The Keysight Agilent 54642A is a 2-channel, 500 MHz digital storage oscilloscope (DSO) featuring the patented MegaZoom deep memory technology. It offers a 2 GSa/s maximum sample rate, 8 MB of deep memory, and a high-definition display with 32 levels of intensity. With standard serial triggers for I²C, SPI, LIN, CAN, and USB, plus built-in floppy, RS-232, and parallel ports, the 54642A delivers high-performance analysis capabilities with a fast 25 million vectors/second update rate.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Built-in Floppy drive, RS-232, and Parallel (Centronics) ports; optional GPIB and LAN via expansion modules |
| Display | 5.7-inch monochrome LCD with 32 levels of intensity, 320 × 240 resolution |
| Real-Time Clock | Built-in, battery-backed (tracks date and time for file saving) |
| Recommended Calibration Interval | 1 year |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 - 240 VAC (±10%), 47 - 440 Hz, 110 W maximum |
| Operating Temperature | 0 to +55 °C |
| Dimensions (W×H×D) | 322.6 mm × 172.7 mm × 317.5 mm |
| Weight | 4.3 kg |
Vertical System (Analog Channels)
| Parameter | Value |
|---|---|
| Analog Bandwidth (-3 dB) | 500 MHz |
| Calculated Rise Time (10% to 90%) | ~700 ps |
| Number of Input Channels | 2 |
| Input Coupling | AC, DC |
| Input Impedance | 1 MΩ ±1% || 13 pF, or 50 Ω ±1% |
| Vertical Sensitivity Range | 2 mV/div to 5 V/div (1 MΩ), 2 mV/div to 1 V/div (50 Ω) |
| Vertical Resolution (A/D Converter) | 8 bits |
| DC Gain Accuracy | ±2.0% of full scale |
| Maximum Input Voltage | CAT I 400 V (DC + peak AC), CAT II 300 V (DC + peak AC) on 1 MΩ; 5 Vrms on 50 Ω |
| Hardware Bandwidth Limiters | 20 MHz selectable |
Horizontal System & Acquisition
| Parameter | Value |
|---|---|
| Maximum Real-time Sample Rate (Single-Channel) | 2 GSa/s |
| Maximum Real-time Sample Rate (Multi-Channel) | 1 GSa/s per channel |
| Maximum Record Length (Memory Depth) | 8 MB (single-channel), 4 MB (dual-channel) |
| Time Base Range | 500 ps/div to 5 s/div |
| Time Base Accuracy | ±0.002% (±20 ppm) |
Trigger System
| Parameter | Value |
|---|---|
| Trigger Sources | Channel 1, Channel 2, Line, External |
| Trigger Modes | Auto, Normal, Single |
| Trigger Coupling | DC, AC, LF Reject, HF Reject, Noise Reject |
| Trigger Sensitivity | 0.5 div or 5 mV (DC to 100 MHz), 1.0 div or 10 mV (100 MHz to 500 MHz) |
| Trigger Level Range | ±8 div from center of screen |
| Trigger Holdoff Range | 60 ns to 10 s |
| Standard Trigger Types | Edge, Pulse Width, Pattern, TV, Sequence |
| Advanced and Protocol Trigger Types | I²C, SPI, LIN, CAN, USB |
Acquisition Modes & Signal Processing
| Parameter | Value |
|---|---|
| Acquisition Modes | Normal, Peak Detect, Average |
| Waveform Update Rate | 25 million vectors/sec |
| Waveform Math Operators | Addition, Subtraction, Multiplication, FFT |
| FFT Window Types | Hanning, Flat Top, Rectangular |
Measurements & Analysis
| Parameter | Value |
|---|---|
| Automatic Voltage Measurements | Vpp, Vmax, Vmin, Vtop, Vbase, Vamp, Vavg, Vrms |
| Automatic Time and Frequency Measurements | Period, Frequency, Rise Time, Fall Time, +Width, -Width, Duty Cycle |
| Cursor Measurements | Manual, Track, Auto-measure; Voltage (ΔV) and Time (ΔT, 1/ΔT) |
Display & User Interface
| Parameter | Value |
|---|---|
| Waveform Persistence Settings | Off, Infinite |
Input/Output Interfaces
| Parameter | Value |
|---|---|
| External Trigger Input | 1 MΩ, Max input 400 V (DC + peak AC) |
| Trigger Output / Calibrator Output | Amplitude ~5 V into open circuit, frequency ~1.2 kHz |
Environmental & Compliance
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +70 °C |
| Operating Humidity Range | 95% RH at 40 °C (non-condensing) |
| Operating Altitude | Up to 4,600 m (15,000 ft) |
| Safety Certifications | CSA C22.2 No. 1010.1, EN 61010-1 / IEC 61010-1 |
| Electromagnetic Compatibility (EMC) | IEC 61326-1, EN 61326-1, CISPR 11, ICES-001 |
Accessories & Ordering Options
| Parameter | Value |
|---|---|
| Standard Included Probes | Two 10073C 10:1 passive probes with AutoProbe ID |
| Localization Support | Quick Help in 9 languages |
Vertical System
| Parameter | Value |
|---|---|
| Channel-to-Channel Isolation | > 40 dB from DC to 500 MHz |
| Vertical Offset Range | ±2 V (1 mV/div to 100 mV/div), ±200 V (101 mV/div to 5 V/div) |
| Vertical Dynamic Range | ±8 divisions from center of screen |
Storage
| Parameter | Value |
|---|---|
| Internal Storage | 3.5-inch floppy disk drive, 1.44 MB MS-DOS format |
Interfaces
| Parameter | Value |
|---|---|
| Standard I/O Ports | RS-232 (9-pin D-sub male, up to 57.6 kbps), Parallel (Centronics printer port) |
| Optional Interface Modules | N2757A GPIB, N2758A USB |
Power
| Parameter | Value |
|---|---|
| Line Voltage Range | 100 V - 240 V AC (±10%, auto-ranging) |
| Line Voltage Frequency | 47 Hz - 440 Hz |
| Maximum Power Consumption | 100 W |
Display
| Parameter | Value |
|---|---|
| Display Type | Monochrome electromagnetic deflection CRT with 256 levels of intensity |
| Display Diagonal Size | 17.8 cm (7 inches) |
| Display Graticule | 8 × 10 divisions |
Environmental
| Parameter | Value |
|---|---|
| Operating Vibration | 0.21 g rms (5 Hz to 500 Hz, 10 min/axis, 3 axes) |
| Non-operating Vibration | 2.09 g rms (5 Hz to 500 Hz, 10 min/axis, 3 axes) |
| Operating Shock | 15 g (11 ms duration, half-sine pulse) |
Technology
Digital Storage Oscilloscope (DSO)
Applications
Electronic Design, Troubleshooting, Embedded Serial Bus Debugging