E1969A Datasheet, PDF (14/19 Pages) Keysight Technologies – TD-SCDMA_GSM Fast Switch Test Application

14 | Keysight | TD-SCDMA_GSM Fast Switch Test Application - Technical Overview
Measurements Technical Specifications
Transmitter measurements continued
Dynamic power (DPOW)
Measurement method: Measures a series of power levels for a step sequence. Provides
a fast power calibration method that covers the typical 85 dB (from –55 to +28 dBm)
dynamic range of a TD-SCDMA mobile station
Measurement level range: –55 to +28 dBm/1.28 MHz; For the trigger steps, the step
power is expected to be within +9 to –9 dB of the expected power; For the measure-
ment steps, the first step power is expected to be within +9 to –9 dB of the initial step
power; The relative power difference between adjacent step is expected to be within
+9 to –20 dB
Frequency capture range: –20 to +20 kHz from the expected measurement receiver
frequency
Timing capture range: –25 to +25 chips from the measurement trigger
Measurement interval: 1 timeslot excluding the guard period when the sync mode is
‘Midamble’; 784 chips when the sync mode is ‘None’
Measurement accuracy (at ±10 °C from the calibration temperature):
< ±1 dB (typically < ±0.6 dB) for −65 to 28 dBm, Bands 34 and 39
Typically < ±0.6 dB for −60 to 28 dBm, Band 40
Typically < ±0.7 dB for −60 to 28 dBm, Band 41
Measurement triggers: RF rise, protocol, and external
Concurrency capabilities: Dynamic power measurement cannot be made
concurrently with other measurements. Dynamic power measurement cannot be
made while the HSDPA RMC connection is provided
Temperature range: +15 to +55 °C
Closed loop power control (CLPC) measurement
Measurement method: The closed loop power is defined as the relative power differ-
ences between RRC filtered mean power of original timeslot and that of the target
timeslot without transient duration. It’s the user’s responsibility to drive UE output
power to the right level as the start power of the first segment. UE should work in
test mode to be able to synchronize with downlink signals on timing and frequency,
and transmit traffic burst on TS1 without call connection, the power of which is under
closed loop power control. When this measurement is initiated, the given number of
DOWN TPC commands followed by the given number of UP TPC commands will be
sent on the downlink traffic slot, one TPC command per one subframe. The UE output
power on TS1 in continuous subframe would be measured
Measurement level range: –55 to +28 dBm/1.28 MHz; first step power should be within
±6 dB of the expected power. Relative power difference between adjacent steps is
expected to be within ±6 dB. The crest factor is expected to be < 10.0 dB
Frequency capture range: –20 to +20 kHz from the expected measurement receiver
frequency
Timing capture range: –25 to +25 chips from the measurement trigger
Measurement data capture period: 1 timeslot excluding the guard period, 662.5 µs
Measurement triggers: RF rise, protocol, and external
Concurrency capabilities: Closed loop power control measurement cannot be made
concurrently with other measurements. Close loop power control measurement cannot
be made while the HSDPA RMC connection is provided