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TimeSource 3100 37
Engineering and Ordering
097-72020-01 Issue 9: November 2003
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Remote Oscillator Cabling
If 5 MHz signals from a DCD Shelf are used as remote oscillator inputs, a 5 MHz Isolator
Kit must be used between the DCD Shelves listed below and the TimeSource 3100 Shelf.
Refer to Field Service Bulletin FSB 098-40620-19R2 for details.
The 5 MHz Isolator Kit consists of the isolation module, associated screws, two 0.61 meter
long RG-59/U, 75 ohm coax cables, and two 1.83 meter lengths of 50 ohm cables. The 0.61
meter long cables have BNC connectors at both ends for connecting to all shelves except for
the DCD-419 (Rev. D or later), or SMB-to-BNC connectors for connecting to the DCD-419.
The isolation module is used to reduce potential noise coupling, and match impedances in
the cables between the DCD master shelf and TimeSource 3100. It also converts the 5 MHz
output from a square wave to a sine wave.
The isolation module is installed between the TimeSource 3100 Shelf and the DCD master
shelf. To connect between the module and the DCD Shelf, two 0.61 meter long RG-59/U, 75
ohm coax cables are provided.
If an isolator kit is not required, the following cable options are available:
• Remote oscillator cable kit (093-72001-01) includes:
- Remote oscillator cables (2) (160-00201-06)
- Right-angle BNC connector adapters (4)
• Remote oscillator cable (160-00201-06)
Shelf
Isolator Kit part #
DCD-ST2 093-45110-06
DCD-519 093-45110-06
DCD-419 093-45110-07
DCD-521 (not required with DCD-521/C) 093-45110-06
DCD-523 (backplane Revision D or earlier) 093-45110-06
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