User's Manual Part 2

Test Equipment Set–up – continued
Mar 2001
3-49
SCt4812T CDMA BTS Optimization/ATP
DRAFT
Figure 3-12: TX Calibration Test Setup HP 8921A W/PCS for 1.7/1.9 GHz
Hewlett–Packard Model HP 8921A W/PCS Interface
POWER METER
TEST SETS TRANSMIT (TX) SET UP
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
30 DB
DIRECTIONAL
COUPLER
WITH UNUSED
PORT TERMINATED
100–WATT (MIN)
NON–RADIATING
RF LOAD
TX
TEST
CABLE
CDMA
LMF
DIP SWITCH SETTINGS
2O DB PAD
10BASET/
10BASE2
CONVERTER
LAN
B
LAN
A
TX ANTENNA
GROUP OR TX
RFDS
DIRECTIONAL
COUPLERS
Note: The HP 8921A cannot be used for TX
calibration. A power meter must be used.
TX
TEST
CABLE
POWER
SENSOR
FW00095
3