National Instruments Low-Cost Multifunction I/O Board for ISA Lab-PC+ - Manual (Page 50)

Chapter 3 Signal Connections
© National Instruments Corporation 3-19 Lab-PC+ User Manual
Mode 1 Output Timing
The timing specifications for an output transfer in Mode 1 are as follows:
WR*
OBF*
INTR
ACK*
DATA
T1
T2
T3
T4
T5
T6
Name Description Minimum Maximum
T1 WR* = 0 to INTR = 0 – 450
T2 WR* = 1 to output – 350
T3 WR* = 1 to OBF* = 0 – 650
T4 ACK* = 0 to OBF* = 1 – 350
T5 ACK* pulse width 300 –
T6 ACK* = 1 to INTR = 1 – 350
All timing values are in nanoseconds.