Testing Threshold Accuracy - HP 54645A User's And Service Manual

Testing Threshold Accuracy

Testing the threshold accuracy verifies the data channel threshold
accuracy specification. You should perform this test every 24 months
or 4000 hours of operation, whichever comes first.
These instructions include detailed steps for testing the threshold
settings of digital channels D0-D7. After testing digital channels
D0-D7, connect and test digital channels D8-D15. Use the detailed
steps for digital channels D0-D7, substituting digital channels D8-D15
for digital channels D0-D7 in the instructions.
Each threshold test tells you to record the voltage reading in the
Performance Test Record located at the end of this chapter. To check
if each test passed, verify that the voltage reading you record is within
the limits listed on the Performance Test Record.
Table 7-2 Equipment Required
Equipment
Digital Multimeter
Function Generator
BNC-Banana Cable
BNC Tee
BNC Cable
BNC Test Connector, 8-by-2
7-12
Instructions for HP 54645D
These instructions apply only to the HP 54645D Mixed-Signal Oscilloscope.
Critical Specifications
0.1 mV resolution, 0.005%
accuracy
DC offset voltage 6.3 V
Recommended Model/Part
HP 34401A
HP 3325B Option 002
HP 11001-60001
HP 1250-0781
HP 10503A