HP VXI E1432A manual Arm and Trigger, Valid trigger conditions are

HP E1432A User's Guide

Using the HP E1432A

Arm and Trigger

This section explains some terminology relating the the “Arm” and “Trigger” steps in the measurement loop. As an example a measurement might be set up to arm at a certain RPM level and then subsequently trigger at an external event corresponding to top dead center (TDC). The settings would be:

￿	Arm:	RPM Step Arm
￿	Trigger:	External Trigger

If you want to begin a throughput session at this same RPM/TDC event, then the first external trigger after a specified RPM would start a continuous mode measurement. Now (using overlap block mode) the settings would be:

￿ Pre-Arm:	RPM Step Arm
￿ Arm:	Auto
￿ Trigger:	Auto

In the measurement loop, an arm must take place before a trigger. You can program how many triggers to do before waiting for another arm condition. The default is one trigger for each arm. For each trigger, a block of data is sent to the host.

The first arm in a measurement is the pre-arm. By default, the pre-arm condition is the same as the regular arm conditions.

Valid Arm (and Pre-Arm) conditions are:

￿Auto Arm

￿Manual Arm

￿RPM Step Arm

Valid trigger conditions are:

￿Auto Trigger

￿Input Trigger

￿Source Trigger

￿External Trigger

￿Manual Trigger

￿Tachometer Edge Trigger

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