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To transfer segmented readings, the data register is accessed until each
reading (pre- and post-arm) in the segment is transferred. After the last
reading is transferred, bit 1 of the arm status register (base +43
16)
or
bit 9 of the condition register is monitored for a low to high transition.
When the bit is high (’1’), the next segment can be transferred.
Note It is only necessary to monitor the partition window bit when the digitizer
readings are segmented and the data register is accessed at speeds available
through an embedded controller. Also, monitoring bit 1 of the arm status
register (base +43
16)
is faster than using SCPI commands to monitor
condition register bit 9.
Bit 4 of the traffic register (base +02
16
) is monitored so that post
measurement readings, either segmented or non-segmented, can be
transferred immediately once all of the readings are available.
Figure 3-13. Monitoring the Partition Window During Segmented Reading Transfers
154 Understanding the HP E1429 Digitizer Chapter 3