Capacity of the recording depends on the card version, e.g. 1 MB card can storage test of a rope of 600 m in length and 4 MB - 2400 m. This way, the user can archive many test records for further comparative analysis and can employ software to help him in his work on rope test results. Also data from Memory Card may be replayed on a strip chart with an MD120 Defectograph, including old test records from computer storage memory. Before a rope test, the user can enter into the instrument a specific identification code, which will be printed on the chart, and test settings like channel sensitivities will be stored with this identification code in non-volatile memory in the instrument. If the same codes are entered in future, the same settings may be applied automatically.
Recording is done by means of a thermal array line printing on thermal paper.
All of the instrument settings and measured values are displayed on a liquid crystal display. The instrument is designed for field service. Built in aluminium covered case with handle, the MD120 Defectograph is easy to carry. Automatically microprocessor controlled recharging while external power is connected is provided. Easy access to the test records with computer software tools seems to be a real aid to make faster progress in the development of rope evaluation methods.