Tektronix TBS1052B User Manual

Analyzing a differential communication signal
You are having intermittent problems with a serial data communication link, and
you suspect poor signal quality. Set up the oscilloscope to show you a snapshot
of the serial data stream so you can verify the signal levels and transition times.
Because this is a differential signal, you use the Math function of the oscilloscope
to view a better representation of the waveform.
NOTE. Be sure to first compensate both probes. Differences in probe
compensation appear as errors in the differential signal.
To activate the differential signals connected to channel 1 and to channel 2,
follow these steps:
1. Push the 1 (channel 1 menu) button and set the Probe ► Voltage ►
Attenuation option to 10X.
2. Push the 2 (channel 2 menu) button and set the Probe ► Voltage ►
Attenuation option to 10X.
3. If using P2220 probes, set their switches to 10X.
4. Push the Autoset button.
Application examples
TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 47

Tektronix TBS1052B Specifications

General

Bandwidth	50 MHz
Channels	2
Sample Rate	1 GS/s
Vertical Resolution	8 bits
Vertical Sensitivity	2 mV/div to 5 V/div
Timebase Range	5 ns/div to 50 s/div
Interfaces	USB 2.0
Record Length	2.5 kpts
Display	7-inch WVGA (800 x 480)
Trigger Types	Edge, Pulse Width
Display Type	Color LCD
Display Resolution	800 x 480
Input Impedance	1 MΩ
Power Supply	100 to 240 V