User`s guide

20 • Registers
4.2 Internal Timer/Counter Register
The 9116 series card basically has 6 counters, which are responsible for the
scan timing of the analog input data acquisition. The 6 counters occupy 6 I/O
address locations in the 9116 card as shown below.
Address: BASE + 0 ~ BASE + 14
Attribute: read / write
Data Format:
Base + 0x00 Scan Interval Counter Register (R/W) 24bit
Base + 0x04 Sample Interval Counter Register (R/W) 16bit
Base + 0x08 Scan Counter Register (R/W) 24bit
Base + 0x0C DIV Counter Register (R/W) 9bit
Base + 0x10 Delay1 Counter Register (R/W) 16bit
Base + 0x14 M Counter Register (R/W) 16bit
Table 3. Timer/Counter Register Address
SI_counter: Scan Interval counter
SI2_counter: Sample Interval counter
SC_counter: total Scan Count counter
DIV_counter: specify the number of samples per scan
DLY1_counter: Delay Interval counter (only used in delay trigger
mode)
M_counter: specify the number of scans before a trigger (only
used in pre-trigger and middle-trigger modes)