E1968A Datasheet, PDF (10/22 Pages) Keysight Technologies – GSM/GPRS/EGPRS Test Application

10 | Keysight | E1968A GSM/GPRS/EGPRS Test Application - Technical Overview
(E)GPRS multislot BER measurement
Types of signals
measured
Minimum input level
Residual BER
PRBS-15 data sent on GMSK or 8PSK downlink
PDTCH(s) and looped back by the mobile
For warranted performance, uplink signals at
test set’s RF IN/OUT must have transmit power
≥ –30 dBm and
–– ≤ 25 dB difference in power between
levels of adjacent GMSK timeslots sent on
GPRS signals
–– ≤ 20 dB difference in power between
levels of adjacent GMSK timeslots sent on
EGPRS signals, or
–– ≤ 10 dB difference in power between
levels of adjacent 8PSK timeslots
< 10^-6
Connection types
ETSI type B in active cell GPRS or EGPRS
operating mode or SRB loopback in active cell
EGPRS operating mode
Measurement data
patterns
With data connection type ETSI B (unack) and
data looped back by the mobile, selectable
as all zeros, all ones, alternate bits, alternate
pairs, alternate quads, PRBS-9, PRBS-15, fixed
2B (hex), or custom
GPRS block delay
Settable from 1 to 12 blocks or automatically
determined
EGPRS close loop
signaling delay
Settable from 0 to 5 s
EGPRS loopback delay From 0 to 20
GPRS zero bad blocks Settable as off or on; when on, all bits within a
bad block are set to zero
Numerical results
Number of bits tested, BER, bit error count,
GPRS block delay, EGPRS loopback delay
Multi-measurement
capabilities
1 to 999,000 bits
Concurrency capabilities (E)GPRS BER measurements cannot be made
concurrently with (E)GPRS BLER measure-
ments, but can be made concurrently with all
other measurements
Supplemental characteristics
Measurement resolution 0.01 percent
(E)GPRS multislot BLER measurement
Types of signals
measured
GMSK data looped back by the mobile using
connection type ETSI type B (unack), 8PSK
data looped back by the mobile using connec-
tion type SRB loopback, or information report-
ed by the mobile in Packet_Uplink_Ack_Nack
messages using connection type ETSI type B
(ack) or BLER
Minimum input level
For warranted performance, uplink signals at
test set’s RF IN/OUT must have transmit power
≥ –30 dBm and
For warranted
performance, uplink
signals at test set’s
RF IN/OUT must have
transmit power
≥ –30 dBm and
≤ 25 dB difference in power between levels of
adjacent GMSK timeslots sent on GPRS signals
≤ 20 dB difference in power between levels
of adjacent GMSK timeslots sent on EGPRS
signals, or
≤ 10 dB difference in power between levels of
adjacent 8PSK timeslots
Connection types
Settable as ETSI type B (unack), ETSI type B
(ack), BLER (for GPRS), or SRB loopback (for
EGPRS)
Measurement data
patterns
With data connection type ETSI B (unack) and
data looped back by the mobile, selectable as
all zeros, all ones, all alternate bits, alternate
pairs, alternate quads, PRBS-9, PRBS-15, or
fixed 2B (hex), or custom
Block delay
Settable between 1 and 6 blocks or automati-
cally determined
Numerical results
Number of blocks tested, BLER, block error
count, BLER of each burst (for connection
type ETSI type B (ack), or BLER), level of each
downlink burst, block delay
Multi-measurement
capabilities
1 to 99,000 blocks
Concurrency capabilities GPRS/EGPRS BLER measurements cannot be
made concurrently with GPRS/EGPRS BER
measurements, but can be made concurrently
with all other measurements
Supplemental characteristics
Measurement resolution 0.01 percent