138 U1253B User’s and Service Guide
6 Performance Tests and Calibration
Recommended Test Equipment
The test equipment recommended for the performance
verification and adjustment procedures is listed below. If the
exact instrument is not available, substitute with another
calibration standard of equivalent accuracy.
Table 6- 1 Recommended test equipment
Application
Recommended
equipment
Recommended accuracy
requirements
DC voltage Fluke 5520A < 20% of U1253B accuracy spec
DC current Fluke 5520A < 20% of U1253B accuracy spec
Resistance Fluke 5520A < 20% of U1253B accuracy spec
AC voltage Fluke 5520A < 20% of U1253B accuracy spec
AC current Fluke 5520A < 20% of U1253B accuracy spec
Frequency Agilent 33250A < 20% of U1253B accuracy spec
Capacitance Fluke 5520A < 20% of U1253B accuracy spec
Duty cycle Fluke 5520A < 20% of U1253B accuracy spec
Nanosiemens Fluke 5520A < 20% of U1253B accuracy spec
Diode Fluke 5520A < 20% of U1253B accuracy spec
Frequency
counter
Agilent 33250A < 20% of U1253B accuracy spec
Temperature Fluke 5520A < 20% of U1253B accuracy spec
Square wave Agilent 53131A and
Agilent 34401A
< 20% of U1253B accuracy spec
Short Shorting plug - dual
banana plug with
copper wire shorting
the 2 terminals
< 20% of U1253B accuracy spec
Battery level Fluke 5520A < 20% of U1253B accuracy spec