L 1000 Statement of Compliance

L 1000 Statement of Compliance

The RJS Laser Inspector L1000 with model CR1 scanner performs the traditional method of verification. This document is intended to describe the verifier’s standards of compliance.

Average Bar Deviation Calculation Compliance

Digital data received by the scanner (see note 1) is used to calculate Average Bar Deviation and the ANSI method Decodability calculation. This is the basis for all bar code element measurements provided by this verifier model.

The L1000 average bar deviation analysis is traceable to the average bar deviation calculated by an RJS Inspector 4000 ANSI method verifier. This makes the L1000 traceable to the ANSI method of element width calculations (which are also used in the Inspector 4000 to calculate the ANSI method Decodability parameter.)

A reference symbol is included on the bar code test sheet supplied with each Laser Inspector Model L1000. The reference is created by scanning the symbol with a calibrated Inspector 4000 and then marking the symbol with the location of the “A” in the Inspector 4000 average bar deviation graph display.

ANSI Method Decodability Calculation Compliance

The ANSI method Decodability calculation is traceable to the Calibrated Conformance Standard Test Card for EAN/UPC Symbol Verifiers.

Final system test includes two steps for ensuring accuracy:

  1. Scanning a reference symbol and ensuring the placement of the “A” is calculated to be within +/- one (1) location marked on the reference. This equates to approximately +/- 21% accuracy between all Laser Inspectors for average bar code deviation calculations.
  2. Scanning the Decodability (BAR) symbol on the Calibrated Conformance Standard Test Card at the proper distance and angle and ensuring the Decodability calculation is within +/- 4 % of the NIST traceable value marked on the card.


  1. The L1000 does not require any calibration or adjustments. The laser scanner is screened for digitizer accuracy to be within acceptable tolerances for bar width deviation measurements and the ANSI method Decodability calculation.