ADC LPS-H4TU-C-L5 Quick Installation page 6

For more detailed information about the maintenance terminal
screens, refer to the Soneplex Shelf Controller Unit (SCU) V4.1 User
manual (LTPS-UM-8031-xx) and the line LPS-H4TU-C-L5 CO Line Unit
User Manual (LTPS-UM-8054-xx).
M
Copies of this publication or those listed above can be downloaded
from the ADC website at www.adc.com. To order printed copies,
please contact your sales representative.
L
OOPBACK
Initiate loopback testing from the maintenance terminal menus or by using inband codes.
The inband codes shown below can be sent by a test set. For more detailed information,
refer to the LPS-H4TU-C-L5 User Manual (LTPS-UM-8054-01).
LPS-H4TU-C
DS1 Signal
DS1
to
Network
1 2
DS1 Signal
from
Network
Table 2. Default Codes for Programmable Loopback Operations
Operation
Loopup LPS-H4TU-C
Loopup H4D1
Loopup H4D2
Loopup H4TU-R-402-5A
Loopdown (all units)
Loopup time-out disable
Pressing the CO loopback button for more than 5 seconds will initiate a simultaneous
network and customer loopback at the H4TU-R.
C
OMPATIBILITY
The LPS-H4TU-C is compatible with the H4TU-R-402-5A remote unit and H4D-409-L2
doublers. The table shows the various transmission distances possible with and without
doublers. For more information about the remote unit, refer to LTPH-QI-1254-xx; for the
doubler unit, refer to LTPH-QI-1120-xx.
H4D-409 List 2
Doublers
Number
0
1
2
T
ESTING
H4D
HDSL HDSL
HDSL4
4 3
loop
Default Binary Code
1101 0011 1101 0011
1100 0111 0100 0001
1100 0111 0101 0100
1100 0111 0100 0010
1001 0011 1001 0011
1101 0101 1101 0110
Table 3. HDSL4 System Transmission Distances
Maximum Transmission (distance in feet)
22 AWG Wire
21,000
41,600
62,200
H4D
HDSL HDSL
HDSL4
6 5
loop
Description
The signal is sent inband, activating a loopback at
the given unit. Unit goes from Armed to loopup
state.
The signal is sent inband, deactivating the loopback.
Unit goes from loopup state to Armed state.
Disables loopup time-out. Loopback stays active
until deactivation or disarm code is received.
24 AWG Wire
16,000
30,000
44,000
H4TU-R
HDSL HDSL DS1
HDSL4
7
loop
26 AWG Wire
DS1 Signal
to CPE
8
DS1 Signal
from CPE
S0274-A
12,000
23,000
34,000