Understanding PSG Memory Types

Basic Operation

Using Security Functions

section also have an equivalent SCPI command for remote operation. (Refer to the “System Commands” chapter of the E8257D/67D PSG Signal Generators SCPI Command Reference for more information.)

The PSG comprises several memory types, each used for storing a specific type of data. Before removing sensitive data, it is important to understand how each memory type is used in the PSG. The following tables describe each memory type used in the base instrument, optional baseband generator, and optional hard disk.

Table 2-2 Base Instrument Memory

Memory	DuringWritable Operation?Normal	RetainedData PoweredWhenOff?	Purpose/Contents	Data Input Method	Location in Instrument and Remarks
Memory
Type
and Size

Main	Yes	No	firmware operating	operating system	CPU board, not battery backed.
Memory			memory	(not user)
(SDRAM)
64 MB

Main	Yes	Yes	factory	firmware upgrades	CPU board (same chip as firmware memory, but
Memory			calibration/configuratio	and user- saved data	managed separately)
(Flash)			n data		User data is not stored in this memory if hard disk
					User data is not stored in this memory if hard disk
20 MB			user file system, which		(Option 005) is installed.
			includes instrument		Because this 32- MB memory chip contains 20 MB of
			status backup, flatness		Because this 32- MB memory chip contains 20 MB of
			status backup, flatness		user data (described here) and 12 MB of firmware
			calibration, IQ		user data (described here) and 12 MB of firmware
			calibration, IQ		memory, a selective chip erase is performed. User
			calibration, instrument		memory, a selective chip erase is performed. User
			calibration, instrument		data areas are selectively and completely sanitized
			states, waveforms		data areas are selectively and completely sanitized
			states, waveforms		when you perform the Erase and Sanitize function.
			(including header and		when you perform the Erase and Sanitize function.
			(including header and
			marker data),
			modulation definitions,
			and sweep lists

Firmware	No	Yes	main firmware image	factory installed or	CPU board (same chip as main flash memory, but
Memory				firmware upgrade	managed separately)
(Flash)					During normal operation, this memory cannot be
					During normal operation, this memory cannot be
12 MB					overwritten except for LAN configuration. It is only
					overwritten during the firmware installation or
	Yes	Yes	LAN configuration	front panel entry or	overwritten during the firmware installation or
	Yes	Yes	LAN configuration	front panel entry or	upgrade process.
				remotely	Because this 32- MB memory chip contains 20 MB of
					Because this 32- MB memory chip contains 20 MB of
					user data and 12 MB of firmware memory (described
					here), a selective chip erase is performed. User data
					areas are selectively and completely sanitized when
					you perform the Erase and Sanitize function.

Chapter 2

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.

Agilent Technologies E8267D PSG manual Understanding PSG Memory Types, Base Instrument Memory

Models: E8267D PSG E8257D PSG