Tektronix 013-0278-XX, Инструкция по эксплуатации

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Performance Verification
013-0278-00 Video Display Clamp
9
50
Ω
terminator
Video display clamp
Coaxial cable
Pulse
Generator
2.5X attenuator
Dual-input
coupler
Figure 6: Back porch test setup
3. Set the pulse generator as follows (viewed with channel 2):
H
Set the compliment to --
H
Adjust the period to 15 kHz
H
Adjust the pulse duration to 5 s
H
Set the high level to 1.0 volts
H
Set the low level to 0.75 volts
4. Set the Video Display Clamp as follows:
H
Polarity to -- (negative)
H
Filter to Off
5.
Set the test oscilloscope to display channel 1 (channel 2 off).
6. Verify that the positive portion of the pulse is within
±
14 mV of the ground
reference (see Figure 7).