SF2004
Daily Difference Calibrator
Daily Difference Calibrator
SF2004 daily difference calibrator mainly calibrates electric stopwatch, electric energy meter, crystal, quartz clock, etc. with 32.768kHz or 1Hz. With high precision ≤1×10-7 OCXO built-in, it can support instantaneous measurement of daily difference, monthly difference and yearly difference.
Applications
Time Synchronization & Precision Timing Systems
Corrects clock drift in distributed systems (e.g., GPS, NTP servers, financial trading timestamps).
Ensures coherence in high-frequency trading (HFT) where microseconds matter.
Astronomy & Satellite Systems
Compensates for orbital timing discrepancies in satellite telemetry.
Aligns telescope observations with atomic clock references.
Support instantaneous measurement of daily difference, monthly difference and yearly difference
Non-contact or contact measurement way could be selected.
Frequency measuring function is also supported.
Time interval measurement is also supported.
7" touch screen display, voice broadcast PPM measurement result.
| Instantaneous Daily Difference Measurement | |
| Frequency | 32.768KHz, 1Hz |
| Object | Electric Stopwatch, Electric Energy Meter, Crystal, Quartz Clock, etc. |
| Method | Non-contact or contact |
| Items | PPM, s/d, s/m, s/y |
| Range | Daily difference: -10.000 ~ +10.000 (s) |
| Monthly difference: -300.000 ~ +300.000 (s) | |
| Resolution | 0.0001s |
| Allowed Error Range | Internal frequency standard-Daily difference: ±0.01s, Monthly difference: ±0.3s |
| External frequency standard-Daily difference: ±0.001s, Monthly difference: ±0.03s | |
| Time/Frequency Measurement | |
| Resolution | Frequency: 8 digits/sTime Interval: 5ns |
| Signal Level | Pulse, TTL Level |
| Time Base Input | |
| Frequency | 5MHz or 10MHz |
| Wave | Sine |
| Amplitude | ≥1.5VP-P |
| Built-in OCXO | |
| Frequency | 10MHz |
| Daily Aging | ≤1×10-9/day |
| Power on | ≤1×10-8 |
| Frequency Accuracy | ≤1×10-7 |
| Second Stability | ≤3×10-11/s |
| General Characteristic | |
| Power | AC220(1±10%)V, 50(1±5%)Hz, <50VA |
| Work Environment | Temperature: 0~+40℃, RH:20~80% |
| Dimension &Weight | 364×155×328 mm, approx. 2KGs |
