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YOKOGAWA DLM2022
Product Overview:
The DLM2022 is a 2-channel mixed signal oscilloscope from Yokogawa’s DLM2000 series, combining 2 analog channels (200 MHz bandwidth) with 16 digital logic channels in a single compact instrument. It is designed for embedded system debugging, power electronics analysis, automotive electronics testing, and education.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Analog Channels | 2 channels |
| Digital Channels | 16 channels (simultaneous logic input) |
| Analog Bandwidth | 200 MHz (-3 dB) |
| Analog Sampling Rate | 2.5 GS/s (Giga-samples per second) on each analog channel |
| Analog Memory Depth | 10 Mpoints per channel (standard); 100 Mpoints (optional) |
| Digital Sampling Rate | 2.5 GS/s (shared with analog channels) |
| Vertical Resolution (Analog) | 8-bit (with hardware averaging for 12-bit effective resolution) |
| Timebase Range | 1 ns/div to 100 s/div |
| Trigger Types | Edge, Pulse Width, Runt, Setup/Hold, Timeout, I²C, SPI, UART, CAN, LIN, Parallel Bus |
| Display | 8.4-inch WVGA TFT color LCD (800 × 600 pixels) |
| Interfaces | USB 2.0 (Device & Host), GPIB (IEEE 488.2), RS-232C, Ethernet (LXI compliant) |
| Power Supply | 100–240 VAC, 50/60 Hz, 30 VA |
| Dimensions | 340 mm (W) × 152 mm (H) × 200 mm (D) |
| Weight | Approximately 3.5 kg |
| Safety Standard | IEC 61010-1 CAT III 300V / CAT II 600V |
Functional Features:
- 2 analog + 16 digital channels simultaneously — captures analog waveforms and digital logic states at the same time
- Serial bus decode: built-in decoder for I²C, SPI, UART/RS-232, CAN, LIN, and parallel bus protocols — displays decoded data as text overlay on the waveform
- Waveform math: add, subtract, multiply, divide, FFT, integrate, differentiate, and custom expressions
- History function: stores up to 10,000 waveforms for comparison and statistical analysis
- Pass/Fail testing: mask testing with automatic pass/fail judgment for production testing
- Zoom and Pan: deep zoom up to 100× on any portion of the waveform
- Persistence display: shows waveform distribution over time (infinite persistence mode)
Working Principle:
The DLM2022 uses high-speed ADCs (2.5 GS/s, 8-bit) to digitize analog input signals on both channels simultaneously. The 16 digital channels use comparator-based logic input circuits sampling at the same 2.5 GS/s rate, synchronized to the analog acquisition clock. All data is stored in a shared 10 Mpoint memory buffer (deep memory option provides 100 Mpoints). The trigger system can be configured to trigger on analog edge events, digital pattern matches, or serial bus conditions. The protocol decoders analyze the digital bitstream in real-time, extracting address, data, and error frames from I²C, SPI, UART, CAN, LIN, and parallel bus signals, displaying them as ASCII text overlays directly on the time-domain waveform.
Performance Parameters:
| Parameter | Value |
|---|---|
| Rise Time (Analog) | 1.75 ns (typical, 200 MHz bandwidth) |
| Vertical Sensitivity | 1 mV/div to 10 V/div (1-2-5 sequence) |
| Maximum Input Voltage | 400 Vpeak (1:1 probe); 40 Vpeak (10:1 probe) |
| Input Coupling | DC, AC, GND |
| Input Impedance | 1 MΩ // 20 pF (typical) |
| FFT Resolution | Up to 1 Mpoints FFT with Hanning, Flat-Top, Rectangular windows |
| Timing Accuracy (between channels) | ±100 ps (at 1 ns/div or faster) |
Advantages:
- 200 MHz bandwidth at 2.5 GS/s — captures fast transients in power electronics and digital circuits
- 16 digital channels + serial decode — replaces logic analyzer for embedded debugging
- Compact benchtop form factor — fits on standard lab bench
- LXI compliant Ethernet — enables remote control and automated test systems
- Deep memory (10 Mpoints) — captures long-duration events at high sample rate
Applicable Industries:
- Automotive Electronics — CAN/LIN bus debugging, ECU testing
- Power Electronics — inverter switching waveform analysis, EMI debugging
- Embedded Systems Development — I²C/SPI/UART protocol validation
- Education & Research — university laboratory, electronics coursework
- Industrial Electronics — motor drive analysis, PLC I/O timing verification
Installation Requirements:
- Place on a flat, stable, vibration-free bench with 100 mm clearance on all sides for ventilation
- Connect ground clip of probe to earth ground before connecting to circuit under test
- Use 10:1 passive probes (supplied) for voltages above 40 Vpeak
- Connect Ethernet cable for LXI remote control if required
Usage Precautions:
- Maximum input voltage: 400 Vpeak (CAT III 300V) — exceeding this may destroy the input amplifier
- Always connect ground lead before signal lead when probing live circuits
- Do not exceed 200 MHz input frequency — signals above bandwidth will be attenuated and distorted
- Use proper probe compensation before measurements — connect probe to built-in calibration output (1 kHz square wave) and adjust compensation trimmer until waveform is flat-topped
- Do not block ventilation slots — overheating causes measurement drift and potential damage
