Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 2866 / 2870

15 Power Control Measurement
View/Display
Name Corresponding Results Resolution
It indicates “Message” for the PRACH message burst.
Pre-Burst Off Pwr n=4 (Npreamble – 1) * 5 + 1 th element
Pre-Burst Off Power of Nth burst
nn.nn dBm
Bst On Pwr n=4 (Npreamble – 1) *5 + 2 th element
Burst On Power of Nth burst
nn.nn dBm
Bst On Pwr n=4 (Npreamble – 1) *5 + 3 th element
Burst On Power relative to the previous burst
nn.nn dB
Post-Burst Off Pwr n=4 (Npreamble – 1) *5 + 4 th element
Post-Burst Off Power of N th burst
nn.nn dBm
Time Offset Chip n=4 (Npreamble – 1) *5 + 5 th element
Time Offset relative to the previous burst
--- for first PRACH burst.
nnnnn for others
Slot Phase Measurement
There are two windows, the RF Envelope window (upper) and the Metrics window (lower). The windows’
content is the same as that returned by the Slot Power Measurement in the Chip Power Method.
Key Path
View/Display
Mode WCDMA
Initial S/W Revision Prior to A.02.00
Phase Graph & Metrics
For the Remote Command, see "View/Display" on page 2856 .
This view is available only when the measurement type is set to Slot Phase (“SPHase”). See "Meas Type"
on page 2667 . For other measurement types, this key is grayed out.
Slot Phase Measurement
There are two windows, the "Phase Error window" on page 2866 (upper) and the "Metrics window" on page
2867 (lower).
Phase Error window
Marker Operation Yes for all traces
Corresponding Trace yellow – Chip phase error trace from the reference phase (n=7)
light blue – Chip phase error best-fit line (n=8)
violet – Phase Discontinuity line
2866 W-CDMA & HSPA Measurement Applications Reference