EXFO Power Blazer 88000 Series, Руководство пользователя

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Test Setup - Test Configurator, Timer, and System
148
88000 Series
Clock
Clock
Allows the configuration of the clock synchronization.
From the Test menu, tap Setup , Test Configurator , and tap on the clock
block.
Clock Synchronization
Clock Mode
allows selecting the source clock that will be used for
transmission (TX).

Internal
: Internal clock of the unit (STRATUM 3). The clock mode
is forced to Internal for Multi-Channel OTN.

Recovered
: Line clock from the input port signal involved in the
test. Available with Transport test applications, CPRI/OBSAI RRH,
and Ethernet applications using 10G WAN. The clock mode is
forced to
Recovered for 1GE electrical interface using Slave local
clock (see
Local Clock
on page 185).

External : Clock signal from the EXT CLK port.

Backplane
: Clock from another module on the platform (only
supported on FTB-2 and FTB-2 Pro platforms). The other module
must support the backplane clock feature and must be enabled.
Not available when the
Backplane Clock check box is selected
(see page 153). The Backplane clock cannot be shared between
FTB- and FTBx- modules.
Note:
For CPRI/OBSAI Base Station single port topology, the clock is configurable
to
Internal or External ; for CRPI/OBSAI Remote Radio Head, the clock is
fixed to Recovered ; for CPRI dual port topology, the clock block is not
displayed and the clock mode is automatically set to Internal for the Base
Station and Recovered for the Remote Radio Head.