Signalling Card E1 / T1 Selection - DataKinetics DSC110 User Manual

6.4 Signalling Card E1 / T1 Selection

All CS6 signalling cards are fitted with two small plug in daughter boards
designated 'LIU Selectors'. These can be plugged into three different positions
allowing different line impedance to be selected.
All boards with BNC connectors are shipped with the LIU Selectors in the E1 75
ohm position and they should not be moved by the user.
All boards with RJ45 connectors are shipped with the LIU Selectors in either the
E1 120 ohm position or the T1 position (depending on the part number used when
the board was ordered). The user may move the LIU Selector to the alternative
position to switch between E1 and T1 operation as required.
DataKinetics DSC110 / DSC210 User Manual Issue 12
LIU Selector
E1 E1
75 Ohm 120 Ohm
Align post with appropriate LIU type
Figure 6.3 LIU Selector
T1
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