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CHAPTER 3: INSTALLATION
DIRECT INPUT AND OUTPUT COMMUNICATIONS
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
3-29
3
Figure 3-30: 2I and 2J laser fiber modules
3.4.4 G.703 interface
3.4.4.1 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.
AWG 24 twisted shielded pair is recommended for external connections, with the shield grounded only at one end.
Connecting the shield to pin X1a or X6a grounds the shield since these pins are connected internally 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.
Figure 3-31: G.703 interface configuration
The following figure shows the typical pin interconnection between two G.703 interfaces. For the actual physical
arrangement of these pins, see the Rear Terminal Layout section earlier in this chapter. All pin interconnections are to be
maintained for a connection to a multiplexer.
CAUTION
Observing any fiber transmitter output can injure the eye.
NOTICE
When using a laser Interface, attenuators can be necessary to ensure that you do not exceed the
maximum optical input power to the receiver.
2 channels
Tx1
Tx2
Rx1
Rx2
831827A1.CDR
2I and 2J
modules
842773A3.CDR
~8a
~8b
7S
Rx +
Tx +
Shield
Tx –
Shield
Rx –
Tx –
Rx +
Tx +
Rx –
G.703 communications
~2b
~6a
~7a
~1b
~1a
~3a
~6b
~7b
~2a
~3b
G.703
channel 2
G.703
channel 1
Surge
Surge
Содержание L60
Страница 130: ...4 30 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL LOGIC DIAGRAMS CHAPTER 4 INTERFACES 4 ...
Страница 464: ...5 334 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 498: ...7 10 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 570: ...10 14 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL DISPOSAL CHAPTER 10 MAINTENANCE 10 ...
Страница 582: ...A 12 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 588: ...C 4 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL REVISION HISTORY APPENDIX C MISCELLANEOUS C ...
Страница 592: ...iv L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...