Agilent Technologies Infinium DCA 86100A, Руководство по обслуживанию

Страница: 88 / 268

4-38
Performance Verification
Trigger Jitter Test, Option 001
Software
1 Prompt the user to make the proper connections. The current connections are listed below:
a “DUT Channel 2" to the channel 2 input of the DUT.
b “DUT front trigger” to the front panel trigger input of the DUT.
2 Set the RF switching for the following:
a RF source to DUT channel 2.
b RF source to DUT front trigger.
3 Set the DUT for the following:
a Execute a default setup.
b Turn off all channels except for channel 2.
c Trigger source to front panel.
4 For each data point do the following:
5 Set the DUT to 100 mV/div, (0.5 / frequency) ps/div and delay listed in Table 4-8 .
6 Set the 83712B to the new frequency.
7 Adjust the 83712B until required input voltage is read on channel 2. Use a binary search to achieve
this result to within ± 2 mV.
8 Set the trigger mode as required.
9 Use the Tvolt command to find the delay of the 2nd rising edge at 0 V currently on the screen.
10 Set the DUT to listed vertical and horizontal scale settings.
11 Set the DUT to the delay setting from Step 9 .
12 Setup the Histogram window to measure the RMS jitter in the center of the screen. Refer to the
histogram window information above.
13 Push the stop button, then the clear screen button, followed by the run button.
14 Let the DUT collect histogram data until there are 1000 or more hits.
15 After the 1000 hits have been collected then read the histograms standard deviation (this is the
RMS jitter reading).
16 Repeat Step 4 for each parameter in the specifications above.
17 Compare each parameter with the specifications above.
18 All measured parameters must be within specifications for the test to be a pass.
Data Storage
• Frequency
• Horizontal Delay
• RMS Jitter
• Max Test Limits
• Date and time the test was completed