6022be horizontal scale

Dmitry

Hello,
I have the oscilloscope 6022be and have some problems with horizontal scale.
I see on the control panel I can install time/div up to 5000 sec but if I install even 1 sec/div I can not to see signal in the real time.
For example I need to check throttle position sensor on my car. The voltage's range of the sensor is 0,5 ... 4,5V.
I install horizontal scale as 1 sec/div and so I suppose I can see signal during about 10 sec. But in reality there is delay in the process of signal measuring and I can not analyze signal at all.
Question
Is it normal that horizontal scale does not work if to choose scale above than 50 msec/div?
How to solve such problem?

Thanks in advance,
Regards,
Dmitry

Dmitry

Thank you very much for your answer.
How to increase the buffer size?
For example I need to check impulses during 20 sec to compare first and last of those impulses.

Thanks in advance,
Regards,
Dmitry