Hi was wondering if someone could help, when using the 1volt square wave calibration on the Hp1741a oscilliscope, the manual states you should get a square wave 5 graticules long. Mine is six graticules long and the end of it slighlty curves.
I have tried ajusting the trace alignment but that dies not change the length or the curve of the signal any ideas?
A picture would help, as would a specification for the probe you are using.
Is the curve there if the input is grounded? If so then the problem is in the deflection circuits.
The trace alignment is irrelevant to the probe calibration, and to any curve on the waveform.
I wouldn't worry about the 5-vs-6 time difference, since that signal's frequency is not critical. Use a known frequency (probably crystal controlled) to calibrate each timebase setting according to the manual.
I wouldn't expect the amplitude to be exactly 1V. All that matters is that it has a sharp edge.
Ensure the scope's input capacitance is within the range specified for the probe, then adjust the probe to remove undershoot/overshoot on the waveform edges.