Interface - GE T60 Instruction Manual

3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS
The following figure shows configuration for the 2I and 2J fiber-laser module.
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a) DESCRIPTION
The following figure shows the 64K ITU G.703 co-directional interface configuration.
The G.703 module is fixed at 64 kbps. The SETTINGS > PRODUCT SETUP > DIRECT I/O > DIRECT I/O DATA
RATE setting is not applicable to this module.
NOTE
AWG 24 twisted shielded pair is recommended for external connections, with the shield grounded only at one end. Con-
necting the shield to pin X1a or X6a grounds the shield since these pins are internally connected to ground. Thus, if pin X1a
or X6a is used to ground the shield at one end, do not ground the shield at the other end. This interface module is protected
by surge suppression devices.
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Figure 3–35: 2I AND 2J LASER FIBER MODULE
Observing any fiber transmitter output can injure the eye.
When using a laser Interface, attenuators can be necessary to ensure that you do not exceed the
maximum optical input power to the receiver.
Figure 3–36: G.703 INTERFACE CONFIGURATION
T60 Transformer Protection System
3 HARDWARE
3.3.4 G.703 INTERFACE
GE Multilin