# Agilent DSO9404A 4 GHz Oscilloscope (Pre-Owned) # Agilent DSO9404A 4 GHz Oscilloscope (Pre-Owned) ## Key Features At A Glance - Bandwidth from 600 MHz to 4 GHz across the Infiniium 9000 Series, available as DSO (4 analog channels) or MSO (4 analog + 16 digital channels) configurations - Three instruments in one chassis: oscilloscope, logic analyzer (MSO models), and protocol viewer with multi-tab decode for serial buses - 20 Mpts standard memory per channel (40 Mpts in 2-channel mode), upgradable to 1 Gpts for capturing long time periods at full sample rate - 15-inch XGA touchscreen display in a 9-inch deep package weighing 26 lbs — the largest screen and thinnest profile in its class - Optional protocol decode and triggering for I2C, SPI, RS-232/UART, CAN, LIN, FlexRay, USB, PCIe, MIPI D-Phy, SATA, and JTAG (separate software licenses required per protocol) - Segmented memory acquisition on both analog and digital channels for capturing infrequent bursts without consuming memory between events - AutoProbe interface and dual 50 Ω / 1 MΩ inputs support a wide range of passive, active, differential, and current probes - LXI Class C compliance with LAN, USB 2.0, and XGA/DVI video output for system integration and remote control The Agilent Infiniium 9000 Series is a family of mixed-signal and digital storage oscilloscopes engineered for the broadest measurement capability across hardware design, debug, and compliance test workflows. The series spans four bandwidth tiers — 600 MHz, 1 GHz, 2.5 GHz, and 4 GHz — with each model available as a DSO (four analog channels) or MSO configuration adding sixteen high-speed digital channels. All models share a common platform: a 15-inch XGA touchscreen display, a 9-inch deep chassis, 26 lb weight, and Windows-based operation with standard USB, LAN, and DVI/XGA video output. Engineers use Infiniium 9000 Series oscilloscopes for hardware design and debug, embedded systems development, serial bus analysis, and compliance testing against industry standards. The datasheet identifies application coverage including I2C and SPI bus debug, RS-232/UART decode, CAN/LIN/FlexRay automotive bus analysis, USB 2.0 compliance, DDR1/DDR2/DDR3 and LPDDR memory characterization, Ethernet compliance, MIPI D-Phy validation, PCI Express analysis, SATA testing, JTAG scan chain decode, and jitter analysis with the EZJIT, EZJIT Plus, and EZJIT Complete software families. FPGA developers can use the dynamic probe application for Altera and Xilinx internal-signal visibility. ## Brand Heritage Agilent Technologies was spun off from Hewlett-Packard in 1999, inheriting HP's test and measurement business including the Infiniium oscilloscope platform. In 2014, Agilent's electronic measurement division was separated into a new company, Keysight Technologies, which now holds the Infiniium product line. Instruments sold under the Agilent brand — including the Infiniium 9000 Series — are supported through Keysight's service infrastructure. ## Compare Other Models in This Series The Infiniium 9000 Series is a single oscilloscope platform offered across four analog bandwidth tiers — 600 MHz, 1 GHz, 2.5 GHz, and 4 GHz — with each tier available in DSO (four analog channels) and MSO (four analog plus sixteen digital channels) configurations. All eight models share the same chassis dimensions, the same 15-inch XGA touchscreen, the same Windows-based operating system, the same I/O ports, and the same software application ecosystem. The differences between models are bandwidth, maximum sample rate at the lower bandwidth tier, and the inclusion of digital channels on MSO variants. Because the platform is shared, an Infiniium 9000 Series oscilloscope at any bandwidth tier supports the same advanced triggering, the same segmented memory architecture, the same protocol decode software options, and the same compliance application suite. Selecting between models is primarily a matter of matching the oscilloscope's analog bandwidth and sample rate to the highest signal frequencies present in the device under test, and deciding whether the integrated logic analysis of the MSO configuration is required for the application. Each pre-owned Infiniium 9000 Series model below is listed on its own product page with condition-matched pricing. Click through to the specific model that matches your bandwidth, channel configuration, and digital-channel requirement to see the current quote, included accessories, and installed software options for that exact unit. The DSO9104A / MSO9104A occupies the 1 GHz position in the Infiniium 9000 Series. At this bandwidth tier, the oscilloscope delivers 20 GSa/s maximum real-time sample rate in 2-channel mode (10 GSa/s in 4-channel mode), with a typical rise time of 253 ps (10%–90% at 50 Ω). This model is the entry point in the series for high-speed USB 2.0 compliance testing, which the datasheet identifies as supported on 2.5 GHz and higher models for high-speed USB but supported on the 1 GHz analog channels for low- and full-speed USB. Bandwidth and sample rate are the primary differentiators across the Infiniium 9000 Series. The 600 MHz models (DSO9064A / MSO9064A) provide 10 GSa/s in 2-channel mode and 5 GSa/s in 4-channel mode. The 1 GHz, 2.5 GHz, and 4 GHz models all share the same 20 GSa/s / 10 GSa/s sample rate architecture, with the bandwidth specification driving the analog front-end design and rise-time performance. Typical rise times documented in the datasheet are 540 ps on the 600 MHz model, 253 ps on the 1 GHz model, 142 ps on the 2.5 GHz model, and 85 ps on the 4 GHz model. Software application compatibility varies by bandwidth tier. The datasheet notes that USB 2.0 compliance testing is supported on 2.5 GHz and 4 GHz models, MIPI D-Phy serial decode requires the 4 GHz analog channels, PCI Express serial trigger and protocol viewer requires the 4 GHz model, and SATA triggering and decode requires the 4 GHz model. All other documented software options — including I2C/SPI, RS-232/UART, CAN/LIN/FlexRay, JTAG, low/full-speed USB, EZJIT family jitter analysis, InfiniiScan, and the DDR memory compliance applications — are supported across all four bandwidth tiers. See the comparison table below for the full bandwidth, sample rate, and channel configuration of each model in the series. Model Bandwidth Max Sample Rate (2-ch) Analog Channels **DSO9404A** 4 GHz 20 GSa/s 4 DSO9064A 600 MHz 10 GSa/s 4 MSO9064A 600 MHz 10 GSa/s 4 DSO9104A 1 GHz 20 GSa/s 4 Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Four N2873A 500 MHz passive probes - Probe accessory pouch (mounts on rear of instrument) - Agilent I/O libraries suite 15.0 - Localized power cord - Front panel cover - Keyboard - Mouse - Stylus - 1-year warranty ## Product Core & Specifications Category Specification Value Vertical: Scope Channels Input channels DSO9000 – 4 analog; MSO9000 – 4 analog + 16 digital Vertical: Scope Channels Analog bandwidth (−3 dB) at 1 MΩ 500 MHz (all models) Vertical: Scope Channels Input impedance 50 Ω ± 2.5%, 1 MΩ ± 1% (11 pF typical) Vertical: Scope Channels Input sensitivity 1 MΩ: 1 mV/div to 5 V/div; 50 Ω: 1 mV/div to 1 V/div Vertical: Scope Channels Input coupling 1 MΩ: AC (3.5 Hz), DC; 50 Ω: DC Vertical: Scope Channels Bandwidth limit 20 MHz on 1 MΩ input; 500 MHz up to full scope bandwidth in increments of 500 MHz Vertical: Scope Channels Vertical resolution 8 bits, ≥12 bits with averaging Vertical: Scope Channels Channel-to-channel isolation DC to 50 MHz: 50 dB; >50 MHz to 2.5 GHz: 40 dB; >2.5 GHz to 4 GHz: 25 dB Vertical: Scope Channels DC gain accuracy ± 2% of full scale at full resolution on channel scale ± 5 °C from cal temp Vertical: Scope Channels Maximum input voltage 1 MΩ: 150 V RMS or DC, CAT I; ± 250 V (DC + AC) in AC coupling; 50 Ω: 5 Vrms Vertical: Scope Channels Offset accuracy ± (1.25% of channel offset + 1% of full scale + 1 mV) Vertical: Scope Channels Dynamic range 1 MΩ: ± 8 div from center screen; 50 Ω: ± 8 div from center screen Vertical: Digital Channels (MSO) Input channels 16 digital channels Vertical: Digital Channels (MSO) Threshold groupings 16 digital channels Pod 2: D15–D8 Vertical: Digital Channels (MSO) Threshold selections TTL (1.4 V), CMOS (5.0 V, 3.3 V, 2.5 V), ECL (−1.3 V), PECL (3.7 V), user defined (±8.00 V in 100 mV increments) Vertical: Digital Channels (MSO) Maximum input voltage ±40 V peak CAT I Vertical: Digital Channels (MSO) Threshold accuracy ±(100 mV + 3% of threshold setting) Vertical: Digital Channels (MSO) Input dynamic range ±10 V about threshold Vertical: Digital Channels (MSO) Minimum input voltage swing 500 mV peak-to-peak Vertical: Digital Channels (MSO) Input impedance (flying leads) 100 kΩ ± 2% (~ 8 pF) at probe tip Vertical: Digital Channels (MSO) Resolution 1 bit Vertical: Digital Channels (MSO) Analog bandwidth 400 MHz Horizontal Channel-to-channel skew (digital) 2 ns typical Horizontal Glitch detect (digital) ≥ 2.0 ns Horizontal Main time base range 5 ps/div to 20 s/div Horizontal Horizontal position range 0 to ± 200 s Horizontal Delayed sweep range 1 ps/div to current main time base setting Horizontal Resolution 1 ps Horizontal Modes Main, delayed, roll (200 ms to 20 sec) Horizontal Reference positions Left, center, right Horizontal Channel deskew \-1 ms to +1 ms range Acquisition Memory depth per channel (standard) 20 Mpts on 4 channels, 40 Mpts on 2 channels Acquisition Memory depth (Option 50M) 50 Mpts on 4 channels, 100 Mpts on 2 channels Acquisition Memory depth (Option 100) 100 Mpts on 4 channels, 200 Mpts on 2 channels Acquisition Memory depth (Option 200) 200 Mpts on 4 channels, 400 Mpts on 2 channels Acquisition Memory depth (Option 500) 500 Mpts/250 Mpts on 4 channels, 1 Gpts/500 Mpts on 2 channels (single/repetitive mode) Acquisition Sampling Modes Real-time; Real-time with peak detect; Real-time with high resolution (9-, 10-, 11-, or 12-bits); Real-time with roll mode (200 ms to 20 sec); Equivalent-time (1.0 ps fine interpolator resolution, max effective 1,000 GSa/s); Segmented memory Acquisition Segmented memory segments Up to 8192 for 20 Mpts standard memory, up to 131,072 with Option 500 Acquisition Re-arm time 4.5 µs with analog channels, 5.8 µs with digital channels on Acquisition: Digital Channels Maximum real time sample rate 2 GSa/s **Important:** The Infiniium 9000 Series 1 MΩ input is rated for a maximum of 150 V RMS or DC (CAT I), with ±250 V DC+AC in AC coupling. The 50 Ω input is rated for a maximum of 5 V RMS.**Important:** Maximum input voltage: 1 MΩ: 150 V RMS or DC, CAT I; ±250 V (DC + AC) in AC coupling; 50 Ω: 5 Vrms. Digital channels (MSO): ±40 V peak CAT I.**Important:** Specifications are valid after a 30-minute warm-up period and ±5 °C from firmware calibration temperature.**Important:** USB 2.0 high-speed protocol decode is supported only on scope channels of 1 GHz, 2.5 GHz, and 4 GHz models; low- and full-speed USB is supported on all models.**Important:** MIPI D-Phy decode/compliance, PCI Express compliance, and SATA1 triggering and decode applications require 4 GHz models.**Important:** USB 2.0 compliance testing is supported on 2.5 GHz and 4 GHz models only.**Important:** Ethernet compliance applications are supported on 600 MHz and higher bandwidth models.Recommended pairing: for bandwidths above 500 MHz on the 1 MΩ input, use Agilent active probes via the AutoProbe interface — the N2796A 2 GHz single-ended probe or 1130A 1.5 GHz InfiniiMax probe are matched to the DSO9104A / MSO9104A 1 GHz models per the datasheet's recommended probe list. ## About this used unit - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - 300.0 USD - **Vendor:** Agilent - **Type:** Ms Oscilloscope - **Tags:** 9000 Series, Agilent, Agilent Keysight, Bench Oscilloscope, Digital, Digital Storage Oscilloscope, DSO, Infiniium, Infiniium 9000 Series, Manufacturers, Oscilloscopes, product_manual_group_1, Product_used, Test and Measurement ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 225.00 USD | In stock | | NIST Traceable with Full Data | 262.50 USD | In stock | | ISO IEC 17025 Accredited | 300.00 USD | In stock | ## Images - Agilent DSO9404A 4 GHz Oscilloscope (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/dso9404a-agilent-digital-oscilloscope-used) > Updated: 2026-05-30