Measuring Waveforms
3–152
TDS 500D, TDS 600B, & TDS 700D User Manual
Hit counts greater than or equal to the Pass/Fail Failure Threshold are a test
failure. To set the threshold, press MEASURE ➞ Measure (main) ➞ Masks
(pop-up) ➞ Mask Counting (main) ➞ Pass/Fail Failure Threshold (side).
Then use the general purpose knob or keypad to set the failure threshold.
The test continues until the minimum number of waveforms has been acquired.
To set the minimum number of waveforms, press MEASURE ➞ Mea-
sure (main) ➞ Masks (pop-up) ➞ Mask Counting (main) ➞ Set Minimum
Number of Waveforms (side). Then use the general purpose knob or keypad to
set the number of waveforms.
The Pass/Fail Bell menu controls whether the mask pass/fail test rings a bell. To
control the Pass/Fail Bell, press MEASURE ➞ Measure (main) ➞ Masks
(pop-up) ➞ Mask Counting (main). Then toggle Pass/Fail Bell (side) to Off,
On Failed, or On Completion.
Off does not ring a bell
On Completion rings the bell when the test is complete
On Failed rings the bell when a failure is detected and when the test is
complete
Use the HORIZONTAL POSITION control or the Time Base Position menu to
manually align the waveform to a mask. Adjusting the HORIZONTAL POSI-
TION resets mask counting.
Use Mask Margins to determine if your signal passes with a specific margin. To
set a mask margin do the following steps:
1. To enable mask margins, press MEASURE ➞ Measure (main) ➞ Masks
(pop-up) ➞ Mask Margins (main). Then toggle Mask Margins (side) to
On or Off. If a user defined mask has more than three masks, turning on
mask margins will generate an error. Turning Mask Margins off will set the
Margin Percentage to 0%.
Set the Failure Threshold
Set the Minimum Number
of Waveforms
Ringing the Bell
Adjusting the Horizontal
Position
Setting Mask Margins
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