User's Manual

CSM System Time – GPS and HSO Verification – continued
3-72 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
RF OUT
ONLY
Hewlett Packard Model HP 8921A W/PCS Interface
(for 1900 MHz)
GPIB
CONNECTS
TO BACK OF
UNITS
SYNC MONITOR
EVEN SEC TICK
PULSE REFERENCE
FROM CSM BOARD
FREQ MONITOR
19.6608 MHZ CLOCK
REFERENCE FROM
CSM BOARD
TEST SETS Optimization/ATP SET–UP
RF
IN/OUT
GPIB
CONNECTS
TO BACK OF
UNIT
SYNC MONITOR
EVEN SEC TICK
PULSE REFERENCE
FROM CSM BOARD
FREQ MONITOR
19.6608 MHZ CLOCK
REFERENCE FROM
CSM BOARD
Hewlett Packard Model HP 8921A
(for 800 MHz)
RF
IN/OUT
DUPLEX
OUT
TO
MPC
TO PA
TRUNKING
MODULE
RS232–GPIB
INTERFACE BOX
INTERNAL PCMCIA
ETHERNET CARD
GPIB
CABLE
UNIVERSAL TWISTED PAIR (UTP)
CABLE (RJ45 CONNECTORS)
RS232 NULL
MODEM
CABLE
S MODE
DATA FORMAT
BAUD RATE
GPIB ADRS G MODE
ON
BTS
INTERNAL
TX
CABLE
CDMA
LMF
DIP SWITCH SETTINGS
10BASET/
10BASE2
CONVERTER
LAN
B
LAN
A
RX TEST
CABLE
GPIB
PCS INTERFACE
INPUT/OUTPUT
PORTS
RX
ANTENNA
CONNECTOR
FREQ
MONITOR
SYNC
MONITOR
CSM
INTERNAL
RX
CABLE
TX
ANT
CPLD
RX
BTS
CPLD
TRF
TX
BTS
CPLD
RX
ANT
CPLD
TX
ANTENNA
CONNECTOR
COMMUNICATIONS
System Analyzer
50 Ω
TERM
.
TX TEST
CABLE
DIRECTIONAL
COUPLER
(30 DB)
100–WATT (MIN.)
NON–RADIATING
RF LOAD
TX TEST
CABLE
* BLACK RECTANGLES
REPRESENT THE RAISED
PART OF SWITCHES
CDMA
TIMEBASE
IN
EVEN
SECOND/
SYNC IN
NOTE: IF BTS IS EQUIPPED
WITH DRFS (DUPLEXED
RX/TX SIGNALS), BOTH THE
TX AND RX TEST CABLES
CONNECT TO THE DRF
ANTENNA CONNECTOR..
REFER TO FIGURE 3-22.)
HP PCS
INTERFACE*
2O DB IN–LINE
ATTENUATOR
* FOR 1900 MHZ
ONLY
RF OUT ONLY
RF IN/OUT
NOTE:
FOR 800 MHZ TESTING, CONNECT CABLES TO THE
HP 8921A AS FOLLOWS:
RX TEST CABLE TO DUPLEX OUT
TX TEST CABLE TO RF IN/OUT
IMPORTANT:
WHEN PERFORMING FER TEST ON COMPANION FRAME DIVERSITY RX,
CONNECT RX TEST CABLE TO RX ANTENNA PORT ON COLLOCATED COMPANION
FRAME.
Figure 3-21: IS–95A/B ATP Test Set–up – HP 8921A
3