Serial Port and User Equipment Connections
Memotec Inc. 5-3
5.2 Serial Port
One (1) built-in serial port for WAN/user traffic, with 2 optional serial ports using the dual
serial port interface card (SDM-9220/9230 only) or two single serial port interface cards
(SDM-9120/9140 only):
• HD-26 female connector
• Asynchronous speeds: 300 bps to 115.2 Kbps
• Synchronous speeds: 1200 bps to 6 Mbps (6144 Kbps) without data
compression; 896 Kbps link port maximum speed with data compression
For further details concerning the serial port, turn to “WAN/User Port Specifications” on
page 5-6.
5.3 Custom HD-26 Cables
Each serial port requires a custom-made HD-26 male cable which can be ordered from
Memotec Inc. or your NetPerformer distributor. For ordering information, refer to “Sales
Contacts” on page 1-6.
NOTE: The same custom cables are used for the port built into the base unit and
ports on the dual serial port interface card.
The required cable depends on the interface and gender of the attached equipment.
Twelve custom HD-26 serial cable models are available:
• V.35/V.11 DCE, V.35/V.11 DTE (for details see “V.35/V.11 Cables” on page 5-7)
• TIA-232 (V.24) DCE, TIA-232 (V.24) DTE (see “TIA-232 (V.24) Cables” on
page 5-7)
• X.21 DCE, X.21 DTE, with 4-40 screw on the DB-25 connector (see “X.21
Cables” on page 5-7)
• X.21 EU DCE, X.21 EU DTE, with metric M3 screw on the DB-15 connector (see
“X.21 EU Cables” on page 5-8)
• TIA-449 (V.36) DCE, TIA-449 (V.36) DTE (see “TIA-449 (V.36) Cables” on
page 5-8)
• TIA-530 DCE, TIA-530 DTE (see “TIA-530 Cables” on page 5-8)
All cables are 1.8 meters (6 feet) long, and have HD-26 male connectors at one end. At
the other end:
• A male connector indicates that the cable is DTE and that it connects to a DCE
device (a modem, for example).
• A female connector indicates that the cable is DCE and that it connects to a DTE
device (a terminal or another NetPerformer, for example).
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