DSV11-S Communications Option User Guide

This "DSV11-S Communications Option User Guide" provides comprehensive instructions for installing and testing the DSV11-S, a two-channel, high-speed synchronous communications option for MicroVAX II and BA200 series Q-bus backplanes.

Key aspects covered in the document include:

1. Introduction and Features: Describes the DSV11-S's capabilities, including support for synchronous protocols (DDCMP, HDLC/SDLC, BISYNC) and various interfaces (RS-423, RS-422, RS-232/V.24, V.35). It details maximum line speeds and notes the impact of cable length on data throughput.
2. Connection Procedures: Provides a step-by-step guide on how to attach the necessary adapter and extension cables to connect the DSV11-S board to a modem or similar device.
3. Installation Testing: Outlines procedures for verifying the cable connections and DSV11-S operation using network control program (NCP) loopback tests for DECnet/X.25 circuits, or by performing typical tasks for BISYNC protocols, and offers troubleshooting advice for failed tests.
4. Cables and Specifications: Appendices list compatible adapter cables, extension cables (with various lengths), and loopback test connectors. They also provide general specifications, including environmental conditions and electrical requirements for the DSV11-S.

The guide is intended for anyone installing external cables to connect the DSV11-S to a modem.