DXD/PTP/GPS User Manual (rev 2.10)
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18. Appendix
18.1 Appendix A: Installing the DXD/GPS
Installation should be performed carefully by a qualified person, using the usual precautions. To avoid electrostatic discharges,
be sure to ground yourself properly.
1. Disconnect power
2. Remove top cover
3. Connect the provided ribbon cable to the connector on the DXD/GPS board (A)
4. Place PCB assembly inside the chassis so that the SMA connector protrudes through the rear panel hole labeled ANT
5. Line up the 2 holes on the mounting bracket with the 2 holes on the bottom of the chassis and secure the
assembly with the 2 provided screws
6. Connect the other end of the ribbon cable to J23, the GPS connector on the motherboard (B) - J23 is the
designator number on both DXD-8 and DXD-16 PCB.
As always with ribbon cables, make sure the connectors are properly oriented do that the ridge on the plug goes
into the slot in the wall of the socket.
Note that some early DXD-16 (s/n 1001-1047) may require a small modification to install the DXD/GPS, documented in TB121.
18.2 Appendix B: Installing the DXD/OCXO
Installation should be performed carefully by a qualified person, using the usual precautions. To avoid electrostatic discharges,
be sure to ground yourself properly.
1. Disconnect power from the unit
2. Remove the top panel
3. Place the OCXO board as indicated on the photos below with the word FRONT facing the front of the unit and
line up the 2 headers with the connectors on the main PCB. Lower the pins into the connector.
A
B
