Step 4. Wiring Network Cards; Wiring Guidelines - Simplex 4100ES Installation Manual

7.5

Step 4. Wiring Network Cards

The nodes in the network now have to be wired together, so that the NIC in one host panel connects to the NIC in the next panel. This
section contains guidelines and instructions for NIC wiring.
7.5.1

Wiring Guidelines

Refer to the following guidelines whenever field wiring the NICs.
• Network nodes must be wired right to left port, regardless of the media type selected.
• Class X protection is achieved by wiring the nodes in a loop fashion. A single fault (except an Earth fault) will cause the network
to reconfigure for degraded operation. A second fault (except an Earth fault) will result in the network dividing into two separate
networks.
• Class B is achieved by wiring the nodes in a linear fashion. Class B networks are not fault-tolerant and a single fault (except an Earth
fault) will result in the network dividing into two separate networks.
• Earth fault detection is performed on the left port only. When a network Earth fault occurs, the trouble is only reported on the node
whose left port is connected to the span.
• All 18 AWG wiring used with 4100-6056 Wired Media Cards must be twisted-shielded pair. All 24 AWG (telephone cable) used with
4100-6056 must be twisted pair. When shielded cable is used, the shield must be terminated to chassis Earth on the left port only.
• It is permissible to use mixed media in a network. For example, some spans may be "wired media" while others are optical fiber or
telephone modem.
• Each NIC has a jumper for selecting between network data rates of 57.6 kbps and
• 9.6 kbps. All cards in the network must be set for the same rate. (When modem media or physical bridging is used, the data rate must
be set for 9.6 kbps).
• Each NIC has a jumper for selecting between 8- and 9-bit network protocols. All cards in the network must be set for the same
network protocol. (When modem media or physical bridging is used, the protocol must be set for 8-bit).
• All network wiring except the shield is supervised and power limited.
• When wiring leaves the building, 2081-9044 Overvoltage Protectors are required. One overvoltage protector is installed where wiring
leaves the building; another is installed where wiring enters the next building.
A 655-158 Transient Suppressor (ordered as part of 748-599) is required for each modem-to-telephone line connection.
page 83
Figure 48: Installing the Daughter Card
4100ES Fire Alarm System Installation Guide
574-848 Rev. BQ