439
Digital Current Integrator
- Measures dc or average value of pulse currents
- Usable as digital current integrator, digital charge integrator, or
digital electrometer
- Wide dynamic range
- Input protected to ±1000 V (0.01 µF) or ±2000 V (0.001 µF)
The ORTEC Model 439 Digital Current Integrator
was designed to accurately measure dc currents or the average value of pulse currents such
as produced by accelerator beams. It digitizes the input current by producing an output
pulse for specific values of input charge. A front-panel switch permit the selection of
three different amounts of charge (10–10, 10– 8 or 10–
6 coulomb) required to produce an output pulse. The instrument has a digitizing rate
from 0 to 10 kHz to provide wide dynamic range on each setting and high-resolution readout
without meter interpolation.
The Model 439, when combined with a preset
counter, forms a digital charge integrator. When it is combined with a counter and timer,
a digital electrometer is obtained.
A front-panel meter is provided to read the
input current. Full-scale analog outputs of 1 mA, 100 mV, and 10 mV are provided on
rear-panel binding posts. Full-scale readings for the front-panel meter and the analog
outputs can be selected in 15 steps from 1 X 10–9 to 1 X 10–2
A. The input is protected from damage by application of a large input charge.Front- and rear-panel BNC connectors are
provided for the application of a Gate signal to inhibit the digitized output. This Gate
may be used to remotely control the Model 439 or it may be used to inhibit the digitized
output with a multichannel analyzer dead time output signal.
ORDERING INFORMATION
| Model |
|
Description |
| 439 |
|
Digital Current
Integrator |
|
