The Solar 8282-1 Transient Pulse Generator was designed for screen room use in making conducted spike susceptibility tests. It provides all the waveshapes required by MIL-STD-461B, MIL-STD-461C and many other military EMI specifications.
Three different spike durations are provided by the Solar 8282-1: 0.15 µS, 5.0 µS, and 10.0 µS. The pulse shape approximates the curve of Figure 19 in MIL-STD- 462. The amplitude of the spike voltage is fully adjustable and is displayed on an LED meter. In the series injection mode on 50, 60 or 400 Hz lines, a phase adjustment allows the spike to be positioned anywhere on the sine wave of the power line. This feature makes possible the injection of interfering transients at selected points in time to determine the susceptibility of systems which depend upon frequency or time.
The repetition rate of the spike can be adjusted with a panel control to any rate from 0.5 to 50 p.p.s. A single pulse can be injected with the aid of a panel-mounted pushbutton.
The Solar 8282-1 Transient Pulse Generator provides up to 600 volts peak amplitude for each of the 0.15, 5.0 and 10.0 µS spikes. The output voltage rises steeply to peak amplitude as adjusted by the panel control, then falls exponentially to cross through zero at the duration of 0.15, 5.0, or 10.0 µS as selected by pushbuttons. The voltage falls below zero and “rings” for a period determined by the inductance in the output circuit or the load. The peak amplitude displayed on the LED meter is the value that would appear across a 5.0 ohm noninductive load.
With series injection on 50, 60 or 400 Hz power lines, the spike can be applied to either the positive or negative half cycle of the power frequency sine wave. The spike can be adjusted to fall on the power sine wave from 0° to 360°.
For non-synchronous injection, the repetition rate can be adjusted from 0.5 to 50 p.p.s.
A pushbutton enables the “single spike” feature and the spike can be manually triggered by pushing another button. A connector on the rear panel makes provision for remote triggering of the single spike feature.
One method requires the application of 24 volts d.c. to trigger the pulse at rates determined by an external switch up to 550 p.p.s. The second method requires the application of a square wave which can be used to trigger the spike up to 50 p.p.s. for the 0.15 µS spike and up to 1000 p.p.s. for the 5.0 and 10.0 µS spikes. This latter feature can be used to trigger the spike in sync with some function within the equipment under test.
Features of the Solar 8282-1 Transient Pulse Generator include:
Specifications of the Solar 8282-1 Transient Pulse Generator include:
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