Agilent Technologies E4445A User Manual

174 Chapter 3
Instrument Functions: M - O
Marker
Instrument Functions: M - O
:CALCulate:MARKer[1]|2|3|4:X:SPAN?
Returns the spacing of the markers in frequency.
Example: CALC:MARK3:MODE SPAN selects marker 3 and sets it to
Span Pair.
CALC:MARK4:X:POS:SPAN 200 sets the spacing between the markers to
200 trace points for marker pair 4.
CALC:MARK2:X:POS:CENT 300 sets the midpoint between the markers to
the 300th trace point from the left of the display. For a 601 point trace this
will be the middle of the display.
3.1.6 Off
Turns off the selected marker. In addition, Off turns off functions related to the selected
marker such as
Signal Track, Band/Intvl Power, and Marker Noise and removes marker
annotation from the display.
Key Path:
Marker
Remote Command:
See “Select Marker” on page 169 for the command to select the control mode.
Example: CALC:MARK3:STAT OFF selects marker 3 and sets it to
Off.

Agilent Technologies E4445A Specifications

General

Brand	Agilent Technologies
Model	E4445A
Category	Measuring Instruments
Language	English

Summary

2. Instrument Functions: A − L

Marker Functions

Manages markers for trace analysis: Normal, Delta, Span Pair, Off, Marker Trace, Readout.

MEASURE Functions

Displays measurement menu for transmitter power, ACP, OBW, and distortion measurements.

MODE and Mode Setup

Selects measurement mode and configures common settings across measurements.

Peak Search Functions

Places marker on highest peak and displays search menu with parameters like Threshold and Excursion.

Preset Functions

Provides actions for instrument state reset: User, Mode, Factory presets, and Save User Preset.

SPAN / X Scale Functions

Activates Span function and displays menu for Span, Span Zoom, Full Span, Zero Span, Last Span.

SWEEP Functions

Controls sweep time, mode (continuous/single), auto sweep time, and gate parameters.

5 Programming Fundamentals

SCPI Language Basics

Introduces SCPI programming language, keywords, syntax, and parameters.

Improving Measurement Speed

Provides tips to make programs run faster, such as turning off display updates and using binary format.

Using the LAN to Control the Instrument

Details on configuring and controlling the instrument using LAN, including FTP, Telnet, Socket LAN, SICL.

Programming in C Using the VTL

Provides basic information about programming in C language using Agilent VTL (VISA transition library).

6 Using the STATus System

Status System Commands

Lists IEEE (*) Commands and STATus Commands for instrument status monitoring.

Using the Status Registers

Explains the PSA instrument status registers, their hierarchy, and how to use them.

7 Menu Maps: Spectrum Analysis

AMPLITUDE Y Scale Key

Menu maps for AMPLITUDE Y Scale functions, covering Reference Level, Attenuation, Scale, Presel, Corrections.

Auto Couple Key

Menu maps for Auto Couple, covering Auto All, FFT & Sweep, Detector, Avg/VBW Type, ADC Dither/Ranging.

BW/Avg Key

Det/Demod Key

Display Key

File Key

FREQUENCY Channel Key

Input/Output Key

Marker Key

Accesses marker control menu: Normal, Delta, Delta Pair, Span Pair, Off, Marker Trace, Readout.

Marker --> Key

Marker Fctn Key

MODE Key

Peak Search Key

Places marker on highest peak and displays search menu with parameters like Threshold and Excursion.

Preset Key

Provides actions for instrument state reset: User, Mode, Factory presets, and Save User Preset.

SPAN X Scale Key

SWEEP Key

System Key

Trig Key