Output Control Register | Agilent Technologies E1446A guide

The DAC Control The DAC control register sets the output level of the amplifier/DAC.

Register

Address

base + 0816

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0

DAC Control Code

DAC Control Code	DAC Output	Amplifier Output
000016	+ full scale	- full scale: -19.9992V
7FFE 16	+ 1 LSB	- 1 LSB: -.610 µV
		(open circuit)
7FFF16	0	0
800016	- 1 LSB	+ 1 LSB: + .610 µV
		(open circuit)
FFFF16	- full scale	+ full scale: + 20.0000V

The Output Control Register

At power-on the DAC control code is set to 0, which is - full scale.

The Output Control register controls the output attenuation and impedance of the amplifier’s ’Main’ and ’differential’ outputs.

Address	15 - 8	7	6	5	4	3	2	1	0

base + 0A16	FF16	0dB	20dB	50-75Ω	’Main’	50-75Ω	50-75Ω	0Ω	reserved
		output	output	output	output	out imp	out imp	output	(must be
		path	path	imped.	enable /	of	of inv	imped.	set to ’1’)
					disable	non -inv	amp
						amp

Bits 7 - 6. Bits 7 and 6 set the attenuation at the amplifiers’s main output. Setting bit 7 to one (1) specifies the 0dB output path. Setting bit 7 to zero (0) opens the 0dB output path. Setting bit 6 to one (1) specifies the 20dB output path. Setting bit 6 to zero (0) opens the 20dB output path. At power-on, the output attenuation is undefined.

Bit 5. Setting bit 5 to one (1) sets the ’Main’ output impedance to 50Ω. Setting bit 5 to zero (0) sets the ’Main’ output impedance to 75Ω. At power-on, the output impedance is undefined.

Bit 4. Setting bit 4 to one (1) enables the amplifier’s ’Main’ output. Setting bit 4 to zero (0) disables the amplifier’s ’Main’ output. At power-on the bit value is undefined, but the output is disabled.

Bits 3 - 2. Bits 3 and 2 set the output impedance of the amplifier’s

non-inverting and inverting ’differential’ outputs. Setting bit 3 to one (1) sets the impedance of the non-inverting output to 50Ω . Setting bit 3 to

Register Descriptions

Register-Based Programming C-9

E1446A specifications

Agilent Technologies E1446A is a high-performance modular instrument designed for a wide range of applications in the fields of test and measurement. As part of the Agilent family of products, this device exemplifies advanced engineering and innovative technology, catering to the needs of engineers and researchers in various industries.

One of the main features of the E1446A is its dual-channel capability, allowing users to conduct simultaneous measurements, increasing efficiency and reducing test times. The instrument supports a variety of functions, including waveform generation, signal analysis, and frequency measurements. This multifunctionality makes the E1446A a versatile tool for tasks such as automatic test equipment (ATE), signal integrity analysis, and RF testing.

Equipped with state-of-the-art ADCs (Analog-to-Digital Converters) and DACs (Digital-to-Analog Converters), the E1446A ensures high precision and accuracy in measurements. With a bandwidth of up to 500 MHz, it can handle a wide range of signals, making it suitable for both low-frequency and high-frequency applications. The instrument supports various input signal types, including sine, square, and custom waveforms, expanding its applicability across diverse testing scenarios.

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User-friendliness is another hallmark of the E1446A. It features a straightforward interface, designed for intuitive operation, which reduces the learning curve for new users. Additionally, the instrument is compatible with various programming languages, including SCPI, making it easy to integrate into existing test systems and automate testing processes.

Finally, the E1446A's compact form factor and rugged design allow for deployment in demanding environments, fulfilling the needs of both laboratory and field applications. With its blend of precision, versatility, and ease of use, the Agilent Technologies E1446A remains a vital instrument for engineers and researchers looking for dependable test and measurement solutions. Its capabilities continue to support innovation across a spectrum of technological advancements.

Agilent Technologies E1446A user manual Output Control Register

Models: E1446A