NIPPON HAKUYO electronics ltd.
NIPPON HAKUYO ELECTRONICS Master Clock
Manufacturer: NIPPON HAKUYO electronics ltd.
Product: Master Clock
Product List
| Model | Description |
|---|---|
| NMC-20F | Master Clock (Built-in type) |
| NMC-20S | ‘Master Clock (Wall type) |
Features: Newly Developed Marine Clock System
- A unique communication method that accurately tracks time has been adopted. RS-422-based, 2-wire configuration.
- The sub-clock has been made lighter (compared to conventional models) and designed for easier installation than ever before.
- The decorative clock features a modern circular design, emphasizing visibility that allows it to be clearly recognized even from a distance.
Marine Clock Systerm Diagram
Specifications for Shipboard Clock Equipment
| No. | Specification | Details |
|---|---|---|
| 1. | Name | Shipboard Clock |
| 2. | Model | NMC-20F (Flush Mount) / NMC-20S (Wall Mount) |
| 3. | Power Supply Voltage | AC100~240V 50/60Hz or DC24V ±10% |
| 4. | Power Consumption | 40W or less 1.7A or less (during DC operation) |
| 5. | Crystal Oscillation Frequency | 32.768kHz |
| 6. | Accuracy | ±0.2 seconds/day |
| 7. | Precision Guarantee Range | 0°C ~ 40°C |
| 8. | Operating Temperature Range | -20°C ~ 60°C (LCD Display: 0°C ~ 50°C) |
| 9. | Storage Temperature Range | -25°C ~ 70°C |
| 10. | Operating Humidity Range | 93% @ 40°C, no condensation |
| 11. | Monitoring Modes | ① Analog Meter: Standard Time (UTC), Local Time (LTC) ② Digital Monitor: Time monitoring, setting display, error warning display |
| 12. | Output Signals | ① Time signal data Output capacity: Max. 140 devices (MPYC-2/1.2km per system, up to 40 devices per system) ② Pulse signals 30 types including time signal, 2-wire (L4, L5), 200mA or less Error signal (LA): Reverse polarity signal (LR): Each under 100mA COM (L.C. +DC24V) ③ Error alarm signal C contact (AC250V 3A / DC30V 3A) |
| 13. | Digital Signal Output | RS-485 Compliant with GZQZDA:NMEA0183 Ver. 2.0~2.3 |
| 14. | GPS Signal Input | RS-422 Compliant with GZPDA:NMEA0183 Ver. 2.0~2.3 |
| 15. | Dimensions | NMC-20F: W340 × H290 × D118 NMC-20S: W300 × H280 × D124 |
| 16. | Material | Casing: SPCC, Coating: Munsell N2.5 |
| 17. | Weight | Approx. 6kg |
Specifications for Shipboard Sub Clock Equipment
| No. | Specification | Details |
|---|---|---|
| 1. | Name | Shipboard Sub Clock |
| 2. | Model | NSC-3S, NSC-3SI, NSC-3SI-D (Wall Mount) NSC-3W, NSC-3W-U (Drip-proof Wall Mount) NSC-3F, NSC-3FI (Flush Mount) NSC-3B (Double-sided Wall Mount) NSC-2D (Decorative) NSC-3S-UTC, NSC-3SR-UTC (Wall Mount) NSC-3F-UTC, NSC-3FR-UTC (Flush Mount) |
| 3. | Operation | Two-wire differential signal control |
| 4. | Dial | Wall Mount, Drip-proof Wall Mount, Flush Mount: White Decorative: Black |
| 5. | Characters | Wall Mount, Drip-proof Wall Mount, Flush Mount: Black Decorative: Silver |
| 6. | Hands | Wall Mount, Drip-proof Wall Mount, Flush Mount: Black (Hour/Minute Hands), Red (Second Hand) Decorative: Silver (Hour/Minute Hands) |
| 7. | Case | Resin, Black |
| 8. | Frame | Resin, Silver |
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