AMS TMD2620 Panduan Pengguna - Halaman 10

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AMS TMD2620 Panduan Pengguna

2.1.5 "Prox" Tab

The main portion of the screen contains a tab labeled Prox. The controls in this tab are divided into
3 sections, each performing a separate function.
2.1.5.1
Prox Controls
The left side of the Prox tab contains controls to set various Prox settings.
The PPULSE controls the maximum number of pulses used for each prox cycle. To avoid saturating
the prox sensor, the Automatic Pulse Control (APC) feature of the device may reduce the number of
pulses in real-time. The maximum number of pulses selected, which is one more than the value in
the register (PPULSE = 0 → 1 pulse), is displayed immediately to the right of the box.
The PPULSE_LEN control sets the width of all IR LED pulses within the proximity cycle. Longer
pulses result in increased proximity range and typically result in less electrical noise generated in
the analog front end.
The PGAIN control is a pulldown menu that lets you select the analog gain of the proximity IR
sensor. The values that can be chosen are 1x, 2x, 4x and 8x.
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