26.5 Ghz (Ref Input); Act (Status); Analyzer: <100 Khz (Phase Det Output); Analyzer: <100 Mhz (Phase Det Output) - Keysight Technologies Agilent N5500A Instruction Manual

1.2 - 26.5 GHz (REF INPUT)

This connector is a reference signal input to the microwave phase detector.
Limits
• Level range: +7 to +10 dBm
• Frequency: 1.2 to 26.5 GHz

ACT (STATUS)

This LED is not used for phase noise measurement.
ANALYZER: <100 kHz (PHASE DET OUTPUT)
The signal at the <100 kHz phase detector output connector is a high
impedance output to the FFT analyzer used for phase noise measurements.
ANALYZER: <100 MHz (PHASE DET OUTPUT)
The signal at the <100 MHz phase detector output connector is the output to
the baseband spectrum analyzer used for phase noise measurements.
Characteristics
• Output impedance: 50 Ω nominal

ERR (STATUS)

The error message LED illuminates when an operational error occurs.

FROM DOWNCONVERTER

The signal at this connector is the input from the downconverter's IF output
connector. The From Downconverter connector, along with the To
Downconverter connector, is used to insert a downconverter in the signal
path.

LSN (GPIB)

The listen LED illuminates when the system addresses the instrument to
listen.
Agilent N5500A Hardware Reference
Front and Rear Panel Interfaces
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