EXFO MAX-800 Series, Руководство пользователя

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Test Setup - Test Configurator, Timer, and System
88
MAX-800 Series
Clock
Clock
Allows the configuration of the clock synchronization. Only available on
MAX-860G using 10G WAN interface and on MAX-880.
From the
Test
menu, tap
Setup
,
Test Configurator
, and tap on the clock
block.
Clock Synchronization
Clock Mode allows selecting the clock source that will be used for
transmission (TX).

Internal : Internal clock of the unit (STRATUM 3).

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 114).

External : Clock signal from the EXT CLK port. Only available on
MAX-880 model.
Ext Clock In
Note:
Available on MAX-880 model only and when the Clock Mode is set to
External .
Allows setting the external clock for test synchronization.

Interface Type allows the selection of the clock interface:
DS1
(default),
E1
,
2MHz
, or
1PPS
.
1PPS
is automatically selected in
One-Way Latency measurement mode for Dual Test Set .
Ext Clock In
on a green background indicates that a valid clock is
received.
LOS
on a red background indicates that the received clock is not valid.