Specifications

Command

Return

SIwxyz

none

Function:

This command sets the integration time for acquiring a count from the voltage-to-

frequency converter. The four-digit integer value of wxyz is equal to the total

integration time in units of 0.01 seconds. Thus, a value of 0100 will set the

integration time to 1.00 seconds.

Warning:

Values less than 0100 (1.00 seconds) are of limited value because the rise time and

noise of the system electronics demand longer integrations. The maximum count

that can be retained is 2 bytes wide (2

), which will limit long integration times.

Table 4-3. Set Integration Time Command.

Command

Return

SCOUNT

C=vwxyz CR LF

Function:

This command starts an integration for the selected integration time and gain

settings. The vwxyz output value is the integer count. The left side of the value is

padded with zeros so that a five-character value is always sent. Thus, a count of

100 is sent as C=00100 CR LF.

Warning:

The maximum value that can be sent is two bytes wide or 65536 decimal. During

the integration time, the SSP-4 will not accept any serial inputs.

Table 4-4. Start Count Command