When first booting a Spectra IV, the edges of straight lines are jagged, most noticeable when using PTZ.
Spectra IV; all versions.
Depending on the backend equipment used, the video needs to align to either the odd or even field (most notable in digital systems). By default, this setting is set to "OFF".
Try setting the interlace scan to even or odd progressive scan, this is called " frame scan" in the menu on older version cameras and called "field align" on the newer camera versions.. This gives you the even or odd option for the progressive scan.