User Manual

AS4000 Release3 and Release 4 Central
Terminal Installation and Commissioning
DLP-016
605-0000-432
Issue 1.3a Date 18th October 1999
Page 5 of 8
Power
Meter
ST
Test
Unit
(S Band)
CT Rack
3
1 2
30dB
30dB
30dB 30dB
2:1
Splitter
2:1
Splitter
2:1
Splitter
SMA-N
RF Sensor
N-SMA
11dB
Variable *
DIP/LNA TX Filter
RX
TX
* Set variable attenuator to give an insertion loss of 108dB
between points A and B (nominal value of 7dB)
NTU
NTU
ACPSU
If TX Filter not fitted
Terminate port here
Adapter
Female to
Female
A
B
C
Figure 41. Test Set-Up Modem Shelves (2.3-2.5GHz Band)
g) Connect the cables and terminations to the Test CRU as shown in Figure 38.
h) Connect the drop cable of the CRU and the telephony VF pairs to the AC PSU.
i) Connect the AC Mains supply cable to the AC PSU and power up the unit at the
mains supply outlet socket.
UP Link
Cable to
CT Rx
Down Link
Cable from
CT TX
TX
RX
ACPSU
TEST CRU
TEST
TELEPHONE
Figure 42. Test CRU Connections.