EFX-TEK AP-16+ Manual - Halaman 5

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manually-started SFXnn.WAV files (AUXnn.WAV files are not affected). The pre-play delay, 0 to 30 seconds,

is set by the PRE potentiometer (P). During this delay the STATUS LED will flash between yellow and green,

and the AP-16+ will remain silent (AMBIENT.WAV will be stopped if it was playing).

The post-delay potentiometer (Q) can be used to prevent immediate re-triggering of audio; this is especially

useful when using the AP-16+ for stand-alone audio and prop control. The post-play delay, 0s to 3 minutes, is

set by the POST potentiometer (Q). During this delay the STATUS LED (S) will flash between red and green,

and if the ambient Loop switch ( ) is set to ON, AMBIENT.WAV will be re-started during the post-play delay.

Relay Control Output

The AP-16+ has an on-board relay with normally-open and normally-closed contacts (R). The relay is

automatically activated when an audio is played. The relay is not activated for AMBIENT.WAV, or during the

pre- and post-play delay periods.

Configuration Switches

The 6-position configuration switch controls many aspects of the AP-16+ behavior; the table below describes

the function of each switch.

BR Sets the baud rate for serial control (see below). When OFF, the baud rate is 2400 (Prop-1); when ON

the baud rate is 38400 (Prop-2, Prop-SX).

A1 Controls the upper bit of the AP-16+ address for serial commands (see below).

A0 Controls the lower bit of the AP-16+ address for serial commands (see below).

EN When ON, the EN option switch converts IN8 from a manual control input (for AUX08.WAV) to a "audio

stop" input for any file (except AMBIENT.WAV when playing). When enabled the Audio Stop function

will stop the file regardless of state: pre-play delay, playing, or post-play delay.

When ON, the ? switch activates random mode for SFX files. The file played will be from SFX00.WAV

through the file indicated by the AUDIO SELECT switch.

When ON, the ambient Loop switch causes AMBIENT.WAV (if on the SD card) to be played while the

AP-16+ is idle.

The AP-16+ serial connection conforms to the Parallax AppMod bi-directional communications protocol, which

operates at TTL (0 to 5 VDC) using "open-true" baud mode to enable daisy-chaining devices. All exchanges

are initiated by the host controller. The format of host communications to the AP-16+ is as follows:

"!AP16", address, command { , data }

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