Memotec CX900e, Hardware Reference Manual, Page: 59 / 200

5 SERIAL I/O CARDS
3006M100-002
5-7
Cable
The V.35EU Serial I/O Card connects to external devices through a separately-
ordered three-meter (10 ft.) straight through, shielded twisted pair cable (part no.
CBLA0015-010) with a male M-34 block connector (ISO 2593) at each end. The
V.35EU I/O port can drive up to a maximum of 2150 pF cable capacitance while
remaining compliant with applicable regulatory standards. If using cables othe
than those supplied by Memotec, ensure that the capacitance does not exceed
2150pF. This can be calculated from the cable manufacturer’s specifications of
capacitance per foot (pF/Ft), which differs from one cable to the next.
5.2.2 Speeds Supported by the V.35EU Serial I/O
The V.35EU Serial I/O card supports asynchronous or synchronous transmission
at speeds up to T1/E1.
Speeds for
slots 1 to 4
The V.35 port at slots 1 to 4 can operate, without split clocking, at the following
speeds:
• 50 bps - 2,048 Kbps for external clocking
• 375 bps - 2,048 Kbps for internal clocking
Speeds for
slots 5 and 6
The V.35 port at slots 5 and 6 can operate, without split clocking, at the following
speeds:
• 50 bps - 256 Kbps for external clocking
• 1,875 bps - 256 Kbps for internal clocking
Figure 5-5 V.35EU Serial I/O Card, Connector Plate