August 2013 2-34 P/N 06-236530-001
2-18 FIBER-OPTIC CONVERTER CARD
The Fiber-Optic Converter Card allows networked ARIES Control Units to be interconnected
using fiber-optic medium. Use one OCC to terminate each end of a fiber-optic communications-
channel(s) segment. The ARIES networking structure supports a mixture of fiber-optic and
twisted-wire interconnections among networked control units.
Specifications for the Fiber-Optic Converter Card are provided in Table 2-4.
The OCC Cabinet should be located as required in the same room as its parent Control Unit for
convenient wiring connections (24 VDC and RS485 communications).
Typical Class-B, Style-4 and Class-A, Style-7 interconnections using a mixture of media are
shown in Figures 2-36 through 2-39.
Figure 2-36 shows a typical single-channel system using 62.5/125 m duplex fiber-optic media.
Table 2-4. Fiber-Optic Converter Card Specification
Description Specification
Part Number 74-600000-006
Weight 3.3 lb/1.5 Kg
Finish Dark Blue (Color 35044 of Fed Std 595A)
Input Voltage 24 VDC Nominal, 18 VDC Min, 28 VDC Max
NOTE: Must be connected to a power supply listed for fire-protective signaling
use only.
Input Current 200 mA Max
Electrical Connections UL Recognized Terminal Blocks for wire size 26 – 12 AWG
Fiber-Optic Connections Type ‘ST’
Data Ports EIA/TIA-485
Baud Rate 9600 Baud
Optical Link Distance 5280 ft (With no more than 4 dB/km cable attenuation)
Temperature Range 0 – 50 Deg C
Humidity Range 0 – 93% RH, non-condensing
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