Technical data

Chapter 19 557
W-CDMA or W-CDMA (with HSDPA) Analyzer
W-CDMA or W-CDMA (with HSDPA) Analyzer Measurement Settings
W-CDMA or W-CDMA (with HSDPA)
Analyzer
correct sequence of scrambling codes required to demodulate the DPCH channels.
Setting the Display Reference Level
You can set the W-CDMA or W-CDMA (with HSDPA) Tx analysis display to show
the power in each channel as either relative power (dB) or absolute power (dBm).
The test set's default display mode is relative. In relative mode, the top horizontal
line (top-most graticule) of the display represents the total power (channel power) in
the 3.84 MHz bandwidth of that W-CDMA or W-CDMA (with HSDPA) signal
being broadcast by the transmitter. It is always 0 dB in this mode since it is a relative
measurement. The power in each channel is shown as a vertical bar, with its height
expressed in dB relative to the total channel power.
If you set the reference level mode to absolute, then the top graticule in the display
still corresponds to total channel power in the 5 MHz bandwidth. However, the
reference level and all the power values of the vertical bars showing the power in
each channel are now indicated with absolute power in dBm.
To set the W-CDMA or W-CDMA (with HSDPA) transmitter reference level (while
in W-CDMA or W-CDMA (with HSDPA) Analyzer mode):
Step Notes
1[Freq/Chan/Time Ref]
2 [Scramble C...]
3 [Auto] or [Manual] Each time you press this softkey, the
selected option changes.
In Manual mode, you can enter a number
using the keypad.
Step Notes
1 [Level/Location]
2 On [Reference] select
Abs or
Rel.
Each time you press this softkey, the
selected option changes.