Filter
Top Products
Performance Tests
2-42
TDS5000B Series Specifications and Performance Verification
This procedure checks the sample rate portion of the Delta Time Measurement
Accuracy as listed in the Specifications section. The previous procedure, Check
Long-Term Sample Rate and Delay Time Accuracy, on page 2--39, verified the
“PPM” portion of the delta time specification.
1. Install the test hookup and preset the instrument controls:
a. Initialize the oscilloscope: Press the DEFAULT SETUP button.
b. Hook up the pulse generator as shown in Figure 2--18.
TDS5000B Series oscilloscope
Pulse
generator
50 Ωcable
Output
20I 50 Ωcable
20I 50 Ωcable
SMA male
to male
SMA
short
SMA male
to male
SMA
short
BNC T
connector
2X attenuator
BNC 90°female
to male adapter
SMA T
connector
BNC to SMA
adapter
Figure 2- 18: Delta time accuracy test hookup
H Set the pulse generator output for a positive-going pulse with a
280 ps -- 800 ps rise-time, as shown in Table 2--4 on page 2--44, and
for the fastest possible rep rate (at least 1 kHz).
H Set the pulse generator output for about 500 mV. (This amplitude
can be adjusted later to get a 5-division pulse on the screen.)
c. Modify the initialized front-panel control settings:
H From the toolbar, click the Vert button. Set the termination of the
channel to 50 Ω by selecting the channel tab and clicking the
Termination 50 Ω button.
H Press AUTOSET. You may see both positive and negative pulses.
Adjust the Trigger LEVEL knob so that the trigger level is about
50% of the rising edge of the positive pulse.