Technical data

Sweep 23

Agilent N8201A Performance Downconverter Synthetic Instrument Module, 250 kHz to 26.5 GHz 465

Gate

Turns the gate function on and off. When set On, the LO (local oscillator) sweeps whenever

the gate conditions are satisfied by the signal at the Gate Source selected under Gate

Setup. Turning on the Gate turns off Gate View (described below).

Some instruments require a hardware upgrade before gating can be used.

Because the LO is gated, the N8201A only sweeps while the gate is enabled. A complete

sweep may require several gate events. The N8201A starts sweeping when the gate signal

is enabled and stops when it is disabled, then continues sweeping when it is again enabled,

and so on, until the sweep is complete. So, the actual sweep time may be longer than the

displayed time since it assumes that the instrument is sweeping continuously, not stopping

and starting in response to the gating signal. In addition, the sweep time can be five times

slower then expected because the measurement is using a short gate delay or a short gate

length. This slowing is needed because the resulting resolution bandwidth does not allow

the required hardware settling time before starting to sweep.

The enabled or disabled state of the gate appears at the TRIGGER 2 OUT rear panel

connector. A TTL high output indicates that the gate function is enabled. This is always

true, whether the Gate itself is turned On or Off (except during alignments).

Option 124 is a Video Out connection. The y-axis video out signal is not available when

gating is being used.

Key Path: Sweep

Dependencies/Couplings:

Gate is unavailable/off when:

• FFT & Sweep setting is Manual:FFT

• Signal Track on

• Marker Count on

These functions are unavailable whenever Gate is on:

• Manual:FFT (Auto Couple, FFT & Sweep, Manual:FFT)

• Signal Track (Frequency, Signal Track)

• Presel Center (Amplitude, Presel Center)

• Marker Count (frequency counter function)

State Saved: Saved in Instrument State

Factory Preset: Off

Remote Command:

[:SENSe]:SWEep:EGATe[:STATe] OFF|ON|0|1