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The Digitizer Status Registers
This chapter describes the HP E1429 digitizer status system. Included is
information on the STATus subsystem commands, the status groups used by
the digitizer, the conditions monitored by each group, and information on
how to enable a condition to interrupt a computer.
The Status
Subsystem
Commands
The commands included in the STATus subsystem are:
STATus
:OPC
:INITiate <
state
>
:OPERation|QUEStionable
[:CONDition]?
:ENABle <
unmask
>
[:EVENt]?
:NTRansition <
unmask
>
:PTRansition <
unmask
>
:PRESet
Status System
Registers
Operating conditions within the digitizer are monitored by registers in
various status groups. The status groups implemented by the digitizer are:
• Questionable Signal Status Group
– condition register
– transition filter
– event register
– enable register
• Operation Status Group
– condition register
– transition filter
– event register
– enable register
• Standard Event Status Group
– standard event status register
– standard event status enable register
• Status Byte Status Group
– status byte register
– service request enable register
The relationship between the registers and filters in these groups is shown in
Figure 3-16.
Chapter 3 Understanding the HP E1429 Digitizer 165