Using a TD-SCDMA Standard Setup

Click Preset to Standard to set the VSA to demodulate and analyze a 3GPP N-TDD Time Division Duplex: A duplexing technique dividing a radio channel in time to allow downlink operation during part of the frame period and uplink operation in the remainder of the frame period. 1.28Mcps, TD SCDMA modulated signal. The following table provides a list of the parameters and settings that are set when using the Preset to Standard property:

The TD-SCDMA demodulator must be selected before these Standard Presets are available.

Default parameter settings
Parameter	3GPP N-TDD †
Span	1.6 MHz Megahertz: A unit of frequency equal to one million hertz or cycles per second.
Chip Rate	1.28 MHz
Alpha	0.22
Enable HSPA/8PSK	cleared
Force Code Group	Downlink Pilot
Downlink Pilot	0
Uplink Pilot	0
Code Group	selected
Scramble Code	0
Code Group	selected
Basic Midamble Code Group	0
Code Group	selected
Traffic Timeslot (TS Technical Specification):
Max Users (K)	0
TimeSlot	TS0
Despread Channel:
Spread Code Length	16 (80 ksym/s)
Code Channel	0
CDP Layer:
Spread Code Length	16 (80 ksym/s)
Moduation Scheme:
Auto-detect for all code channels	selected
Manual:	cleared
SF 1) Spreading Factor, or 2) service flow: A unidirectional flow of medium access control (MAC) service data units (SDUs) on a connection that is provided a particular Quailty of Service (QoS).	16
Chan	All
Mod Type	Auto
Result Length	1 subframe
Time Reference	DwPTS (Downlink Pilot)
Start Boundary	Sub-frame
Analysis Timeslots	TS0
Uplink Switch Point	1
Analysis Subframe	0
Active Slot Threshold	-30 dBc deciBels referenced to the carrier: A technique for expressing a power measurement in logarithmic form using the carrier power as a reference.
Subframe Synchronization	Pilot
Active Channel Threshold	Auto
Active Channel Threshold	-30 dBc
Slot Frequency Reference	Midamble
Normalize IQ Traces	selected
Mirror Frequency Spectrum	cleared
Include IQ Offset in EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format.	selected
Show Raw QPSK Quadrature phase shift keying Symbols	cleared
Bypass RRC Meas Filter	cleared