GE T35 Instruction Manual page 56

3.3 DIRECT I/O COMMUNICATIONS
The following diagram shows the interconnection for three UR-series relays using two independent communication chan-
nels. UR1 and UR3 have single Type 7 communication modules; UR2 has a dual-channel module. The two communication
channels can be of different types, depending on the Type 7 modules used. To allow the direct input/output data to 'cross-
over' from Channel 1 to Channel 2 on UR2, the
forces UR2 to forward messages received on Rx1 out Tx2, and messages received on Rx2 out Tx1.
3
Figure 3–21: DIRECT INPUT/OUTPUT SINGLE/DUAL CHANNEL COMBINATION CONNECTION
The interconnection requirements are described in further detail in this section for each specific variation of Type 7 commu-
nications module. These modules are listed in the following table. All fiber modules use ST type connectors.
Table 3–3: CHANNEL COMMUNICATION OPTIONS
MODULE SPECIFICATION
TYPE
7A 820 nm, multi-mode, LED, 1 Channel
7B 1300 nm, multi-mode, LED, 1 Channel
7C 1300 nm, single-mode, ELED, 1 Channel
7D 1300 nm, single-mode, LASER, 1 Channel
7H 820 nm, multi-mode, LED, 2 Channels
7I 1300 nm, multi-mode, LED, 2 Channels
7J 1300 nm, single-mode, ELED, 2 Channels
7K 1300 nm, single-mode, LASER, 2 Channels
7L Channel 1: RS422, Channel: 820 nm, multi-mode, LED
7M Channel 1: RS422, Channel 2: 1300 nm, multi-mode, LED
7N Channel 1: RS422, Channel 2: 1300 nm, single-mode, ELED
7P Channel 1: RS422, Channel 2: 1300 nm, single-mode, LASER
7R G.703, 1 Channel
7S G.703, 2 Channels
7T RS422, 1 Channel
7W RS422, 2 Channels
72 1550 nm, single-mode, LASER, 1 Channel
73 1550 nm, single-mode, LASER, 2 Channel
74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER
76 IEEE C37.94, 820 nm, multi-mode, LED, 1 Channel
77 IEEE C37.94, 820 nm, multi-mode, LED, 2 Channels
OBSERVING ANY FIBER TRANSMITTER OUTPUT MAY CAUSE INJURY TO THE EYE.
CAUTION
3-20
DIRECT I/O CHANNEL CROSSOVER
Tx
UR #1
Rx
Channel #1
Tx1
Rx1
UR #2
Tx2
Rx2
Channel #2
Tx
UR #3
Rx
842013A1.CDR
T35 Transformer Management Relay
3 HARDWARE
setting should be "Enabled" on UR2. This
GE Multilin