Keysight E6610A, Руководство пользователя и программирования

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7 Setting up Measurements
Keysight E6610A User and Programming Guide 31
occupying all available resource blocks for the selected bandwidth. You can
also select a CW signal, 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 Instrument > Waveform
Manager.
— Trigger: Specifies a time delay for the start of waveform playback. Allowed
range is -5.000 to +5.000 ms.
— Ext Attn (dB): Enter the external attenuation in your test setup between the
RF Tx output of the E6610A and the Rx input of the RRH. This value should be
entered before setting the Level. The E6610A will use this information com-
bined with the "Level (dBm)" setting to set the power level transmitted from the
RF Tx port. The range is 0 to 80.00 dB.
— Level (dBm): Enter the power level to be applied at the Rx input of the RRH. The
E6610A will use this information combined with the "Ext Attn" setting to set the
power level transmitted from the RF Tx port. After accounting for the "Ext Attn"
setting, the allowable RF Tx output power range is -80.00 to 0 dBm.
Configure Trigger and Reference Settings
To enable trigger inputs and outputs or to choose external vs. internal reference, go
to the menu bar in the GUI software and select Instrument > Trigger & Reference
Options.
— Input synchronization signal: Sets the E6610A to use the signal at the rear
panel SYNC-IN input as an external trigger.
— Output synchronization signal: Sets the E6610A to output a periodic signal at
the rear panel SYNC-OUT connector that is aligned with the start of each
LTE frame.