CompuScope SDK Manua.. - Egmont Instruments

trigger_level level at which trigger event is set to occur. Can be any value between 0and 255, with 0 as the minimum and 255 as the maximum for 8 bitCompuScope cards and 0-4095 for 12, 14, and 16 bit CompuScopecards. A value of 0 sets the trigger level to minus full scale and a valueof 255 or 4095 sets the trigger level to plus full scale. The value isimplemented on the CompuScope hardware by thegage_trigger_control_2 routine.trigger_slopestatus of the current trigger slope. To set, use either GAGE_POSITIVEor GAGE_NEGATIVE with a call to gage_trigger_control orgage_trigger_control_2 routine. This has no effect when using asoftware trigger.trigger_sourcestatus of current trigger source. To set, use either GAGE_CHAN_A,GAGE_CHAN_B, GAGE_EXTERNAL or GAGE_SOFTWARE witha call to gage_trigger_control or gage_trigger_control_2 routine.trigger_resresolution of trigger depth. This value is the minimum amount bywhich the post-trigger depth may be changed for the currentCompuScope hardware.multiple_recording flag to determine if a multiple record has been set.sample_offsetthe value of the data returned from the card that equals 0 volts. Forinstance, this value is 127 for the CompuScope 8500.sample_resolution number of levels between 0 and positive full scale or 0 and negativefull scale. For instance, this value is 128 for the CompuScope 8500.sample_bitsnumber of sample bits in the current CompuScope hardware. Forinstance, this will be 8 for 8 bit CompuScopes.external_clock_delay current clock delay used to synchronize an external clock with theCompuScope hardware. Should be 0 if the sample rate is greater than 5MHz or the greater of 1 and (10,000 / external_clock_rate), otherwise.external_clock_rate current external clock rate when using an external clock. This valuewill be used as the sample rate in single channel mode. Depending onthe CompuScope model, there may be an integer factor between thisvalues and the sample rate in dual channel mode.sample_ratecurrent sample rate.memptrpointer to the segment:offset address of the start of CompuScope RAM.trigger_level_2 level at which second trigger event is set to occur. Can be any valuebetween 0 and 255, with 0 as the minimum and 255 as the maximumfor 8 bit CompuScope cards and 0-4095 for 12 bit CompuScope cards.The value is implemented on the CompuScope hardware by thegage_trigger_control_2 routine. Not all the CompuScopes have thiscapability.trigger_slope_2 status of the second trigger slope. To set, use either GAGE_POSITIVEor GAGE_NEGATIVE with a call to gage_trigger_control_2 routine.This has no effect when using a software trigger. Not all theCompuScopes have this capability.trigger_source_2status of the second trigger source. To set, use eitherGAGE_CHAN_A, GAGE_CHAN_B, GAGE_EXTERNAL orGAGE_SOFTWARE with a call to gage_trigger_control_2 routine.Not all the CompuScopes have this capability.Page 58 Appendix A CompuScope SDK Manual