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org.bluetooth.characteristic.plx_continuous_measurement

Last Modified: 2015-07-14 Approved: Yes

Name: PLX Continuous Measurement Characteristic

Type: org.bluetooth.characteristic.plx_continuous_measurementDownload / View

Assigned Number: 0x2A5F

Summary:

The PLX Continuous Measurement characteristic, if supported, is used to send periodic pulse oximetry measurements. This characteristic is a variable length structure containing the Flags field (to indicate presence of optional fields), the SpO2PR-Normal field, and depending on the contents of the Flags field, the SpO2PR-Fast field, the SpO2PR-Slow field, the Measurement Status field, the Device and Sensor Status field, and/or the Pulse Amplitude Index field.

Value Fields

Names Field Requirement Format Minimum Value Maximum Value Additional Information
Flags
Mandatory
8bit N/A N/A
Bit Field
Bit Size Name
Definition
Key Value Requires
0 1 SpO2PR–Fast field is present
0 False
1 True C1
1 1 SpO2PR-Slow field is present
0 False
1 True C2
2 1 Measurement Status field is present
0 False
1 True C3
3 1 Device and Sensor Status field is present
0 False
1 True C4
4 1 Pulse Amplitude Index field is present
0 False
1 True C5
5 3 Reserved for future use
SpO2PR-Normal - SpO2
Information:
Unit is percentage with a resolution of 1
Unit:
org.bluetooth.unit.percentage
Exponent: Decimal, 0
Mandatory
SFLOAT N/A N/A None
SpO2PR-Normal - PR
Information:
Unit is beats per minute with a resolution of 1
Unit:
org.bluetooth.unit.period.beats_per_minute
Exponent: Decimal, 0
Mandatory
SFLOAT N/A N/A None
SpO2PR-Fast - SpO2
Information:
Unit is percentage with a resolution of 1
Unit:
org.bluetooth.unit.percentage
Exponent: Decimal, 0
C1
SFLOAT N/A N/A None
SpO2PR-Fast - PR
Information:
Unit is beats per minute with a resolution of 1
Unit:
org.bluetooth.unit.period.beats_per_minute
Exponent: Decimal, 0
C1
SFLOAT N/A N/A None
SpO2PR-Slow - SpO2
Information:
Unit is percentage with a resolution of 1
Unit:
org.bluetooth.unit.percentage
Exponent: Decimal, 0
C2
SFLOAT N/A N/A None
SpO2PR-Slow - PR
Information:
Unit is beats per minute with a resolution of 1
Unit:
org.bluetooth.unit.period.beats_per_minute
Exponent: Decimal, 0
C2
SFLOAT N/A N/A None
Measurement Status
C3
16bit N/A N/A
Bit Field
Bit Size Name
Definition
Key Value
5 1 Measurement Ongoing
0 False
1 True
6 1 Early Estimated Data
0 False
1 True
7 1 Validated Data
0 False
1 True
8 1 Fully Qualified Data
0 False
1 True
9 1 Data from Measurement Storage
0 False
1 True
10 1 Data for Demonstration
0 False
1 True
11 1 Data for Testing
0 False
1 True
12 1 Calibration Ongoing
0 False
1 True
13 1 Measurement Unavailable
0 False
1 True
14 1 Questionable Measurement Detected
0 False
1 True
15 1 Invalid Measurement Detected
0 False
1 True
0 5 Reserved for future use
Device and Sensor Status
C4
24bit N/A N/A
Bit Field
Bit Size Name
Definition
Key Value
0 1 Extended Display Update Ongoing bit supported
0 False
1 True
1 1 Equipment Malfunction Detected bit supported
0 False
1 True
2 1 Signal Processing Irregularity Detected bit supported
0 False
1 True
3 1 Inadequite Signal Detected bit supported
0 False
1 True
4 1 Poor Signal Detected bit supported
0 False
1 True
5 1 Low Perfusion Detected bit supported
0 False
1 True
6 1 Erratic Signal Detected bit supported
0 False
1 True
7 1 Nonpulsatile Signal Detected bit supported
0 False
1 True
8 1 Questionable Pulse Detected bit supported
0 False
1 True
9 1 Signal Analysis Ongoing bit supported
0 False
1 True
10 1 Sensor Interference Detected bit supported
0 False
1 True
11 1 Sensor Unconnected to User bit supported
0 False
1 True
12 1 Unknown Sensor Connected bit supported
0 False
1 True
13 1 Sensor Displaced bit supported
0 False
1 True
14 1 Sensor Malfunctioning bit supported
0 False
1 True
15 1 Sensor Disconnected bit supported
0 False
1 True
16 8 Reserved for future use
Pulse Amplitude Index
Information:
Unit is percentage with a resolution of 1
Unit:
org.bluetooth.unit.percentage
Exponent: Decimal, 0
C5
SFLOAT N/A N/A None

Note:

The fields in the above table, reading from top to bottom, are shown in the order of LSO to MSO, where LSO = Least Significant Octet and MSO = Most Significant Octet.