40
GENERAL
D400 SUBSTATION GATEWAY USER’S MANUAL
FIBER OPTIC SERIAL ADAPTER
CHAPTER 3: SETTING UP COMMUNICATION CARDS
Fiber optic serial adapter
The Fiber Optic Serial Adapter is available in two variants:
•
Glass Optical Fiber (GOF) Serial with 820-850 nm ST connectors
(GE Item No. 520-0209LF)
•
Plastic Optical Fiber (POF) Serial with 660 nm Agilent Versatile Link connectors (GE Item
No. 520-0210LF)
NOTE
The plastic optical fiber is limited to 38.4 kbps operation and a lower operating
temperature limit of 0 °C.
The Fiber Optic Serial cards include two pairs of channels for signal transmission (TX1/TX2)
and reception (RX1/RX2) through ST (GOF) or Versatile Link (POF) connectors. The cards plug
into any serial communication slot (slots 1 through 8) on the D400.
Configuration options
The Fiber Optic Serial card supports the following configuration options for each channel:
•
Standard state
•
Inverted state
The state for each channel is selectable via a single two-position pin switch
SW1
on the
Fiber Optic Serial card.
Follow instructions for setting the switch to select the appropriate state for each channel.
NOTE
The fiber optic channel settings on the D400 must match the set up of the other end of the
fiber optic communications channel.
Factory default
The factory default setting is
Standard
state on each channel.
Switch SW1 configuration
Switch
SW1
controls the state of each fiber optic channel. The switch contains four two-
position pins that can each be set to
A
or
B
to select the appropriate state.
Table 7: Fiber Optic Serial Card Switch SW1 Settings
NOTE
In Standard state fiber is lit when a “1” is transmitted. In Inverted state fiber is lit when a “0”
is transmitted.
State Option
SW1 Switch Position
1
2
3
4
Standard (default)
B
A
B
A
Inverted
A
B
A
B
