Multiple Pulse Generator And Scope Connections - Keithley 4200-SCS Reference Manual

Section 11: Pulse Source-Measure Concepts

Multiple pulse generator and scope connections

Up to three pulse generator cards can be used in a test system.
scheme using three pulse generator cards and a scope card. This example provides pulse output
to the gate, drain and source terminals of a FET. Using multiple pulse generator cards allow
different pulse periods to be used for their respective pulse outputs. The two channels of the scope
are used to capture the waveforms of the voltage across the gate and drain of the FET (as
opposed to measuring the current through each DUT pin).
NOTE
Pulse output synchronization: The outputs of the three pulse generator cards can be
synchronized to start at the same time. In
are used to connect TRIGGER OUT of Model 4205-PG2-3 (making it the master PG2) to
TRIGGER IN of the three Model 4205-PG2s. When the trigger output of Model 4205-PG2-3 is
enabled (on), it will trigger itself and the other two Model 4205-PG2s to simultaneously start their
outputs. See
synchronization.
Pulse-measure synchronization: Waveform measurements by the scope card can be
synchronized to the pulse outputs of the pulse generator cards. This trigger synchronization is
achieved by connecting TRIGGER OUT of a pulse generator card to EXT TRIG of the scope card.
In Figure
card. See
synchronization.
11-42
The connection scheme in
channels. SMA cables can be used instead.
SMA cable to a scope input.
Pulse output synchronization
11-25, the TRIGGER OUT of Model 4205-PG2-3 is routed to EXT TRIG of the scope
Pulse-measure synchronization
Return to
Figure 11-25 uses BNC cables for the scope input
Figure 11-24
Figure 11-25, short SMA cables and SMA Tee adapters
earlier in this section for details on pulse output
earlier in this section for details on pulse-measure
Section Topics
Model 4200-SCS Reference Manual
Figure 11-25 shows a connection
shows how to connect an
4200-901-01 Rev. S / May 2017