SOP for Analysis of Non-Conforming PIT Tags
From PTAGISWiki
| Standard Operating Procedure
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Subject:
| SOP for Analysis of Non-Conforming PIT Tags
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Author:
| Alan Brower
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Approved by:
| UNAPPROVED
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Contents |
Objective
This procedure defines testing to be performed on PIT Tags suspected to be of failing or of marginal performance.
Scope
Performing due diligence dictates that if a PIT Tag exhibits marginal performance, additional testing should be performed to confirm adequate functionality for production use. This procedure encompasses additional testing to further determine the suitability of said PIT Tags for production use in the CRB (Columbia River Basin). It is intended to be performed as needed on PIT Tags exhibiting unusual behaviors/characteristics found in the course of normal operations.
Responsibilities
It is the responsibility of persons discovering the unusually behaving PIT Tags to coordinate activities with the PTAGIS Field Operations supervisor. This procedure is to be performed by PTAGIS Field Operations personnel.
Procedure
PIT Tags that do not pass all of the following tests shall be quarantined and brought to the attention of the PTAGIS Field Operations supervisor.
Visual Examination
- Inspect the PIT Tag under a microscope. Verify that there is no breach in the encapsulation. Also inspect for abnormalities: it may be possible to view maladies such as a broken ferrite, damaged windings, or other debilitating issues.
APTTS (Automated PIT Tag Test System)
NOTE - As of 11/6/2007, APTTS configuration "Non-Conforming Extensive Analysis2.cfg" performs these tests in batch mode for TX1411SST. See table 1.
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(Non-Conforming Extensive Analysis2.cfg) |
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- Perform the following tests using the APTTS:
- Size
- Verify that the length and diameter of the UUT (Unit Under Test) are within the manufacturers specification for the particular model.
- Size
- Frequency Response Testing
- Note - Choose the excitation power level carefully for the given PIT Tag model. Resonant frequency drops and bandwidth widens as excitation power increases.
- Examine the resonant frequency, verify that it is within +/-3KHz of nominal.
- Examine the bandwidth, verify that it is within +/-4KHz of nominal.
- Examine the Q, verify that it is within +/-30% of nominal.
- Turn-on Voltage
- Examine the turn-on voltage, verify that it is within +/-500mV of nominal.
- Turn-on Voltage
- Fixed Frequency and Amplitude
- Examine the amplitude returned by the PIT Tag, verify that it is within +/-50% of nominal.
- Fixed Frequency and Amplitude
- Modulation Percentage
- Examine the Amplitude returned by the PIT Tag, verify that it is within +/-50% of nominal.
- Modulation Percentage
- Read the PIT Tag
- Verify that the APTTS can read the PIT Tag.
- Read the PIT Tag
FS2001F-ISO Testing
- Verify that the UUT can be read on an FS2001/paddle antenna running on AC power and set to 30% operating power.
Lab Wheel Speed Test
- Equipment:
- Lab wheel and 12" juvenile monitor
- FS1001 transceiver tuned and reading a signal level <6% no tag in the field
- Attach the UUT to the belt. Set the transceiver to "unique on". Run the belt at 27' per second for 20 revolutions.
- Verify that the UUT was read on each revolution.
Large Antenna Read Range Test
- Equipment:
- 48"x48" Antenna in RF Room
- FS1001A transceiver tuned and reading a signal level <6% no tag in the field
- Read-range distances shall be measured along the Z-axis out from the center of the antenna. The read-range distances shall be measured when the transceiver is steadily detecting 10 tag codes out of 100 attempts (hit-rate of 10) in the continuous read mode.
- Measured read-range must be at least 50% of typical for a particular PIT Tag model.
References
PTAGIS Field Operations - PTAGIS Kennewick WA field office
APTTS - Automated PIT Tag Test System
