User manual

2.3.91 AcqrsD1_restoreInternalRegisters
Purpose
Restores some internal registers of an instrument.
Only needed after power-up of a digitizer with the battery back-up option.
Parameters
Input
Name Type Description
instrumentID ViSession Instrument identifier
delayOffset ViReal64 Global delay offset, should be retrieved with
Acqrs_getInstrumentInfo (…, “DelayOffset”,
..) before power-off
If not known, use the value –20.0e-9
delayScale ViReal64 Global delay scale, should be retrieved with
Acqrs_getInstrumentInfo (…, “DelayScale”,
..) before power-off
If not known, use the value 5.0e-12
Return Value
Name Type Description
status ViStatus Refer to Table 2-1 for error codes.
Discussion
The normal startup sequence destroys the contents of the Acqiris digitizer memories. This function, together
with a specific sequence of other function calls, prevents this from occurring in digitizers with battery
backed-up memories.
Please refer to the Programmer’s Guide section 3.19, Readout of Battery Backed-up Memories, for a
detailed description of the required initialization sequence to read battery backed-up waveforms.
Programmer’s Reference Manual Page 177 of 210