User's Manual

Wideband Radio Head Overview
044-05251 Rev A 1-5
Figure 1-2 CU PCBA
Distribution PCBA (DIA)
The DIA is the core distribution PCBA on which all other PCBAs and units connect to in the cabinet with
the exception of the PA. A shielded metal frame on the DIA provides the mounting location for the CU,
ALI and RCIs, if used.
Figure 1-3 DIA PCBA
Low Noise Amplifier (LNA)
LNAs are used on the uplink and are located at the top of the cabinet and the high cover, if equipped.
All coaxial connectors are SMA-type. Signals from the DPX output are fed to the LNA input connector
IN. OUT1 and OUT2 outputs feed the WBAs of the same signal direction. The signal level in these
connectors are +20dB referenced to the antenna input. Another output, OUT LOW, is an expansion
output for an additional LNA if the WRH is equipped in the cover part of the chassis. The gain to this
connector is +2dB. The +7V input is used for +7V supply from the DIA PCBA and ATT is a control signal
for a controllable attenuator in the LNA.
Figure 1-4 LNA
Duplex Filter (DPX)
DPXs are located on the metal cover sheet in the upper part of the cabinet. Service and donor DPXs
are identical.
ALLGON INNOVATION
SWEDEN M105 R6
1
PARKING
FOR W5
W5
8
P27
W6B 10
1
P33
ALARM
P23
LNA
UP-LINK
P32
MODEM
A
U
X
1
P28
DOOR
5
9
6
1
1
16
1
1
M
-
>
S
P11
P34
8
9
15
P26
15 16
S
-
>
M
1
2
3
89
P
3
6
5
X0A
X0B
2
V2
1
16
P12 P13
1
1
1
16
16
16
P4
P5
P6
c
b
a
c
b
a
c
b
a
c
b
a
1P232
1
b
a
1
16P3
16
1
16
P14
1
V1
1
1
1
1
1
4
6
1
15
6
9
15
2
16
1
2
4
5
8
5
P35
P21
PSU
6
10
P31
PC
P29
P24
P25
GND
7
6V6
LNA
DOWN-LINK
LED
P22
1
2
V6B
P27
P26
P23
XOA
XOB
P28
P4 P5 P6 P2 P3 P31 P21 P35 P33
P32
P11 P12 P13 V1P14 P22P29P34 V2P36
V6
GND
P25
P24