each reading.

If a key is pressed while collecting, the routine will return immediately. The return value will be zero if a key was

pressed, and the total in micro-seconds if a block was successfully collected.

When collecting data from just one channel, the parameter for the other buffer can either be set to NULL, or

pointed at the same buffer.

adc100_get_unit_info

PREF1 short PREF2 adc100_get_unit_info (char * str, short str_lth, short line, short

port);

If the specified unit failed to open, this routine returns a text string which explains why the unit was not

opened.

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ADC 100 Especificações Página 13