DAQ DAQCard-1200, User Manual

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Chapter 3 Connecting the Signals
© National Instruments Corporation 3-21 DAQCard-1200 User Manual
Figure 3-11. Mode 2 Timing Specifications for Bidirectional Transfers
Name Description Minimum Maximum
T1 WRT* = 1 to OBF* = 0 — 150
T2 Data before STB* = 1 20 —
T3 STB* pulse width 100 —
T4 STB* = 0 to IBF = 1 — 150
T5 Data after STB* = 1 50 —
T6 ACK* = 0 to OBF = 1 — 150
T7 ACK* pulse width 100 —
T8 ACK* = 0 to output — 150
T9 ACK* = 1 to output float 20 250
T10 RD* = 1 to IBF = 0 — 150
All timing values are in nanoseconds.
T1
T6
T7
T3
T4
T2 T5 T8 T9
WRT *
OBF *
INTR
ACK *
STB *
IBF
RD *
DATA
T10