Keysight E6610A, Руководство пользователя и программирования

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7 Setting up Measurements
Keysight E6610A User and Programming Guide 29
the first frame only, but up to 30 ms of data (3 frames) can be captured for data
export and analysis with other software tools. Minimum value is 0.5 ms.
— Trigger: Specifies a time delay from the start of the frame to initiate the data
capture. Allowed range is -5.000 to +5.000 ms.
— Input check box: Enable or disable the CPRI capture channel.
Configure RF RX Ports
Click on the "RF RX" tab to configure settings for the RF Rx1 and RF Rx2 ports, which
are used to test the Tx outputs from the RRH.
— Freq (MHz): Enter the frequency for the RF Rx port, which is the RRH's Tx output
frequency. Note: Both RF RX 1 and RF RX 2 are automatically set to the same
frequency.
— 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
the first frame only, but up to 30 ms of data (3 frames) can be captured for data
export and analysis with other software tools. Minimum value is 0.5 ms.
— Trigger: Specifies a time delay from the start of the frame to initiate the data
capture. Allowed range is -5.000 to +5.000 ms.
— Ext Attn (dB): Enter the external attenuation in your test setup between the Tx
output of the RRH and the RF Rx input of the E6610A. This value should be
entered before setting the Level. This information will be combined with the