Selecting Polarity Of External Trigger Input Signal; Procedure - Agilent Technologies E4991A Operation Manual

Setting Measurement Conditions

Selecting Polarity of External Trigger Input Signal

Selecting Polarity of External Trigger Input Signal
You can select the polarity for trigger signal detection by the external trigger input
connector on the rear panel by following the procedure below.

Procedure

Step 1. Right-click to open the shortcut menu and click
Step 2. Click the
Trigger Polarity
Button
Trigger Polarity
Positive
Negative
64
Trigger Setup
Button and select the external trigger signal polarity.
External Trigger Signal Polarity
Positive polarity (detects increasing TTL signal
and triggers).
Negative polarity (detects decreasing TTL signal
and triggers).
(or press ).
Chapter 3