User's Manual

Table Of Contents

CATC MERLIN MOBILE 1.00 CHAPTER 5

User’s Manual Recording Bluetooth Traffic

DRAFT

• FLOW — The 1-bit flow indication field can be set to 1 (flow-on) or 0 (flow-off).

Selecting Don’t care causes Merlin Mobile to ignore this field.

• Length — Use the Length field definition to specify the length, in bytes, of the payload

body (the payload minus the payload header and CRC code). For single-slot packets, the

length value may range from 1 to 29 bytes. For multi-slot packets, the length may be

from 1 to 339 bytes. To define the Length field, select an operator (=, >, <, >=, or <=)

from the drop-down list and enter a value, in bytes, in the text box.

Data Pattern

The Data Pattern event allows the user to specify an 8-byte payload data pattern.

To specify a data pattern, enter the pattern into the text box or click the Edit button to open

the Data Editor dialog.

Data Editor dialog

The Data Editor dialog can be used to define the data pattern. Enter bit pattern, Mask, or

Match values for data bytes 00 through 07. Bit patterns should be entered in binary (1 or 0);

use “X” for irrelevant values. Mask and Match values should be entered in hexadecimal.

Errors

Use the Errors event to set up actions based on one or more of these errors:

• CRC Error — A CRC error in the packet data payload of the previous Bluetooth data

packet.

• HEC Error — An HEC (header error check) error in the packet header for the previous

Bluetooth data packet.

• FEC Error — An uncorrectable FEC (Forward Error Correction) error in the packet

header for the previous Bluetooth data packet.

• FEC Threshold Exceeded — Indicates that the number of single-bit FEC errors detected

since the current recording started has exceeded the specified value.

• Invalid Packet Type — An invalid value was detected in the packet type field of the

packet header for the previous Bluetooth data packet.

• Header Length Error — Indicates that a Bluetooth data packet was terminated before all

bits of the packet header were received.

• Payload Length Error — Indicates that the payload of a Bluetooth data packet was

either longer than expected, or that a Bluetooth data packet terminated before the

expected end of the payload data.

• Sync Lost — Indicates that a loss of piconet synchronization occurred during the fre-

quency slot prior to this slot.