配置型号包含以下特性:
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This portable variable attenuator performs just as well in a laboratory environment as it does in the field. Superior specifications make it the variable attenuator of choice for several applications. For lab or fieldwork flexibility, choose the FVA-60B.
| Key Features |
| Up to 65 dB attenuation |
| Typical 2.5 dB insertion loss |
| Automatic attenuation sequence with Program mode |
| Standard Universal Interface |
| Benefits | |
| Program Mode: | Cycles through a repeatable sequence of up to 60 attenuation steps, pausing for one second or up to 60 hours at a time. The Program mode is particularly suited to accelerated bit-error-rate (BER) testing. |
| Fourteen Available Wavelengths | Matches your source wavelength to the nearest 10 nm for unbeatable accuracy. |
| Variable Scanning Speed: | Scans the complete attenuation range at four different speeds according to the selected step size (0.05, 0.20 or 1.00 dB/step and variable step size). |
| Remote Control Capability: | Operate the FVA-60B remotely from your PC using the standard RS-232 interface and control codes. Program software solutions are adapted to your testing needs. |
| Three-Way Powering: | The FVA-60B features three complementary power sources for extended operation: a rechargeable NiCad battery, a 9 V alkaline backup battery and an AC adapter/charger for continuous operation. |
| Exceptional Specifications: | High-quality optical components make the FVA-60B Variable Attenuator the standard for performance and flexibility. EXFO’s computer-assisted calibration techniques deliver remarkable specifications: ± 0.15 dB linearity 0.05 dB resolution ± 0.10 dB repeatability |
| Applications | |
| The FVA-60B enables consistent operation in various manual or automated testing situations. | BER testing System testing and acceptance Power meter calibration and verification Optical margin analysis System loss simulation Field, manufacturing and R&D applications |
| Specifications a | ||
| FVA-60B Variable Attenuator | ||
| Model Overview | ||
| Model | FVA-60B-C-XX | FVA-60B-D-XX |
| Fiber Type (µm) | 50/125 | 62.5/125 |
| Calibration Wavelengths (nm) | 850/1300 | 850/1300 |
| Attenuation Maximum (dB) | 65 | 65 |
Insertion Loss b, c (dB) Typical Maximum | 2.5 4.0 | 2.5 4.0 |
| Resolution (dB) | 0.05 | 0.05 |
| Linearity d (dB) | ± 0.15 | ± 0.15 |
Repeatability (dB) Typical Maximum | ± 0.03 ± 0.10 | ± 0.03 ± 0.10 |
Return Loss b (dB) Typical Maximum | 27 20 | 27 20 |
| Max. Input Power (dBm) e | 15 | 15 |
Notes:
a. At 23 °C ± 2 °C unless otherwise specified.
b. At calibrated wavelengths
c. With FC/PC connector.
d. At a calibrated wavelengths, using a non-polarized light source with 0.002 dB stability (source accuracy of ± 0.5 nm) and up to 50 dB of attenuation.
e. Typical value. Prolonged exposure may damage the unit.
| Specifications | ||
| FVA-60B Variable Attenuator | ||
| Model Overview | ||
| Model | FVA-60B-C-XX | FVA-60B-D-XX |
| Size | 220mm x 110mm x 50mm (8.75 in x 4.5 in x 2 in) | 220mm x 110mm x 50mm (8.75 in x 4.5 in x 2 in) |
Weight Unit Shipping | 0.75 kg (1½ lb) 2.5 kg (5.½ lb) | 0.75 kg (1½ lb) 2.5 kg (5.½ lb) |
Temperature Operating Storage | -10 °C to 50 °C (14 °F to 122 °F) -30 °C to 70 °C (-22 °F to 158 °F) | -10 °C to 50 °C (14 °F to 122 °F) -30 °C to 70 °C (-22 °F to 158 °F) |
| Relative Humidity | 0 % to 95 % non-condensing | 0 % to 95 % non-condensing |
| Power | AC charger (continuous operation), NiMH (5 to 25 hours depending on usage). 9V alkaline batteries (3 to 10 extra hours depending on usage) | AC charger (continuous operation), NiMH (5 to 25 hours depending on usage). 9V alkaline batteries (3 to 10 extra hours depending on usage) |
| Speed | 0 to 70 dB in 10 seconds at maximum scan rate | 0 to 70 dB in 10 seconds at maximum scan rate |
Note:
14 wavelengths available, of which two can be picked for quick toggling.
Multimode (nm) 820, 830, 840, 850, 860, 870, 880, 1270, 1280, 1290, 1300, 1310, 1320, 1330
| Specifications | |
| FVA-60B Variable Attenuator | |
| Model Overview | |
| Model / Part Number | Description |
| FVA-60B-X (Fiber Code) | |
| C | 50/125 µm multimode |
| D | 62.5/125 µm multimode |
| FVA-60B-X-XX (Connector Code ) | |
| EI-EUI-28 | UPC/DIN 47256 |
| EI-EUI-76 | UPC/HMS-10/AG |
| EI-EUI-89 | UPC/FC narrow key |
| EI-EUI-90 | UPC/ST |
| EI-EUI-91 | UPC/SC |
| EI-EUI-95 | UPC/E-2000 |
| Example | FVA-60B-D-EI-EUI-89 |



