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Page IV-34
120 DSP Operation Manual
Basic Signal Level Meter
120
HUM (OPTIONAL)
When activated in a 120 DSP, the HUM feature provides users with the ability to
measure the amplitude of the 50/60 Hz, 100/120 Hz, and low frequency interference
present on the video carrier of a single selected analog channel.
Select the
Hum
button from the
Display
pop-
up menu to
display a bar graph of the HUM
levels of the analog channel.
The following measurement results are
displayed with a pass/fail status for each
measurement that is included in the open limit
set:
• 60 Hz level value with bar graph
• 120 Hz level value with bar graph
• < 1 kHz (low frequency) level value with bar
graph
Содержание 120 DSP
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Страница 279: ...www trilithic com 120 DSP Basic Signal Level Meter Section V Appendix ...
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