Rigol ds1052e automatic capture

[flyingfrancisco]

Hello everyone
I have the rigol S1052E and I would like to caputre clock and data bits from as PS2 keyboard. I have followed the instructions in the manual to capture a single event.Chosen the trigger channel ,single event, falling egde and set the trigger to 2 volts press RUN/START light turns red ,press on letter A of keyboard and nothing happens on scope. I can capture the image if I press on Start/Stop and at the same time I press on the letter but there must be a way to capture it automaticly. What am I missing?
Thx in advance

[vl400]

Start/Stop should be green while waiting for a trigger - it also flashes in the top left 'wait' if I remember correctly. Red Start/Stop means its stopped and wont be triggering, will say 'stop' in the top left corner too I think.

[flyingfrancisco]

Thx for your reply.I was misunderstanding the instructions. Works great once I applied your response!
Greetings from Green Valley, Ontario, Canada