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Configuration 73
Model 3088 Series User Manual B • Specifications
Term (Green)
The Term LED glows solid under the following circumstances:
• 3088/CA with V.35 interface: If the serial interface has asserted DTR
• 3088/D with the X.21 interface:
- Configured as DCE: Indicates that the “Control” signals have been asserted.
- Configured as DTE: Indicates that the “Indication” signals have been asserted
TM/ER (Red)
The Test Mode/Error (TM/ER) LED is used to indicate that a test mode is in progress or an error has been
detected. It blinks once every second while a test mode is starting. It glows solid while a test mode is in
progress. It blinks once if an error is detected either during a test mode, or in normal DSL operation.
Configuration
Configuration is done with either externally accessible DIP switches, CLI or through the EOC (Embedded
Operations Channel) from a Model 3096RC G.SHDSL concentration card.
Power and power supply specifications
The NTU comes with either an AC or DC power supply:
• The supply’s connection to the NTU is a 2.5 mm barrel receptacle with the center conductor positive.
• There is one fuse in the equipment rated at 250V, 500 mA, 2 sec.
• Rated voltage: 5 VDC
• Rated current: 1 A DC
Figure 27. Power connection barrel receptacle 5 VDC diagram
External AC universal power supply
• Output from power supply: 5 VDC, 2A
• Input to power supply: universal input 100–240 VAC 50/60 Hz 0.3A
The external AC adaptor shall be a listed limited power source
that incorporates a disconnect device and shall be positioned
within easy reach of the operator. Ensure that the AC power
cable meets all applicable standards for the country in which it is
to be installed, and that it is connected to a wall outlet which has
earth ground.
5 VDC
CAUTION