A terminal program displays the complete Zigbee I/O Data Sample Rx Indicator frame because it treats the received data as a byte stream. The required analog sample occupies two bytes within that frame, so extracting and timestamping it requires an application that understands the API frame structure rather than a basic terminal.
Why the terminal displays the complete frame
Terminal software can capture all bytes received from the Zigbee device, but the evidence does not identify a terminal capable of isolating the analog sample. It also does not provide the sample offset, byte order, channel selection, or frame-length rules, so those details must come from the applicable device documentation or observed frame definition.
Use a frame-aware parsing application
Create an application that reads each complete API frame, validates that it is the expected I/O Data Sample Rx Indicator type, parses its fields, and outputs only the selected two-byte analog value. Do not extract two bytes from a fixed stream position until the frame boundaries and field layout are confirmed.
read complete API frame
confirm expected receive-frame type
parse frame fields using the documented layout
select required analog sample
output timestamp and two sample bytesTimestamp and output decisions
| Decision | Required handling |
|---|---|
| Timestamp point | Choose whether the timestamp represents frame receipt or parsed-record output, then apply that definition consistently. |
| Analog channel | Select the required channel from the parsed frame; the evidence does not identify it. |
| Byte interpretation | Confirm byte order and scaling before converting the two bytes into an engineering value. |
| Output format | Write only the timestamp and selected two-byte sample, or its validated converted value. |
Parsing and verification procedure
- Capture a complete frame with the existing terminal software and retain it as a reference.
- Implement a reader that detects complete API frames rather than consuming arbitrary byte pairs.
- Parse the expected I/O Data Sample Rx Indicator fields and select the required analog sample.
- Record a timestamp at the defined processing point and write the two sample bytes.
- Compare the extracted bytes with their position in the retained complete frame to verify the parser.
FAQ
Can a terminal display only the two Zigbee analog sample bytes?
The supplied evidence does not identify a terminal that performs this extraction. Use a custom application that parses the complete API frame and outputs only the required two bytes.
Can I read the analog sample from a fixed byte position?
Only after confirming the documented frame boundaries and field layout. The evidence does not specify the offset, byte order, or channel arrangement.
Where should I add the timestamp to a Zigbee sample?
Add it in the parsing application and define whether it marks complete-frame receipt or parsed-record output. Use the same timestamp point for every sample.