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C
OMPATIBILITY
The H4TU-R-402 List 1 remote unit is compatible with ADC H4TU-C List 1 and
H4LXC Version A line units, and H4D-409 doublers. For information on HDSL4 line
units and the HD4 doubler unit, refer to the applicable document.
ADC publications, including this document (LTPH-QI-1033-04), can be
downloaded from the ADC website at www.adc.com . To order printed
copies, please contact your sales representative.
I
NSTALLATION
1
Set the S1 switches (SCURR and LPWR), located adjacent to the card-edge
connector, as follows:
Disable (default)
Enable
Line power (default) Configures the H4TU-R-402 to receive power from the upstream line unit
Local power
2
Align the HRU with the enclosure slot guides, then push the unit in until it is
properly seated in the backplane.
To comply with the intrabuilding wiring requirements of GR-1089
CORE, Section 4.5.9., the shield of the ABAM-type cables that
connect the H4TU-R-402 List 1 DS1 output ports to the cross-connect
panel must be grounded at both ends.
H D
S L
4
L
H4TU-R-402
A L
M
L P
1
L P
2
E S
F
S F
B 8
Z S
A M
I
D
L B
S
K
1
IN
B R
G
O U
T
RS -2
32
D C
E
SCURR and LPWR Switch Settings
Disables the flow of simplex sealing current from the upstream unit.
Enables the flow of simplex sealing current from the upstream unit.
over the HDSL pairs.
Configures the H4TU-R-402 to receive power from a local -48 Vdc supply. If
local power is not present, the HRU reverts to line power mode.
LPWR
switch
DIS
ENA
Remote enclosure
Þ
Continued
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