E1987A Datasheet, PDF (21/27 Pages) Keysight Technologies – cdma2000/IS-95/AMPS

21 | Keysight | E1962B cdma2000/IS-95/AMPS Mobile Test Application - Technical Overview
CDMA analyzer (continued)
Time response of open loop power control measurement
Input frequency ranges 411 to 420 MHz
450 to 484 MHz
824 to 934 MHz
1700 to 1980 MHz
Measurement method
Measures the open loop power versus time
response of a mobile to a 20 dB step in the test
set’s cell power
Measurement data
capture period
100 ms
Measurement trigger User-initiated
Maximum input level +37 dBm/1.23 MHz peak (5 W peak)
Measurement range
–46 to +30 dBm (final level after ± 20 dB step in
cell power)
Measurement level
Auto
ranging
Measurement cell power +20 dB, −20 dB
step size
Marker relative level
accuracy
± 0.5 dB
Marker time accuracy ± 540 μs
Measurement limits
Time versus amplitude mask per IS-98D
Graphical results
Graph: Single trace with IS-98D standard limit
lines
Time display resolution: 270 μs
Time display range: 0 to +100 ms
Amplitude range: –5 to +30 dB
Available results
Pass or fail result and trace of 371 data points
available via GPIB
Concurrency capabilities None; selecting this measurement automatical-
ly closes all other active measurements
CDMA analyzer (continued)
Tx spurious emissions
Input frequency ranges: 411 to 420 MHz
450 to 484 MHz
824 to 934 MHz
1700 to 1980 MHz
Measurement method
Measures the active carrier power in a
1.23 MHz bandwidth, then measures the power
in a 30 kHz bandwidth at two offsets above and
below the active carrier and displays the ratio
of the offset powers to the active carrier power
in dBc; measurement returns valid results for
full rate only in R-RC1 or R-RC2; all rates are
supported in R-RC3 and R-RC4
Measurement data
5 ms
capture period
Measurement offsets
Frequencies < 1000 MHz: ± 885 kHz,
± 1.98 MHz
Frequencies > 1000 MHz: ± 1.25 MHz,
± 1.98 MHz
Measurement bandwidth Active carrier: 1.23 MHz
Offsets: 30 kHz synchronously tuned, five pole
filter with approximately gaussian shape
Measurement trigger 20 ms frame clock
Maximum input level +37 dBm/1.23 MHz peak (5 W peak)
Measurement range 0 to +30 dBm
Measurement level
Auto
ranging
Marker relative level
accuracy
± 885 kHz, ± 1.25 MHz offets: < ± 0.4 dB,
typically < ± 0.2 dB
± 1.98 MHz offsets: < ± 0.8 dB, typically
< ± 0.5 dB
Measurement residual ± 885 kHz, ± 1.25 MHz offets: < –62 dBc/
relative power
30 kHz BW
± 1.98 MHz offsets: < –66 dBc/30 kHz BW
Mobile pass/fail limits (per IS-98D)
–– Auto mode:
–– Frequencies < 1000 MHz:
–– −42 dBc/30 kHz for ± 885 kHz offsets
–– −54 dBc/30 kHz for ± 1.98 MHz offsets
–– Frequencies < 1000 MHz:
–– Frequencies > 1000 MHz:
–– −42 dBc/30 kHz for ± 1.25 MHz offsets
–– −50 dBc/30 kHz for ± 1.98 MHz offsets
Manual mode
Settable from −10 to −65 dBc with 0.01 dB
resolution
Numeric results
Relative power in dBc/30 kHz for each of the
four offset frequencies
Graphical results
Graph: Single trace with IS-98D standard limit
lines and one bar representing the channel
power and four bars representing the relative
power at the four offset frequencies
Amplitude range: 0 to −80 dB
Concurrency capabilities Tx spurious emissions measurements can be
made concurrently with all CDMA measure-
ments that support concurrency