Specifications

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Chapter 1: Agilent Technologies 16700A/B-Series Logic Analysis System
Starting Measurements from External Triggers
Starting Measurements from External Triggers
Both the Port In and Port Out controls are accessed from either the
main System window, or from the Intermodule window. The following
examples access Port In and Port Out from the Intermodule window.
Using the Port In
Signal
The logic analysis frame can automatically start a measurement using a
signal from an external instrument or system. The arming pulse is
connected to the PORT IN BNC on the rear panel of the logic analysis
frame.
Port In Characteristics
The signal from the external instrument must have the following
characteristics.
Input Resistance = 4 kOhms
Levels = TTL, ECL, or User Defined from -4.0 V at 1.5 mA to +5 V at 1.6 mA
Input Voltage = -6 V at 1.5 mA to +6 V at 1.6 mA
Starting Measurements from External Triggers
1. Connect the arming pulse from the external instrument to the PORT IN
BNC connector on the analysis frame.
2. From the Intermodule window, select Port In.
3. Set the Port In voltage level and edge to match the arm signal from the
external instrument. You can set the analysis frame to match a TTL, ECL,
or user-defined level.
4. Select the large Group Run button and choose Group Run armed from
Port In.
5. Start the external instrument or system.
When the external instrument sends a pulse to the PORT IN BNC, the
Instrument tool(s) that are directly beneath the Group Run are armed
and begin searching for their respective trigger conditions.