Panel Circuit Board Option - ADC HiGain HRU-402 User Manual

150-402-100-03
Table 2. Front Panel Component (Continued)
Name
Loopback (LPBK)
Control button
DS-1 Receive (RCV)
Level (LVL) Switch
Transmit Loss of
Signal (TLOS)
Loopback (LB)
Switch
DS-1 XMT and RCV
Bridging jacks
RS-232 Craft port
CLEI/ECI Bar code
label
Configuration
number label
Extraction handle
(a) If DS-1 signals are not detected, the ESF, SF, Bipolar with 8-Zero Substitution
and Alternate Mark Inversion (AMI) LEDs will not light.
(b) Any existing loopbacks are terminated before NREM loopback is activated.
(c) Default Setting.
HRU-402 List 1 and List 3
Function
Press the button for five seconds to activate a remote loopback
towards the Network Remote Loopback (NREM) state. The unit
can be unlooped by either pressing the LPBK control button in
again for five seconds or by the standard loopdown coded
messages.
Also provides the ability to control NREM.
Sets DS-1 RCV level.
0 sets the DS-1 receive level towards the CI to 0 dB.
-15 sets the DS-1 receive level towards the CI to a -15 dB.
Enables (ENA) or Disables (DIS) TLOS loopback option.
Disables the TLOS option.
Enables the TLOS option.
Provides bridging test and monitor access jacks to the CPE DS-1
interface. Provides both monitor and test access capability.
See Figure 4 for circuit details.
Provides bidirectional communication between the unit and an
external maintenance terminal through an RS-232 interface to
allow configuration and performance monitoring through the
Maintenance Terminal menus. See the section
Terminal Emulator" on page 23
Contains human-readable Common Language Equipment
Identifier (CLEI) code number and Equipment Catalog Item (ECI)
bar code number.
Contains either a five-digit or six-digit warranty configuration
number or a standalone two or three-digit configuration number
as follows:
Digit 1 = Last digit of shipment year
Digits 2 and 3 = Shipment month
Digits 4 and 5 = Configuration number
Handle used to remove the HRU-402 from the remote enclosure.
November 5, 1998
(b)
(c)
for operating procedures.
Product Overview
(c)
"Connecting to a
(
B8ZS)
7