ADC H2TU-C-202 List 4E Quick Installation page 6

C
ONFIGURATION
The H2TU-C-202 List 4E does not have a display or MODE and
SEL pushbuttons. Set the switches on the on-board switch
bank or access the maintenance terminal screens through the
craft port to make configuration changes.
The H2TU-C-202 List 4E has a configuration switch bank containing eight switches
(located on the printed circuit card). The switches are shown in the figure below and are
described in the Switch Descriptions table.
Leftmost Switch Position Options
Sets the equalizer to 133 to 265 feet
Sets the equalizer to 266 to 398 feet
Sets the equalizer to 399 to 532 feet
Sets the equalizer to 533 to 655 feet
Selects the DSX-1 line code Alternate Mark
Inversion (AMI)
Enables the Loopback Timeout (LBTO) for
120 minutes
Enables Fractional T1 (FT1) loopback
capability
Configures the system for Local powering
(a) Only one of the DSX-1 line equalization switches (1 - 4) can be selected at a time. If more than one switch
is enabled, the lowest value setting has priority.
Copies of this publication or the H2TU-C-202 List 4E technical practice
(LTPH-TP-1099-xx) can be downloaded from the ADC website at www.adc.com. To order
a hard copy, please contact your sales representative.
Switch Descriptions (default values in bold)
Switch
Rightmost Switch Position Options
Number
(a)
1 0
(a)
2 0
(a)
3 0
(a)
4 0
5 Selects Bipolar with 8-Zero Substitution
(B8ZS)
6 Disables LBTO
7 Disables FT1 loopback capability
8 Configures the system for Span powering