Alcatel MDR-8000 User Manual page 70

Microwave digital radios
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MCS-11 Repeater-to-Spur Daisy Chain Connection (J308/J309)
3.15.5.2
MCS-11 must be provisioned
XMT, RCV, and OUTPUT clocks. If an external modem is being used,
provision MCS-11 for
XMT, RCV,OUTPUT clocks and all MCS-11 clocks must now be pro-
vided by the external modem.
Multiple radios at a site can be provisioned and connected to operate
using a common XMT and RCV clock. In this scenario, one radio is
provisioned to supply the clocks. All other radios are provisioned to
sync off the supplied clocks. Provision the radio supplying the clocks
J308 Output Clock
.
Clock
MCS-11 connector J308/J309 is typically used to connect a repeater to a spur or multiple
spurs in a daisy chain system configuration. Either repeater shelf 1 or repeater shelf 2 may
feed the spur shelf. The first connection out of the repeater must be crosswired from J308
to J308. Then, every shelf from the spur must be wired 1:1, J309 to J308, in a daisy-chain
fashion.
CROSSWIRED CABLE ASSEMBLY – Recommended connectorized cable assembly – PN
695-7837-001 through -005 (26 AWG 8 pair shielded, jacketed cable with 15-pin D-type
connector on each end). See Figure 3 - 22 for shelf connector J308 location and pinout. See
Figure 3 - 22 for shelf connector J309 location and pinout. Refer to Table 3 - 9 for J308 to
J308 mating cable pinout and color code. See Figure 3 - 21 for typical connection scheme.
DAISY CHAIN CABLE ASSEMBLY – Recommended connectorized cable assembly – PN
695-7837-021 through -025 (26 AWG 8 pair shielded, jacketed cable with 15-pin D-type
connector on each end, wired 1:1.) Refer to Table 3 - 10 for J309 to J308 mating cable pinout
and color code. See Figure 3 - 21 for typical connection scheme.
3-32
Note
MCS-11 J310 Master/Junction
MCS-11 J310 Modem
Note
. Provision all other radios at the site
to enable
. This selection disables
J308 Input

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