Manual

M4.2Si TimeLock User Manual

Navigation

The M4.2 TimeLock™ employs a simple 3-button user interface. From the start ‘HomeScreen’ press

the center button once. An arrow will appear next to the frequency. Use the UP/DN arrow button to

toggle the Arrow on the LCD around the different fields on the HomeScreen. Press the Center button

to select a field to change. The arrow will start to flash indicating that the UP/DN arrows are available

to change the value of the field. Press the Center button to save and exit.

M4.2 TimeLock™ Operating Description - Controls and Indicators

Front Panel

Figure 1.

Status

• Alarms – illuminated red when an alarm is enabled and flashes red every second when an

alarm condition is active.

• HD Locked – Blue LED illuminates when tuner has acquired OFDM (orthogonal frequency

division multiplexing) portion of an HD RadioTM signal and digital carrier S/N > 58dB/Hz,

thereby permitting HD RadioTM digital audio to be valid. HD is displayed in upper right hand

corner of VFD when tuner has acquired OFDM portion of an HD RadioTM signal.

• Multicast – Blue LED illuminates when tuner has acquired OFDM of an HD RadioTM signal and

there is at least one multicast signal present.

• RF Level - Bi-colored LED: Green indicates strong RF > 40 dB. Red indicates weak RF < 40

dB.

• Up Arrow – Momentary push UP from the Homescreen will enter the Headphone volume menu.

Both arrows are used to increase and decrease the volume. From selection mode Press

ENTER again to change a value in any a field indicating a blinking arrow ready. Use the UP

and DOWN arrows to navigate/toggle through the available choices or range. UP Arrow button

tunes the frequency up one increment while tuning to a new station, when held for three

seconds it tunes faster at 1.5x speed. UP selects next stored preset station in PRESETS mode

(no faster mode, one push per preset). Selects next item in other menus and is used for other

functions as described herein. Holding the UP arrow while powering the unit on will restore

factory settings.

• Down Arrow – Momentary push DOWN from the Homescreen will enter the Headphone

volume menu. Both arrows are used to increase and decrease the volume. From selection

mode Press ENTER again to change a value in any a field indicating a blinking arrow ready.