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2.4.1 RECOMMENDED SET-UP STEPS
The recommended steps for setting up the NSU are highlighted below:
•
Place NSU into Local Control mode.
•
Place NSU in Manual mode.
•
For an NSUN Set the Switch Module push wheel, located on the rear of the switch
module to the proper address for the primary position it occupies.
•
Set the converters to the recommended remote settings.
•
Set NSU-Converter Serial Link enable/disable option for each chain position.
•
For any converter that NSU-Converter Serial Link is disabled set converter settings
in NSU.
•
Connect all of the Switch Modules to the NSUN.
•
Connect all of the converters to the NSU.
•
On the Redundancy Chain Status screen verify that the lower line for each converter
position in the chain reports “ST”, “st”, “ON”, or “on” and is not blinking.
•
Place all converters into Remote control mode.
•
Press the “AUTO” indicator button it should light green to indicate Auto mode and the
Primary converters should be Online and the Backup should be in Standby.
•
Press the “AUTO” indicator button again. It should no longer be lit indicating the NSU
is now in Manual mode.
•
Follow the next three steps for setting the Gain Equalization for each chain position.
•
Apply an input signal to the Primary converter and measure the output signal
level of the chain position.
•
From the Redundancy Chain Status screen place the Primary converter into
Standby and the Backup converter Online in its place.
•
Apply an input signal to the Backup converter and from the Converter Settings
Subscreen for that chain position adjust the Gain Equalization until output level is
consistent with the measurement made on the Primary Converter.
•
Follow the next four steps for setting the Slope for each chain position.
•
From the Redundancy Chain Status screen place the Primary converter Online.
•
Apply an input signal to the Primary converter and measure the response of at
the output. If the Primary converter is so equipped adjust the slope setting
on
the Primary converter
to achieve the desired response at the output.
•
From the Redundancy Chain Status screen place the Primary converter into
Standby and the Backup converter Online in its place.
•
Apply an input signal to the Backup converter and from the Converter Settings
Subscreen for that chain position adjust the Slope setting
on the NSU
until
output response is consistent with the measurement made on the Primary
Converter.
•
From the Converter Settings Subscreen for each chain position set the Priority
•
If using a polarization switch, from the Converter Settings Subscreen for each chain
position, Backup first, set the polarization of each converter.
•
From the Converter Settings Subscreen for each chain position verify that the
settings reported by the NSU are correct and match the settings of the Primary
converters.
•
Check the Status screen by pressing the “STATUS” indicator to be sure there are no
Active Faults.