Signal Generator Overview

Front Panel Display

EXT REF

This annunciator appears when an external frequency reference is applied.

FM

This annunciator (Option UNT only) appears when frequency modulation is turned

 

on. If phase modulation is turned on, the ΦM annunciator will replace FM.

I/Q

This annunciator (E8267D only) appears when I/Q modulation is turned on.

L

This annunciator appears when the signal generator is in listener mode and is

 

receiving information or commands over the RS- 232, GPIB, or VXI- 11 LAN

 

interface.

MOD ON/OFF

This annunciator (E8267D and E8257D with Options UNT, UNU, or UNW only)

 

indicates whether active modulation formats have been enabled or disabled.

 

Pressing the Mod On/Off hardkey enables or disables all active modulation formats

 

(AM, FM, ΦM, Pulse, or I/Q) that are applied to the output carrier signal available

 

through the RF OUTPUT connector. The Mod On/Off hardkey does not set up or

 

activate an AM, FM, ΦM, Pulse, or I/Q format; each individual modulation format

 

must still be set up and activated (for example, AM > AM On) or nothing will be

 

applied to the output carrier signal when the Mod On/Off hardkey is enabled.

OVEN COLD

This annunciator (Option UNR/UNX only) appears when the temperature of the

 

internal oven reference oscillator has dropped below an acceptable level. When

 

this annunciator is on, frequency accuracy is degraded. This condition should

 

occur for several minutes after the signal generator is first connected to line

 

power.

PULSE

This annunciator (Options UNU or UNW only) appears when pulse modulation is

 

on.

R

This annunciator appears when the signal generator is remotely controlled over

 

the GPIB, RS- 232, or VXI- 11/Sockets LAN interface (TELNET operation does not

 

activate the R annunciator). When the R annunciator is on, the front panel keys

 

are disabled, except for the Local key and the line power switch. For information

 

on remote operation, refer to the Programming Guide.

RF ON/OFF

This annunciator indicates when the RF or microwave signal is present (RF ON) or

 

not present (RF OFF) at the RF OUTPUT. Either condition of this annunciator is

 

always visible in the display.

S

This annunciator appears when the signal generator has generated a service

 

request (SRQ) over the RS- 232, GPIB, or VXI- 11 LAN interface.

SWEEP

This annunciator appears when the signal generator is in list, step, or ramp sweep

 

mode (ramp sweep is available with Option 007 only). List mode is when the

 

signal generator can jump from point to point in a list (hop list); the list is

 

traversed in ascending or descending order. The list can be a frequency list, a

 

power level list, or both. Step mode is when a start, stop, and step value

 

(frequency or power level) are defined and the signal generator produces signals

 

that start at the start value and increment by the step value until it reaches the

 

stop value. Ramp sweep mode (Option 007 only) is when a start and stop value

 

(frequency or power level) are defined and the signal generator produces signals

 

that start at the start value and produce a continuous output until it reaches the

 

stop value.

T

This annunciator appears when the signal generator is in talker mode and is

 

transmitting information over the GPIB, RS- 232, or VXI- 11 LAN interface.

16

Chapter 1

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Agilent Technologies E8267D PSG, E8257D PSG manual Interface

E8267D PSG, E8257D PSG specifications

Agilent Technologies, a recognized leader in electronic measurement and communications solutions, offers a comprehensive range of signal generators, including the E8257D PSG (Pulsed Signal Generator) and E8267D PSG. These instruments are engineered to meet the demanding requirements of wireless communication, aerospace, defense, and various research applications.

The E8257D PSG is known for its versatility and reliability. It operates within a frequency range of 250 kHz to 40 GHz, making it suitable for a wide array of applications, from signal generation to vector modulation. With an output power capability of up to +30 dBm, it delivers high-quality signals with exceptional precision. Its low phase noise performance is especially critical for applications such as radar and communication system testing, where signal integrity is paramount.

One of the standout features of the E8257D is its advanced modulation capabilities, including analog and digital modulation schemes. This flexibility allows engineers to simulate real-world communications environments accurately. The PSG also features a built-in arbitrary waveform generator that enables users to create complex waveforms tailored to specific testing needs, providing a significant advantage in research and development.

On the other hand, the Agilent E8267D PSG is designed to cater to the needs of users requiring a combined signal generation and analysis solution. With the capability to generate signals from 250 kHz to 67 GHz, the E8267D is ideal for millimeter-wave applications, as well as testing next-generation wireless technologies.

This model includes features such as enhanced phase noise performance and faster switching speed, which are crucial for signal integrity in sophisticated networks. The instrument's intuitive user interface and powerful software integration facilitate effortless operation and automation, thereby improving workflow efficiency.

Both the E8257D and E8267D PSG instruments incorporate cutting-edge technologies such as low-noise microwave and RF components, as well as digital signal processing capabilities. They provide users with enhanced accuracy and reliability in their measurements.

In summary, Agilent Technologies' E8257D and E8267D PSG signal generators represent the pinnacle of precision in signal generation technology. With their extensive feature sets, advanced modulation capabilities, and robust performance specifications, these instruments are invaluable tools for engineers and researchers working across various high-tech industries.