Video Feedthrough

M9484C with option PMR or PME

This test measures the pulse video feedthrough voltage during RF pulse modulation. Video feedthrough is a measure of the DC and low-frequency components of the pulse envelope.

To measure video feedthrough, a pulse envelope is displayed on the oscilloscope. For frequencies below 800 MHz, the video feedthrough is calculated from (max voltage + min voltage)/2. For frequencies above 800 MHz, the pulse envelope is passed through a digital low-pass filter and the video feedthrough equals the peak-peak voltage of the resulting signal.

Required Test Equipment

Test Equipment	Recommended Model	Alternate Model
High performance oscilloscope	DSOZ634A1 Can only be connected via LAN. Refer to the Connecting LAN Test Instruments section of the Getting Started topic.	Click herefor a list of alternate oscilloscope models:   Select any oscilloscope frequency option that has a maximum frequency greater than or equal to the maximum frequency of the unit under test. DSAX92004A DSAX92504A DSAX92804A DSAX93204A DSOX92004A DSOX92504A DSOX92804A DSOX93204A MSOX92004A MSOX92504A MSOX92804A MSOX93204A DSAV204A1 DSAV254A1 DSAV334A1 DSOV204A1 DSOV254A1 DSOV334A1 DSAZ204A1 DSAZ254A1 DSAZ334A1 DSAZ504A1 DSAZ634A1 DSOZ204A1 DSOZ254A1 DSOZ334A1 DSOZ504A1 The Infiniium V-series and Z-series oscilloscopes can only be connected via LAN. Refer to the Connecting LAN Test Instruments section of the Getting Started topic.

Connection Setups

Measurement setup
For 1 and 2 channel M9484C

Uses Event 2 port.

Measurement setup
For 4-channel M9484C

Uses Event 1 port.