KPCI-3101 — KPCI-3104 Series User’s Manual
shows an example of performing an enabled rate generation operation using an
external C/T clock source with an input frequency of 4kHz, a clock divider of 4, a low-to-high
pulse type, and a duty cycle of 75%. (The gate type does not matter for this example.) A 1kHz
square wave is the generated output.
shows the same example using a duty cycle of
25%.
Figure 2-16
Example of rate generation mode with a 75% duty cycle
Figure 2-17
Example of rate generation mode with a 25% duty cycle
One-Shot
Use one-shot mode to generate a single pulse output signal from the counter when the operation
is triggered (determined by the gate input signal). You can use this pulse output signal as an
external digital (TTL) trigger to start other operations, such as analog input or an external
instrument.
When the one-shot operation is triggered and a single pulse is output; then, the one-shot opera-
tion stops. All subsequent clock input signals and gate input signals are ignored.
Pulse
Output
Signal
75% duty cycle
Rate Generation
Operation Starts
External C/T
Clock
Input Signal
(4kHz)
Pulse
Output
Signal
25% duty cycle
Continuous Pulse
Output Operation Starts
External C/T
Clock
Input Signal
(4kHz)
Summary of Contents for KPCI-3101 Series
Page 10: ...iv...
Page 15: ...1 Overview...
Page 21: ...2 Principles of Operation...
Page 53: ...3 Installation and Configuration...
Page 78: ...3 26 Installation and Configuration KPCI 3101 KPCI 3104 Series User s Manual...
Page 79: ...4 Testing the Board...
Page 82: ...4 4 Testing the Board KPCI 3101 KPCI 3104 Series User s Manual...
Page 83: ...5 Calibration...
Page 86: ...5 4 Calibration KPCI 3101 KPCI 3104 Series User s Manual...
Page 87: ...6 Troubleshooting...
Page 94: ...6 8 Troubleshooting KPCI 3101 KPCI 3104 Series User s Manual...
Page 95: ...A Specifications...
Page 107: ...B Connector Pin Assignments...
Page 111: ...C Systematic Problem Isolation...
Page 145: ...This page intentionally left blank...
Page 146: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...