SIS Documentation
SIS3820
VME Scaler
Page 33 of 79
7.15 HISCAL_START_PRESET register (0x40)
#define SIS3820_HISCAL_START_PRESET 0x40 /* read/write; D32 */
The number of scans in HISCAL operation can be preset/limited with this 32-bit deep
register. The An entry of 0 (power up default) results in scanning operation until a KEY reset
or KEY HISCAL_OPERATION_DISABLE command is issued.
7.16 HISCAL_START_COUNTER register (0x44)
#define SIS3820_HISCAL_START_COUNTER 0x44 /* read only; D32 */
This 32-bit deep register holds the number of scans/starts in HISCAL operation. The register
content is updated with the start signal/pulse.
7.17 HISCAL_LAST_ACQ_COUNTER register (0x48)
#define SIS3820_LAST_ACQ_COUNTER 0x48 /* read only; D32 */
This 32-bit deep register holds the number of bins of the last scan (i.e. the contents of the
acquisition count register at the end of the scan). It is updated with the start in HISCAL
operation.