7000-series remote control connector

The remote control connector on the rear of the 7904 (connector J90) and 7503/7503 scopes (connector J1075) is an Amphenol 165-16 socket.

Pin	Function	Notes
A	Single sweep reset	Close to ground within 0.5 V, 10 mA max, minimum 10 μs pulse width
B	Ground
C	A Remote ready	+5 V via 47 Ω when active, can drive #49 bulb
D	B Remote ready (*)	+5 V via 47 Ω when active, can drive #49 bulb
E	Remote readout lock-out (**)	Close to ground within 0.1 V, 2 mA max, 2 V open voltage
F	Remote single-shot lock-out (**)	Closure to ground within 0.4 V, pin E was grounded before, rate of change ≥ 0.1 V/μs, 3 mA max, 10 V open voltage
H	n/c
J	n/c
K	n/c

(*) not in 7503

(**) only in 7904