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Front and Rear Panel Interfaces
MONITOR (PHASE DET OUTPUT)
A baseband signal from the detector and LNA in use is available at this port. It
may be useful to observe this signal on an oscilloscope to help troubleshoot the
phase noise measurement process, or to observe the noise characteristics of a
device under test in the time domain.
Characteristics
• The source impedance is 50 Ω, but the port is intended to drive a load
• The voltage level may range from 1 mV to 2 V p-p.
NOISE (INPUT)
The noise input connector accepts the following inputs:
• Millimeter measurements using an external millimeter wave mixer
• AM noise measurements using an external AM detector
• Baseband noise measurements (using a DC block).
The input bypasses all of the internal phase detectors and routes the signal
directly to the input filters and low noise amplifiers.
Limits
• Frequency: 0.01 Hz - 100 MHz
Characteristics
• Input impedance: 50 Ω, nominal
OUT OF LOCK
This LED illuminates if the internal comparators detect either an excessive
peak voltage from the phase detector or an excessive change in the tune
voltage.
POWER
This switch puts the instrument in active operation or standby mode. It is a
standby switch and not a LINE switch. The detachable power cord is the test
set's disconnecting device. It disconnects the mains circuits from the mains
supply before other parts of the instrument or system.
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impedance much greater than 50 Ω.
Agilent N5500A Hardware Reference
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