Installation; Faceplate Features; Deployment Guide; Figure 2. Hdsl Deployment Guidelines - ADTRAN T200 Installation And Maintenance Manual

There are no manual option settings on the HRE.
HRE operating power is derived from an HTU-C,
independent of line impedance or wire gauge. The
operating power from the HTU-C is also used to span
power the Low Voltage HTU-R.
Span power provided by the HTU-C to span power
the Low Voltage HRE and Low Voltage HTU-R is
less than -140 Vdc or -190 Vdc if used in dual HRE
applications. The span powering voltage is within
limits of Class A2 voltages as defined by Bellcore
GR-1089-CORE.
The HRE operates at line losses up to 35 dB at
196 kHz, in both directions from the extender and
regenerates the 2B1Q signals to meet the transmitted
power spectrum of Bellcore TA-NWT-0001210.
Revision History
This is the first issue of this practice. In subsequent
issues, changes will be summarized in this paragraph.

2. INSTALLATION

C A U T I O N C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
After unpacking the unit, inspect it for damage. If
damage is noted, file a claim with the carrier, then
contact ADTRAN. See Warranty and Customer
Service.
The T200 Low Voltage HRE Encapsulated does not
require mounting in a repeater apparatus case.
Because it is encapsulated in a polyurethane
compound, this device is weatherproof and can be
mounted on a pole, in a pedestal, in a manhole, or
other suitable location.
Compliance Codes
Table 1 shows the Compliance Codes for the T200
HRE. The T200 HRE complies with the requirements
covered under UL 1950, Third Edition, and is
intended to be installed in an enclosure with an
Installation Code (IC) of "B" or "E."

Table 1. Compliance Codes

Code
Power Code (PC)
Telecommunication Code (TC)
Installation Code (IC)
2

3. FACEPLATE FEATURES

The ADTRAN Low Voltage HRE faceplate has five
tricolored LEDs and one single color LED indicating
different states of the HDSL circuit. Table 2 explains
the meaning of the different LED indications.
4. DEPLOYMENT GUIDELINES
The ADTRAN HDSL system is designed to provide
DS1-based services over loops designed to comply
with Carrier Service Area (CSA) guidelines. CSA
deployment guidelines are given below.
This deployment criteria is summarized in the chart
shown in Figure 2.
Input Output
C C
X X
A –
61246041L3-5, Issue 1
1. All loops are non-loaded only.
2. For loops with 26-AWG cable, the maximum loop
length including bridged tap lengths is 9 kft.
3. For loops with 24-AWG cable, the maximum loop
length including bridged tap lengths is 12 kft.
4. Any single bridged tap is limited to 2 kft.
5. Total bridged tap length is limited to 2.5 kft.
6. The total length of multi-gauge cable containing
26-AWG cable must not exceed:
26
12 - {(3*L )/(9 - L
26
L = Total length of 26-AWG cable
excluding bridged taps (in kft)
BTAP
L = Total length of all bridged taps (in
kft)
12
11
INVALID HDSL CABLE LENGTHS
10
9
2.5
8
7
6
5
4
3
2
VALID HDSL CABLE LENGTHS
1
0
0 1 2 3
WORKING LENGTH OF 26 GAUGE CABLE (KFT)

Figure 2. HDSL Deployment Guidelines

BTAP
)}(in kft)
TOTAL
BRIDGED
TAP
2.0
1.5 LENGTH
1.0
(KFT)
0.5
0.0
4 5 6 7 8 9
61246041L3-5A