Signaling Encoder and Decoder - Screens and Control Fields

Control Fields for the Signaling Encoder and Decoder

Frequency

This measurement displays the decoded signal’s frequency.

Screens Where Field is Present

SIGNALING DECODER (Modes: Func Gen)

Gate Time

This field specifies how long the decoder analyzes a signal after it has been triggered. Up to 65 seconds of gate time can be specified. The gate time should be set long enough to allow the preamble and all necessary data bits to be captured.

Operating Considerations

If the gate time is too long, the decoder’s data buffer becomes full. A message is displayed instructing you to decrease the gate time.

This function is not used with the NAMPS-NTACS RVC decoder.

Screens Where Field is Present

SIGNALING DECODER (All Modes)

Hi Tone

This for the high frequency tone in each tone pair. The measurement type is selected by selecting the Freq field to display a list of measurement choices.

Operating Considerations

Frequency error is calculated by comparing the DTMF encoder’s frequency settings for each tone pair with the decoded frequencies.

Screens Where Field is Present

SIGNALING DECODER (Modes: DTMF)

Chapter 8

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Agilent Technologies 8935 series e6380a manual Frequency, Gate Time, Hi Tone