Frame Info (802.15.4 HRP UWB)

Menu Path: Trace > Data > Demod > Frame Info

Frame Info displays data about the current frame.

The following frame information is listed:

• PHY Mode - indicates the PHY Mode selected by the user

• SYNC Status - indicates whether the format of the SYNC field is correct according to the configuration. If there are any pulses that are missing or have incorrect polarity or position, or if there are not the correct number of repetitions of the preamble Si symbol, this will show FAIL. Otherwise, it will show PASS.

  Pulse polarity/position is not checked in the region defined by Exclude TX Settling Time.

• SFD Status - indicates whether the format of the SFD Start frame delimiter field is correct according to the configuration. If there are any pulses that are missing or have incorrect polarity or position, this will show FAIL. Otherwise, it will show PASS.

• STS Status - indicates whether the format of the STS field is correct according to the configuration. If there are any pulses that are missing or have incorrect polarity or position, this will show FAIL. Otherwise, it will show PASS.

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• PHR Status - indicates whether the format of the PHR field is correct according to the configuration. If there are any pulses that are missing or have incorrect polarity or position, this will show FAIL. Otherwise, it will show PASS.

• SECDED (Single Error Correct, Double Error Detect) - result of PHR FEC Forward Error Correction: An encoding technique that allows a limited number of errors in digital stream to be corrected based on knowledge of the encoding scheme used..

  • PASS: PHR FEC passed with no errors.
  • SingleError: there was one bit error that could be corrected.
  • DoubleError: there were two bit errors, but could not be corrected.
  • Unknown: there were more than two bit errors, uncorrected.

• SECDED Error Loc - when SECDED=SingleError, shows either the index (zero based) of the PHR bit that was incorrect (and corrected to generate the IQ Ref trace) or "ParityBits" to indicate the single error bit was in the PHR parity bits.

Non-ERDEV, ERDEV-BPRF PHY Modes:

• Data Rate - decimal value of Data Rate field in PHR. To the right, the nominal data rate is shown in Hz.

• Frame Length - decimal value of Frame Length field in PHR. To the right, the value of the Frame Length field in PHR, shown in units of octets.

• Ranging - decimal value of Ranging bit in PHR. To the right, the interpreted "YES/NO" value of Ranging bit is shown.

• Reserved - value of Reserved bit in PHR.

• Preamble Duration - decimal value of Preamble Duration field in PHR. To the right, the corresponding number of Si repetitions is shown.

ERDEV-HPRF PHY Mode:

• A1 - value of A1 bit in PHR

• A0 - value of A0 bit in PHR

• Frame Length - decimal value of Frame Length field in PHR. To the right, the value of the Frame Length field in PHR, shown in units of octets.

• Ranging - decimal value of Ranging bit in PHR. To the right, the interpreted "YES/NO" value of Ranging bit is shown.

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• Payload Status - indicates whether the Payload portion of frame is correct and checks that there are the correct number of symbols according to the configuration. If there are any pulses that are missing or have incorrect polarity or position, this will show FAIL. Payload Status will also fail if the CRC Cyclic Redundancy Check fails. Otherwise, it will show PASS.

• MAC FCS - shows the PASS/FAIL status of the MAC (Medium Access Control: In most wired and wireless networks, a mthod is used to control how and when a device can transmit data over the communications link. This is the network's Medium Access Control scheme. The MAC protocol operates within the Data Link layer (Layer 2) of the ISO OSI 7 layer Model. The IEEE 802.11 standard, for example, specifies the MAC protocol for sharing of the wireless medium, packet formats, addressing, eror detection and recovery following errors. CRC.

See Also

Available Trace Data