Kabel power sensor

Marconi			HP

G	Chopper coax	G
H	Chopper coax	H

L	Signal		C
C	Feedback	D

D	Zero
M	Head select

A	ground
E	ground		E
F	ground
J	ground
K	ground

	Select 1	K
	Select 2	A

	Guard		F
	Guard		J
	Guard		M