Tektronix 013-0278-XX, Инструкция по эксплуатации, Страница: 22 / 32

Performance Verification
12
013-0278-00 Video Display Clamp
50
Ω
terminator
Video display clamp
Coaxial cable
Pulse
Generator
2.5X attenuator
Dual-input
coupler
Figure 9: Gain error test setup
3. Set the pulse generator as follows:
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 500 mV
H
Set the low level to --500 mV
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. Vertically position the channel 1 display to view the entire signal.
7.
Verify that the pulse amplitude is between 975 mV
p-p
and 1.025 V
p-p
(see
Figure 10).