Keysight E6610A, User And Programming Manual

Page: 28 / 108

7 Setting up Measurements
For CPRI 1 Tx and CPRI 2 Tx:
— Level (dBFS): Enter the CPRI RMS level that corresponds to the maximum
power from the RRH/base station. Range is -40.0 to -6.0 dBFS.
— Waveform: Select the waveform file to be transmitted over CPRI to the RRH.
LTE test models E-TM 1.1 and 3.1 are provided with the N5121A LTE FDD and
N5122A LTE TDD applications. You can also select a custom CSV file, or a file
created by the N7624B LTE FDD or N7625B LTE TDD Signal Studio applications
(requires valid Signal Studio licenses for download to the E6610A). To load
waveform files into the E6610A, go to the menu bar in the GUI and select Instru-
ment > Waveform Manager. See this topic in the
GUI Menus and Displays sec-
tion for more details.
— Trigger: Applies a time delay to the start of the frame transmission. Allowed
range is -5.000 to +5.000 ms.
For CPRI 1 Rx and CPRI 2 Rx:
These settings apply to the capture of the uplink data from the RRH's receiver.
— Length (ms): Set the length of the data capture. Default is one LTE frame, with a
little additional time to allow for timing variations. The E6610A always analyzes
28 Keysight E6610A User and Programming Guide