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Performance Verification
The procedure in this section measures the accuracy of the current probe.
Table 7
Required Test Equipment
Description
Probe Power Supply
Digital Multimeter (DMM)
Signal Generator
Adapter
Test Coil
Test Coils
Depending on your current probe, construct a coil using transformer wire with the
following number of turns. The coil should be about 4 inches (10 cm) in diameter.
N2780/1/2/3B User's Guide
Critical Specifications
No substitute
AC/DC voltage and current measurement accuracy
better than ±0.1% of reading at 10 mA
Input resistance in AC/DC voltage mode ¡1 MΩ
DC to 66 Hz sine waves able to generate more than 10A
in the test coil (e.g. an inductive load).
BNC (f) to dual stacking banana plug
5, 50, or 77 turns. (See coil construction instructions in
this section.)
N2780B; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 turns
N2781B; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 turns
N2782B; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 turns
N2783B; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 turns
Performance Verification
Recommended
Keysight N2779A
Keysight 34401A
Keysight 6813B
Pomona 1269
16-AWG 155C CU round magnetic
wire (NEMA MW 35-C); Red enamel
(transformer wire)
43
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