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CheckFox Uplink Payload Description

Each test message (uplink) consists of following data content:

1. Byte

Proprietary “message sequence number” MSB (Proprietary “message sequence number” is a 16-bit value.)

2. Byte

Proprietary “message sequence number” LSB (Proprietary “message sequence number” is a 16-bit value.)

3. Byte

Upper 4 bits (“main menu selection” identifier)

0x01 Outdoor above 1m
0x02 Outdoor 1m refer.
0x03 Outdoor 0m ground
0x04 Indoor
0x05 Deep Indoor

Lower 4 bits (“measurement type” identifier)

0x01 Survey 1x immediately
0x02 Survey 1x delayed
0x03 Final 6x immediately
0x04 Final 6x delayed
0x05 Downlink test
0x06 Periodic measurement 1min + GPS
0x07 Periodic measurement 10min + GPS
0x08 Periodic measurement 60min + GPS
0x09 Periodic measurement 10min no GPS
0x0A Periodic measurement 60min no GPS
0x0B Audit 100x immediately
0x0C Audit 100x delayed

4. Byte

Non-periodic measurements

Number (1-255) of messages being sent in present test batch.

Periodic measurements

Batch sequence number (0-255). This value is incremented by 1 each time a batch is started by the user.

5. Byte

Non-periodic measurements

Actual message counter (1-255) = sequence number of message in present test batch.

Periodic measurements:

N/A (fifth byte not used)