Multi-Channel Filter/Amplifier System
- Frequency 0.1 Hz to 51 kHz
- 2550:1 cutoff span
- -18 dB to +66 dB Gain (x0.125 to x2048)
- Differential input
- Switched 4mA IEPE source
- Range of factory set filter responses
- 16 channel 19" rack frame
- Up to 8 frames per interface
- Computer Controlled
|Channels||1-16 per rack ( up to 4 racks per system)|
|Control||RS 232 or GPIB|
|Frequency||0.1 Hz - 51 kHz|
|Gain||-18dB to +66 dB|
|Filters||Low pass or High pass.|
|Filter Responses||01 03 05 07 09 41|
|Input Coupling||AC / DC|
|IEPE||Yes 4mA 20V|
|Power|| 90 -120 / 180-240 Vac 50/60Hz
Optional 9 - 30 V DC, with AC 'power brick'
Four frequencies are available as standard: 0.1Hz, 1Hz, 10Hz and 20Hz. These give maximum frequencies of 255Hz, 2.55kHz, 25.5kHz and 51kHz respectively..
|1 Hz Model||1 - 255 Hz in steps of 1 Hz||10 - 2 550 Hz in steps of 10 Hz|
|0.1 Hz Model||0.1 - 25.5 Hz in steps of 0.1Hz||1 - 255 Hz in steps of 1 Hz|
|20 Hz Model||20 - 5 100 Hz in steps of 20 Hz||200 - 51 000 Hz in steps of 200 Hz|
A unity gain pre-trimmed differential stage feeds an amplifier with gain programmable from 0dB to 42dB in 6dB steps. After passing through the filter the signal is applied to an amplifier with gain from -18dB to 18dB in 6dB steps. In this way the output signal level can be adjusted to suit most conversion and recording systems.
Filter Response Types
Each 21CF30 card has a fixed response characteristic set at the factory. The card is available in several standard filter responses, lowpass or highpass. The most usual is filter response 01lowpass, for alias prevention.
Optional DC power is available.