Tektronix TBS1102B User Manual

7. Turn the front-panel Level knob to adjust the trigger level to a voltage
midway between the open and closed voltages of the relay.
8. Push the Single button to start the acquisition.
When the relay opens, the oscilloscope triggers and captures the event.
Optimizing the acquisition
The initial acquisition shows the relay contact beginning to open at the trigger
point. This is followed by a large spike that indicates contact bounce and
inductance in the circuit. The inductance can cause contact arcing and premature
relay failure.
You can use the vertical, horizontal, and trigger controls to optimize the settings
before the next single-shot event is captured. When the next acquisition is
captured with the new settings (push the Single button again), you can see that
the contact bounces several times as it opens.
Application examples
40 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual

Tektronix TBS1102B Specifications

General

Bandwidth	100 MHz
Channels	2
Sample Rate	1 GS/s
Record Length	2.5 kpts
Vertical Sensitivity	2 mV/div to 5 V/div
Vertical Resolution	8 bits
Timebase Range	5 ns/div to 50 s/div
Display Type	TFT LCD
Display Resolution	480 x 234 pixels
Display	7-inch TFT LCD
Max Input Voltage	300 VRMS, CAT II
Trigger Types	Edge, Pulse, Video
Interfaces	USB 2.0
Power Supply	100-240 VAC, 50/60 Hz
Input Impedance	1 MΩ ±2%, 13 pF ±3 pF