Performance Veri
fi
cation Procedures
Threshold Accuracy
This procedure veri
fi
es the threshold voltage accuracy of the logic analyzer.
Equipment required
Precision voltage reference or a DC signal
generator and precision digital voltmeter
Threshold Accuracy test
fi
xture
Logic analyzer probe
Prerequisites
Warm-up time: 30 minutes
Test Equipment Setup
Connect a P6410, P6417, or P6418 probe from the logic analyzer to the voltage
source, using the Threshold Accuracy test
fi
xture. If the voltage source does not
have the required output accuracy, use a multimeter with the required accuracy to
verify the voltage output levels speci
fi
ed in the procedure.
TLA5000 Setup
To set up the logic analyzer for this test, you must de
fi
ne the characteristics of the
channel that you are testing, and then set the trigger parameters:
1.
Open the Setup window, and in the Probe Channel table, delete all the groups.
You will de
fi
ne new groups in the following steps.
2.
In the Group column, enter a name for the probe group that you are testing
(“Test” in the example).
a.
De
fi
ne the probe channels for the group that you are testing.
b.
Set the clocking to Internal, 2 ns.
c.
Set Acquire to Normal.
d.
Set the Memory Depth to 128 K or less.
Figure 2: De
fi
ning group parameters
TLA5000 Series Product Speci
fi
cations & Performance Veri
fi
cation
27
