General Electronic Measurement Instruments
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| Brand | Topo |
|---|---|
| Model | WGN-1 |
| Detector Type | Silicon Photodiode |
| Spectral Range | 400–1050 nm |
| Power Range | 2 µW – 200 mW |
| Active Area | 1 cm² |
| Display | 3.5-digit LCD |
| Resolution | 0.001 µW |
| Calibration Wavelength | 632.8 nm |
| Measurement Uncertainty | ±3% ±1 digit |
| Operating Temperature | 0–35 °C |
| Relative Humidity | ≤80% RH (non-condensing) |
| Power Supply | 220 V, 50 Hz, 10 W |
| Compliance | Designed for ISO/IEC 17025 traceable calibration workflows |
| Brand | Vaunix |
|---|---|
| Origin | USA |
| Model | LMS-103 |
| Frequency Range | 5–10 GHz |
| Phase Noise | –81 dBc/Hz @ 10 kHz, –89 dBc/Hz @ 100 kHz offset |
| Frequency Resolution | 100 Hz |
| Frequency Switching Time | 0.1 ms |
| Output Power Range | +10 to –40 dBm |
| Spurious Signals | –80 dBc (typ.) |
| Harmonics | –20 dBc (typ.) |
| Reference Input | 10 MHz (standard) |
| Sweep Mode | Linear (standard), Triggered Sweep (optional) |
| Pulse Modulation | Optional |
| Control Interface | USB 2.0 (SCPI-compliant) |
| Key | Brand: Xutongyongfu |
|---|---|
| Model | XT-108 |
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Manufacture | China |
| Display | Analog Pointer Gauge |
| Alarm | Audible and Visual (LED + Buzzer) |
| Operating Temperature | -20 °C to 40 °C |
| Altitude Limit | < 1000 m |
| Relative Humidity | < 85% RH |
| Threshold Alarm Setpoint | 10 V DC (adjustable via front-panel potentiometer) |
| Brand | Yingbo Science & Instrument |
|---|---|
| Origin | Shanghai, China |
| Model | GaN Wafer-Level Dynamic Power Testing System |
| Application | Dynamic Parameter Characterization of GaN Power Devices under Switching Operation |
| Temperature Range | 25 °C to 175 °C |
| Gate Voltage Range | –12 V to +12 V (continuously adjustable) |
| Switching Frequency Range | 10 kHz to 500 kHz |
| Duty Cycle Range | 10% to 90% |
| Minimum Pulse Width | 1 µs |
| Measurement Modes | Dynamic R<sub>DS(on)</sub> (HSW/ZVS), Dynamic V<sub>SD</sub>, Dynamic V<sub>th</sub>, Pulse I–V, Dynamic HTOL/SALT |
| Brand | YIXIST |
|---|---|
| Model | YEL-3055 / YEL-3001 / YEL-3002 / YEL-3004 |
| Output Voltage | ±15 V ±3% (YEL-3055) |
| Ripple | < 1 mV<sub>RMS</sub> (YEL-3055) |
| Recovery Time | < 100 µs (YEL-3055) |
| Temperature Coefficient | < 300 ppm/°C (YEL-3055) |
| Max Output Current | 0.3 A / 0.1 A per channel (YEL-3055) |
| Adjustable Voltage Ranges | 0–6.3 V / −4.5–0 V or −4.5–30 V (YEL-3001) |
| Current Measurement Range | 10<sup>−8</sup> A to 10<sup>−13</sup> A (YEL-3004) |
| Input Voltage Range | 100–240 VAC |
| Zero Drift | ≤0.2% (YEL-3004) |
| Brand | YOKOGAWA |
|---|---|
| Model | AQ6370D |
| Wavelength Range | 600–1700 nm |
| Wavelength Accuracy | ±0.01 nm |
| Wavelength Resolution | 0.02 nm (min) |
| Dynamic Range | 78 dB (typ.) |
| Power Range | +20 to –90 dBm |
| Sweep Time | 0.2 s (for 100 nm span) |
| Fiber Compatibility | Single-mode and multimode fiber |
| Brand | Zhonghang Dingli |
|---|---|
| Origin | Beijing, China |
| Model | QS37a |
| High-Voltage Source | 0–2500 V (50 Hz), 0–20 mA |
| Built-in Standard Capacitor | 100 pF (tanδ < 5×10⁻⁵) |
| Measurement Principle | Schering Bridge (Classical Westinghouse/Schering configuration, “direct connection” method for ground-insulated specimens) |
| Capacitance Range (Cₙ = 100 pF, R₄ = 3183.2 Ω) | 40 pF – 20,000 pF ±(0.5% Cₓ + 2 pF) |
| Dissipation Factor Range (tanδ) | 0–1 ±(1.5% tanδₓ + 1×10⁻⁴) |
| Alternate Range (R₄ = 318.3 Ω) | Cₓ = 4–2000 pF |
| Electrode System | Three-terminal guarded electrode per GB/T 1409—2006 (IEC 60250), measuring electrode Ø50 mm (19.6 cm²), guard gap adjustable 0–5 mm, null tanδ ≤ 3×10⁻⁵ at 2000 V |
| Operating Ambient | 20 ± 5 °C, RH 65 ± 5% |
| Dimensions | Ø210 × H180 mm |
| Weight | 6 kg |
| 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 |