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Chapter 1
Hardware Descriptions
Agilent E1450 Timing Module Description
The Agilent E1450 160 MHz Timing Module is a two-slot, C-size VXIbus register-based module
containing a timebase, timing generators, trigger circuits, wait-for-condition circuit, end-if-ready circuits,
marker circuits, and sequencer. These circuits supply cycle-by-cycle timing and control information to the
Pattern I/O Modules and the device under test. These circuit elements are shown in the block diagram
on the following page.
The E1450 provides control signals for the DUT (Device Under Test) and timing for the sequence of
patterns that are generated or measured by the E1451/E1452 Pattern I/O modules. The Timing Module
can be externally synchronized with external triggers from the DUT or other instrumentation. Triggers
can be received from the VXIbus backplane, front panel SMB connectors, or the DUT. Ten qualifier
input lines ("Q" lines) and three expression evaluators permit the system to wait for conditions (Boolean
Figure 1-1. Agilent E1450 Timing Module
Hardware Descriptions 1-1
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