User Manual

AS4000 Operations and Maintenance
Section
605-0000-431
6
. Issue 1.6. Date3/2/99
DLP-013
Page 7 of 60 © Copyright Airspan Communications Corporation 1999
e) Connect the cables and termination’s to the Subscriber Terminal Test Unit (Test
CRU) as shown in Figure 7-5.
UP Link
Cable to
CT Rx
Down Link
Cable from
CT TX
TX
RX
ACPSU
TEST CRU
TEST
TELEPHONE
Figure 7-5. Test CRU Connections.
8. Setting Of RX Gain Control.
a) Connect the drop cable of the CRU and the telephony VF pairs to the AC PSU.
b) Connect the AC Mains supply cable to the AC PSU and power up the unit at the mains
supply outlet socket.
c) On Sitespan , select the Analogue/RF card window to set the Receiver Gain control
voltage in the RF Gain Adjust box. Click on the UP or DOWN buttons to set the gain
control voltage to 1.4 Volts.