Option 001 – FM Deviation, 0 to 110 kHz. AM 0 to 30%

Option 002 – FM Deviation  0 to 30 kHz. AM 0 to 30%

Option 003 – Reduces the external FM sensitivity to 100 kHz/volt+/1 5%, high range and 10 kHz/volt +/- 5%, low range

Option 004 – Adds rear panel auxiliary output in parallel with standard front panel auxiliary output.

Option 005 – Modifies 8601A to provide a 400 Hz internal modulation frequency rate.

Option 006 – Modifies the 8601A to provide a 22.5 kHz peak interl FM deviation, high range and 2.25 kHz peak deviation, low range.

Option 007 – Enables the 8601A to be used as a tracking generator by substituting an external signal for the 8601A VTO (Internal Voltage Tuned Oscillator) signal.

Option 008 – Change the output meter, attenuator assembly, RF output cable and connector to BNC.

Option 009 – Change the output meter, attenuator assembly, RF output cable and connector to TNC.

Option 010 – Change the output meter, attenuator assembly, RF output cable and connector to Western Electric type.

Hewlett-Packard Operating and Service Manual  HP Part No. 08601-90017