Crestron electronic C2N-TFM

FM Radio Tuner Crestron C2N-TFM

20 • FM Radio Tuner: C2N-TFM Operations Guide - DOC. 6233A

C2N-TFM Digital Input and Output Signal Descriptions (continued)

SIGNAL TYPE AND

NAME DESCRIPTION

Inputs: <FM_Scan+>,

<FM_Scan->

Scans through FM stations on the rising edge of

the input.

Users can scan for stations by pressing the local

up (k) and down (j) buttons on the C2N-TFM

when the unit is in SCAN mode; or from remote

buttons defined on a touchpanel or other interface.

The tuner will scan up (+) or down (-) to a station,

pause for five seconds, and then continue

scanning to the next station. Pressing the local or

remote scan button again will stop the scan

operation.

The scan operation also stops when:

1) the local BAND or MODE buttons are pressed;

2) a remote band or search button is pressed; or

3) when it wraps around to the original station, if

that station is scannable; or

4) if the original station is not scannable, after a

maximum of repeat counts.

High/1 (rising edge) = Scan up or down;

Low/0 = No effect

Output: <FM_Scanning> Indicates that the tuner is busy scanning. The

output will be high for as long as the tuner remains

scanning.

High/1 = Scanning; Low/0 = Not scanning

Input:

Disables the auto-mute and auto-mono features in

the FM tuner when the input is high. When low,

the auto features are enabled.

Auto mode automatically sets the tuner to mono

as the signal strength weakens, and mutes the

audio when the signal strength is weak.

High/1 = Disable auto-mute and auto-mono mode;

Low/0 = Enable auto-mute and auto-mono mode

Inputs:

<FM_Hphone_Vol+>,

<FM_Hphone_Vol->

Increases (+) and decreases (-) the headphone

volume on the rising edge of the signal.

Users can control the headphone volume by

pressing the local up (k) and down (j) buttons

on the C2N-TFM when the unit is in VOL mode, or

from remote buttons defined on a touchpanel or

other interface.

If the input is high for longer than 300

milliseconds, the volume will continue to increase

or decrease until:

1) the input goes low (the local or remote volume

button is released); or

2) after maximum "repeats".

High/1 = Raise/lower volume (volume button

pressed); Low/0 = volume button released

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