JB/T 9431-2014
250 mm×250 mm test target for overhead projector (English Version)
- Standard No.
- JB/T 9431-2014
- Language
- Chinese, Available in English version
- Release Date
- 2014
- Published By
- Professional Standard - Machinery
- Latest
- JB/T 9431-2014
- Replace
- JB/T 9431-1999
- Scope
- This standard specifies the type and size, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of the 250 mm × 250 mm transmission projection screen inspection plate (hereinafter referred to as the inspection plate). This standard applies to screen inspection plates for inspection, identification, and adjustment of transmissive projectors with a work surface of 250 mm × 250 mm.
JB/T 9431-2014 history
- 2014 JB/T 9431-2014 250 mm×250 mm test target for overhead projector
- 1999 JB/T 9431-1999 250×250mm Test Target for overhead projector
