E1987A Datasheet, PDF (26/27 Pages) Keysight Technologies – cdma2000/IS-95/AMPS

26 | Keysight | E1962B cdma2000/IS-95/AMPS Mobile Test Application - Technical Overview
CDMA analyzer (continued)
Single channel GPS source
E1999A-206 single channel GPS source
GPS signal output
RF IN/OUT or RF OUTPUT only
GPS signal frequency 1.57542 GHz
GPS signal output level –70 to –125 dBm
range
GPS signal output level < ± 1.0 dB, –70 to −116 dBm, < ± 1.5 dB, −116 to
accuracy
−125 dBm
Code type
Coarse/Acquisition (C/A)
Chip rate
1.023 Mcps
Settable parameter
Satellite ID, data patterns, and filters
Perceptual evaluation of speech quality (PESQ) measurement
E1999A-301 PESQ measurement
The PESQ measurement provides an objective method for prediction of
vocoder speech quality using the industry standard PESQ algorithm
Supported service
options
SO1, SO3 (EVRC vocoder), SO17, and SO32768
(13 k vocoder), SO68 (EVRC-B), SO70 (EVRC-
WB)
Measurement mode
Downlink audio, uplink audio, or downlink and
uplink simultaneously
Speech source
Male or female
Expected audio input 1 mV to 2.000 V
peak voltage (downlink
mode)
Maximum audio output 0 to 5.0000 V
peak voltage (downlink
mode)
Uplink PESQ score
–0.50 to +4.50
Downlink PESQ score –0.50 to +4.50
PESQ uplink headroom 0 to 100.0 dB
PESQ downlink
headroom
0 to 100.0 dB
General specifications
Timebase specifications
Internal high stability 10 MHz oven-controlled crystal oscillator
(OCXO)
Aging rates
Aging rates: < ± 0.1 ppm per year, < ± 0.005
ppm peak-to-peak per day during any 24-hour
period starting 24 hours or more after a cold
start
Temperature stability
< ± 0.01 ppm frequency variation from 25 °C
over the temperature range 0 to 55 °C
Warm-up times
5 minutes to be within ± 0.1 ppm of frequency
at one hour, 15 minutes to be within ± 0.01 ppm
of frequency at one hour
Accuracy after a
Typically ± (time since last calibration) x (aging
30-minute warm-up rate) + (temperature stability) + (accuracy of
period of continuous calibration)
operation is derived from
Initial adjustment
Typically ± 0.03 ppm
External reference input
Input frequency
10 MHz
Input frequency range Typically < ± 5 ppm of nominal reference
frequency
Input level range
Typically 0 to +13 dBm
Input impedance
Typically 50 Ω
External reference output
Output frequency
Same as timebase (internal 10 MHz OCXO or
external reference input)
Output level
Typically > 0.5 V rms
Output impedance
Typically 50 Ω
Trigger output
Frame clock output
User-selectable output of 20 ms, 80 ms, or 2 s
Remote programming
GPIB
IEEE Standard 488.2
GPIB help
Pressing the front panel help key and then any
other key will cause the test set to display the
GPIB syntax for that command at the bottom of
the front panel display; pressing the help key
again exits this mode of operation
Remote front panel
lockout
Allows remote user to disable the front panel
display to improve GPIB measurement speed
Implemented functions T6, TE0, L4, LE0, SH1, AH1, RL1, SR1, PP0, DC1,
DT0, C0, and E2
Save/Recall registers
Storage capacity
Five registers that store the complete instru-
ment state except for active cell call processing
status (fixed labels of register 1 to 5); registers
are non-volatile
Recall
Allows user to recall one of the 5 stored
instrument states
Measurement speed
Typical measurement speed based on using at least a 600 MHz
Pentium II processor PC and with the display off mode selected
on the E5515C/E; measurement speeds include the total time
from GPIB measurement request until the controller receives
the result using the INT/FETCH commands; due to variations of
trigger latencies and internal test set processor loading, individ-
ual measurement times may be faster or slower; measurement
speeds also vary depending on the controller GPIB environment
and processor speed.