M9B-HFS INTERFACE
INSPECTION AND CONFIGURATION
Release 1.0 (97/10)
2-5
2.4 Connecting the Fiber Optic Line
To connect the option card to a computer, you need:
•
two fiber optic cables, or one duplex fiber optic cable (for receiving and transmitting)
•
a computer with a fiber optic serial port
2.4.1
Fiber Optic Cable
The maximum fiber optic cable length for connecting the M9B-HFS option card to a computer is 20 meters. This
length is dependent on the type of fiber optic cable used. The M9B-HFS uses a Hewlett Packard (HP)
receiver/transmitter pair with HP part numbers shown in Table 2.4-1. Select the fiber optic cable best suited for
use with these parts.
Table 2.4-1 Receiver/Transmitter Pair
Description
HP Part #
Fiber optic receiver
HFBR-1521
Fiber optic transmitter
HFBR-2521
You need two fiber optic lines: one for transmitting and one for receiving. These cables connect to the interface
at the Rx and Tx ports on the rear panel subplate.
2.4.2
Fiber Optic Serial Interface
You will need a fiber optic serial port to connect the fiber optic line to your computer. The fiber optic serial port
must have both receiver and transmitter connections for the fiber optic cable. You can use an RS232 interface
with the M9B-HFS by using a fiber-to-RS232 serial adapter. See Section 5.3.4 for more information on obtaining
parts for fiber optic connections.
Standard fiber optic cable assembly and fiber to serial adapters are available from your electronics/computer
equipment supplier.
Figure 2.4-1 Sample Configuration of a Fiber Optic Connector
(Duplex connector shown)
Tx
(on subplate rear panel)
Rx
(on subplate rear panel)
Duplex Connector
(Optional)
Fiber Optic Lines