Specifications

11-8
Performance Tests
Introduction
9. Press the AQUIRE key on the scope, set the number of samples to 1000 and then press
the START AQUIRING key on the scope (the acquisition progress can be observed at
the top right hand side of the scope display as an increasing percentage value).
10.Press RESULTS and note the histogram which has been plotted, locate The LOWER
DISTRB MARKER at the far left of this histogram and the UPPER DISTRB
MARKER at the far right of the histogram.
11.Read the DELTA T value from the bottom of the scope display. Enter this value of
DATA JITTER on the Calibration Data sheet.
Clock Risetime
1. Perform the Preliminary setup with the following exception: re-connect the cable
from channel 3 on the scope to the CLOCK OUT port on the pattern generator.
2. On the scope DELTA Volts menu, set MARKER 1 to the lower level of the signal
(midway into the noise band). Set MARKER 2 to the Hi level of the signal (midway
into the noise band).
3. Press Preset Level 0 to 100% on the scope. This will automatically move markers 1 and
2 to 10 and 90% levels.
4. Center a rising edge transition on the scope display and expand the timebase to
10 ps⁄ div.
5. On the scope DELTA T menu, set the START MARKER to the crossover of the V
marker on the 10% level of the rising edge (midway into the edge noise or jitter). Set
the STOP MARKER to the crossover of the V marker at the 90% level (midway into
the edge noise or jitter).
6. Read the DELTA T value from the bottom of the scope display. Enter this value of
CLOCK RISETIME on the Calibration Data sheet.
Clock Falltime
1. Perform the Preliminary setup with the following exception: re-connect the cable
from channel 3 on the scope to the CLOCK OUT port on the pattern generator.
2. On the scope DELTA Volts menu, set MARKER 1 to the lower level of the signal
(midway into the noise band). Set MARKER 2 to the Hi level of the signal (midway
into the noise band).
3. Press Preset Level 0 to 100% on the scope. This will automatically move markers 1 and
2 to 10 and 90% levels.
4. Center a rising edge transition on the scope display and expand the timebase to
10 ps⁄ div.
5. On the scope DELTA T menu, set the START MARKER to the crossover of the V
marker on the 10% level of the rising edge (midway into the edge noise or jitter). Set
the STOP MARKER to the crossover of the V marker at the 90% level (midway into
the edge noise or jitter).
6. Read the DELTA T value from the bottom of the scope display. Enter this value of
CLOCK FALLTIME on the Calibration Data sheet.