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Why Compare These Two Models?
The ZOYI ZT-703S and FNIRSI 2C23T are both 3-in-1 handheld oscilloscopes featuring dual channels, signal generators, and multimeter functions. These similarities often make it hard for users to decide which one to purchase. In this article, we’ll compare their design, features, user interface, and specifications in detail, along with pricing and accessory differences.
1, Packaging and Accessories
The FNIRSI 2C23T comes with a larger box featuring a sleek gold foil design and foam wrapping for extra protection. Inside, the items are organized in two layers: the oscilloscope is on top, while accessories and manuals are in the bottom layer. In contrast, the ZOYI ZT-703S packaging is compact and minimalistic, with a fabric pouch holding the device and its accessories.
Comparison Table
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| Aspect | ZOYI ZT-703S | FNIRSI 2C23T |
| Packaging | Compact, fabric pouch | Larger, gold foil design, foam wrap |
| Accessories | 2 oscilloscope probes, 1 multimeter probe, Type-C cable | 2 oscilloscope probes, 1 multimeter probe, Type-C cable, DDS output cable, temperature probe |
2, Design and Display
The ZOYI ZT-703S is heavier at 388g, using dual-molded injection for durability, with soft TPE parts for protection. The FNIRSI 2C23T, at 300g, opts for a lighter blue-and-black snap-together design. The ZT-703S boasts a significantly larger and clearer display, ideal for analyzing detailed waveforms. Despite the larger screen, its 3400mAh battery provides longer life compared to FNIRSI’s 3000mAh.
Comparison Table
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| Aspect | ZOYI ZT-703S | FNIRSI 2C23T |
| Weight | 388g | 300g |
| Material | Dual-molded injection, soft TPE parts | Snap-together blue and black design |
| Screen Size | Larger and clearer | Smaller |
| Battery Life | 3400mAh | 3000mAh |
3, Features and User Interface
The ZOYI ZT-703S emphasizes simplicity with a user-friendly interface where all settings can be adjusted on the main screen. It allows quick switching between the oscilloscope and multimeter with a single button. The FNIRSI 2C23T, on the other hand, starts with a menu where users must choose their desired function (oscilloscope, multimeter, or signal generator), making it slightly less intuitive.
Comparison Table
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| Aspect | ZOYI ZT-703S | FNIRSI 2C23T |
| Interface | "Turn on and measure" simplicity | Menu-based function selection |
| Button Count | 13 buttons | 15 buttons |
| Quick Switching | One-button switch for oscilloscope/multimeter | No direct switching |
4, Oscilloscope Performance Comparison
The ZOYI ZT-703S outperforms the FNIRSI 2C23T in terms of bandwidth, sampling rate, and functionality. It offers a 50MHz bandwidth, 280MSa/s sampling rate, and support for Y-T and X-Y display modes, including Lissajous figures. The FNIRSI 2C23T, with its 10MHz bandwidth and 10MSa/s sampling rate, lacks X-Y mode and waveform persistence features.
Comparison Table
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| Aspect | ZOYI ZT-703S | FNIRSI 2C23T |
| Bandwidth | 50MHz | 10MHz |
| Sampling Rate | 280MSa/s (high speed) | 10MSa/s |
| Display Modes | Y-T, X-Y | Y-T only |
| Waveform Persistence | Yes | NO |
5, Multimeter Features
The FNIRSI 2C23T has an additional temperature measurement feature, which the ZOYI ZT-703S lacks due to technical issues. However, the ZOYI offers a higher resolution of 25,000 counts, while the FNIRSI appears to support 9,999 counts based on the manual.
Comparison Table
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| Aspect | ZOYI ZT-703S | FNIRSI 2C23T |
| Temperature Measurement | No | Yes |
| Resolution | 25,000 counts | 9,999 counts |
6, Signal Generator Function
The FNIRSI 2C23T surpasses the ZOYI ZT-703S in signal generator functionality. It can generate waveforms up to 2MHz across all types, whereas the ZOYI is limited to 500kHz for square waves and even lower for other waveforms. The FNIRSI also includes a dedicated waveform output probe.
Comparison Table
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| Aspect | ZOYI ZT-703S | FNIRSI 2C23T |
| Maximum Frequency | 500kHz (square wave) | 2MHz (all waveforms) |
| Waveform Probe | No | Yes |
7, Safety and Detailed Design
The ZOYI ZT-703S has an 8mm probe terminal spacing, suitable for standard components, while the FNIRSI’s 3mm spacing may be less practical for some users. Despite the shorter spacing, FNIRSI is rated for 750V CAT IV, higher than ZOYI’s 600V CAT IV. Both models use Type-C charging ports, but FNIRSI also includes a hanging hole for added convenience.
Comparison Table
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| Aspect | ZOYI ZT-703S | FNIRSI 2C23T |
| Probe Terminal Spacing | 8mm | 3mm |
| Safety Rating | 600V CAT IV | 750V CAT IV |
| Additional Features | No hanging hole | Hanging hole included |
By reviewing the detailed comparison, you can now make an informed decision based on your priorities, whether it’s the ZOYI ZT-703S with its superior oscilloscope features or the FNIRSI 2C23T with its advanced signal generator and temperature measurement capabilities.
