ADC HRU-419 HiGain, Руководство пользователя

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Installation 150-419-100-03>
16 September 25, 1998 HRU-419 List 1
T
HE
HRU-419 C
IRCUIT
B
OARD
The HRU-419 has four user options located on the circuit board, three that are
set using two-position switches (JP2, JP3 and JP4), and one set by the
connection and positioning of a jumper block header (JP1) as shown in
Figure 7 on page 17 .
Table 6. HRU-419 Card Edge Connector Pinouts
Pin (*) Signal Description Pin (*) Signal Description
A DS1_T_TIP DS1
Transmit Tip 1 DS1_T_RING DS1 Transmit
Ring
B DS1_R_TIP DS1 Receive
Tip 1 2 DS1_R_RING DS1 Receive Ring
E 5 CIRCUIT GND Circuit Ground
F HDSL_TIP_A HDSL Loop
1 (Tip1) 6 HDSL_RING_A HDSL Loop 1
(Ring1)
J CHASSIS_GND Chassis
Ground 8 EXT -48V -48 V External
Power
K HDSL_TIP_B HDSL Loop
2 (Tip) 9 HDSL_RING_B HDSL Loop 2
(Ring)
(* )All other pins are not used.
The HiGain system also has several special loopback (SPLB)
options that are set at the HLU. Refer to the specific HiGain
line unit technical practice for more details.