CompuScope SDK Manua.. - Egmont Instruments

trigger_sensitivitytrigger_bandwidthtrigger_sensitivity_2trigger_bandwidth_2max_trigger_sensitivitytrigger_address_offsetuser_buffer_paddingThe trigger sensitivity of trigger source 1. The trigger sensitivity isspecified in one-tenths percent of the full-scale input range for theCompuScope hardware that supports this feature. The default value fortrigger_sensitivity is 100, which implies 10 percent of the input rangeof the selected trigger source.The trigger bandwidth of trigger source 1. Following options areavailable for CompuScope hardware that supports this feature:GAGE_FULL_BW 0GAGE_HIGH_REJECT 0x20GAGE_LOW_REJECT 0x40GAGE_NOISE_REJECT 0x60GAGE_TRIG_BW_EXPAND // not supported, future devtGAGE_BW_MASK0xE0The trigger sensitivity of trigger source 2. Reserved for future use.The trigger bandwidth of trigger source 2. Reserved for future use.The maximum trigger sensitivity of the selected trigger source.This field contains the trigger address offset value. Thetrigger_address_offset value should be ORed with the CHANparameter when calling gage_calculate_mra_address routine.The number of extra bytes required in allocation of the user buffer intowhich data are transferred by the gage_transfer_buffer_2 andgage_transfer_buffer_3 routines. The size of the user buffer must beaugmented by this parameter. Follow the guidelines below wheneveryou need to compute the size of buffer for acquisition:User_buffer_size = total number of samples to be acquired*sample_size + user_buffer_paddingbus_master_supportTotal number of samples to be acquired is the sum of pre and posttrigger depth. Sample_size equals 1 for 8 bit CompuScope cards and isset to 2 for 12,14 and 16 bit CompuScope cardsValue used to determine if the CompuScope hardware and the PCI slotthat is currently housing the CompuScope card, supports busmastering.In order to transfer the on-board CompuScope data to thePC RAM using bus-mastering, both options must be available i.e.CompuScope hardware as well as the PCI slot must be bus-masteringready.Page 60 Appendix A CompuScope SDK Manual