Xerox 6180N Generic MICR Fundamentals Guide - Page 90
E13B calibration document
UPC - 095205425307
View all Xerox 6180N manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 90 highlights
Quality control MICR signal strength is the only magnetic specification in ANSI standards. Magnetic testers are needed to identify magnetic versus non-magnetic extraneous ink, and they can be useful in interpreting waveform uniformity issues. All other standards use optical dimensions and require optical or visual inspection. MICR quality decisions cannot be based solely on magnetic test equipment without regard to ANSI standard conformance requirements. Refer to "Signal strength," later in this chapter, for information on signal strength test specifications. NOTE: Due to calibration, design, and manufacturing differences, signal strength readings from MICR testers vary to some degree, even when they are set up correctly and in calibration. These differences are caused partly by the different MICR characteristics of the printing technology that is used and partly by the magnetic read and write head design. If the test equipment is not in correct calibration, there are very large differences. E13B calibration document The E13B calibration document is used to determine if the MICR tester is measuring the signal correctly. It provides a printed MICR character (On-Us symbol) calibrated by the manufacturer. The MICR character signal value, read by the master MICR reader, has been written in the space provided (see the following figure). All good calibration documents have the notation "WCC," reflecting calibration to the most recent ANSl standard. Calibration documents without this notation should not be used until their accuracy can be checked against a known good document. 6-4 Generic MICR Fundamentals Guide