User's Manual

Chapter 2 Configuration and Installation
© National Instruments Corporation 2-15 Lab-NB User Manual
Mode 1 Output Timing
The following figure illustrates the timing specifications for an output transfer in mode 1.
WR*
OBF*
INTR
ACK*
DATA
T1
T2
T3
T4
T5
T6
Name Description Minimum Maximum
T1 WR* = 0 to INTR = 0 – 250
T2 WR* = 1 to output – 200
T3 WR* = 1 to OBF* = 0 – 150
T4 ACK* = 0 to OBF* = 1 – 150
T5 ACK* pulse width 100 –
T6 ACK* = 1 to INTR = 1 – 150
All timing values are in nanoseconds.