Section 150-441-124
June 12, 1997
Revision 01
Page 30
PairGain Engineering - Plant Series
HiGain HLU-D41
18.14
Signaling.
The Signaling option can be set to RBS, CLR, or MIX. The default setting for all
channels is CLR.
1
Press <N> in the System Settings menu.
The following prompt appears:
ENTER CHANNEL NUMBERS
2
To change channels from CLR to RBS, enter the channel’s number (ranging from 01 through 12).
You can only enter channel numbers ranging from 0 through 12 for which you have entered the
correct bandwidth increment using the DS0 BANDWIDTH option in Section 18.13.
18.14.1
Configuring Channels.
The number of channels used by the selected bandwidth are displayed in
sequence, as 01, 02, 03, 04, 05..., on the Maintenance Terminal menu. The selected signaling mode
is indicated beneath each channel. Whenever the bandwidth is increased in size, the newly activated
channels are initialized to CLR.
18.14.2
Multiple channels may be changed by inserting a space between each channel entry. Channels
configured as RBS are marked with rb whereas channels configured as CLR are not marked. To
change a channel back to CLR, select the N option and enter the channel number(s) again. The rb
mark disappears from the selected channels indicating a CLR status.
Some D4 channel banks require their option
H to be enabled to support the HLU-D41’s
RBS signaling mode.
19. Loopback Mode
19.1
Press <D> from the Maintenance Terminal Main menu to open the Loopback Menu screen (see
Section 24 for a diagram of the HiGain FT1 loopback configuration).
The following screen appears:
19.2
This screen shows loopback selections for a single doubler system. Each of the modules in the
configuration can be looped back towards the network or the customer from this screen. NDU1 and
CDU1 are available for single doubler applications. NDU2 and CDU2 are available for two doubler
