Vanguard Managed Solutions 6455 ユーザーズマニュアル
Hardware Description
2-33
Vanguard 6455 Option Cards
Figure 2-43. E1 Card Impedance Jumper Locations
The TRing (the coax
shield for the Tx pair) is
grounded directly.
shield for the Tx pair) is
grounded directly.
The Rring (the coax
shield for the Rx pair) is
grounded directly.
shield for the Rx pair) is
grounded directly.
This configuration
may be used with
certain unbalanced
75
may be used with
certain unbalanced
75
Ω
coax E1
networks.
Note
Use this configuration
only if the network
provider requests it.
The ITU requires this
setting.
only if the network
provider requests it.
The ITU requires this
setting.
The TRing (the coax
shield for the Tx pair) is
grounded directly.
shield for the Tx pair) is
grounded directly.
The Rring (the coax
shield for the Rx pair) is
grounded through a
decoupling capacitor.
shield for the Rx pair) is
grounded through a
decoupling capacitor.
This configuration
may be used with
certain unbalanced 75
ohm coax E1
networks.
may be used with
certain unbalanced 75
ohm coax E1
networks.
Note
This setting may be
required in Australia
and New Zealand.
required in Australia
and New Zealand.
Description
Use
Jumper Configuration
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx