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Chapter 8, Signaling Decoder Screen
Tone Sequence Decoder
Freq
Freq Error
Gate Time
Input Level
282
This measurement column lists the tone frequency for each symbol received in the
tone sequence.
This measurement column lists the frequency difference between the tone
frequency specified for each symbol in the Tone Sequence Encoder screen and the
frequency measured for each symbol in the Tone Sequence Decoder screen.
Operating Considerations
The decoder and encoder
choose in either field is automatically selected for the other.
This field specifies how long the decoder analyzes a signal after it has been
triggered.
This field specifies a tone's "on" signal level that you input (after de-emphasis if
used). The higher the level of signal expected by the analyzer, the higher the
trigger level is set.
Operating Considerations
The unit-of-measure is determined by the
The input level should be set high enough to prevent false triggering, but low
enough to allow triggering for every desired tone received.
If de-emphasis is used (by setting the AF Analyzer's
), the
750
s
Input Level
level. For example, a 1 kHz, 1 Vpeak sinewave into the AF Analyzer input
requires an
Input Level
See Also
Trig Level field description, on page 283
fields are interactive. The standard you
Standard
AF Anl In
should be set to about 1/5 of the measured signal's
of approximately 0.212 V to trigger correctly.
setting.
field to
De-Emphasis
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