HP E1429A manual Understanding the HP E1429 Digitizer Chapter

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 +4316) 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.

Figure 3-13. Monitoring the Partition Window During Segmented Reading Transfers

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 +4316) is faster than using SCPI commands to monitor condition register bit 9.

Bit 4 of the traffic register (base +0216) is monitored so that post measurement readings, either segmented or non-segmented, can be transferred immediately once all of the readings are available.

154 Understanding the HP E1429 Digitizer Chapter 3