The Keysight 16821A is a portable logic analyzer with a built-in 48-channel pattern generator, offering digital designers a single instrument for simultaneous stimulus and response measurements. Featuring 68 logic acquisition channels and up to 32 M memory depth, the 16821A makes it possible to debug complex digital systems, capture long-duration events, and trace root-cause system errors. Its large 15-inch color display provides high visibility across extensive channel counts, with optional touchscreen integration for streamlined navigation.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | LAN (10/100/1000 Base-T), 6 x USB 2.0, VGA, Trigger In/Out |
| Display | 15-inch color active matrix LCD, 1024 x 768 (XGA) resolution, optional touch screen |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 - 240 V AC (±10%), 47 - 63 Hz, 615 W max |
| Operating Temperature | 0 °C to +40 °C |
| Dimensions (W×H×D) | 424 mm x 383 mm x 290 mm |
| Weight | 14.1 |
Logic Analyzer Performance
| Parameter | Value |
|---|---|
| Logic Analyzer Channels | 68 |
| Maximum State Clock Rate | 250 MHz (standard), 500 MHz (with Option 500) |
| Maximum Timing Sample Rate (Half-Channel) | 1.0 GHz |
| Maximum Timing Sample Rate (Full-Channel) | 500 MHz |
| High-Speed Timing Zoom (Sample Rate) | 4.0 GHz (250 ps) |
| High-Speed Timing Zoom (Memory Depth) | 64K samples |
| Logic Analyzer Memory Depth Options | 1 M, 4 M, 8 M, 16 M, 32 M vectors |
| Input Threshold Voltage Range | -3.0 V to +5.0 V (10 mV increments) |
| Minimum Input Voltage Swing | 250 mV |
| Setup/Hold Time Window | 1.0 ns (with Option 250), 625 ps (with Option 500) |
| Minimum State Pulse Width | 1.5 ns (with Option 250), 1.25 ns (with Option 500) |
| Trigger Sequencer Maximum Speed | 250 MHz (with Option 250), 450 MHz (with Option 500) |
| Predefined Trigger Macros | 13 |
Pattern Generator Performance
| Parameter | Value |
|---|---|
| Pattern Generator Channels | 48 |
| Maximum Pattern Generator Clock Rate | 300 MHz (half-channel), 150 MHz (full-channel) |
| Pattern Generator Memory Depth Options | 2 M vectors (Option 002), 16 M vectors (Option 016) |
| Minimum Clock Rate | 1.4 Hz |
Triggering & Signal Processing
| Parameter | Value |
|---|---|
| Number of Trigger Levels | 16 |
System & Storage
| Parameter | Value |
|---|---|
| Operating System | Windows XP Professional (original) or Windows Embedded Standard 7 |
Interfaces & Connectivity
| Parameter | Value |
|---|---|
| USB Host Ports | 6 x USB 2.0 (2 front, 4 rear) |
| LAN Interface Speed | 10/100/1000 Mb/s (Gigabit Ethernet) |
| External Video Port | VGA (15-pin D-sub) |
| Trigger Output Connector | BNC |
| Trigger Input Connector | BNC |
Environmental & Physical
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +75 °C |
| Operating Altitude Limit | 3,000 meters (10,000 feet) |
| Operating Humidity Range | Up to 80% relative humidity (non-condensing) at +40 °C |
Display & Interface
| Parameter | Value |
|---|---|
| Display Resolution | 1024 × 768 (XGA) |
Computer System
| Parameter | Value |
|---|---|
| PCI Expansion | 1 low-profile PCI slot |
Pattern Generator
| Parameter | Value |
|---|---|
| Pattern Generator Data Channels | 48 |
| Pattern Generator Clock Channels | 4 (2 single-ended, 1 differential, 1 external) |
| Pattern Generator Output Impedance | 50 Ω nominal |
Triggering
| Parameter | Value |
|---|---|
| Trigger Pattern Resources | 16 |
| Trigger Range Resources | 4 |
| Trigger Edge and Glitch Resources | 2 |
| Trigger Timers and Counters | 2 |
Hardware Connectivity
| Parameter | Value |
|---|---|
| Logic Analyzer Cable Connector Type | 90-pin |
| Pattern Generator Cable Connector Type | 40-pin |
Computer System Details
| Parameter | Value |
|---|---|
| System Processor | Intel Celeron 2.0 GHz or Intel Celeron 2.93 GHz (vintage dependent) |
| System Memory | 1 GB or 2 GB (vintage dependent) |
| Hard Drive Capacity | 80 GB or larger, SATA |
Environmental & Reliability
| Parameter | Value |
|---|---|
| Acoustic Noise | Lpa < 50 dBA (typical at 25 °C) |
| Operating Vibration | Random vibration, 5 to 500 Hz, 0.3 g (rms) |
| Non-operating Vibration | Random vibration, 5 to 500 Hz, 2.41 g (rms) |
| Non-operating Shock | 30 g, half-sine, 11 ms duration |
Regulatory & Standards
| Parameter | Value |
|---|---|
| Safety Standards | IEC 61010-1, CAN/CSA-C22.2 No. 61010-1, UL 61010-1 |
| EMC Standards | IEC 61326-1, EN 61326-1, ICES-001, AS/NZS CISPR 11 |
Technology
Logic Analysis & Pattern Generation
Applications
Digital System Debug, Protocol Analysis, Hardware Stimulus-Response Testing