Specifications

Watson-TDM-Manual-W.doc
Version 2.0-01
Watson TDM
Operating Manual
Revision: 2008-02-07 9-41
9.6 Power and Grounding Connectors
9.6.1 Tabletop Power Connector
Type: Molex Minifit Junior, safety approved connector to the mains adapter with
snap-in characteristic. It is suitable for connection to the power supplies
SZ.378.0A0.V1 and SZ.378.0A0.V2EA.
Pin Signal Description
1 -PWR Negative power supply terminal for mains adapter
2 PROT Connected to the center taps of the gas absorbers at the DSL
line input
3 NC Not connected
4 +PWR Positive power supply terminal for mains adapter
9.6.2 Ground connector
The tabletop modems are fitted with a ground connector. To reach overvoltage
protection according to ITU-T K.21 enhanced level this connector must be
grounded. Without ground connection protection level according to ITU-T K.21
basic level is achieved.
The connector is normally covered by the rear panel of the housing. To get ac-
cess to the connector a hole has to be cut in the rear panel around the indicated
marks e.g. using a paper cutter:
Ground Connector covered
Cutout hole removed
The connector type is Faston 4.8 x 0.5 mm connector (DIN 46244) The hole in
the rear panel is dimensioned for non-insulated Faston ferrules (DIN 46245).
Molex-Type Power Connector
Front View
4 3
2 1