The 11683A option H01 modifies the 11683A to operate with either the internal DC reference source or an external programmable DC-reference source. The Agilent EPM E and P Series power meter service routines require the 11683A range calibrator equipped with option H01.
The Hewlett Packard Agilent Keysight 11683A range calibrator is specifically designed for use with the EPM, EPM-P series, E1416A and the discontinued 70100A and 43X power meters.. It allows verification of full-scale meter readings on all ranges, as well as meter tracking. Simply connect the cable between the power meter and calibrator. The CAL ADJ control on the power meter is used to set the meter to full scale on the 1 mW range.
HP / Agilent 11683A