User's Manual Part 2

Test Equipment Set–up – continued
08/01/2001
3-53
1X SCt4812ET Lite BTS Optimization/ATP
PRELIMINARY
Setup for Optimization/ATP
Figure 3-17 and Figure 3-18 show the test set connections for
optimization/ATP tests.
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
Á
Á
Á
Á
Á
Á
Á
Á
Motorola CyberTest
Hewlett–Packard Model HP 8935
DUPLEX OUT
TEST SETS Optimization/ATP SET UP
ÏÏÏÏ
ÏÏÏÏ
ÏÏÏÏ
Ì
RF
IN/OUT
SYNC MONITOR
EVEN SEC TICK
PULSE REFERENCE
FROM CSM BOARD
FREQ MONITOR
19.6608 MHZ CLOCK
REFERENCE FROM
CSM BOARD
RF IN/OUT
HP–IB
TO GPIB
BOX
Advantest Model R3465
INPUT
50–OHM
GPIB CONNECTS
TO BACK OF UNIT
NOTE: The Directional Coupler is not used
with the Cybertest Test Set. The TX cable is
connected directly to the Cybertest Test set.
RF OUT
RX ANTENNA
PORT OR RFDS
RX ANTENNA
DIRECTIONAL
COUPLER
TX ANTENNA
PORT OR RFDS
RX ANTENNA
DIRECTIONAL
COUPLER
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
TX
TEST
CABLE
CDMA
LMF
DIPSWITCH SETTINGS*
10BASET/
10BASE2
CONVERTER
LAN
B
LAN
A
RX
TEST
CABLE
COMMUNICATIONS
TEST SET
IEEE 488
GPIB BUS
IN
TEST SET
INPUT/
OUTPUT
PORTS
OUT
NOTE: IF BTS RX/TX SIGNALS ARE
DUPLEXED, BOTH THE TX AND RX TEST
CABLES CONNECT TO THE DUPLEXED
ANTENNA GROUP AND USE THE 30 DB
DIRECTIONAL COUPLER AND 20 DB IN–LINE
ATTENUATOR.
100–WATT (MIN)
NON–RADIATING
RF LOAD
2O DB
IN–LINE
ATTENUATOR
DIRECTIONAL
COUPLER
(30 DB)
EVEN
SECOND/SYNC
IN (BNC “T”
WITH 50 OHM
TERMINATOR)
CDMA
TIMEBASE
IN
FREQ
MONITOR
SYNC
MONITOR
CSM
FW00096
Figure 3-17: Optimization/ATP Test Setup Calibration (CyberTest, HP 8935 and Advantest)
SYNC MONITOR
EVEN SEC TICK
PULSE REFERENCE
FROM CSM BOARD
FREQ MONITOR
19.6608 MHZ CLOCK
REFERENCE FROM
CSM BOARD
FREQ MONITOR
19.6608 MHZ CLOCK
REFERENCE FROM
CSM BOARD
RF
OUT
* BLACK PORTION OF THE
DIAGRAM REPRESENTS THE
RAISED PART OF THE
SWITCH
50 Ω
ΤERM.
SYNC MONITOR EVEN
SEC TICK PULSE
REFERENCE FROM
CSM BOARD
BNC
“T”
TO EXT TRIGGER CONNECTOR
ON REAR OF TEST SET
(FOR DETAILS, SEE FIGURE F-3)
3