# Agilent 54825A 500 MHz 4-Channel Infiniium Oscilloscope (Pre-Owned) # Agilent 54825A 500 MHz 4-Channel Infiniium Oscilloscope (Pre-Owned) ## Key Features At A Glance - Bandwidth from 500 MHz to 1.5 GHz across the Infiniium 54800 series, with 2- and 4-channel configurations - Real-time sample rates up to 8 GSa/s and equivalent-time sampling to 500 GSa/s on top-tier models - Memory depth up to 65,536 points per channel in 2-channel mode on the 54835A and 54845A - Simple analog-like front panel combined with a Windows 98-based graphical user interface with drag-and-drop measurements - Standard 10/100 LAN, GPIB (IEEE 488.2), RS-232, and Centronics interfaces for connectivity and automated test integration - Violation triggering including runt, setup/hold time, pulse width, and transition trigger modes (runt standard on 54835A/54845A, optional on 54810A/15A/20A/25A via Option 015) - Built-in 3.2 GByte hard drive and 120 MB LS-120 SuperDisk floppy drive for waveform, setup, and screen image storage - Optional Communications Mask Test Kit (Option 100) with ITU G.703 and ANSI T1.102 industry standard masks for compliance testing The Agilent 54845A is a 1.5 GHz, 4-channel digital storage oscilloscope and the top-tier model of the Infiniium 54800 series. The datasheet describes the Infiniium family as combining a simple analog-like front panel with the graphical user interface of a PC and connectivity capabilities intended to make high-performance features accessible. The 54845A provides real-time sample rates up to 8 GSa/s in 2-channel mode and 4 GSa/s in 4-channel mode, with equivalent-time sampling to 500 GSa/s and memory depth up to 65,536 points per channel in 2-channel mode. An oscilloscope captures voltage waveforms over time and displays them on a screen, letting an engineer visualize how a signal behaves — amplitude, frequency, timing, and shape. The Infiniium 54800 series is designed for design, debug, and characterization work where bandwidth, sample rate, and triggering depth are the deciding specifications. The datasheet positions the 1.5 GHz 54845A for the most demanding signal capture requirements in the family, while the 500 MHz and 1 GHz models address general-purpose lab measurements at lower bandwidth tiers. ValueTronics has supplied new and used electronic test equipment since 1992 and stocks, tests, and ships every instrument from our 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Each pre-owned Infiniium oscilloscope is inspected and verified by our in-house technicians before it leaves the facility, and our calibration upgrade options let you match the documentation level your quality system requires. We are not a drop-shipper or a pass-through broker; the instrument you order is physically here, and the person you call when you have a question has hands-on knowledge of the unit. ## Brand Heritage The Infiniium 54800 series oscilloscopes were originally manufactured by Hewlett-Packard's test and measurement division, which was spun out as Agilent Technologies in 1999 and subsequently transitioned to Keysight Technologies in 2014. Instruments carrying Agilent branding are part of the same product lineage as later Keysight-branded equipment. ## Compare Other Models in This Series The Infiniium 54800 series spans six models built on a common front-panel, user-interface, and connectivity architecture. The datasheet groups the family by bandwidth tier: the 54810A, 54815A, 54820A, and 54825A at 500 MHz; the 54835A at 1 GHz; and the 54845A at 1.5 GHz. Channel count and sample rate vary within each tier. Across the family, every model shares the Windows 98-based graphical user interface, the analog-like front panel with dedicated per-channel scale and position knobs, standard LAN/GPIB/RS-232/Centronics connectivity, the 3.2 GByte internal hard drive with LS-120 SuperDisk floppy, color-graded persistence display, and the 27-parameter automatic measurement set. The differences across models are concentrated in bandwidth, real-time sample rate, channel count, and memory depth. Each pre-owned model linked below is its own product page with its own pricing reflecting that model's bandwidth tier, channel count, and current condition. Use the comparison table to identify the bandwidth, sample rate, and channel count that match your application, then open the specific model page for full specifications and current availability. The 54845A sits at the top of the Infiniium 54800 series with 1.5 GHz analog bandwidth at the 50 Ω input, 8 GSa/s real-time sample rate in 2-channel mode (4 GSa/s in 4-channel mode), and 65,536-point memory depth in 2-channel mode. It is a 4-channel instrument with a 233 ps rise time at 50 Ω, and runt triggering is standard rather than an option. Within the 500 MHz tier, the 54810A and 54820A are 2-channel instruments while the 54815A and 54825A are 4-channel instruments; sample rate is 1 GSa/s on the 54810A and 54815A, and 2 GSa/s on the 54820A and 54825A. Memory depth is 32,768 points per channel across all four 500 MHz models. The 54835A steps the family up to 1 GHz with 4 GSa/s in 2-channel mode and 2 GSa/s in 4-channel mode. The 54845A is the 1.5 GHz, 8 GSa/s flagship. Triggering, input voltage limits, and a few other characteristics also vary across the family. Minimum trigger pulse width is 1 ns on the 54810A/15A/20A/25A and 500 ps on the 54835A/45A. Maximum input voltage at 1 MΩ is ±250 V (dc + ac) on the 54810A/15A/20A/25A and ±100 V (dc + ac) on the 54835A/45A. Runt triggering is standard on the 54835A/45A and Option 015 on the 54810A/15A/20A/25A. Model Bandwidth Channels Max Sample Rate **54825A** 500 MHz 4 2 GSa/s 54810A 500 MHz 2 1 GSa/s 54815A 500 MHz 4 1 GSa/s 54820A 500 MHz 2 2 GSa/s Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - 1 Mouse (C3751-60201) - 1 Infiniium Mouse Pad (54810-85901) - 1 Keyboard (E2610A) - 1 User's Quick Start Guide, English language (54810-97000) - 1 Service Guide - 1 Programmer's Guide - 1 Programmer's Quick Reference Guide - Information System in English, French, German, Japanese, Korean and Chinese (for Taiwan) - 4 1160A 10:1 10 MΩ passive probes - 1 Accessory Pouch (54810-68701) - 1 US power cord - Three-year warranty ## Product Core & Specifications Specification 54810A / 54815A / 54820A / 54825A 54835A 54845A Acquisition Maximum Sample Rate (Real Time) 54810A/15A: 1 GSa/s on each channel; 54820A/25A: 2 GSa/s on each channel 2 channel mode: 4 GSa/s; 4 channel mode: 2 GSa/s 2 channel mode: 8 GSa/s; 4 channel mode: 4 GSa/s Maximum Effective Sample Rate (Equivalent Time) 100 GSa/s 500 GSa/s 500 GSa/s Memory Depth 32,768 points/channel 2 channel mode: 65,536 points; 4 channel mode: 32,768 points 2 channel mode: 65,536 points; 4 channel mode: 32,768 points Sampling Modes Real Time: Successive single shot acquisitions. Equivalent Time: Random Repetitive sampling. Peak detect (54810/15/20/25A only): captures pulses 1 ns or wider at sample rates ≤ 250 MSa/s Averaging Selectable from 2 to 4096 Vertical Number of Channels 54810A/20A: 2; 54815A/25A: 4 (simultaneous acquisition) 4 (simultaneous acquisition) 4 (simultaneous acquisition) Analog Bandwidth (-3dB) 500 MHz 50 Ω: 1.0 GHz; 1 MΩ: 500 MHz (with 1161A probe) 50 Ω: 1.5 GHz; 1 MΩ: 500 MHz (with 1161A probe) Real Time Bandwidth 54810A/15A: 250 MHz; 54820A/25A: 500 MHz 50 Ω: 1.0 GHz (2 channel mode); 500 MHz (4 channel mode) 50 Ω: 1.5 GHz (2 channel mode); 1.0 GHz (4 channel mode) Rise Time 54810A/15A: 700 ps (Equivalent Time), 1.4 ns (Real Time); 54820A/25A: 700 ps 50 Ω: 350 ps; 1 MΩ: 700 ps 50 Ω: 233 ps; 1 MΩ: 700 ps Sensitivity (1 MΩ) 1 mV/div to 5 V/div 2 mV/div to 2 V/div 2 mV/div to 2 V/div Sensitivity (50 Ω) 1 mV/div to 5 V/div 2 mV/div to 1 V/div 2 mV/div to 1 V/div Input Impedance 1 MΩ ± 1% (≈8 pF), or 50 Ω ± 1% 1 MΩ ± 1% (≈12 pF), or 50 Ω ± 1.5% 1 MΩ ± 1% (≈12 pF), or 50 Ω ± 1.5% Input Coupling dc, ac (7 Hz, available in 1 MΩ only) Maximum Input Voltage (1 MΩ) ± 250 V (dc + ac) \[ac < 10 kHz\], CAT I ± 100 V (dc + ac) \[ac < 10 kHz\], CAT I ± 100 V (dc + ac) \[ac < 10 kHz\], CAT I Maximum Input Voltage (50 Ω) 5 Vrms, CAT I Hardware Bandwidth Limit (-3 dB) On/Off selectable, 30 MHz n/a n/a dc Gain Accuracy ± 1.25% of full scale at full resolution channel scale ± 1% of full scale at full resolution channel scale ± 1% of full scale at full resolution channel scale Resolution 8 bits (0.4% of full scale), 12 bits or greater with sufficient averaging Horizontal Main Time Base Range 500 ps/div to 20 s/div 100 ps/div to 20 s/div 100 ps/div to 20 s/div Delayed Sweep Range 1 ps/div to current main time base setting Resolution 10 ps 2 ps 2 ps Timebase Accuracy 50 ppm (.005%) 70 ppm (.007%) 70 ppm (.007%) Jitter, RMS n/a 8 ps ± .005% (delay setting) 8 ps ± .005% (delay setting) Trigger Sweep Modes Auto, triggered, single Trigger Coupling dc, ac (7 Hz), low frequency reject (50 kHz), high frequency reject (50 kHz) Trigger Holdoff Range 60 ns - 320 ms Trigger Modes Edge, Glitch, Pattern, State, Delay by Time, Delay by Events, Violation (Runt, Setup/Hold Time, Pulse Width, Transition), Video, Line Minimum Pulse Width (internal, external) 1 ns at > 1.0 div 500 ps at > 1.0 div 500 ps at > 1.0 div Video Triggering 525 lines/60 Hz (NTSC), 625 lines/50 Hz (PAL), 875 lines/60 Hz; Field 1 or 2, any line Display Display 8.4 inch diagonal color active matrix LCD module incorporating amorphous silicon TFTs Active Display Area 6.73" x 5.04" (33.92 sq. in.) / 171 mm x 128 mm (21,888 sq. mm) Display Resolution 640 pixels horizontally x 480 pixels vertically Persistence Minimum, Variable (up to 6 levels of gray scale, 100 ms to 40 s), Infinite, Color Graded Waveforms/sec \> 2,100 Vpp Measurements/sec \> 130 Measurements Automatic Parametrics 27 automatic measurements: Vpp, Vmin, Vmax, Vavg, Vamptd, Vbase, Vtop, Vrms, Preshoot, Overshoot, Vupper, Vmiddle, Vlower, Rise Time, Fall Time, Period, Frequency, Positive Width, Negative Width, Duty Cycle, Delta Time, Tmax, Tmin, FFT Frequency, FFT Magnitude, FFT Delta Frequency, FFT Delta Magnitude. Over HP-IB only: VTime, TVolts Measurement Toolbar 16 Drag and Drop automatic measurement icons Waveform Math 4 functions f1-f4: Add, Subtract, Multiply, Divide, Invert, Magnify, Vs, Min, Max, Integrate, Differentiate, FFT Magnitude FFT Frequency Range 54820A/25A: dc to 1 GHz; 54810A/15A: dc to 500 MHz 2 channel mode: dc to 2 GHz; 4 channel mode: dc to 1 GHz 2 channel mode: dc to 4 GHz; 4 channel mode: dc to 2 GHz FFT Signal-to-Noise Ratio 70 dB at 32K memory depth FFT Window Modes Hanning, Flattop, Rectangular Computer System / Storage **Important:** Maximum input voltage: ±100 V (dc + ac, ac<10 kHz) at 1 MΩ, and 5 Vrms at 50 Ω, both CAT I per the datasheet.**Important:** Runt pulse trigger is standard on models 54835A/54845A; on models 54810A/54815A/54820A/54825A it is optional (Option 015).**Important:** Specifications are valid after a 30-minute warm-up period, and ±10°C (models 54810A/15A/20A/25A) or ±5°C (models 54835A/45A) from firmware calibration temperature.Recommended pairing: use the 1152A 2.5 GHz, 0.6 pF active probe with the 54845A for non-intrusive probing of high-frequency signals, as called out in the datasheet's probe compatibility table. ## 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 - 490.0 USD - **Vendor:** Agilent Technologies - **Type:** Dig Oscilloscope - **Tags:** Agilent, Agilent Keysight, Digital, Manufacturers, Oscilloscopes, product_manual_group_1, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 210.00 USD | In stock | | NIST Traceable with Full Data | 350.00 USD | In stock | | ISO IEC 17025 Accredited | 490.00 USD | In stock | ## Images - Agilent 54825A 500 MHz 4-Channel Infiniium Oscilloscope (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/54825a-agilent-digital-oscilloscope-used) > Updated: 2026-05-30