78 Agilent N8201A Performance Downconverter Synthetic Instrument Module, 3 Hz to 26.5 GHz
3Using the Agilent Synthetic Instrument GUI
•G - 140 to 220 GHz
•Y - 170 to 260 GHz
•J - 220 to 325 GHz
Harmonic A use r defined frequency band. Limits are −50 to −1 or 1 to 50.
Mixer Bias Turns on/off the mixer bias and adjusts an internal bias source for use with
external mixers. The bias signal is present on the center conductor of the IF INPUT
connector on the front panel.
Bias Level Sets the bias level. Limits ar e −10 mA to 10 mA.
Calibration
Accesses the Align system and immediately executes an alignment cycle of all the
subsystems (Align RF, Align IF, Align ADC, and Align Current Sys Gain). The instrument will
change any current system settings currently underway, perform the full alignment, and
then return to the current system settings that were in place before the calibration began.
A calibration nominally takes 35 seconds to perform.
The N8201A downconverter will meet its specif ications when:
•It is stored a minimum of two hours within the operating temperature range and turned
on for at least 30 minutes followe d by a calibration.
•When a calibration has been performed within t he past 24 hours or when the
temperature changes 3 °C.
•The front panel 1st LO OUT connector is terminated with a 50 ohm load.
Events (Settling Events and Event Logging)

Settling Event

Allows you to define the parameters of the Settling Event. The Settling Event ha s a positive
edge when the frequency is set and a negative edge when the system is stabiliz ed.

Settling Channel

Selects the channel to configure. Possible values are:
LXI0 LXI1 LXI2 LXI3
LXI4 LXI5 LXI6 LXI7
LAN0 LAN1 LAN2 LAN3
LAN4 LAN5 LAN6 LAN7