Hi all, I have a device that accepts TTL input to turn it on/off, but it is designed to assume 'on' if you have no input. To do this it has an internal 5V source with a 50 Ohm pull-up resistor, so that if you plug in a BNC cable (the 'gate drive') with no voltage the device will switch off. BUT to do this the device specifies that "the gate drive must be capable of sinking 100 mA to gate the module off (5V/50Ω)". My BNC cable with TTL high/low can't do this, and I assume there must be a simple solution here... any ideas?