— 17 —
FRONT PANEL APPOINTMENTS
All setup and operating adjustments of the JUSTIN 808 are un-
der firmware control. There are no jumpers, switches or me-
chanical potentiometers, only the front-panel ‘jog’ knob,
A
;
the
Back
button,
B
; and the OLED display,
C
identified in the illus-
tration below.
C B A
Again, you
turn
the knob to cycle among highlighted menu
items, and then
push
the knob to enter, select or adjust the
highlighted item. The
Back
button returns you to the previous
menu; push the
Back
button repeatedly to return to the Main
menu.
Graphic
Display
The OLED graphic display screen,
C
, presents the setup menu
tree in an easy-to-read format. The display does have a screen
saver mode, which either dims the display or turns it off after a
specified period. If the screen goes dark, simply push the knob
or
Back
button once to bring the screen to life. No selection or
change is made with this ‘wake-up call.’
Only the front-panel knob gives access to the display settings
Navigate to
Admin
/
Display
to set screen
Brightness
, and to set
the timeout mode. Check the box to
Dim
the display after the
timeout interval or uncheck it (
Dim
) so that the display turns
completely off. The
Timeout
period maybe set in 5-minute in-
crements between five and sixty minutes.
Headphone
Jack
The front-panel headphone jack accepts any quarter-inch TRS
(stereo) plug, and can drive headphones of any impedance.
When a plug is inserted into this jack, the front-panel OLED
display will go immediately to the Headphone Volume screen.
Push the knob and adjust the level for comfortable listening.
The
MONITOR SELECT
switch to the right of the jack cycles the
headphones between
L-FM
/
R-HD1
and
AES
. The first option
routes monaural analog FM audio to your left ear, and monau-
ral HD1 audio to your right. This is the “split mode” of HD Ra-
dio reception, and enables an audible confirmation of time
alignment.
The
AES
monitor option routes the delayed (processed) stereo
AES digital audio signal to the headphones. This can, of course,
be as much as 8+ seconds ahead of the off-air broadcast.
“Split Mode”
Audio Monitor
When the analog FM and digital HD1 programs are in sync; that
is, when they are perfectly time-aligned, you will hear monaural
program audio ‘in the center of your head.’ This is to say that
