1.4
Caps can be configured with one of two types of dimming control based on the cap size per the chart below. Variable Voltage Dimming varies cap luminance directly with changes in the applied control voltage. Discrete Dimming caps operate at a constant control voltage, but vary luminance to predefined levels based on the state of dimming control pins. Certain dimming controls can be combined with Press-to-Test (PTT) circuitry (see Section 1.5) internal to the caps, allowing for a single test signal to illuminate the entire cap.
|
Figure 1.4.0-A Dimming Controls for Standard Voltage |
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|---|---|---|
| Dimming Control | Standard Square* | Large Rectangular |
| Variable Voltage Dimming | 28 VDC (w/ and w/o PTT) 5 VDC (w/o PTT) |
28 VDC (w/ and w/o PTT) |
| Discrete Dimming – Power/Ground (P/G) Control |
28 VDC (w/ and w/o PTT) | N/A |
| *Other voltages available for Variable Voltage Dimming Standard Square caps. See Section 1.5 and Appendix D. | ||