Cdma Generator Modulation Accuracy; Performance Test 27 - Agilent Technologies E8285A Manual

Performance Tests
CDMA Generator Modulation Accuracy Performance Test 27

CDMA Generator Modulation Accuracy

Performance Test 27

The purpose of this test is to verify that the Test Set meets the specification limits
in PTR (Performance Test Record)
Accuracy Test 27 Record" on page
generator is directly measured with a vector signal analyzer at the DUPLEX OUT
port. Because the vector signal analyzer cannot measure rho directly, the
modulation accuracy is measured in EVM (Error Vector Magnitude) % rms and
rho is calculated from the EVM data.
Setup
Figure 6-32 CDMA Generator Modulation Accuracy Test 26
Vector Signal Analyzer
Procedure
1. On the Test Set:
194
INPUT
a. Press .
Preset
b. Select the CONFIGURE screen.
c. Set the RF Display field to Freq.
d. Set the (Gen)-(Anl) field to 0 MHz.
e. Set the Output Port field to Dupl.
f. Select the CDMA CALL CONTROL screen.
g. Set the RF Gen Freq field to 881.52 MHz.
h. Select the CDMA GENERATOR CONTROL screen.
i. Set the Scrt A Pwr field to –10 dBm.
j. Turn off the Synth, Pager, and Traffic fields.
k. Set the Pilot field to 0 dB.
table 7-28, "CDMA Generator Modulation
245. The modulation accuracy of the CDMA
CALL CONTROL
Answer Print
Call/ End/ Register Tests
Page Release
USER CDMA SCREENS
Cell config Spectrum SMS
Call Gen Authen-
K1'
control control tication
K1
MS report MS FER
RX test TX test TX
range
K2'
K2
DATA FUNCTIONS
K3'
Ref set Meter Average
K3 Increment Increment Increment
10 set x 10
Assign Low limit High limit
K4
Release
K5
IBASIC
reset
Shift Cancel
POWER RF IN/OUT DUPLEX OUT ANTENNA IN VOLUME
DO NOT apply RF Max power 2.5W
Max power 60 mW
when in standby
DUPLEX OUT
S:\agilent\e8285\ALR\Book\chapters\perf_test.fm
UTILITIES
Printer I/O config Help
Config Previous Message Preset
Hold
Meas
ANALOG SCREENS reset
Address
Call Duplex Spectrun Local
control analyzer
Save
RX test TX test AF Recall
analyzer
DATA
7 8 9 Enter
Ghz
4 5 6
dBm
dB
1 2 3 MHz
V
%
0 . +/- kHz
mV
s
mW
Yes No % Hz
On/Off Ratio dB µV
W ms
AUDIO OUT AUDIO IN
High Low
Max 12V peak Max
42V peak