CheckFox Uplink Payload Description

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

1st Byte

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

2nd Byte

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

3rd Byte

Upper 4 bits (“main menu selection” identifier)

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

Lower 4 bits (“measurement type” identifier)

VALUE	MEANING
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

4th 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.

5th 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)