https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
4〔B/W CRT Module

4〔B/W CRT Module

Shenzhen XinGao Electronics Science Co., Ltd.
Region: China
Update: 08/29/2008
Key Specifications
Name 4〔B/W CRT Display Module

Model Number XG-680C

Power Input DC12V-18V

Video Input CCIR:0.7-1.4Vp-p

Input Signal Level 0.7-1.4Vp-p

Image Aspect Ratio 4:03

Image Reproduction Ratio ?85

Central Excursion ?3

Max. Brightness ?380 Lux

Brightness Grade ?10

Horizontal Resolution(A) ?420 Line

Grating Distortion ?5

Scan Nonlinearity Distortion ?10

Synch.Range Line Introduce Range Line Keep Range Field Synch. Range 15625??200 Hz 15625??400 Hz 47??3 Hz

Anode High Pressure Stability ?10

Video Response(??1dB-3dB) ?8MHz

Linearity Wave Response K50 ?5 Kb?5

DC Distortion ?30

Volt Range for Image Stability DC11.5V-15.0V

Input Impedance ?100K

Large Area Contrast ?60 Times

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions