e SuperSerial Technology SST-4I/RJ Multiport Board Hardware Reference Guide PN 560128/A June 1997
Overview Equinox SuperSerial Technology (SST) RJ Boards are intelligent, high-speed (up to 921.6 kbps) multiport boards providing high performance serial I/O solutions for ISA bus systems. All port interfaces are standard RS-232 with partial modem control (one control signal out and two control signals in) and voltage surge protection. (If your application requires EISA, PCI, Micro Channel bus and/or full modem control, contact your Equinox reseller for information on other SST products.
Plug and Play ISA SuperSerial Technology Boards must be assigned a unique I/O base address. This can be accomplished by the use of ISA Plug and Play (PnP) or the I/O Base Address Switch S1. PnP for ISA boards is not currently supported by all Operating Systems (OS). Consult your OS documentation to determine if it supports PnP. If PnP is not supported by your OS, or if you are unsure, place the PnP jumper (JP1) in the position closest to switch S1.
Device Cabling Figure 2 below shows the RJ-11 port orientation and pin-outs for the SST-4I/RJ. Note that pin 3 acts as Data Terminal ready (DTR) when connected to a modem (i.e. it will be dropped when the operating system wants to disconnect the call). It will act as Request To Send (RTS) when a device is directly connected and hardware flow control is enabled. Figure 2.
Device Cabling (continued) Figure 4. Cable pin-outs for SST-4I/RJ to PC DB-9 Figure 5. Cable pin-outs SST-4I/RJ to Modem DB-25 Diagnostics Use Equinox RJ Loopback connector 750082 with the ssdiag or eqnloop diagnostic utility (see software manual PN 560084, PN 560085, or PN 560093) and set parameters to external loopback.
Modular Adaptors Modular adaptors are available to convert modular jacks to DB-25 or DB-9 connectors. Table 2 below describes the modular adaptors available from Equinox. Use a standard reversing 4-wire (data only) or 6-wire RJ-11 modular cable with these adaptors.
DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 and EN 45014 Manufacturer’s Name: Manufacturer’s Address: declares, that the products Product Names: Equinox Systems Inc.
© 1997 Equinox Systems Inc. All rights reserved. Reproduction without permission prohibited. Equinox, Megaport, Megaplex, and SuperSerial are registered trademarks of Equinox Systems Inc. All other brands and product names are trademarks of their respective holders. Equinox makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
