D
D-4 Flex Max901e 1GHz Trunk and Bridger Amplifiers 1502154 Rev D
Installing Plug-in Accessories
Upgrade Information
While SEQ-1G and SCS-1G plug-in accessories will address all bandwidths up to 1GHz, you may
wish to reuse your current equalizers and cable simulators until you expand your system to
1GHz.The following plug-in accessory information applies to all FlexNet 700, 800, and 900 series
upgrades. Please note:
■ SPB series PADs cannot be used. NPB series PADS are required.
■ MEQ return equalizers can be used.
■ All SEQ-750 and SEQ-862 series equalizers (with and without covers) can be used.
■ While the Flex Max901e trunk amplifiers are designed for 1GHz operation, they can be
configured for use as spares in existing 750 or 870MHz systems. Refer to Power Supply
Configuration beginning on page 5-3 for the appropriate plug-in accessories and locations
for 1GHz or 750/870 operation.
Equalizers are keyed so they can only be installed one way. The Flex Max901es may have factory
installed jumpers that provide a continuous signal path across accessory plug-in areas. The two
types of jumpers include:
■ soldered-in jumpers
■ removable jumper wires
Before installing any accessories, these jumpers/jumper wires must be removed. Soldered-in
jumpers must be cut from the motherboard (see Soldered-in Jumper Removal on page D-5 for
instructions), while removable jumper wires can be pulled out. When the jumpers/jumpers wires are
removed, use an NPB-000, SEQ-0, or SEQ-1G-00 where appropriate to provide continuity (zero
loss) for the signal path.
Note Installing and removing plug-in accessories disrupts customer service.
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