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Note The digitizer’s servant area switches are not used and should be left in their
factory-set (0) position.
The Digitizer Bus
Request Level
The bus request level is a priority at which the HP E1429A/B digitizer can
request the use of the VME (VXI Data Transfer) Bus.
Bus Request Level
Guidelines
• There are four bus request lines (BG0 - BG3) from which one is
selected (Figure 1-2). Bus request line 3 has the highest priority, bus
request line 0 has the lowest priority. It is not necessary to change
the bus request level setting (BG3) on the digitizer.
• More information on the Data Transfer Bus can be found in the
C-Size VXIbus Systems “Installation and Getting Started Guide”.
Installing the
Digitizer
The HP E1429A/B digitizer can be installed in any mainframe slot except
slot 0. However, in applications where the HP E1429B is generating data
over the Local bus, install the digitizer in the left slot adjacent to the
module(s) receiving the data. Figure 1-3 shows the installation of a sample
Local bus configuration.
Figure 1-3. Installing the HP E1429B Digitizer in a Local Bus Configuration
18 Gettin
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Started Chapter 1