Keithley 4200-SCS Reference Manual page 900

Semiconductor characterization system

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Section 11: Pulse Source-Measure Concepts

Scope card ext trig

For pulse-measure synchronization, the scope must be set for the normal sweep mode, and set to

be triggered by the leading-edge or falling edge trigger from the 4205-PG2 pulse generator. Refer

to the ZTEC scope User's Manual for details on triggering. Triggers from the pulse generator are to

be applied to the EXT TRIG connector of the scope card.

Trigger connections: pulse-measure

scope card. The SMA cable and adapter for the scope card are supplied items.

Figure 11-16

Trigger connections for pulse-measure synchronization

Example LPT function sequence: pulse-measure synchronization

The following LPT function sequence uses the software trigger to initiate a 3-pulse burst for

CHANNEL 1. The three output pulses will trigger the scope to perform three measurements. It

assumes the scope is configured to trigger on leading edge triggers from the pulse generator:

// Stop pulse generator output:

pulse_halt(VPU1);

// Turn off trigger output:

pulse_trig_output(VPU1, 0);

// Set the output trigger polarity to positive:

pulse_trig_polarity(VPU1, 1);

// Select Software trigger source:

pulse_trig_source(VPU1, 0);

// Set channel 1 for a burst count of 3:

pulse_burst_count(VPU1, 1, 3);

// Turn channel 1 on:

pulse_output(VPU1, 1, 1);

11-16, TRIGGER OUT of the pulse generator card is connected to Trg Ext of the

or 4200-SCP2

Pulse Generator

White SMA Cable

(male-to-male)

= SMB Male to SMA Female Adapter

Section Topics

Model 4200-SCS Reference Manual

4200-901-01 Rev. S / May 2017

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