3GPP Signal Analyzer Measurement Guide : TD‑SCDMA/HSDPA Signal Analyzer : TD‑SCDMA/HSDPA RF Measurements : Power versus Time
 
Power versus Time
The Power versus Time view shows the time domain view.
1. Press the Setup main menu key.
a. Press the Slot Selection submenu key. The Slot Selection window and menu open. In the list window, use the rotary knob or press the touch screen to highlight Auto or the desired slot (0 to 6), then press the Enter key.
b. Press the Trigger submenu key. The Trigger menu opens.
c. Press the Trigger Type submenu key to select No Trig, GPS, and Ext. The active state is underlined on the face of the submenu key.
d. Press the Ext Trigger Polarity submenu key to select either Rising or Falling trigger edge.
e. Press the Back submenu key to return to the Setup menu.
f. Press the More submenu key to continue with setups under the Advanced Settings menu.
g. Press the Number of Carriers submenu key so that the desired number is underlined.
h. Press the Spreading Factor submenu key to so that the desired Spreading Factor is underlined: Auto, 16, or 1.
i. To set the Modulation Type, press the Modulation Type submenu key. The Modulation Type selection window opens. Select the desired setting: Auto, QPSK, 8PSK, 16QAM, or 64QAM.
j. If the channel in use has a known DwPTS signal, select On. If the channel in use does not have a DwPTS signal, select Off. If the presence of the DwPTS is unknown, select Auto.
k. If necessary, press the Tau Offset submenu key to specify a Tau Offset value. The maximum value is 5 sec.
l. Press the Back submenu key to return to the Setup menu.
m. Press the Uplink Switch Point submenu key. The numerical value on the face of the submenu key turns red and is ready to be edited. Use the arrow keys or the rotary knob to change the value. You can also use the numeric keypad, then press Enter.
2. Press the Measurements main menu key.
3. Press the RF Measurements submenu key.
4. Press the Power vs. Time submenu key to activate this RF measurement view. Press this key again to set up the Power vs. Time measurement.
a. Press the View submenu key to toggle the measurement view to Sub‑Frame (see Figure: TD‑SCDMA/HSDPA Power vs. Time: Sub‑Frame Measurement) or Slot (see Figure: TD‑SCDMA/HSDPA Power vs. Time: Slot Measurement).
b. Press the Slot Selection submenu key. The Slot Selection window and menu open. In the list window, use the rotary knob or press the touch screen to highlight Auto or the desired slot (0 to 6), then press the Enter key.
c. Press the Back submenu key to return to the RF Measurements menu.
d. Press the Back submenu key again to return to the Measurements menu.
 
TD‑SCDMA/HSDPA Power vs. Time: Sub‑Frame Measurement
 
TD‑SCDMA/HSDPA Power vs. Time: Slot Measurement