Refer to the instrument User Guide for information on how to select the TD‑SCDMA/HSDPA Signal Analyzer mode, set up frequency and amplitude, and perform file management.
TD‑SCDMA/HSDPA RF Measurements
The following parameters are measured in the RF Measurement mode.
Channel Power
Channel power measures the average time domain power within the 1.6 MHz channel bandwidth and is expressed in dBm.
Channel Power (RRC)
Channel Power (RRC) is similar to Channel Power but is measured after being filtered by using the Root Raised Cosine (RRC) filter. It is usually smaller than channel power.
Slot x Pwr
X denotes slots 0 through 6. This is the power in each of the 7 slots, excluding the gap.
Occ BW
Occupied bandwidth is the calculated bandwidth containing 99% of the total integrated power occupied in the span. Span is 5 MHz when Number of Carrier is set to 1. For all other values, span is set to 1.6 MHz.
DwPTS Pwr
The power in the Downlink Pilot slot, excluding the gap.
UpPTS Pwr
The power in the Uplink Pilot Slot, excluding the gap.
DL‑UL Delta Power
The average difference between the active DL slots and the active UL slots, including pilot slots. UL and DL slots are selected according to the Uplink Switch Point setting. Without UL data slot and without UpPTS, the DL‑UL Delta Power value is not applicable.
On/Off Ratio
The ratio of the power between the on and off portions of the Downlink slots.
Slot PAR
The peak to average power in the selected (or auto detected) slot. The highest 0.1% power of the slot is used as the peak.
Left Channel Power
The channel power of the 1.6 MHz channel left of the main channel. This is useful in the multi‑carrier environments.
Right Channel Power
The channel power of the 1.6 MHz channel right of the main channel. This is useful in the multi‑carrier environments.
Left Channel Occ BW
This is the occupied bandwidth of the channel left of the main channel and is useful in a multi‑carrier environment. This value is N/A when Number of Carriers is set to 1.
Right Channel Occ BW
This is the occupied bandwidth of the channel right of the main channel and is useful in a multi‑carrier environment. This value is N/A when Number of Carriers is set to 1.
Measurement Setup
Refer to the User Guide for general instrument setup instructions, and continue with the following setups for the specific RF measurements.