NS Viewer (Neutral STEP Viewer) is a high-performance interactive tool for viewing 2D/3D product models. NS Viewer reads STEP files and displays the product models that they include, as well as product information, assembly information, and shape information about each model.
NS Viewer is in accordance with the STEP international standards for the exchange of product model data.
NS Viewer supports the following STEP APs:

• AP203
• AP202
• AP214

Display the geometrical shapes of models, and drawing sheets.
NS Viewer displays the geometrical shapes of models, drawing sheets, draughting models, and styled models, so you can check shape and annotations visually.

• Sample screen images of STEP/AP203 files
  
• Sample screen images of STEP/AP202 files
  
• Sample screen images of STEP/AP214 files
  

Analyzes STEP file syntax.
In NS Viewer, HOP Library reads a STEP file at high speed, uncovering any syntax errors detected from STEP/Part 21 and the target AP. (Sample screen image)

Lists STEP file elements.
NS Viewer displays a list of elements contained in a STEP file. This is useful for understanding an outline of the STEP file. This list can be converted to a file of CSV form. (Sample screen image)

Displays product information.
NS Viewer displays the product information included in a STEP file, such as product names, product identifications, creation information (creators, creation dates, etc.), approval information (approval persons, approval dates, etc.). And in AP202, drawing information, such as drawing names and drawing sheet numbers, are included as well. (Sample screen image)

Displays assembly trees.
NS Viewer displays the assembly trees of the products included in a STEP file. (Sample screen image)

Analyzes models.
When you choose an edge, a face, or an annotation, its element number is displayed.
From the chosen face or edge, NS Viewer searches directly connected faces. And you can limit the display to specific faces--for example, directly connected faces only.

Sample viewing (1) Some faces are displayed: Display specific faces only.	Sample viewing (2) Directly connected faces are displayed in the list: Only the chosen face is displayed in red.
Sample viewing (3) Directly connected faces are displayed:

Several geometrical models are available.
Available geometrical models are wireframe, surface, and solid models. Available Conformance Classes are:

Table ‚P Available Conformance Classes of AP203, AP202 and AP214

Shape model	Conformance Class
	AP203	AP202	AP214
Non-shape	CC1	CC1	-
3D wireframe model, Surface model	CC2	CC5	CC1,CC2
Surface model with topology	CC4	CC10	CC1,CC2
Solid model	CC6	CC9	CC1,CC2

Available Conformance Classes of AP214 are:

• CC1 (Parts)
  
• CC2 (Assembly)
  

Supports MOSLA long-term CAD data archiving specifications.
In AP202 and AP203, NS Viewer also supports the subset of the long-term CAD data archiving format specified by MOSLA (Maturity Of Standard for Long-term CAD data Archiving).
In addition, we are the secretariats of MOSLA.

Supports SCADEC 2D CAD data exchange specifications.
In STEP/AP202, NS Viewer also supports the subset of the 2D CAD data exchange format specified by SCADEC (Standard Development Consortium for CAD data exchange in Japanese Construction field).
The SCADEC drawing data (2D CAD data) format shall be used by the construction sector (civil engineering, construction) with public procurement activities in the Japanese Government.

We compared NS Viewer with the other viewers corresponding to STEP/AP203, on two points: reproducibility of shape and response speed from reading a STEP file to displaying the shaded shape.
Target viewers are shown in the following:

• CALS Viewer (Inter data access)
• 3D-Viewer (Actify Inc.)

In NS Viewer, the time from reading a STEP file to displaying a shaded shape is 6.1 seconds per 1MB file size (the average of reading 53 practical STEP files). The speed of NS Viewer is therefore excellent compared to the other viewers. In fact, it's the same as the speed of the other viewers when they read and display IGES files.
And, with the other viewers, many cases are not displayed as before.

Download NS Viewer and try its functions and performance at no cost.
Simply enter the requested information to begin downloading the evaluation version of NS Viewer and sample STEP files.
The evaluation version has the same functions as the product version, and is free to use for 14 days.

Download

1 license for NS Viewer      US$720.

Please read the following page.

How to purchase NS Viewer

Nihonbashi TC Bldg. 2F, 19-7 Nihonbashi-Koami-cho, Chuo-ku, Tokyo 103-0016 Japan
STEP Group, Micro CAD Co., Ltd.
Tel: +81-3-6667-7102, Fax: +81-3-6667-7106
E-mail: NSViewer-customers@microcad.co.jp