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Chapter 3: Testing Performance
To test the threshold accuracy
Test the ECL Threshold
1
Set up the logic analyzer:
a
In the Analyzer Setup dialog, click the threshold field for Pod 1. The
Threshold Settings dialog appears.
b
In the Threshold Settings dialog, select Standard and ECL (–1.30 V).
c
Click OK to close the Threshold Settings dialog.
d
Click OK to close the Analyzer Setup dialog.
2
Test the high-to-low transition:
a
On the DC source, enter a voltage setting of –1.384 V.
b
On the logic analyzer, click the
Run icon. The display should show all
channels at a logic "0".
3
Test the low-to-high transition:
a
On the DC source, enter a voltage setting of –1.216 V.
b
On the logic analyzer, click the
Run icon. The display should show all
channels at a logic "1" (0x1FFFF).
4
Record a PASS/FAIL in the performance test record for Threshold
Accuracy Pod 1 - ECL.
Summary of Contents for 1680 series
Page 13: ...13 Chapter 1 General Information Dimensions 1680A AD Series 1690A AD Series...
Page 74: ...74 Chapter 3 Testing Performance Performance Test Record...
Page 142: ...142 Chapter 6 Replacing Assemblies 1690A AD series disassembly assembly...
Page 172: ...172 Chapter 8 Theory of Operation Self Tests Descriptions...
Page 174: ......
