The data sheet for the 5500A/Coil has specifications at DC, 65Hz and 400Hz. The Fluke ISO17025 Accredited Cal certificate we provide to customer only has test points at 50Hz and 400Hz.
What are the calibration requirements and why does Fluke not calibrate the coil only on AC not DC?
Please see Fluke's official position statement on the traceability of coils.
Memo on the traceability, calibration, and recalibration requirements for Fluke coils