Note:
All CX instruments measure the peak levels for analog carriers because the average power changes
depending on the picture content e.g. dark scenes have a higher average power than bright scenes. Using the
sync pulses, the carrier is at its peak power and it does not change from scene to scene therefore peak power
has become the standard for analog video carrier level measurements.
When testing a digital channel, the unit first tries to achieve digital lock. Once achieved, the unit displays the related digital
measurements as well as the constellation diagram. If the unit is unable to lock onto the digital channel, a warning message is
displayed. The unit will then switch back to the SLM measurement mode for this specific channel indicating signal level - the CX
measures the average power for digital carriers.
CX100/110/120/150/180 series e-Manual D07-00-002 Rev B01
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