E1969A Datasheet, PDF (16/19 Pages) Keysight Technologies – TD-SCDMA_GSM Fast Switch Test Application

16 | Keysight | TD-SCDMA_GSM Fast Switch Test Application - Technical Overview
Measurements Technical Specifications
Receiver measurements
Loopback BER measurement
Measurement method: Data loopback (Mode 1 in 3GPP TS 34.109)
Concurrency capabilities: Loopback BER measurement cannot be made concurrently with
CLPC/ILPC, TD-SCDMA dynamic power, BLER, and HSDPA BLER measurement; loop-
back BER measurements can be made concurrently with all other measurements
BER measurement input level range: –50 to +28 dBm/3.84 MHz
Final results: Measured BER, number of errors, number of bits tested, uplink missing
blocks, CRC errors, and loopback delay
Block error ratio
Measurement method: The UE is configured to loop back the data bits and the CRC bits
from the downlink transport blocks into the uplink transport blocks on the DPCH; a
comparison is made in the test set by generating a CRC using the data bits received on
the uplink and comparing the calculated CRC against the CRC received in the uplink
transport block
Reported parameters: Measured BLER, block error count, number of blocks tested, and
uplink missing blocks
Concurrency capabilities: BLER measurements cannot be made concurrently with loop-
back BER, HSDPA BLER measurement, dynamic power measurement, open loop power
control measurement, close loop power control measurements, or while speech is
provided on the downlink; BLER measurements can be made concurrently with all other
measurements
HSDPA block error ratio
Measurement method: Test set counts the ACK/NACK/statDTX on UE HS-DPCCH and
uses the results to calculate BLER
Reported parameters: Measured BLER, number of blocks tested, throughput, number of
ACKs, number of NACKs, and number of stat DTXs
Concurrency capabilities: HSDPA BLER measurements cannot be made concurrently with
loopback BER, BLER measurement, dynamic power measurement, open loop power
control measurement, close loop power control measurements, or while speech is
provided on the downlink; BLER measurements can be made concurrently with all other
measurements
Common measurements
Frequency stability measurement
Types of signals measured: Analog and AMPS signals with or without SAT and with frequency
modulation index β < 3.0 radians
Frequency capture range: Signal must be within ±200 kHz of test set’s expected frequency
Measurement rate range: 100 Hz to 15 kHz
Minimum input level: Signal at test set’s RF IN/OUT must have analog Tx power > –30 dBm
Measurement trigger source: Immediate
Measurement additional filter: Pass band = 30 kHz; stop frequency at ±60 kHz (–25 dB
attenuation)
Available result: RF frequency and RF frequency error
Multi-measurement capabilities: 1 to 999 measurements, minimum, maximum,
average, and standard deviation in Hz for all results and worst case RF frequency error in
ppm result
Concurrency capabilities: Frequency stability measurement can be made concurrently
with all analog measurements