Tektronix P6450, Инструкция по эксплуатации

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Operating Basics
Connect the Probe Connect the probes using the following steps. (See Figure 6.)
1. Align the silver screw on the probe to the silver side of the retention assembly.
Figure 6: Connecting the probes to the target system
2. Start both screws in the retention assembly, and tighten them evenly to ensure
that the probe approaches and mates squarely to the PCB. If access is limited,
use the adjustment tool that came with your probe. The probe is completely
fastened to the PCB when the screws stop in the assembly.
3. Verify that all of the channels are functional.
Troubleshooting Probe
Connections to the SUT
The most obvious symptom of a problem with the probe installation is seeing
incorrect data in the logic analyzer acquisition. However, the nature of the
incorrect data has a very consistent characteristic; the data from multiple channels
go to a logic low and stay there. Intermittent bad data, or a single dead channel
are not failures typically associated with probe installation problems.
1. Slightly move the probe head to either side, or press down on the probe head
while making new acquisitions. If good data is now being acquired, then the
probe mounting is most likely the cause.
2. If good data is not acquired, then remove the probe and check the retention
assembly for too much play. If there is signi
fi cant play, then the probe
mounting is most likely the cause.
P6450 High-Density Logic Analyzer Probe Instruction Manual 9