Fluke 908/909 Frequency References
- Designed for calibration laboratories, ideal for calibrating a wide range of instruments, offering excellent short-term stability for faster frequency calibration.
- Serve as an accurate “”Atomic clock”” reference in automated test systems.
- Fast warm-up time, increasing productivity and efficiency in calibration tasks.
- Cost-effective solution for frequency standards located in multiple departments or buildings, eliminating the need for a costly central reference distribution system.
- Description
- Additional information
- Specifications
Description
The Fluke 908 and 909 are portable frequency references designed to be the cornerstone of accurate frequency measurements in diverse settings, from calibration laboratories to field applications.
Key Features:
- Designed for calibration laboratories, ideal for calibrating a wide range of instruments, offering excellent short-term stability for faster frequency calibration.
- Serve as an accurate “”Atomic clock”” reference in automated test systems.
- Fast warm-up time, increasing productivity and efficiency in calibration tasks.
- Cost-effective solution for frequency standards located in multiple departments or buildings, eliminating the need for a costly central reference distribution system.
Applications:
- Calibrating Frequency Counters:
- Serves as the primary reference for calibrating frequency counters, ensuring their accuracy and reliability.
- Verifying Frequency Synthesizers:
- Used to verify the accuracy and stability of frequency synthesizers, ensuring their precise output frequencies.
- Maintaining Time and Frequency Standards:
- Plays a crucial role in maintaining time and frequency standards within laboratories and other critical applications.
- Supporting Research and Development:
- Contributes significantly to research and development in fields requiring precise frequency measurements, such as telecommunications, aerospace, and scientific research.
Key Differences:
- 908 (Crystal Oven):
- Employs a high-stability oven-controlled crystal oscillator.
- Offers a cost-effective solution for many calibration needs.
- 909 (Rubidium):
- Incorporates an ultra-stable Rubidium timebase (atomic clock), providing significantly higher stability and lower aging rates.
- Ideal for applications requiring the highest level of frequency accuracy and stability.
The Fluke 908 and 909 are not merely frequency sources; they are the foundation upon which accurate frequency measurements are built. By providing stable and reliable frequency references, they empower calibration laboratories and researchers to achieve the highest levels of precision in their frequency measurements, driving advancements in various fields of science and technology.
Additional information
| Brand | Fluke Calibration |
|---|
Specifications: 908/909 Frequency References
| Reference outputs | ||
| Base model | 5×10 MHz, 1×5 MHz: sine >0.6V rms in 50Ω | |
| With Option 70 | 10 x 10 MHz, 1 x 5 MHz: sine >0.6V rms in 50Ω | |
| Frequency Stability | ||
| Aging per month | 908 (Oven) | 3×10-9 |
| 909 (Rubidium) | 5×10-11 | |
| Aging per year (per 10 years) | 908 (Oven): | 2×10-8 (1 year) |
| 909 (Rubidium) | 1×10-9 (10 years) | |
| Temperature | (20°C to 26°C) | |
| 908 (Oven): | 4×10-10 typ | |
| 909 (Rubidium): | 2×10-11 typ. | |
| ——– | ||
| 0°C to +50°C) | ||
| 908 (Oven): | 2.5×10-9 | |
| 909 (Rubidium): | 3×10-10 | |
| Short term (root Allan variance) | 908 (Oven): | 5×10-12, t= 10s |
| 909 (Rubidium) | 1×10-11, t=10s | |
| ——– | ||
| 908 (Oven): | 5×10-12, t=1s | |
| 909 (Rubidium) | 3×10-11, t=1s | |
| Warm up (at +25oC) | 908 (Oven): | 10 mins. to 5×10-9 |
| 909 (Rubidium) | 5.4 mins. to lock | |
| 11 mins. to 4×10-10 | ||
| Environment | ||
| Temperature | 0°C to +50°C (operating) | |
| -40°C to +70°C (storage) | ||
| Safety | Compliant to EN 61010-1 and CE | |
| EMI | Compliant to EN 55011 ISM group, class B, EN 50082-2 and CE | |
| Power Consumption (90-264V, 47-63 Hz) | ||
| 908: | <20W at warm up, < 7W continuous operation | |
| 909: | <70W at warm up, <30W continuous operation | |
| Dimensions and Weight | ||
| Size | 315 x 86 x 395 mm | |
| (12.4 x 3.4 x 15.5 ins) | ||
| Weight | 4.8 kg (net), 7.8 kg (shipping) | |
| (10.6 lb (net), 18.2 lb (shipping) | ||
| Calibration | ||
| Calibration Documentation | 17025 accredited report of calibration included | |
