Section DSA-WM2-140-202
030-101674 Rev. A
R
3
0803I2RA
47
From LEC* (In)
To LEC* (Out)
From LEC* (In)
To LEC* (Out)
R
DSAWM-214 Enclosure
T
J1 - J14
R1
T1
(RCV)
(XMT)
J15
To CPE (Out)
Figure 2. DSAWM-214 Application and Circuit Overview
DSAWM-214 Enclosure
Facility/Network Interface
DSAWM-214 Enclosure
CPE/Customer Interface
P2
P1
(RCV)
(XMT)
5
15
J1 - J14
Optional DSAWM-214 Application Using 50-Pin Amphenol Connectors and RJ48C Jacks
From CPE (In)
To CPE (Out)
Typical DSAWM-214 Application Using Wirewrap Pins on
Telco Termination Module
and RJ48H Connector
* LEC = Local Exchange Carrier
* LEC = Local Exchange Carrier
55
49
1
2
5
4
(RCV)
(XMT)
Customer Side
From CPE (In)
Telco
Term.
Module
CO Side
CO Side
Customer Side
7
13
41
5
15
55
49
XMT
RCV
Module
T1
R1
T
R
Module
47
7
13
41
CPE RCV
CPE XMT
FAC RCV
FAC XMT
CPE RCV
CPE XMT
FAC RCV
FAC XMT
T1
R1
T
R
R
T
R1
T1
Facility/Network Interface
CPE/Customer Interface
DSAWM-214 Enclosure
J16
HRU modules are typically designed to use local power from the
48 V battery if it is available to the shelf. The only connections
to TB1, the power and ground terminal block, in this mode of op-
eration, are the chassis ground (CHASSIS GND) and circuit
ground (CKT GND) connections.
3.1.2.2
Local Powering Mode
When local power mode is selected, TB1 on the Telco Termina-
tion Module provides screw terminals for 48 V battery (-PWR
position) and 48 V return (+PWR position). A separate, fused,
48 V battery feed is required. The total enclosure input current
depends upon the mix, quantity, and size of modules. The
DSAWM-214 can accept up to fourteen 200-type modules or
four 400-type modules. While the specific input current will be
determined from the above particular variables, some typical
conditions are discussed in the following sentences.
3.1.2.3
Current Using 200-MECHANICS Cards
The T1 NIU module operates at a constant current typically
0.06 amps per module. An enclosure equipped with fourteen
200-type NIU modules will require 0.84 amps. This current will
remain virtually constant over the battery range of 42 VDC to
56 VDC. The power dissipation and heat release will vary di-
rectly with the battery voltage.
3.1.2.4
Current Using 400-type Cards
The HDSL HRU module typically operates at constant power,
therefore the input current is larger at the 42 VDC battery
range. A 400-type HRU with 6.5 watts of heat release will re-
quire 0.155 amps per module or 1.1 amps at -42 VDC for seven
modules in an enclosure.
3.1.3
Ventilation
The DSAWM-214 requires a minimum of three inches of open
space immediately above and below the enclosure, and also 1-2
