Electronic Measurement Instruments
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| Brand | Zhonghang Dingli |
|---|---|
| Origin | Beijing, China |
| Model | QS87 / QS37 Series |
| Capacitance Range | 0.1Cₙ to 1000Cₙ (7-digit resolution) |
| tgδ Range | −110% to +110% |
| tgδ Accuracy | ≤ 0.2% rdg ± 1×10⁻⁵ |
| tgδ Resolution | 1×10⁻⁶ (1×10⁻⁷ with PC interface) |
| Test Voltage | 0–1000 kV (±1%, 4-digit display) |
| Frequency Range | 35–65 Hz (±1 Hz, 4-digit display) |
| Optional Capacitance Ratio Extender (1000 | 1 → 10⁶:1) |
| Brand | Zhonghangdingli |
|---|---|
| Origin | Beijing, China |
| Model | QS87 |
| Capacitance Range | 0.1Cₙ to 1000Cₙ (7-digit resolution) |
| tanδ Range | −110% to +110% |
| tanδ Accuracy | ≤ 0.2% rdg ± 1×10⁻⁵ |
| tanδ Resolution | 1×10⁻⁶ (1×10⁻⁷ with PC interface) |
| Test Voltage | 0–1000 kV (±1%, 4-digit display) |
| Frequency Range | 35–65 Hz (±1 Hz, 4-digit display) |
| Optional capacitance range extender extends ratio from 1000 | 1 to 10⁶:1 |
| Brand | ZOLIX |
|---|---|
| Model | BTF+ |
| Type | Continuously Tunable Optical Bandpass Filter |
| Spectral Range | 400–750 nm |
| Tuning Speed | 40 nm/s |
| Minimum Bandwidth | 10 nm |
| Maximum Bandwidth | 100 nm |
| Wavelength Accuracy | ±2 nm |
| Input/Output | Collimated Free-Space Beams |
| Polarization | Uncontrolled (Random) |
| Interface | USB 2.0 |
| Power Supply | 100–240 VAC, 50/60 Hz |
| Coupling Efficiency | ~30% |
| Compliance | CE-marked, RoHS-compliant |
| Brand | ZTWEATHER |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | ZTI-32 |
| Pricing | Upon Request |
| RF Frequency Range | 1 MHz – 6 GHz (40–44 GHz mmWave optional with adapter) |
| Signal Bandwidth | Up to 200 MHz |
| Max Fading Channels | 1024 (32×32 MIMO) |
| Max Delay Spread | 20 ms |
| Delay Resolution | 4.07 ns @ 200 MHz |
| Path Count per Channel | Up to 48 |
| Max Doppler Shift | ±5 MHz (2 Hz resolution step) |
| Fading Types | Rayleigh, Rice, Nakagami, Log-Normal, Suzuki, Jakes, Flat, Gaussian, Circular, Classical 3/6 dB, Constant, Pure Doppler, and User-Defined |
| Output Power Range | −120 dBm to −14 dBm |
| Output Level Accuracy | < ±2 dB |
| Channel Isolation | 110 dB |
| Local Clock Stability | < 0.05 ppm |
| Dimensions (W×H×D) | 600 × 850 × 600 mm |
| AC Power | 220 V, 50 Hz |
| MTBF | >5000 h |
| MTTR | <2 h |
| Management Interface | Ethernet + SCPI-compliant remote control |