Athena Access

16 Port Asynchronous Expansion Module Specification Sheet.

Features

 

      Port Size 16 Asynchronous (X.3) ports.

      Indicators One Bi-colour LED per port, Green = Device Connected.

      Emulation Both DTE and DCE supported via cable

      Baud Rates 50bps through 115Kbps

      Data Options 5 8 bit data plus parity.

      Parity Options Odd, even, mark, space and none.

      Flow Control Hardware (RTS/CTS), Software (XON/XOFF) and none.

      Ring Indicator Input Available in DTE configuration only.

      Link Break Both line break detection and generation supported.

      FIFO 16 Byte transmit and receive per UART

      Error detection parity, framing and overrun.

      Physical EIA232/E (V.24), 8 Pin RJ45

      Protocols X.3, X.28. X.121, X.29

 

Expansion Module

 

The 16 port Asynchronous Expansion Module, Develcon part number B31700 installs on an Athena Access mother board. The ports are accessible via RJ45 connectors from the rear of the unit.

 

 

 

RJ45 port Connectors.

 

The Athena Access 16-Port Async Expansion module provides 16 RJ-45 female connectors on the rear of the chassis. Connections to TIA-232/V.24 devices are provided by standard RJ-45 Male-Male cables and a DCE or DTE adapter, as required.

 

The DCE adapter allows the Access to provide the signals on the DB-25 Female connector to emulate a DCE device. Terminal type devices can be directly connected to this adapter.

 

The DTE adapter allows the Access to provide the signals on the DB-25 Male connector to emulate a DTE device. The adapter can be directly connected to TIA-232/V.24 modems.

 

RJ-45 Interface

 

DCE Emulation

 

DTE Emulation

Pin

Signal

 

Signal Description

DB25 Pin

 

Signal Description

DB25 Pin

1

Input

 

 

 

 

Ring Indicator

22

2

Output

 

Data Carrier Detect

8 & 6

 

Data Terminal Ready

20

3

Input

 

Data Terminal Ready

20

 

Data Carrier Detect

8

4

Sig. Gnd

 

Signal Ground

7

 

Signal Ground

7

5

Output

 

Receive Data

3

 

Send Data

2

6

Input

 

Send Data

2

 

Receive Data

3

7

Output

 

Clear to Send

5

 

Request to Send

4

8

Input

 

Request to Send

4

 

Clear to Send

5