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產(chǎn)品中心鳥(niǎo)牌BIRD│半導(dǎo)體解決方案鳥(niǎo)牌│Bird假負(fù)載100W大功率負(fù)載8251Bird|1000W大功率假負(fù)載8251
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Bird|1000W大功率假負(fù)載8251功率為1000W，接口為See Chart，油浸式散熱，可在鳥(niǎo)牌系列功率計(jì)上通用。
| 品牌 | BIRD/美國(guó)鳥(niǎo)牌 |
|---|
1 kW, Oil-Cooled Terminations
The 8251 Series are portable, self-contained general purpose 50 ohm coaxial transmission line terminations requiring no
outside power source or additional equipment. The loads are Oil-assisted convection cooling for safe, continuous operation up to 1000W full rated power.
They provide accurate, dependable, and practically nonreflective termination for testing
and adjusting transmitters under nonradiating conditions. The load consists essentially
of a cylindrical film type resistor immersed in a dielectric coolant. The resistor,
individually selected for its accuracy, is enclosed in a special tapered housing which
provides a linear reduction in surge impedance directly proportional to the distance
along the resistor.
· This series has includes 8251D and 8251D7-16 models for
Digital BroadcastVSWR = 1.065 max., 470-860 MHz
| 8251 Series, Terminations | |
| Model | Connector |
| 8251 | LC connector installed and an additional QC-N connector for lower-power testing |
| 8251N | QC-N connector for lower-power testing. |
| 8251D | 1-5/8" EIA, Flanged |
| 8251D7-16 | 7/16-DIN （F） |
| Power Rating （Watts） | 1000 continuous |
| Frequency Range and VSWR | DC - 1 GHz @ 1.1 max. |
| Coolant | 1.1 gal. （4.1 liters） Silicon Oil |
| Product Type | Oil-Cooled |
| Ambient Temp Range [°C （°F）] | -40°C to +45°C |
| Operating Position | Horizontal only |
| Connector（s） | See Chart |
| Finish | Gray Powder Coat |
| Nominal Size [inches （mm）] | 17-29/32" x 5-15/16" x 8-1/2" （L x W x H） |
| Weight [lbs （kg）] | 25 lbs., 8 oz. （11.5 kg） |
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