System Maintenance Menu Screens; Non-Doublers - ADC HiGain HLU-200 User Manual

Table 19. HLU-200 GNLB Test Procedures Using HiGain Doublers
Step
1 Have the CO tester send the HRU-412 (3-in-7) inband loop-up code for five seconds. Observe
that an HRU NREM loopback is in effect (Figure 8). The loopback state is indicated in the Span
Status display screen, and by the Green Loop LED on the front panel.
2 Have the CO tester transmit a T1 test signal into the HLU-200 List 1D and verify that the returned
(looped) signal is error free.
3 If the above test fails, have the CO tester transmit the (3-in-5) inband loop-down code.
4 Have the CO tester send the HLU-200 List 1D (4-in-7) inband loop-up for five seconds. Observe
that a NLOC HLU-200 List 1D loopback is in effect. The green front panel Loop LED should
light.
5 Repeat Step 2. If the test passes, the problem is in the downstream direction. If it fails, the
problem is in the upstream direction.
6 The HLU-200 List 1D can be looped-up from the remote location (CREM) by issuing the (6-in-7)
command at the HRU-412 DS1 input port.
7 The HRU-412 can be looped-up from the remote location (CLOC) by issuing the (5-in-7)
command at the HRU-412 DS1 input port.
8 Doubler #1 can be looped toward the CI from the remote location (CDU1) by issuing the (4-in-6)
loopback command at the HRU-412 DS1 input port.
9 Doubler #1 can be looped toward the CBA from the HLU location (NDU1) by issuing the (2-in-6)
loopback command at the HLU-200 List 1D DS1 input port.
10 Doubler #2 can be looped toward the CI from the remote location (CDU2) by issuing the (5-in-6)
loopback command at the HRU-412 DS1 input port.
11 Doubler #2 can be looped toward the CBA from the HLU location (NDU2) by issuing the (3-in-6)
loopback command at the HLU-200 List 1D DS1 input port.

System Maintenance Menu Screens

Non-Doublers

Figure 9 is the Maintenance Terminal MAIN MENU Screen. Its eight sub-menus provide many useful
provisioning, test and monitoring tools. Figure 10 shows the HLU-200 List 1D SPAN STATUS Screen. The
DS1 STATUS fields in the HLU column are not supported and should be ignored.
Figure 11 shows the SET CLOCK menu. 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. HRU-412 units using 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 12 shows the SYSTEM SETTINGS Screen. All 13 user options can be set from this screen. To change
any option, enter its character key that is shown inside the parenthesis within each parameter description. This
causes the screen to refresh with the new parameter. After all parameters have been selected, press E (Exit)
then C (Confirm). The newly selected parameters are now activated.
Figure 13 shows the LOOPBACK MENU Screen. Loopbacks NLOC, NREM, CLOC and CREM are available.
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Action
November 22, 1996
150-200-114-03, Issue 03
HLU-200 List 1D