ADCP-75-114 • Issue C • June 2001
1.8 User Interface
The RIU user interface consists of the various connectors, switches, terminals, and LED that
are provided on the RIU front panel. The RIU user interface points are indicated in Figure 3
and described in Table 1.
(1) ANTENNA
CONNECTOR
NOTE: SHOWN WITHOUT
CABLE MANAGEMENT TRAY
REF
USER INTERFACE
No.
DESIGNATION
1
ANTENNA
2
I/O
3
POWER
4
REV LEVEL ADJ
MSB
5
FWD LEVEL ADJ
MSB
6
FORWARD OUT
7
REVERSE IN
8
ALARMS
9
MINOR
Page 4
© 2001, ADC Telecommunications, Inc.
(2) AC POWER
ON/OFF SWITCH
(3) AC POWER CORD
CONNECTOR
Figure 3. Remote Interface Unit User Interface
Table 1. Remote Interface Unit User Interface
DEVICE
N-type female RF
coaxial connector
I/O rocker switch/
circuit breaker
3-wire AC power
cord connector
Rotary switch
LSB
Rotary switch
LSB
N-type female RF
coaxial connector
N-type female RF
coaxial connector
Multi-colored LED
(Red/Green/Yellow)
MAJOR
Screw-type terminal
connector (14–26
AWG)
(4) REVERSE LEVEL
(6) FORWARD
ADJUSTMENT
RF OUTPUT
SWITCHES
CONNECTOR
(5) FORWARD LEVEL
(8) ALARM LED
ADJUSTMENT
INDICATOR
SWITCHES
FUNCTIONAL DESCRIPTION
Used for connecting the donor antenna
coaxial cable.
Provides AC power On/Off control and AC
power over current protection.
Used for connecting the AC power cord.
Used to adjust the reverse path RF signal
level by adding or removing attenuation.
Used to adjust the forward path RF signal
level by adding or removing attenuation.
Used for connecting the RIU to DHU
forward path coaxial cable.
Used for connecting the DHU to RIU
reverse path coaxial cable.
Indicates if the RIU is normal or faulty. (see
Section 3 for a detailed description)
Used for connecting the RIU to an external
alarm system. Includes normally open (NO),
normally closed (NC), and common (COM)
wiring connections.
(7) REVERSE
RF INPUT
CONNECTOR
16651-A
(9) ALARM
CONNECTOR
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