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<A! Route and dress the timing input cable to the local BITS clock interface and connect per
To provide timing relays to one or more additional collocated E7-20 units, you can wire the
E7-20 external timing output interface as described below.
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9A! Get up to two 24 AWG shielded 2-wire cables of sufficient length to reach the next E7-
20 shelf. Use one cable to provide a single link (A only), or two cables for a redundant
Note: You can use the optional Calix-supplied BITS daisy-chain cable instead. See the
note after Step 4 for installation instructions.
*A! Strip approximately one inch of insulation from the wire ends.
:A! Wire the E7-20 external timing output as follows:
a.! Connect the timing wires to the E7-20 BITS OUT (A) output position:
!! Wrap the positive (tip) wire to the TIP+ pin.
!! Wrap the negative (ring) wire to the RNG- pin.
b.! To provide a redundant timing link to the next E7-20, repeat Step 3a to wire the E7-
20 BITS OUT (B) position, as required.
<A! Route and dress the timing output cable to next E7-20 and connect per the input wiring
Note: If you are using the Calix-supplied BITS daisy-chain cable, connect the WW Pins
Out end to the BITS OUT pins on the upstream E7-20 unit, and connect the WW Pins
In end to the BITS IN pins on downstream unit. Repeat for each additional daisy-
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