NetScan User’s Manual D-1

Appendix D

Registers, Data Formats, & Queries
Reference Note: If you are not familiar with programming you will probably gain more understanding of
the program-related portions of this appendix by first reviewing Appendix A, API Commands.
Contents
Using the High/Low/Last (HLL) Registers--------------------------------------------------------------------------- D-2
What is Contained in the HLL Registers---------------------------------------------------------------------------------------D-2
Accessing the HLL Registers----------------------------------------------------------------------------------------------------D-2
Data Format (F)----------------------------------------------------------------------------------------------------------- D-5
Data Input Formats----------------------------------------------------------------------------------------------------------------D-5
Data Output Formats--------------------------------------------------------------------------------------------------------------D-6
Engineering Units Data Format -------------------------------------------------------------------------------------------------D-6
Binary Data Format ---------------------------------------------------------------------------------------------------------------D-8
Counts Data Format---------------------------------------------------------------------------------------------------------------D-8
Configuring Power-Up State ------------------------------------------------------------------------------------------- D-9
Queries--------------------------------------------------------------------------------------------------------------------- D-10
Query (?) Commands -----------------------------------------------------------------------------------------------------------D-10
U Status Commands-------------------------------------------------------------------------------------------------------------D-11
Status, Event Reporting, and Mask Registers----------------------------------------------------------------------D-11
Theory of Operation-------------------------------------------------------------------------------------------------------------D-12
Calibration Status Register-----------------------------------------------------------------------------------------------------D-14
Error Source Register-----------------------------------------------------------------------------------------------------------D-14
Event Status Register -----------------------------------------------------------------------------------------------------------D-14
Event Status Enable Register --------------------------------------------------------------------------------------------------D-14
Status Byte Register------------------------------------------------------------------------------------------------------------- D-15
Using Status Reporting Registers-------------------------------------------------------------------------------------D-16
Trigger Latency---------------------------------------------------------------------------------------------------------- D-17
Trigger Overrun ---------------------------------------------------------------------------------------------------------D-17
Buffer Overrun----------------------------------------------------------------------------------------------------------- D-17
Buffer Overrun With One Trigger Block-------------------------------------------------------------------------------------D-18
Buffer Overrun With Multiple Trigger Blocks------------------------------------------------------------------------------ D-18
Real Time Clock----------------------------------------------------------------------------------------------------------D-18
Open Thermocouple/Range Error Checking-----------------------------------------------------------------------D-18