Agilent Technologies 8935 series e6380a manual Pre-Emp, Recc Data hex, SAT Freq FVC, SAT Level FVC

Signaling Encoder and Decoder - Screens and Control Fields

Control Fields for the Signaling Encoder and Decoder

Pre-Emp

This field determines whether the encoder’s signal passes through or bypasses the 750 ms pre-emphasis network. Pre-emphasis may be required when testing some FM receivers.

Pre-emphasis, when used, attenuates the lower frequency tone (1200 Hz at 1200 bps) to 2/3 of the AF Gen2 To field level setting.

See Also

“Twist” on page 279

Screens Where Field is Present

SIGNALING ENCODER (Modes: DTMF)

RECC Data (hex)

This display field lists the decoded data serially as it is received. This is the same information that the AMPS-TACS Data (hex) measurement displays.

Screens Where Field is Present

SIGNALING DECODER (Modes: AMPS-TACS, NAMP-NTAC)

SAT Freq (FVC)

This field is available only in AMPS-TACS mode.

This field sets the supervisory audio tone’s frequency. This signal is sent continuously whenever the FVC is selected, except while the Message is being sent.

Screens Where Field is Present

SIGNALING ENCODER (Modes: AMPS-TACS, NAMP-NTAC)

SAT Level (FVC)

This field sets the supervisory audio tone’s level. The unit-of-measure depends on the AFGen2 To setting.

Operating Considerations

SAT is turned off while the FVC message stream is being sent.

Screens Where Field is Present

SIGNALING ENCODER (Modes: AMPS-TACS, NAMP-NTAC)

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