Doublers - ADC HiGain HLU-200 User Manual

150-200-114-03, Issue 03

Doublers

Figure 17 is the Maintenance Terminal MAIN MENU Screen. Its eight sub-menus provide many useful
provisioning, test and monitoring tools.
Selection "H" from the MAIN MENU Screen allows the Circuit ID# to be set. It is limited to 24 alphanumeric
characters. It, like the system settings, is stored in NVRAM and thus remains when power is lost. Note that the
Circuit ID# is not available at the HRU-412 Maintenance Port.
Figures 18 through 21 show the HLU-200 List 1D SPAN STATUS screens for Twin Doubler applications. The
SPAN 1 Screen contains data on the two HDSL loops between the HLU-200 List 1D and the first Doubler. The
SPAN 2 Screen refers to the loops between the first Doubler and the HRU-412 for single-Doubler circuits or
between the first and second Doublers for two-Doubler circuits. The SPAN 3 screen refers to the loops
between the second Doubler and the HRU-412 for two-Doubler circuits. All status screens contain the same
DS1 interface information.
Figure 22 shows the SET CLOCK Menu Screen. Both the Time and Date are set with this menu. Set the hours
and minutes, using the military (24-hour) convention. Setting the seconds is optional. Enter the date in the
sequence and format shown. List 1 HRU-412 units having software versions 6.4 and above, and all List 6, List
7 HRU-412 units can also be set to the same time and date as the HLU-200 List 1D by entering a U to the
"Update Remote" query. All time information is lost when power is removed. The last date, however, is
retained in NVRAM and reappears when power is restored.
Figure 23 shows the SYSTEM SETTINGS Menu Screen. All 13 user options can be set from this screen. To
change any option, enter its character key which is shown inside the parenthesis within each parameter
description. This causes the screen to refresh with the new. After all parameters have been selected, press E
then C. The newly selected parameters are now activated.
Figure 24 shows the LOOPBACK MENU Screen for a two-Doubler system. Each of the four modules can be
looped back towards the network or the customer from this screen. NDU2 and CDU2 are not available for
single Doubler applications and only NLOC, NREM, CLOC and CREM are available for non-Doubler
applications.
Figures 25 through 28 show the PERFORMANCE DATA screens for Doubler applications. Both the Errored
and Unavailable Seconds for both HDSL loops and each T1 input are listed at 15-minute intervals over a four
hour time interval. The SPAN 1 Screen contains data on the two HDSL loops between the HLU-200 List 1D
and the first Doubler (HDU1). The SPAN 2 Screen refers to the loops between the first Doubler (HDU1) and
the HRU-412 for one Doubler circuits or between the first and second Doublers (HDU1 and HDU2) for two-
Doubler circuits. The SPAN 3 Screen refers to the loops between the second Doubler and the HRU-412 for
two-Doubler circuits. All status screens contain the same DS1 interface errors. Earlier and later data, in four-
hour chunks on six different screens per span, can be accessed by pressing P (Previous) or N (Next)
respectively. Performance data from the different spans can be accessed by entering S (Span). All of the
counters can be set to 0 by pressing C from the HLU-200 List 1D SPAN STATUS Screen shown in Figures 18
through 21. Note that since the HLU-200 List 1D is considered the master module, this clears all performance
data screens at both the HLU-200 List 1D and the HRU-412. The RS-232 terminal interface at the HRU-412
does not allow the counters to be cleared.
Figures 29 through 32 show the 7-DAY PERFORMANCE HISTORY screens for Doubler applications. The
"Errored Seconds" and "Unavailable Seconds" for both HDSL loops and each of the two DS1 inputs are listed
for the current and previous seven days. The SPAN 1 Screen contains data on the two HDSL loops between the
HLU-200 List 1D and the first Doubler (HDU1). The SPAN 2 Screen refers to the loops between the first
Doubler (HDU1) and the HRU-412 for one-Doubler circuits or between the first and second Doublers (HDU1
and HDU2) for two-Doubler circuits. The SPAN 3 Screen refers to the loops between the second Doubler and
the HRU-412 for two-Doubler circuits. All status screens contain the same DS-1 interface errors. All of the
counters can be set to 0 by pressing C on the HLU-200 List 1D SPAN STATUS Screen (Figures 18 through
21). Note that since the HLU-200 List 1D is considered the master module, this clears all performance data
50 November 22, 1996 HLU-200 List 1D