VeEX MPA, Руководство пользователя

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SONET Tab
280
Line Frequency
Offset Adjusts the offset of the signal frequency of the transmitted
signal, in parts per million (ppm).
The Line Frequency Offset can be set as a Static value, with
a frequency offset value ranging from -300.0 to 300.0 , in
increments of 0.1 PPM. A value of 0 (zero) equals Off .
The Line Frequency Offset can also be configured for Ramp
mode . Select the Ramp Frequency Offset Mode checkbox
to enable Ramp mode, and deselect the checkbox to disable
Ramp mode.
•
In Ramp mode, the line frequency offset will
continuously increment and decrement from one user-
defined Offset Peak to second user-defined Offset
Peak, each ranging from -300.0 to 300.0 PPM's.
•
A user-defined Step Size can be set (in PPM's), and a
user-defined Step Duration (in Seconds) can also be
configured.
Use the keypad to enter the offset frequency parameters.
The Line Frequency Offset setting is only available when
the Clock Reference is set to Internal timing.
Initial Laser Setting Controls whether the laser is on or off when the unit is turned
on.
The following options are available:
•
Off - The unit's laser will be off when the unit is turned
on.
•
On - The unit's laser will be on when the unit is turned
on.
•
Restore Previous State - When the unit is turned on,
the laser will be on or off based on its previous setting
before the unit was turned off.
MPA_e_manual_D07-00-129P_RevA00