Crown FM-1 Manuel d'utilisateur télécharger pdf (Page 9)

Front Panel Controls

There are six front panel controls on the FM RTC. These controls are:

• Tx1 RF Power Threshold

• Tx2 RF Power Threshold

• VOX Attack Timeout

• VOX Decay Timeout

• System Reset

• Operator Restart

The following sections detail the operation and use of each of these controls.

System Reset

The System Reset is the only unlabeled control on the FM RTC front panel.

Fault conditions, such as antenna relay switching problems or transmitter lock-outs

require user intervention by resetting the RTC using this control.

Operator Restart

Operator Restart button has the following function on the FM RTC.

• Pushing and releasing Operator Restart switches the system between the

primary and secondary transmitters. Switch between transmitters to

exercise the RF antenna relay or verify the operation of the secondary

transmitter.

VOX Timeout Settings

There are two VOX adjustments on the FM RTC which control switching after loss

or return of audio.

• VOX Attack Timeout sets the length of time a loss of audio will trigger

switching from the primary to secondary transmitter. The timeout is

adjustable from 3 to 120 seconds.

• VOX Decay Timeout sets the time the audio signal must be present before the

FM RTC switches from the secondary to the primary Transmitters. The

timeout is adjustable from 3 seconds to 120 seconds.

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Crown FM-1 Manuel d'utilisateur Page 9