The Data Throughput Monitor can analyze data transfer rates under various RF and call processing conditions. You can initiate the Data Throughput Monitor by pressing the
key. It is displayed on the
screen (accessible using the
This feature does not attempt to monitor application layer data throughput (FTP, HTTP, TELNET, etc.).
OTA Rx and OTA Tx
OTA (Over the Air) throughput counts the data transmitted and received by the test set's protocol stack. The location of the measurement point in the protocol stack is dependent upon system type; this data could be a byte stream from RLP (Radio Link Protocol) or RLC (Radio Link Control) or PPP (point to point protocol). OTA throughput does not count physical layer overhead such as mid-amble, guard, or tail bits, or bits added by the encoding process.
IP Rx and IP Tx
IP (Internet Protocol) throughput counts the data transmitted and received by the test set. It measures the IP data transferred between the external LAN connector and the protocol stack. It provides a measure of the IP data packets being transferred to/from the wireless device.
When the Data Throughput Monitor is selected and a data call is connected, the test set accumulates data throughput statistics. If a data call is disconnected, data accumulation is suspended until another connection is made and data accumulation continues. Data accumulation can be cleared by performing a measurement reset or clearing the graph.
For WCDMA applications that have the required Dual Cell HSDPA license, there are three OTA Rx results available: OTA Rx (for the serving cell), OTA2 Rx (for the secondary serving cell) and OTA Rx Total (for the two cells combined). Accordingly you can enable any of the OTA Rx traces.
Four sets of Context <n> traces can be set: Context 1 Tx/Rx, Context 2 Tx/Rx, Context 3 Tx/Rx and Context 4 Tx/Rx. Totally there are 12 traces results are available form the Data Throughput Monitor, but six of them can be display on the screen at one time. The users can choose which traces are to be displayed by pressing
A marker can be assigned to each trace to display instantaneous numeric data throughput values. Markers can be used in conjunction with the Freeze Graph feature to analyze points of interest on traces.