TROUBLESHOOTING
If you obtain “strange” output waveforms, or unexpected values of t
RR
, keep these
points in mind:
1) The test jig output
must
be terminated with 50 Ohms. This is normally the input
impedance of the oscilloscope, or the oscilloscope / attenuator combination.
2) An attenuator may be required on the oscilloscope to avoid overdriving the
oscillscope input, especially for sampling oscilloscopes.
3) The coaxial cable connecting the test jig to the output module should normally be
as short as possible (60 cm or less).
4) If reflections are observed on the output waveform, increase the length of the
coaxial cable connecting the test jig to the output module so that the reflections
do not overlap with the reverse transient. This will probably not change the
measured value, but it will keep the two effects isolated (the reverse transient
and the reflections), for greater measurement confidence.
5) The test jig lid must be closed, or the pulser output will be disabled.
For technical support, contact
. Sample waveforms and digital
photos of your setup are always helpful!
49
Summary of Contents for AVR-EB2A-B
Page 44: ...The installed DUT is shown below 44 ...
Page 46: ...The installed DUT is shown below 46 ...
Page 48: ...It is still below 300 ps at 10 mA 10 mA as well 48 ...
Page 56: ...PCB 158R4 LOW VOLTAGE POWER SUPPLY ...
Page 65: ...TEST JIG WIRING AVX CA AXPOST ...
Page 67: ...TEST JIG WIRING AVX CA SOD123 QTKA ...
Page 69: ...TEST JIG WIRING AVX CA SOT23B ...
Page 70: ...CUSTOMIZED DAUGHTERBOARD AVX CA SOT23B ...
Page 71: ...PERFORMANCE CHECK SHEET 71 ...