250 Series High Voltage Video Amplifier
This is a linear Class A output video amplifier with a maximum differential output of 275V over the range d.c. to 7MHz. The two outputs can also be set to ±250V dc relative to each other using a bias control. This facility allows an electro-optic amplitude modulator to be set to any desired light output intensity level for any input signal level. This output bias does not introduce any limit to the signal output range.
The amplifier has been designed to drive electro-optic modulators from the EM200 range where the load is purely capacitive and does not exceed 100pf. The output is short circuit proof.
Specifications
| Signal output voltage range | 275Vdc - 6MHz bandwidth |
| Amplifier Square Wave Rise & Fall Time using 100pf load |
< 65 ns (10% - 90%) |
| Bias Voltage Range | +250V to -250V |
| Input Voltage for Full Output | ±1Vdc or 2Vpp., ac |
| Input Impedance | 50 W nominal |
| Cabinet Size (mm) | Height 220, Width 530, Length 340 |
| Mains Voltage | 110/200/240ac 50-60Hz |
| Temperature Range | 0° - 40°C ambient |
