Communication solutions for power utilities
UNIVERSAL POWER-LINE CARRIER SYSTEM TYPE OPU-1
WHOLE BAND QAM MODEM MBPU - Rev. 0 (July 2011)
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4 COMMISSIONING
This chapter deals with the functions of the elements accessible from the front plate as well
as the internal microswitches, switch and jumpers.
4.1 FRONT-PLATE
ELEMENTS
The front view of the module is shown in Figure 2. All the accessible elements are described
below, in a downward order and from left to right.
4.1.1 Optical
indicators
TD/103 LED
Green. Indicates data input and lights up when a logical level “0” is
applied.
RD/104 LED
Green. Indicates data output. This LED lights up when a logical
level “0” is received.
RTS/105 LED
Green. Indicates request to transmit and lights up when the signal
is in active state.
CTS/106 LED
Green. Indicates the modem is ready to transmit and lights up
when the signal is in active state.
DSR/107 LED
Green. Indicates the modem is working correctly.
DTR/108 LED
Green. Lights up when the state of the signal is active in the data
terminal.
DCD/109 LED
Green. Indicates the detection of line signals and lights up when
the level of the carrier is above a pre-set level. It goes out in the
opposite case.
OH LED
Green. When lit indicates line has been taken by the modem.
V.11 LED
Amber. This LED lights up when the modem has been configured
with interface V.11.
V.24 LED
Amber. This LED lights up when the modem has been configured
with interface V.24.
