LeCroy WaveRunner LT Series Oscilloscopes
4 models with full specifications from LeCroy (Teledyne LeCroy).
The LeCroy WaveRunner LT series represents a legacy family of benchtop digital oscilloscopes designed for general-purpose electronic design, debugging, and advanced waveform analysis. Offering both 2-channel and 4-channel configurations, these instruments are built around an 8-bit vertical resolution architecture. The family spans analog bandwidths from 200 MHz up to 500 MHz, making them suitable for capturing fast transient events and high-frequency signals. This guide details the similarities and key differences between the models in this series, helping technical buyers select the correct unit based on channel density, sampling speed, and acquisition memory.
- Bandwidth Range
- 200 MHz to 500 MHz
- Analog Channels
- 2 or 4
- Vertical Resolution
- 8-bit ADC
- Input Impedance
- 50 Ohm or 1 MOhm (selectable)
Models in this series
| Model | Type | Display | Input Coupling | Acquisition Modes |
|---|---|---|---|---|
| LT224 | Analog | Color CRT | AC, DC, GND | — |
| LT322 | Digital | 8.4" color TFT-LCD, 640 × 480 VGA | AC, DC, GND | Sample, Envelope, Average, Sequence (Segmented Memory) |
| LT342 | Digital | 8.4 inch Color TFT-LCD, 640 × 480 (VGA) | AC, DC, GND (1 MΩ); DC, GND (50 Ω) | Single-shot, RIS, Roll, Average, Envelope, Sequence |
| LT364L | Digital | 8.4 inch color TFT-LCD, 640 × 480 VGA resolution | AC, DC, GND | Real-time, Roll, RIS, Single-shot |
Shared Architecture and Inputs
Every model in the WaveRunner LT series shares a core analog front-end design, offering selectable input impedance of either 50 Ohm or 1 MOhm. This allows engineers to interface with standard passive probes or high-frequency 50 Ohm signal sources. The maximum input voltage is rated at 400 V on the 1 MOhm path (400 Vrms for the LT224 and 400 V max for the LT322, LT342, and LT364L) and 5 Vrms on the 50 Ohm path. All units feature an 8-bit analog-to-digital converter (ADC) for standard vertical resolution. For connectivity, standard interfaces include a 15-pin D-sub VGA output, RS-232 serial communication, and parallel printer ports, ensuring compatible integration with legacy office peripherals and external displays.
Bandwidth and Channel Options
The series is divided by bandwidth and channel count to address different signal speed and routing requirements. The LT224 operates at a 200 MHz bandwidth with 4 analog channels and a calculated rise time of 1.75 ns. For higher-frequency applications, the LT322, LT342, and LT364L all provide 500 MHz of analog bandwidth and a faster calculated rise time of 700 ps. Within the 500 MHz group, the LT322 and LT342 provide 2 input channels, whereas the LT364L provides 4 input channels, making it suitable for multi-point circuit debugging.
Sampling Rates and Memory Depth
Acquisition performance varies across the lineup. The LT224 samples at 200 MSa/s in real-time across all 4 channels, with a repetitive sampling rate of 10 GS/s and a 100 kpt record length. The 2-channel LT322 operates at a 200 MS/s real-time sampling rate. For faster single-shot captures, the LT342 upgrades this to 500 MS/s per channel. The LT364L provides the most extensive memory capabilities in the family, featuring 1 Mpts of acquisition memory per channel, which can interleave up to 2 Mpts to preserve high sampling rates over longer time windows.
Display and Physical Specifications
Physical configurations differ slightly between the oldest and newer models in the series. The LT224 is equipped with a Color CRT display. In contrast, the LT322, LT342, and LT364L feature an 8.4-inch color TFT-LCD display with a 640 x 480 VGA resolution, offering improved clarity and viewing angles. While the LT322 and LT364L share matching physical dimensions of 350 mm x 210 mm x 300 mm and a weight of 8 kg, the LT342 is slightly deeper at 363 mm and stands 211 mm high. All TFT models are rated for operation between 5 °C and 40 °C.
Frequently asked questions
- Can the bandwidth of the WaveRunner LT models be restricted?
- Yes, the 500 MHz models include hardware bandwidth limiters to reduce noise when full bandwidth is not required. The LT342 offers limits at 20 MHz and 200 MHz, while the LT364L offers limits at 25 MHz and 200 MHz.
- What are the power requirements for the WaveRunner LT series?
- The LT322, LT342, and LT364L accept AC input voltages from 90 to 250 V AC. Operating frequencies range from 45 to 66 Hz (up to 440 Hz for the LT322). Power consumption is rated up to 150 W for the LT322, 150 VA for the LT342, and 200 VA for the LT364L.