Simplex 4100ES - Modem Media Card Jumper Settings; Fiber Media Jumper Settings (746-109 Only)

4-8
Chapter 4 Networking
Step 1. Configuring Network Cards (continued)
Modem Media
Card Jumper
Settings
Non-4100ES/4100U only. P4 and P5 on the modem media card tell the system how the card is
being used. (Figure 4-6):
P4: Sets the card up as a network media card or a standalone modem.
• Position 1 – 2 (required): Sets the card up as a network media card, a service modem, or a
physical bridge.
• Position 2 – 3: Sets the card up as a stand-alone modem.
P5: Specifies which connector will be used for data transmission.
• Position 1 – 2: For modem media board or stand-alone modem. Specifies that the 
transmission data comes from the 40-pin connector (J1).
• Position 2 – 3: For service modem or physical bridge. Specifies that the transmission data
comes from the 10-pin RS-232 connector (P1).
Fiber Media
Jumper Settings
(746-109 only)
JW1 is used to adjust the link power budget. If communication problems are encountered,
make sure that the fiber connections comply with ANSI/TIA/EIA 568-B-3 industry standards.
The low power setting is preferred for all 62.5um fiber links less than 11dB and 50um fiber
links less than 6.6.dB.
Link Power Budget Settings (62.5um fiber/50um fiber):
Low 11dB / 6.6 dB
Med 16 dB /11.6 dB
High 20.4dB / 17 dB