Model 1900
Impedance Matching Transformer
General
The model 1900 low-noise impedance matching transformer is a versatile device for matching sources with impedances in the range from less than 50 mW to greater than 500 W to measuring instruments with high input impedance and offers two turns ratios of 1:100 or 1:1000. The frequency response depends on both the turns ratio and the source impedance but under optimum conditions will be essentially flat from below 0.1 Hz to above 2 kHz.
The unit is supplied with a special low-noise coaxial cable fitted with two BNC plugs to connect its output to the following instrument.
Noise Figure Contours (typical)
| Voltage Gain | 1:100 or 1:1000 selected by front-panel BNC connector |
| Frequency Response | Depends on turns ratio and source resistance - see plots above |
| Mounting | Free-standing fully shielded |
| Dimensions (excluding connectors) | 3" wide x 5.8" long x 3" high (76 mm wide x 147 mm long x 76 mm high) |
| Shipping Weight | 5lbs (2.3 kg) |
 | 资料下载(10.5M)： |
| 美国SignalRecovery(原名EG&G)公司微弱信号检测系列产品 |
