E1987A Datasheet, PDF (20/27 Pages) Keysight Technologies – cdma2000/IS-95/AMPS

20 | Keysight | E1962B cdma2000/IS-95/AMPS Mobile Test Application - Technical Overview
CDMA analyzer (continued)
Modulation quality measurement (continued)
Code domain power
relative measurement
accuracy (IS-2000
R-RC3 and R-RC4 only)
< ± 0.005 relative to total power for linear code
domain powers from 0.05 to 1.0
Code domain power < ± 0.20 dB
offset relative to reverse
pilot channel (IS-2000
R-RC3 and R-RC4 only)
Code domain results
(IS-2000 R-RC3 and
R-RC4 only)
Code domain power graph: Displays the power
in all 16 Walsh coded channels (16 bit) for
both the I channel and the Q channel; reported
power in each graph is relative to the total com-
bined I and Q channel power; red bars indicated
active
Code domain table: Displays the Walsh code,
spread factor, code domain power (at SF=16),
total code domain power, and code relative
power to the R-Pilot channel for each active
reverse channel; possible active channels per
IS-2000 include the R-Pilot, R-FCH, R-DCCH,
R-SCH1, and R-SCH2
Code domain power and noise graph: Displays
the power and noise in all 16 Walsh coded
channels (16 bit) for both the I channel and the
Q channel; reported power in each graph is
relative to the total combined I and Q channel
power; red bars indicate active channels, while
yellow bars indicate noise in each channel
Code domain measurement results: Pass/fail
indication based on IS-98E standard
specifications
Modulation quality measurement results: Rho,
frequency error, time error, carrier feedthrough,
phase error, amplitude error, and EVM
Statistical measurement results: Provides
minimum, maximum, and average for rho,
frequency error, time error, carrier feedthrough,
phase error, amplitude error, and EVM when
multi-measurement mode is active; no statis-
tical results are available for any of the code
domain power results
Concurrency capabilities: Modulation quality
measurements can be made concurrently
with all CDMA measurements that support
concurrency
Code channel time and phase error
Input frequency ranges 411 to 484 MHz
800 to 1000 MHz
1700 to 2000 MHz
Measurement chip rate 1.2288 Mcps
Measurement method Measures all active reverse code channel’s
(IS-2000 R-RC3, R-RC4 time and phase error relative to the mobile’s
and R-RC8 only)
transmitted R-Pilot channel
Maximum input level +37 dBm/1.23 MHz peak (5 W peak)
Input level range
−25 to +30 dBm/1.23 MHz, usable to
–50 dBm/1.23 MHz with reduced accuracy
Code channel time and
phase error measure-
ment range (for signals
with < ± 6 μs static time
error and < ± 1 kHz
frequency error)
Code channel time error: Up to ± 100 ns
Code channel phase error: Up to ±0.5 radians
Measurement interval 1.042 ms (5 Walsh symbols)
CDMA analyzer (continued)
Code channel time and phase error (continued)
Relative code channel
measurement accuracy
These tables display the accuracy versus the
residual EVM of the phone for a given number of
measurement averages. These graphs are valid
for all reverse channel configurations where
each active channel has at least 10% of the
total power
Measurement residuals
Graphical results
Code channel residual time error:
± 3 ns, typically ± 16 ns at –50 dBm/1.23 MHz
Code channel residual phase error:
± 7 milli-radians, typically ± 26 milli-radians at
–50 dBm/1.23 MHz
Code channel time error graph: Displays
the relative time error in all 15 Walsh coded
channels (16 bit) for both the I channel and the
Q channel relative to the R-Pilot channel; red
bars indicate time error in each detected active
channel
Code channel phase error graph: Displays
the relative phase error in all 15 Walsh coded
channels (16 bit) for both the I channel and the
Q channel relative to the R-Pilot channel; red
bards indicate phase error in each detected
active channel
Concurrency capabilities: Code channel time
and phase error measurements can be made
concurrently with all CDMA
measurements that support concurrency
Pass/fail limits: Settable with default value set
to the IS-98D limits of ± 10 ns for code channel
time error and ± 0.15 radians for code channel
phase error
Other measurement results: Pass/fail for each
graph