E1987A Datasheet, PDF (16/27 Pages) Keysight Technologies – cdma2000/IS-95/AMPS

16 | Keysight | E1962B cdma2000/IS-95/AMPS Mobile Test Application - Technical Overview
IS-95 active cell call processing functionality
(continued)
Real-time vocoder
Functionality
Provides real-time encoding of external audio
applied to the front panel audio in port and
real-time decoding of audio output via the front
panel audio out port
Real-time vocoder
support
13 k vocoder in service options 17 and 32768
and the EVRC vocoder in service option 3
Encoder data rate mode
Auto, fixed, or limited; in auto mode the vocoder
algorithm selects the rate based on the sam-
pled audio; fixed mode locks the rate to the user
selected rate; limited allows the vocoder to use
the user selected rate and any lower rate, if
available
Encoder data rate
Full, half, quarter, or eighth
Expected input voltage 0 to 2 V; sets the input gain for external audio
applied to the front panel audio in port
Max output voltage
0 to 5 V; sets the output level of the
decoded audio routed to the front panel audio
out port
Vocoder limitations
When active, no measurements are allowed
during real-time vocoding
Settable system time
Functionality
Allows user to set the system time for the
CDMA system; system time is retained during
power-off using the internal real-time clock
CDMA system date
Settable in the format of yyyy.mm.dd for the
year, month, and day
CDMA system time
Settable in the format of hh.mm.ss for the
hour, minute, and seconds; input resolution is
2 seconds
Leap seconds
Settable from 0 to 255 seconds
Local time offset
Settable in the format of hh.mm from 00.00 to
15.30 in 30 minute increments
Daylight savings time
indicator
On or off
Option E1962B-403 CDMA authentication
Adds support for IS-95/cdma2000 active cell authentication. Does not
support encryption.
CDMA authentication
Functionality
Provides basic authentication capabilities for
call processing; does not support encryption.
Authentication
commands
Unique challenge and SSD update
Global challenge
On or off
Authentication user
parameters
A-key (decimal), RAND (hex), RANDU (hex), and
RANDSSD (hex)
Global challenge results
AUTHU expected value, AUTHU received value
and pass/fail result; RANDC expected value,
RANDC received value and pass/fail result;
COUNT (call history); AUTH_MODE
Unique challenge results AUTHU expected value, AUTHU received value,
and pass/fail result
SSD update results
Pass/fail result