Anritsu 682XXB User Manual
3-15
PULSE MODULATION
TEST: VIDEO
FEEDTHROUGH
TEST: VIDEO
FEEDTHROUGH
This pulse modulation test verifies that video feedthrough is within
specifications.
specifications.
Test Setup
Connect the equipment, shown in Figure 3-12, as
follows:
follows:
1. Connect the 682XXB/683XXB rear panel
PULSE
SYNC OUT
to the Oscilloscope Trigger Input.
2. On the Oscilloscope, select 50
W input impedance.
3. Connect the 682XXB/683XXB
RF OUTPUT
to the
Oscilloscope Vertical Input through a 450 MHz
Low Pass Filter.
Low Pass Filter.
682XXB/683XXB MM
3-43
PERFORMANCE
PULSE MODULATION TEST:
VERIFICATION
VIDEO FEEDTHROUGH
450 MHz
Low Pass Filter
(For Video Feedthrough
Measurement)
Low Pass Filter
(For Video Feedthrough
Measurement)
CH. 4 Trigger
Pulse
Sync
Out
Sync
Out
682XXB / 683XXB
CH. 1 Input
Oscilloscope
Figure 3-12.
Equipment Setup for Pulse Modulation Test: Video Feedthrough