Comtech EF Data CDM-750 - Manual (Page 58)

CDM-750 Advanced High-Speed Trunking Modem Revision 2
Rear Panel Connections MN-CDM750
3–12
3.2.3.2 J7 | OPTICAL Connection, 1000Base-SX Cage
It is strongly suggested that the user does NOT mix products of different speeds
(e.g., 10BaseT on J5, 100BaseT on J6, and GigE on J7), or different duplex operation
(e.g., half duplex on J5 and full duplex on J7), as this may cause a degradation in
speed/performance of the data link traffic.
The J7 | OPTICAL Gigabit Traffic connection is available by FAST‐enabling this
interface; the CDM‐750 then accepts the optional Optical Gigabit Ethernet Interface
module, an industry‐standard SFP (Small Form Factor Pluggable) interface.
3.2.3.2.1 Optional Optical Gigabit Ethernet Interface (CEFD P/N IC-0000058)
Figure 3-4. Typical SFP Module Installation
The optional Optical Gigabit Ethernet Interface (CEFD P/N IC‐0000058) is an 850mm multi‐mode
transceiver module with LC‐Duplex fiber optic connectors. It meets SFP Multi‐Source Agreement
(MSA) SFF‐8074i and SFF‐8472 Rev. 9.3. Note the following:
Typical link distance for 1000BaseSX Cable Requirement
550m 50/125 mm cable
275m 62.5/125 mm cable
Install the module as shown in Figure 3‐4. Note that this type of installation is typical for
installation of an optional SFP module, whether in the CDM‐750 chassis J7 | OPTICAL port, or
using the optional STM‐1 Copper or OC‐3 Single/Multi Mode PIIC module kits.