Tektronix 2400 Series Oscilloscopes
6 models with full specifications from Tektronix.
The Tektronix 2400 Series consists of high-performance, four-channel analog oscilloscopes designed for laboratory, engineering, and field service applications. These instruments are recognized for their robust design, reliable operation, and CRT displays that feature integrated on-screen readouts and cursor measurements. Operating across a temperature range of -15 °C to +55 °C and utilizing a universal 90 to 250 V AC power supply, these tools deliver consistent performance in diverse environments. While sharing a common physical layout, members of the 2400 Series differ primarily in bandwidth capabilities, rise times, and CRT technologies. The lineup ranges from the 150 MHz Tektronix 2445 and 2445B to the 400 MHz Tektronix 2465B and 2467B, allowing technical buyers to select the precise performance required for their specific testing needs.
- Number of Channels
- 4
- Bandwidth Range
- 150 MHz to 400 MHz
- Operating Temperature
- -15 °C to +55 °C
- Power Supply
- 90 V to 250 V AC (48 Hz to 440 Hz)
- Standard Weight
- 9.3 kg
Models in this series
| Model | Type | Display | Interfaces | Number of Channels |
|---|---|---|---|---|
| 2465B | Analog | 80 × 100 mm CRT with On-Screen Readout | GPIB (Option 10) | 4 |
| 2467B | Analog | Microchannel Plate (MCP) CRT with on-screen readout, 8 × 10 divisions | GPIB (optional, via Option 10) | 4 |
| 2465A | Analog | CRT, 8×10 cm graticule, with on-screen readout and cursors | GPIB (via Option 10) | 4 |
| 2445B | Analog | 8 x 10 cm CRT with internal graticule and on-screen readouts | GPIB (Option 10) | 4 |
| 2465 | Analog | 8 x 10 cm CRT with internal graticule and digital readouts | Optional GPIB (IEEE-488) via Option 10 | 4 |
| 2445 | Analog | CRT (Green Phosphor, P31, with CRT Readout) | GPIB (optional, Option 10) | 4 |
Bandwidth and Rise Time Performance
The models within the Tektronix 2400 Series are categorized by their analog bandwidth capabilities, ensuring there is a suitable option for different signal speeds:
- 150 MHz Bandwidth: The Tektronix 2445 and Tektronix 2445B serve general-purpose requirements with a rise time of 2.33 ns.
- 300 MHz to 350 MHz Bandwidth: The Tektronix 2465 provides 300 MHz bandwidth and a 1.17 ns rise time. The Tektronix 2465A extends this to 350 MHz bandwidth, achieving a calculated rise time of 1 ns.
- 400 MHz Bandwidth: The Tektronix 2465B and Tektronix 2467B represent the highest bandwidth tier at 400 MHz, boasting an 875 ps rise time for analyzing high-speed analog signals.
Display and CRT Technologies
A key feature of the 2400 Series is the integrated CRT display with on-screen readouts and cursors, which simplifies reading measurements directly on the screen. Most models, such as the Tektronix 2465B, Tektronix 2465A, Tektronix 2445B, Tektronix 2465, and Tektronix 2445, utilize standard CRT screens with internal graticules (typically 8 x 10 cm or 80 x 100 mm).
In contrast, the Tektronix 2467B features a specialized Microchannel Plate (MCP) CRT display. This technology provides an extremely high visual writing speed of up to 4 div/ns. This makes the 2467B ideal for engineers who need to identify and analyze rare, fast-transient anomalies or high-frequency glitches that standard CRTs cannot easily illuminate.
Channel Configurations and Input Capabilities
All models in the series offer a four-channel configuration, but the input characteristics differ between channels:
- Channels 1 and 2: These primary channels offer a deflection factor range of 2 mV/div to 5 V/div. They feature selectable input coupling (AC, DC, and GND) and selectable input impedance of either 1 MΩ (in parallel with 15 pF) or 50 Ω. The 50 Ω mode supports a maximum input voltage of 5 V RMS, while the 1 MΩ mode supports up to 400 V (DC + peak AC).
- Channels 3 and 4: These secondary channels are designed with deflection factors of 0.1 V/div and 0.5 V/div. On models like the Tektronix 2465A, Tektronix 2445B, and Tektronix 2445, these channels are limited to DC-only coupling and have a fixed input impedance of 1 MΩ in parallel with 15 pF.
Frequently asked questions
- What is the primary difference between the Tektronix 2465B and the Tektronix 2467B?
- While both are 400 MHz, four-channel instruments, the Tektronix 2467B features a Microchannel Plate (MCP) CRT display that provides a visual writing speed of up to 4 div/ns, making it easier to observe rare, fast-transient anomalies.
- Do the 2400 Series oscilloscopes support GPIB connectivity?
- Yes, models such as the Tektronix 2465B, Tektronix 2465A, Tektronix 2445B, and Tektronix 2445 support GPIB connectivity via Option 10.
- Are the secondary channels identical to the primary channels on these models?
- No. Channels 1 and 2 offer a wider deflection range (2 mV/div to 5 V/div) and selectable 1 MΩ or 50 Ω input impedance. Channels 3 and 4 have fixed deflection factors (0.1 V/div and 0.5 V/div), a fixed 1 MΩ impedance, and are restricted to DC coupling on several models like the 2465A, 2445B, and 2445.