User manual

2.3.38 AcqrsD1_configExtClock
Purpose
Configures the external clock of the digitizer.
Parameters
Input
Name Type Description
instrumentID ViSession Instrument identifier
clockType ViInt32 = 0 Internal Clock (default at start-up)
= 1 External Clock, continuously running
= 2 External Reference (10 MHz)
= 4 External Clock, with start/stop sequence
inputThreshold ViReal64 Input threshold for external clock or reference in mV
delayNbrSamples ViInt32 Number of samples to acquire after trigger (for
digitizers using 'clockType' = 1 only!)
inputFrequency ViReal64 The input frequency of the external clock, for
clockType = 1 only
sampFrequency ViReal64 The desired Sampling Frequency, for clockType = 1
only
Return Value
Name Type Description
status ViStatus Refer to Table 2-1 for error codes.
Discussion
When clockType is set to 1 or 4, the parameters of the function AcqrsD1_configHorizontal are ignored!
Please refer to your product User Manual, for the conditions on the clock signals, and to the Programmer’s
Guide section 3.16, External Clock, for the setup parameters and the theory of operation.
Programmer’s Reference Manual Page 75 of 210