Can modular cards be used across different mainframe families?

Generally, modules are family-specific. For example, the 16910A and 16950A are built for 16900 series mainframes, whereas the 16717A and 16760A are designed for 16700 series mainframes. However, some legacy cards like the 16557D and 16522A are compatible across multiple families, including both 16700 series mainframes and compatible legacy frames.

Does the 16531A oscilloscope module operate as a standalone card?

No. The 16531A is a 2-channel digitizing oscilloscope expansion card that requires a master oscilloscope timebase module to function. It is designed to be installed in compatible modular mainframes to provide time-correlated analog measurements.

Which mainframes require an external monitor?

The 16700A and 16700B modular mainframes do not have integrated displays and require an external monitor for operation. This distinguishes them from sister models like the 16702A and 16702B, which feature integrated touchscreens.

Keysight Technologies (Agilent HP) Logic Analyzers

23 models with full specifications in Analyzers Logic.

Keysight Technologies (including legacy Agilent Technologies and Hewlett-Packard) logic analyzers range from standalone portable systems to high-performance modular analysis environments. This guide explains how the logic analyzer portfolio is structured, helping digital designers and system integrators select the appropriate chassis, standalone platform, or acquisition module. The range spans legacy HP-UX modular architectures, Windows-based open operating platforms, benchtop instruments, and modern high-speed AXIe cards.

Modular Mainframe Series: 16700 Series, 16900 Series
Standalone System Options: Portable touchscreen, benchtop CRT, CRT/Oscilloscope combinations
Highest State Data Rate Module: U4154A (Up to 4 Gb/s)
Chassis Slot Capacity: 3 to 6 measurement slots

All models

Model	Type	Display	Operating Temperature	Power Supply
16700A	Agilent	External monitor required (no internal display)	—	—
16802A	Agilent	—	—	—
16903A	Main Frame	12.1-inch color touch screen, SVGA (800 x 600)	—	—
16902A	Main Frame	12.1-inch SVGA color touchscreen (800 x 600 resolution)	0 °C to 50 °C	—
16522A	Agilent modules	—	0 to +55 °C	Powered by mainframe backplane
16700B	Agilent	External monitor required	0 °C to 50 °C	115/230 V, 48 to 66 Hz, 610 W max
16702A	Agilent	9.1-inch color active-matrix LCD with 800 x 600 SVGA resolution	0 to +50	115/230 VAC auto-selecting, 48 - 66 Hz, 615 W maximum
16702B	Agilent	12.1-inch color LCD flat panel, 800 x 600 pixels resolution with integrated touchscreen	0 °C to +50 °C	100 to 240 VAC (±10%), 48 to 66 Hz, 615 W maximum
16910A	Agilent modules	None (uses mainframe display)	0 to 50 °C	Power supplied by 16900 series mainframe backplane
16950A	State Timing Analysis Modules	None (uses mainframe display)	0 °C to 50 °C	Draws power from mainframe slot
16717A	State Timing Analysis Modules	—	0 °C to +50 °C	Powered by mainframe backplane
16517A	State Timing Analysis Modules	None (uses mainframe display)	—	Powered by mainframe backplane
16555A	State Timing Analysis Modules	Mainframe-dependent (supports waveform, mixed state/timing, and interleaved state/state listings)	0 °C to +55 °C	Powered via mainframe backplane
16555D	State Timing Analysis Modules	None (uses mainframe display)	—	Powered via mainframe backplane
1660CS	Agilent	9-inch Color CRT	0 °C to +55 °C	115/230 V AC, 48 to 66 Hz, 200 W maximum
16760A	State Timing Analysis Modules	None (uses mainframe display)	0 to 50 °C	Powered by mainframe backplane
16902B	Agilent	15-inch (38.1 cm) color touch screen display, 1024 × 768 resolution	0 to +40 °C	100 - 240 V AC (±10%), 50/60 Hz, 615 W maximum
U4154A	Agilent modules	None (headless module; requires mainframe or external PC host display)	0 to 50 °C	Powered via AXIe backplane (48 VDC nominal), 155 W maximum power consumption
16531A	Agilent modules	None (uses mainframe display)	0 to +55 °C	Powered via mainframe backplane
16557D	State Timing Analysis Modules	None (requires mainframe display)	0 °C to +55 °C	Powered via mainframe backplane
1672G	Agilent	Color flat-panel display with VGA resolution	0 to +40 °C	—
1680A	*misc	12.1-inch active-matrix color TFT flat panel, 800 x 600 resolution	0 to +45 °C	100 to 240 VAC, 47 to 63 Hz (or 115 VAC at 400 Hz), 320 W maximum
54620A	Agilent	7-inch monochrome CRT	0 °C to +55 °C	100 to 240 V AC (±10%), 45 to 440 Hz, 80 VA max

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Modular System Mainframes

Modular systems allow users to customize their test setups by mixing acquisition, pattern generation, and analog measurement cards. Mainframes are generally divided by their operating architecture and slot capacity.

16700 Series (HP-UX): Mainframes such as the 16700A and 16700B are headless units requiring an external monitor, whereas the 16702A and 16702B feature integrated touchscreens (9.1-inch and 12.1-inch respectively) and dedicated controls. These frames provide 5 measurement slots for configuring multi-channel systems.
16900 Series (Windows): Designed for higher-performance system-level debugging, these frames use a Windows-based operating system. This series includes the 3-slot 16903A and the 6-slot 16902A and 16902B mainframes. The 16902B is distinguished by its 15-inch color touchscreen display and high-capacity 6-slot frame.

Standalone and Portable Instruments

For benchtop environments or field debugging where a modular chassis is unnecessary, Keysight offers dedicated, non-modular analyzers.

Portable Windows Systems: The 16802A is a 68-channel analyzer with a 15-inch touchscreen. It features 4 GHz timing zoom for high-resolution timing verification. The 1680A is a standalone 136-channel system equipped with a 12.1-inch color display.
Compact and Combined Tools: Standalone options also include the 1672G, which provides 68 channels, and the 54620A, a portable 16-channel analyzer with an oscilloscope-style interface and a 7-inch monochrome CRT. The 1660CS combines 136 logic channels with an integrated 2-channel oscilloscope, allowing simultaneous digital troubleshooting and analog signal observation.

Acquisition, Pattern Generation, and Oscilloscope Modules

Mainframe performance is determined by the installed cards:

Legacy and High-Speed 16700 Modules: The 16555A and 16555D are 68-channel modules offering 110 MHz state analysis, while the 16557D provides 135 MHz state clock speeds and is compatible with 16700 series frames. For faster buses, the 16717A provides 68 channels with a 333 MHz state clock, and the 16760A provides 34 channels up to 1.5 Gb/s with differential input support. The 16517A is a 16-channel module capable of 1 GHz state acquisition.
16900 Series Modules: These include the 102-channel 16910A (up to 450 MHz state clock) and the 68-channel 16950A, which raises the state clock speed to 600 MHz and provides 4 GHz timing zoom.
AXIe Modules: For ultra-high-speed memory buses, the U4154A is a headless AXIe-based module supporting state data rates up to 4 Gb/s on 68 channels (or 2.5 Gb/s on 136 channels).
Pattern Generators and Scope Cards: Specialized modules include the 16522A, a 200 MHz digital pattern generator, and the 16531A, a 2-channel 100 MHz digitizing oscilloscope card designed to interface with modular mainframes.